Fence post

Abstract

A post for tensioned steel wire fencing is described. The post comprises a base part for ground insertion and a top part partially insertable into the base part, the top part comprising a non-insertable region for engaging with fence wiring. Once inserted into the base part, the top part and the base part are interlocked via an interlocking mechanism. The base part is configured to be inserted into the ground via a driving force applied to the base part at intervals.

Description

[0001] Fence Post

[0002] Technical Field

[0003] The present invention relates to a post for tensioned steel wire fencing, and a method of installing the post into the ground.

[0004] Background

[0005] Tensioned fencing is commonly used in rural settings to restrain livestock / wild animals and / or to partition pieces of land.

[0006] Tensioned fencing is provided by wires, typically steel wires, which are strained and attached to strainer posts and intermediate posts. After installation, intermediate posts are typically positioned every 3 m or 4 m and are arranged to guide the fence line. Strainer posts are configured to withstand more tension than the intermediate posts; these are installed at the end of fences, at points of changing fence direction and, on a long fence line, are typically positioned at every 50 m. Traditionally dug in by hand, most posts are now knocked in using a driving tool. In hard ground, metal tools or rock spikes can be used to make a hole for the posts.

[0007] Many different types of tensioned fencing posts are known in the art. However, each type has certain drawbacks.

[0008] Wooden posts are cheap and versatile and are therefore the most common type of post. For example, most posts for tensioned galvanized steel agricultural fencing are made of treated timber. However, the product life of wooden posts has been greatly reduced since the banning of toxic preservatives in the UK and elsewhere.

[0009] Metal posts are becoming increasingly common, but tend to be expensive and inflexible. An example of a fencing system which includes metal fence posts and retaining clips is described in GB2541960.

[0010] Plastic posts are also used in the art but are an inferior product to wooden and metal posts with very small-scale use.

[0011] Hybrid posts, comprising steel and plastic elements, also feature, though current designs are also relatively expensiveThus, there is a need for posts for tensioned fencing which address the drawbacks of posts in the art and fulfil all requirements of tensioned fencing.

[0012] Preferably, posts for tensioned fencing should be cheap to manufacture and install, aesthetically pleasing (as they are typically a prominent structure in natural settings), and have a good product life.

[0013] The posts should also have sufficient integrity to withstand high-shock installation processes which use post drivers, be resistant to uprooting, ploughing, and spinning in a variety of ground conditions, and be strong and stiff above ground.

[0014] Suitable posts should also work flexibly with different wire spacings, whilst enabling the wires to be easily attached such that they are securely, but loosely, held by the posts.

[0015] Summary

[0016] According to a first aspect of the present invention, there is provided a post for tensioned steel wire fencing comprising a base part for ground insertion and a top part partially insertable into the base part, the top part comprising a non-insertable region for engaging with fence wiring. Once inserted into the base part, the top part and the base part are interlocked via an interlocking mechanism. The base part is configured to be inserted into the ground via a driving force applied to the base part at intervals.

[0017] Thus, an improved post for tensioned steel wire fencing is provided.

[0018] As used herein, the term "tensioned steel wire fencing" may refer to fencing in which steel wires are strained and attached / engaged to strainer posts and / or intermediate posts.

[0019] As used herein, the term "strainer post" may refer to a tensioned steel wire fencing post which is configured to take more tension than an intermediate post, and is typically positioned at an end of the fence.

[0020] As used herein, the term "intermediate post" may refer to a tensioned steel wire fencing post which is configured to take less tension than a strainer post and is arranged to guide the fence line.

[0021] The base part may be configured to receive a partially insertable driving tool.The partially insertable driving tool may be a bar.

[0022] The partially insertable driving tool may be configured to transmit the driving force to the base part at intervals.

[0023] The base part may be a tube open at each end and the driving tool may partially extend beyond the base part into the ground when transmitting the driving force.

[0024] The top part may be inserted into the base part after the base part is inserted into the ground.

[0025] The base part may be configured to move in a substantially non-rotational direction when being inserted into the ground via the driving force.

[0026] The interlocking mechanism may be activated by the relative movement of the top part with respect to the base part during insertion.

[0027] The interlocking mechanism may be irreversible once activated.

[0028] The interlocking mechanism may prevent relative movement of the top part with respect to the base part once activated.

[0029] The post may be a strainer post.

[0030] The base part may comprise a base part body and a sleeve part slotted into and fixed within the base part body, wherein once inserted, a section of the top part is positioned within the sleeve part.

[0031] The post may be an intermediate post.

[0032] The interlocking mechanism may be realised by a plurality of interlocking pieces comprised in the base part, and a plurality of holes or a trench comprised in the top part, wherein the interlocking mechanism is activated when each interlocking piece engages with the trench or a respective hole.

[0033] Each interlocking piece may be configured to i) move radially with respect to a central axis of the base part in response to a force, and ii) return to its original position oncethe force is removed. Each interlocking piece may engage with a respective hole or the trench via its radial movement.

[0034] The interlocking mechanism may be realised by a plurality of recesses comprised in the base part, and a plurality of protrusions comprised in the top part, wherein the interlocking mechanism is activated when each protrusion engages with a respective recess.

[0035] The top part and / or the base part may be a composite part comprising metal and plastic elements.

[0036] According to a second aspect of the present invention, there is provided a driving tool for insertion into the base part of the post according to the first aspect of the present invention. The driving tool is configured to transmit the driving force to the base part at intervals.

[0037] The driving tool may comprise a collar positioned such that, once the driving tool is inserted into the base part, the collar transmits a portion of the driving force to the top of the base part.

[0038] The driving tool may be dimensioned to apply a portion of the driving force to at least one discrete subsection of the base part.

[0039] According to a third aspect of the present invention, there is provided a post assembly system comprising the post according to the first aspect of the present invention and a driving tool according to the second aspect of the present invention. The base part is a tube open at each end and the driving tool partially extends beyond the base part into the ground when transmitting the driving force.

[0040] Brief Description of Drawings

[0041] Certain embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings in which:

[0042] Figure 1 shows a section of tensioned fencing;

[0043] Figure 2 shows a section of tensioned fencing with environment details;

[0044] Figure 3 shows a base part of a strainer post;

[0045] Figure 4 shows a base part of a strainer post;

[0046] Figure 5 shows a section of a base part of a strainer post;

[0047] Figure 6 shows a section of a base part of a strainer post;Figure 7 shows an exploded view of a base part of a strainer post;

[0048] Figure 8 shows an inner tube of a strainer post;

[0049] Figure 9 shows an inner tube inserted into a base part of a strainer post;

[0050] Figure 10 shows a strainer post;

[0051] Figure 11 shows several pieces of a top part of a strainer post;

[0052] Figure 12 shows a top part of a strainer post;

[0053] Figure 13 shows parts of a strainer post relating to an interlocking mechanism; Figure 14 shows a base part of an intermediate post;

[0054] Figure 15 shows a base part of an intermediate post;

[0055] Figure 16 shows a top part of an intermediate post;

[0056] Figure 17 shows a section of a top part of an intermediate post;

[0057] Figure 18 shows a section of a top part of an intermediate post;

[0058] Figure 19 shows an intermediate post;

[0059] Figure 20 shows a section of a top part of an intermediate post;

[0060] Figure 21 shows a section of a base part of an intermediate post;

[0061] Figure 22 shows a cross-section of an intermediate post;

[0062] Figure 23 shows a cutaway view of an intermediate post;

[0063] Figure 24 shows a strainer post in tensioned fencing;

[0064] Figure 25 shows an intermediate post in tensioned fencing;

[0065] Figure 26 shows a staple piece for a wire attachment means;

[0066] Figure 27 shows a staple piece for a wire attachment means;

[0067] Figure 28 shows a hole in a post;

[0068] Figure 29 shows a staple piece inserted into a post;

[0069] Figure 30 shows a staple piece for a wire attachment means;

[0070] Figure 31 shows a locking piece for a wire attachment means;

[0071] Figure 32 shows a locking piece being inserted into a post;

[0072] Figure 33 shows a locking piece locked with a staple piece;

[0073] Figure 34 shows an intermediate post using a wire attachment means;

[0074] Figure 35 shows a strainer post using a wire attachment means;

[0075] Figure 36 shows a driving tool for a strainer post;

[0076] Figure 37 shows a driving tool inserted into a strainer post;

[0077] Figure 38 shows a driving tool for an intermediate post;

[0078] Figure 39 shows a driving tool inserted into an intermediate post;

[0079] Figure 40 shows a cross-sectional view of a driving tool inserted into an intermediate post;

[0080] Figure 41 shows a section of tensioned fencing;

[0081] Figure 42 shows a strut joining piece;

[0082] Figure 43 shows a strut joining piece engaged with a pair of post cuffs;Figure 44 shows a post cuff;

[0083] Figure 45 shows a strut;

[0084] Figure 46 shows a base piece;

[0085] Figure 47 shows a base piece coupled to an intermediate base part;

[0086] Figure 48 shows a horizontal joining piece;

[0087] Figure 49 shows a section of tensioned fencing;

[0088] Figure 50 shows a box joining piece;

[0089] Figure 51 shows a box joining piece;

[0090] Figure 52 shows a section of a strut;

[0091] Figure 53 shows a process flow diagram of a method of installing posts and tensioned fencing.

[0092] Figure 54 shows a section of tensioned fencing;

[0093] Figure 55 shows a section of tensioned fencing with environment details;

[0094] Figure 56 shows a strainer post;

[0095] Figure 55 shows a cross-sectional view of a strainer post;

[0096] Figure 58 shows a top part of a strainer post;

[0097] Figure 59 shows a base part of a strainer post;

[0098] Figure 60 shows a driving tool for a strainer post;

[0099] Figure 61 shows a driving tool inserted into a base part of a strainer post;

[0100] Figure 62 shows several pieces of a base part of a strainer post;

[0101] Figure 63 shows a section of a base part of a strainer post;

[0102] Figure 64 shows a section of a base part of a strainer post;

[0103] Figure 65 shows a section of a base part of a strainer post inserted with a top part of the strainer post;

[0104] Figure 66 shows an interlocking piece for an interlocking mechanism;

[0105] Figure 67 shows an intermediate post;

[0106] Figure 68 shows a section of an intermediate post;

[0107] Figure 69 shows a top part of an intermediate post;

[0108] Figure 70 shows sections of a top part of an intermediate post;

[0109] Figure 71 shows a top part of an intermediate post with wire netting attached thereto; Figure 72 shows a section of a top part of an intermediate post and another section with wire netting attached thereto;

[0110] Figure 73 shows a bespoke staple for wire attachment means;

[0111] Figure 74 shows a section of a top part of an intermediate post and a bespoke staple for wire attachment means;

[0112] Figure 75 shows a section of a top part of an intermediate post and a bespoke staple for wire attachment means;

[0113] Figure 76 shows sections of a top part of an intermediate post;Figure 77 shows sections of a top part of an intermediate post;

[0114] Figure 78 shows a base part of an intermediate post;

[0115] Figure 79 shows a driving tool inserted into a base part of an intermediate post;

[0116] Figure 80 shows sections of a base part of an intermediate post;

[0117] Figure 81 shows a section of a base part of an intermediate post inserted with a top part of the intermediate post;

[0118] Figure 82 shows a section of a base part of an intermediate post inserted with a top part of the intermediate post;

[0119] Figure 83 shows an intermediate post;

[0120] Figure 84 shows a driving tool inserted into a base part of an intermediate post;

[0121] Figure 85 shows a top part of an intermediate post;

[0122] Figure 86 shows a section of a top part of an intermediate post;

[0123] Figure 87 shows a section of a top part of an intermediate post;

[0124] Figure 88 shows pieces of a top part of an intermediate post;

[0125] Figure 89 shows a pair of wedges for the intermediate post;

[0126] Figure 90 shows pieces of a base part of an intermediate post;

[0127] Figure 91 shows a section of a base part of an intermediate post with and without a top part of the intermediate post inserted thereto;

[0128] Figure 92 shows an interlocking piece for an interlocking mechanism;

[0129] Figure 93 shows a strainer post and a strut connected thereto;

[0130] Figure 94 shows pieces of a strut and a wooden stake;

[0131] Figure 95 shows a top strut piece;

[0132] Figure 96 shows a top strut piece;

[0133] Figure 97 shows pieces of a strut and a section of a top part of a strainer post;

[0134] Figure 98 shows an intermediate and struts attached thereto;

[0135] Figure 99 shows a top collar piece of a strut;

[0136] Figure 100 shows a top strut piece;

[0137] Figure 101 shows a top collar piece engaging with a top part of the intermediate post; and

[0138] Figure 102 shows pieces of a strut and a section of a top part of an intermediate post.

[0139] Detailed Description of Certain Embodiments

[0140] In the following, like parts are denoted by like references.

[0141] The present application is concerned with posts (both strainer and intermediate) for tensioned fencing. Each post comprises separate, but removably interlocking parts, allowing for the posts to be assembled during fence installation and, if required later, disassembled. These separate parts may be formed of different materials.Each of the Stainer and intermediate posts according to the present application includes a base part configured for ground insertion and a top part partially insertable into the base part. As will be hereinafter explained, the provision of separate parts allows for the base part to be inserted into the ground first before partially inserting the top part. Once inserted, the top part and base part can be removably interlocked. After installation of the posts, wire can be attached to the exposed (i.e., non-inserted) region of each top part. Thus, an integrated suite of intermediate and straining posts according to the present application may be provided to form a tensioned fence.

[0142] As used herein, the terms "top" and "bottom" / " base" are defined relative to each other according to the direction of ground insertion / post installation. The term "bottom" / "base" is associated with regions or constituents of the post which are at a deeper extent within the ground or towards the ground's surface than their counterpart "top" regions or constituents. The term "top" refers to regions or constituents of the post which are at a greater extent away from the ground or nearest to the ground surface from below the surface than their counterpart "bottom" regions or constituents.

[0143] Referring now to Figure 1, an example section of tensioned fencing 1 which includes the posts according to the present application is shown in perspective view. The tensioned fencing 1 includes a plurality of strainer posts 2 and a plurality of intermediate posts 3. Merely for ease of illustration, Figure 1 shows a single strainer post 2 defining a corner of the tensioned fencing 1. The strainer post 2 is positioned along the fence line between two intermediate posts 3, with wire netting 4 stretched therebetween. As will be described in more detail hereinafter, the wire strands of the wire netting 4 is attached to the Stainer and intermediate posts 2, 3.

[0144] The strainer posts 2 are preferably supported by one or more struts 5, angled with respect to the direction of post installation. Examples of appropriate struts 5 and accompanying post joining pieces will be described hereinafter. Merely by way of example, Figure 1 shows two struts 5 supporting the single strainer post 2. Each strainer post 2 and each intermediate post 3 comprises a base part 6 configured for ground insertion. This means that, after installation of the posts 2, 3, each base part 6 is embedded within the ground such that only the top of the base part 6 is visible. For simplicity, the ground has been omitted from Figure 1. However, Figure 2 shows a perspective view of the example tensioned fencing 1 as it would be seen in theenvironment after installation. In Figure 2, all base parts 6 are obscured from view by the ground.

[0145] Each base part 6 is approximately columnar in shape. However, the base parts 6 used in the strainer posts 2 (herein referred to as "strainer base part" 61) differs in certain aspects from the base parts 6 used in the intermediate posts 3 (herein referred to as "intermediate base part" 62). In some examples, such as that shown in Figure 1, each strut 5 is supported by an intermediate base part 62. The base parts 6, 61, 62 will be described in more detail hereinafter.

[0146] Each strainer post 2 and each intermediate post 3 further comprises a top part 7 to which the wire netting 4 is attached or secured. During installation of a given post 2, 3, the top part 7 is inserted into the base part 6 (which has been embedded into the ground) such that a region (not shown) of the top part (herein referred to as "insertable region") is obscured by the base part 6. Each top part 7 is also approximately columnar in shape, although aspects of its shape and design differ substantially from the base part 6, as will be hereinafter described. As with the base parts 6, the top parts 7 used in the strainer posts 2 (herein referred to as "strainer top part" 71) differs in certain aspects from the top parts 7 used in the intermediate posts 3 (herein referred to as "intermediate top part" 72).

[0147] After installation of a given post 2, 3, the top part 7 and the base part 6 extend along a shared, vertical axis. Preferably, the vertical axis is the axis which is perpendicular to the plane across which the surface of the ground (at the point of installation) extends. The vertical axis is along the direction of post insertion / installation into the ground and, herein, may be referred to as "axis of installation". In the example in Figures 1 and 2, the vertical axis is along the x axis and the plane of the ground is define by the y and z axes.

[0148] The height of the posts 2, 3, measured from the ground up, may be set according to the purpose of the tensioned fencing 1 being installed. Each post 2, 3 may have a height, hi (see Figure 2), from 1,000 mm to 2,100 mm, for example 1,100 mm, 1,350 mm, or 2,100 mm. The required post height is dependent on the height of the wire netting 4 which needs to be supported and this varies by application. For example, the posts 2, 3 for a conventional stock fence may have a height of 1,100 mm, whereas a fence used to protect forestry saplings from feral deer will need to be much higher. For taller posts 2,3, other dimensions may also change - for example a 2,100 mm post 2, 3 may require a larger foundation.Strainer post 2

[0149] The strainer post 2 according to the present application will now be described in greater detail. Referring now to Figure 3, the strainer base part 61 is shown in perspective view.

[0150] As hereinbefore described, the strainer base part 61 is approximately columnar in shape; this columnar shape extends along the direction of ground insertion (in Figure 3, along the x axis) and has first and second opposite ends 8, 81, 82.

[0151] The first end 81 is at the top of the strainer base part 61. The first end 81 includes a first opening 9, 91 into which the strainer top part 71 is insertable. The first opening 91 exposes / opens into a cavity 10 of the strainer base part 61. The cavity 10 extends along some or all of the length of the strainer base part 61 along the direction of ground insertion.

[0152] The exterior shape of the strainer base part 61 may be designed according to the environmental conditions of the place of installation. Preferably, the exterior surface of the base part 61 is shaped to maximise ease of ground penetration and to resist uprooting. Figure 3 shows an example of the strainer base part 61 having a specific exterior shape. The exterior shape of the strainer base part 61 comprises a surface shape motif 11 which is repeated four times along the length of the strainer base part 61. In other examples, the motif 11 may be repeated a different number of times.

[0153] In the present example shown in Figure 3, a given motif 11 is rotationally offset (wherein rotation is along the axis of ground insertion, along the x axis in Figure 3) by 45° from its adjacent motif 11. Each motif 11 comprises a circular rim 12 and a conical frustum-shaped surface 13 extending downwards from the rim to meet a cylindrical surface 14. Each motif 11 further comprises four projections 15. Each projection 15 extends out from the conical frustum-shaped surface 13 and the cylindrical surface 14, whilst also extending from the circular rim 12 down the length of the motif 11. Thus, the four projections 15 divide a single motif 11 into four depressions 16.

[0154] From the top to the bottom of each motif 11, the projections 15 are angled towards the centre of the strainer base part 61. Thus, each circular rim 12 extends further outwards than the bottom of each projection 15; this creates a serrated profile of thestrainer base part 61 (for example, when viewed in the x-y plane of Figure 3), which may help the strainer base part 61 to resist uprooting.

[0155] It should be appreciated that the strainer base part 61 is not limited to the exterior shape shown in Figure 3. For example, the motif 11 may have a different surface shape, for example wherein the projections 15 are absent. In other examples, the motif 11 may be absent, and other surface patterns may be present, such as ridges or other shapes which provide a serrated profile. In the example shown in Figure 5, the outer surface of the strainer base part 61 is a mesh. In some examples, the finish of the outer surface may be roughened to increase traction underground.

[0156] Referring again to Figure 3, and to Figure 6, the second end 8, 82 of the strainer base part 61 may comprise a second opening 92 which exposes / opens into the cavity 10. Thus, in some examples, the strainer base part 61 may be a tube or substantially tubular having an opening at each end 8, for example as shown in Figures 3 and 6. Figure 6 shows a cutaway of a section of the base body part 61, the cutaway revealing the walls of the cavity 10 and the second opening 92.

[0157] As will be described in more detail hereinafter, the strainer base part 61 (and other base parts 6 according to the present application) may be driven into the ground using a driving tool and post-driving equipment (not shown). The driving tool is inserted into the base part 6 and applies a driving force for ground insertion. In examples where the second opening 92 is present, the driving tool is dimensioned to project through the second opening 92. This may help to avoid damage to the base part 6 during installation by transferring a portion or most of the stresses of ground penetration to the driving tool. In other examples of the strainer base part 61, the second opening 92 may not be present such that the second end 82 is sealed.

[0158] In some examples, the second end 82 may include a domed surface such that the tip of the strainer base part 61 is rounded. In other examples, the tip of the strainer base part 61 may be pointed. The shape of the tip may be designed to maximise ease of ground penetration.

[0159] In some examples, the strainer base part 61 may be formed of separate constituents or pieces, preferably formed of different materials, as will now be explained. Referring to Figure 7, an exploded view of the strainer base part 61 is shown.The second end 82 may comprise a cap 17 which forms the tip of the strainer base part 61. In the example shown in Figures 3 and 6, the cap is rounded, and the base of the cap 17 includes the second opening 92. The cap 17 is separate to the other constituents or pieces of the strainer base part 61, such as a base part body 18. The base part body 18 forms a majority of the strainer base part 61; it includes the first opening 91, extends along the length of the strainer base part 61, and encloses a majority of the cavity 10. In Figure 7, the base part body 18 is divided into two pieces for ease of illustration.

[0160] In examples where the cap 17 and base part body 18 are present, the strainer base part 61 may further comprise a thrust ring 19. The thrust ring 19 is dimensioned to partially slot over both the cap 17 and the base part body 18 such that the thrust ring 19 is positioned therebetween. The thrust ring 19 may be dimensioned to sit flush with the surface of the cap 17 and / or base part body 18. Generally speaking, the thrust ring 19 may help to avoid damage to the strainer base part 61 during installation by taking all or most of the remaining driving force not handled by the driving tool.

[0161] In some examples, the base body part 18 is manufactured as identical halves (along its length), as shown in Figure 7, which are then clipped together to form the complete base body part 18. As the strainer base part 61 is being driven into the ground, it can experience significant resistance and shock reactive forces as it encounters stones etc. in the soil. Thus, there is a risk that the halves of the base body part 18 will separate during ground insertion. The thrust ring 19 can help to combat this by holding the halves of the base body part 18 together and taking all or most of the driving and reactive forces that would have otherwise been experienced by the base body part 18. As will be described in more detail hereinafter, this is realised by how the driving tool (not shown) and the thrust ring 19 engage with each other.

[0162] In a preferred example, the base part body 18 and the cap 17 are both formed of plastic, whereas the thrust ring 19 is formed of metal, such as steel. Thus, the steel thrust ring 19 may be particularly robust against the driving and reactive forces experienced during ground insertion. Other aspects of the strainer base part 61 will be described hereinafter.

[0163] Referring now to Figure 8, an inner tube 20 of the strainer post 2 is shown in perspective view. As with the strainer top part 71, the inner tube 20 is partially insertable into the strainer base part 61. After the strainer base part 61 has beeninserted into the ground, the inner tube 20 is inserted through the first opening 91 such that a section of the inner tube 20 extends from the strainer base part 61.

[0164] As hereinbefore described, the strainer top part 71 is approximately columnar in shape; specifically, the strainer top part 71 is a tube (as will be described in more detail hereinafter) which is dimensioned to slot over the inner tube 20 when inserted into the strainer base part 61. Thus, the strainer post 2 is a multipart post, preferably comprising the three following major parts: the strainer base part 61, the inner tube 20, and the strainer top part 71.

[0165] At a certain region (not shown) along the length of the strainer post 2, the crosssection of that region includes the inner tube, the strainer top part 71, and the strainer base part 61. In this region, the strength of the strainer post 2 is enhanced by the overlapping of the three major parts of the strainer post 2. Preferably, this region overlaps the ground level threshold.

[0166] In some examples, as shown in Figure 8, the inner tube 20 comprises an inner body tube 21 and a sleeve 22 encasing or wrapped around a section of the inner body tube 21. Preferably, the inner body tube 20 is formed of metal, such as galvanised steel, and the sleeve 22 is formed of plastic. The sleeve 22 is dimensioned to fit closely into the cavity 10 of the strainer base part 61. Thus, the shape of the sleeve 22 is defined by the shape of the cavity 10. Typically, the sleeve 22 has a columnar shape. The sleeve 22 does not extend through the second opening 92 and, instead, rests on the cap 17. Once the inner tube 20 is fully inserted into the strainer base part 61, the sleeve 22 is surrounded by the strainer base part 61 and, thus, obscured from view -as shown in Figure 9.

[0167] A section of the inner body tube 21 is also within the strainer base part 61. The inner body tube 21 has a smaller diameter than the sleeve 22; this means that a void (not shown) is defined between the inner surface of the strainer base part 61 and the inserted section of the inner body tube 21. The strainer top part 71 is dimensioned to slot into this void when being inserted into the strainer base part 61, forming the strainer post 2 - an example of which is shown in Figure 10. Around the void, the cavity 10 also widens compared to the remainder of the strainer base part 61. This is to account for the outer diameter of the strainer top part 71 being larger the outer diameter of the sleeve 22 (and driving tool, which will be described hereinafter).The strainer top part will now be described in more detail. Referring to Figure 11, several pieces of the strainer top part 71 are shown in perspective view. Referring also to Figure 12, the strainer top part 71 is shown in perspective view, which has been assembled from the pieces shown in Figure 11

[0168] The strainer top part 71 comprises an interior tube 23, which slides over the inner body tube 21 during installation. The strainer top part 71 further comprises an exterior piece 24, which is shaped so as to surround the interior tube 23, as will be described in more detail hereinafter. A spacer piece 25 is arranged therebetween so as to separate the interior tube 23 and the exterior piece 24. The strainer top part 71 further comprises a top cap 26 and a bottom cap 27, which are configured to slot into top and bottom ends of the exterior piece 24 respectively.

[0169] In a preferred example, the strainer top part 71 may comprise an additional spacer tube 28. The strainer top part 71 does not need to be as strong at the top as it is at the bottom. Therefore, the interior tube 23 is not required to extend along the whole length of the strainer top part 71. Instead, the additional spacer tube 28 (which will be made of cheaper material than the interior tube 23) is positioned alongside the interior tube 23. Thus, the additional spacer tube 28 and the interior tube 23, in combination, extend along substantially the whole length of the strainer top part 71.

[0170] Preferably, the interior tube 23 may be formed of metal, such as galvanised steel. Shortening the length of the interior tube 23 by use of the additional spacer tube 28 avoids using an unnecessary amount of steel. In these cases, the additional spacer tube 28 will be formed of plastic.

[0171] The sub-component arrangement of the strainer top part 71, for example shown in Figure 11, helps to optimise the relationship between strength / weight / cost and the practicality of installation in the field. In a preferred example, the strainer top part 71 may be multi-material. For example, the exterior piece 24 may be formed of metal (such as galvanised steel), as well as the interior tube 23 as previously mentioned. The spacer piece 25 and the top and bottom caps 26, 27 be formed of plastic, as well as the additional spacer tube 28 as previously mentioned.

[0172] In some examples, the exterior piece 24 may be a tube. In other examples, for example shown in Figure 11, the exterior piece 24 may have a cylindrical shape but include a gap 29 along its length. This may be due to the technique(s) used to fabricate the exterior piece 24; a sheet of steel may be rolled into a cylindrical ornear-cylindrical shape to form the exterior piece 24. The exterior piece 24 may then be held in shape by interlocking it with the spacer piece 25. It may prove to be economical and advantageous for the exterior piece 24 to be welded into a tube shape after it has been formed. In such a case, the spacer piece 25 is still present but will simply slot inside the exterior piece 24 (now formed as a tube).

[0173] Although the exterior piece 24 may be a cylindrical shape or near-cylindrical shape, rather than a perfect tube, the exterior piece 24 must have sufficient rotational symmetry (about the axis of installation) so as to adequately align with the strainer base part 61 during installation.

[0174] As hereinbefore described, during installation, the strainer top part 71 is inserted into the strainer base part 61. During insertion, the strainer top part 71 is orientated axially (about the axis of installation) to engage an interlocking mechanism between the strainer top part 71 and the strainer base part 61. This interlocking mechanism will now be described.

[0175] The interlocking mechanism between the strainer top part 71 and the strainer base part 61 (herein referred to as "strainer interlocking mechanism") is realised by the insertion of a plurality of projections into a plurality of respective holes. Referring specifically to Figures 11 and 12, the strainer top part 71 comprises at least one row of holes 30. The holes 30 are provided in the outer surface of the strainer top part 71 (specifically, the exterior piece 24, as shown in Figure 11) in the region which is inserted into the strainer base part 61. Preferably, the at least one row of holes 30 wraps around the circumference of the exterior piece 24. In a preferred example, such as that shown in the figures, the strainer top part 71 comprises two neighbouring rows of holes 30, each row wrapped around the circumference of the exterior piece 24.

[0176] The strainer base part 61 comprises at least one cuff part 31 which conforms to an inner surface of the strainer base part 61. Preferably, the strainer base part 61 comprises a pair cuff parts 31 - which are shown in Figure 7 - with each cuff part 31 arranged to address an opposite side of the strainer top part 71. The at least one cuff part 31 is positioned towards the first end 81 and sits within grooves 32 of the strainer base part 61. The at least one cuff part 31 is preferably formed of metal, such as galvanised steel. The at least one cuff part 31 comprises at least one row of projections or tabs 33. The position of the at least one row of projections 33 in the cuff part 31 corresponds to the position of the holes 30 in the strainer top part 71. Thismeans that each projection 33 can be inserted into a respective hole 30 after the strainer top part 71 is inserted into the strainer base part 61.

[0177] The corresponding positioning of the projections 33 and the holes 30 can be seen clearly in Figure 13. Figure 13 shows the insertable region of strainer top part 71, which comprises the holes 30, and a pair of cuff parts 31 (with the strainer base part 61 omitted) in perspective view. Due to the cylindrical or near-cylindrical shape of the exterior piece 24, the at least one cuff part 31 "wraps" around the strainer top part 71 after insertion. As shown in Figure 13, in examples where there are two neighbouring rows of holes 30, there are two corresponding rows of projections 33 on each cuff part 31.

[0178] After insertion of the strainer top part 71, the strainer top part 71 is rotated until there is alignment between the holes 30 and projections 33. At which point, the projections 33 are pushed into the holes 30, thereby interlocking the top strainer part 71 and the strainer base part 61. Thus, the strainer interlocking mechanism allows the strainer top part 71 to be aligned in situ in e.g., 10° rotational increments whilst still providing resistance against the upwards and rotational forces which may be imposed on the strainer top part 71 when the wire netting 4 is subsequently attached and tensioned.

[0179] The spacing between the holes 30 / projections 33 within a single row define the rotational increments of the strainer interlocking mechanism (i.e., the maximum rotation before the holes 30 and projections 33 interlock). In the example shown in the figures, there is a 10° rotational increment. Once engaged, the strainer interlocking mechanism provides a robust means of securing the strainer top part 71 to the strainer base part 61. The strainer post 2 can only be removed and disassembled by digging out the strainer base part 61 and levering apart the base body part 18, for example by leveraging apart the two halves of the base body part 18.

[0180] Intermediate post 3

[0181] The intermediate post 3 according to the present application will now be described in greater detail. Referring now to Figure 14 and 15, two perspective views of the intermediate base part 6, 62 are shown. The intermediate base part 62 has the same design as the strainer base part 61, aside from certain aspects which will be explained hereinbelow.As with the strainer base part 61, in a preferred example, the intermediate base part 62 may be a multi-component design which comprises the cap 17, base body part 18, and the thrust ring 19 hereinbefore described. Similarly, intermediate base part 62 preferably may include the second opening 92 - allowing the driving tool to project through the bottom of the intermediate base part 62 during installation.

[0182] However, the intermediate base part 62 may be smaller in all dimensions than the strainer base part 61. Thus, the strainer post 2 may have greater ground penetration than the intermediate post 3. Furthermore, the intermediate base part 61 may have a different exterior shape which, for example, comprises different surface shape motifs 11 than the strainer base part 61 (and optionally a different number of motifs 11).

[0183] In the example shown in Figures 14 and 15, each motif 11 (six in total) of the intermediate base part 62 comprises a conical frustrum-shaped surface 13 and a cylindrical surface 14, similar to the strainer base part 61. However, unlike the strainer base part 61, the motifs 11 do not include a circular rim 12 and four projections 15 for each motif 11. Instead, the exterior shape comprises four evenly spaced projections 34 running through the motifs 11 and along the length of the intermediate base part 62. As with the strainer base part 61, the exterior surface of the intermediate base part 62 is not limited to the design shown in Figures 14 and 15. The exterior surface may be shaped to maximise ease of ground penetration and to resist uprooting.

[0184] The intermediate base part 62 has a different interlocking mechanism to the strainer interlocking mechanism, and therefore does not include the at least one cuff part 31 and corresponding grooves 32. The interlocking mechanism for the intermediate base part 62 will be described in more detail hereinafter.

[0185] As hereinbefore described, the intermediate top part 72 is insertable into the first opening 91 of the intermediate base part 62. Referring now to Figure 16, the intermediate top part 7, 72 is shown in perspective view. The intermediate top part 72 comprises two main pieces: a bar 35 for securing the wire netting 4 thereto and a sleeve 36 around the lower section of the bar 35, which is dimensioned to slot into the intermediate base part 62. Preferably, the bar 35 may be formed of metal, such as galvanised steel, and the sleeve 36 may be formed of plastic.

[0186] The bar 35 has a non-linear cross-section; this is shown in Figure 17. The crosssection is taken along the plane substantially perpendicular to the axis of installation;in other words, the plane is substantially parallel to the ground at the point of installation. The non-linear cross-section includes a curved section 37 such that the face 38 of the bar 35 along the curved cross-section forms an arc. Preferably, the radius of the arc is substantially equal to the radius defining the curvature of the strainer top part 71; this helps provide a universal attachment means for the wire netting 4 between the strainer and intermediate posts 2, 3. This will be expanded upon hereinafter.

[0187] The non-linear cross-section of the bar 35 may be shaped so as to provide sufficient structural stiffness, such as by providing some or a majority of the cross-sectional area away from the axis of installation (i.e. the central axis of the intermediate post 3). For example, as shown in Figure 17, the non-linear cross-section may include an L-shaped section 39 projecting away from the curved section 37 and the central axis. The bar 35 may interlock with the sleeve 36 by fitting onto a pair of nodules 40 in an interior space of the sleeve 36. Figure 18 shows a cutaway of the sleeve 36, revealing the interior space and the nodules 40, with the bar 35 slotted over the nodules 40.

[0188] Once the intermediate top part 72 is fully inserted into the intermediate base part 62, the intermediate post 3 is formed, as shown in Figure 19. The sleeve 36 is surrounded by the intermediate base part 62 and, thus, obscured from view. During insertion, the intermediate top part 72 is orientated axially (about the axis of installation) to engage an interlocking mechanism between the intermediate top part 72 and the intermediate base part 62. The sleeve 36 has a shape which follows / conforms to the shape of the cavity 10, which is substantially cylindrical; this means that the intermediate top post 72 can be orientated before finally being pushed into its interlocked position. This interlocking mechanism will now be described.

[0189] The stresses experienced by a given intermediate post 3 during use are a fraction of those seen by a given strainer post 2. Consequently, the interlocking mechanism attaching the intermediate top part 72 to the intermediate base part 62 does not need to be as robustly designed. Nevertheless, the mechanism still must provide the user with the opportunity to orientate the intermediate top post 72 axially before locking it into place. This is because, even if the intermediate base part 62 is aligned before being knocked into the ground, the part 62 could still twist during the installation process - particularly in stony ground conditions.

[0190] The interlocking mechanism between the intermediate top part 72 and the intermediate base part 62 (herein referred to as "intermediate interlockingmechanism") is realised by one or more projections on an outer surface of the sleeve 36 engaging with one or more depressions in an inner surface of the intermediate base part 62. Specifically, the intermediate interlocking mechanism is realised by an interlocking mechanism which restricts vertical movement (herein also referred to as "vertical interlocking mechanism") and an interlocking mechanism which restricts rotational movement (herein "rotational interlocking mechanism"). The rotational movement is about the axis of installation.

[0191] The vertical interlocking mechanism prevents the intermediate top part 72 from being uprooted. The rotational interlocking mechanism prevents the intermediate top part 72 from spinning around the axis of installation (which, in Figure 19, is the x axis). This mechanism also determines the granularity of the rotational alignment of the intermediate top part 72 (herein also referred to as the "rotational increment"). In the example shown in Figure 20, described herein now, the rotational increment is 10°.

[0192] Referring to Figure 20, an upper section of the sleeve 36 of the intermediate top part 72 is shown in perspective view. The sleeve 36 comprises a plurality of projections 41 which, together, form a corrugated pattern on the outer surface of the sleeve 36. To prevent rotational movement, the projections 41 extend along the axis around which the intermediate top part 72 rotates (i.e., the axis of installation). The projections 41 do not extend along the complete length of the sleeve 36. Furthermore, in the example shown in Figure 20, the projections 41 are only provided around a portion of the circumference of the sleeve 36. However, in some examples, the projections 41 may cover the whole of the circumference.

[0193] Referring also to Figure 21, a cutout view of the intermediate base part 62 is shown, which reveals the plurality of depressions 42 in the inner surface of the intermediate base part 62. The position of the depressions 42 correspond to / match the position of the projections 41 on the sleeve 36. In some examples, the depressions 42 are only provided around a portion of the circumference of the inner surface of the intermediate base part 62, as shown in Figure 21. In other examples, the depressions 42 may be provided around the whole of the circumference.

[0194] A cross-section of the intermediate base part 62 and the sleeve 36 once interlocked is shown in Figure 22. The cross-sectional view is in the y-z plane, which is perpendicular to the axis of installation (which, in this case, is the x axis). In some examples, as shown in Figure 22, some of the projections 41 may have a respective depression 42to engage with in order to provide the rotational interlocking mechanism. In other examples, all the projections 41 may have a respective depression 42 to engage with.

[0195] The vertical interlocking mechanism is provided by different projections / depressions. Referring again to Figure 20, the sleeve 36 further comprises at least one projection 43 circling the outer surface of the sleeve 36. The at least one projection 43 lies within a plane perpendicular to the installation direction, so as to provide resistance to uprooting. In some examples, the sleeve 36 comprises a pair of projections 43, each provided either side of the corrugated projections 41 along the length of the sleeve 36.

[0196] Referring to Figure 23, the intermediate base part 62 and interlocked sleeve 36 in profile is shown, with one half of the intermediate base part 62 removed to expose the sleeve 36. Figure 23 shows the projections 41 hereinbefore described, as well as the pair of projections 43 circling the upper and lower parts of the sleeve 26, with the plurality of projections 41 therebetween. As shown in profile in Figure 23, the intermediate base part 62 includes a pair of depressions 44 within its inner surface. These depressions 44 are positioned to correspond to the pair of projections 43. This allows for the projections 43 to engage with the depressions 44 to provide the vertical interlocking mechanism.

[0197] Wire attachment means

[0198] To form tensioned fencing 1, the wire strands of the wire netting 4 (see Figure 1) are attached or otherwise secured to the non-inserted regions of the top parts 7 of the posts 2, 3 according to the present application. Any suitable means for attaching wire to the strainer and intermediate posts 2, 3 may be used. The strainer and intermediate posts 2, 3 preferably use the same attachment means.

[0199] A preferred example of suitable attachment means using a staple arrangement (herein also referred to as "staple attachment means") will now be described. Referring now to Figure 24, a section of the strainer top part 71 forming part of tensioned fencing 1 is shown in perspective view. Referring also to Figure 25, a section of the intermediate top part 72 forming part of tensioned fencing 1 is shown in perspective view.

[0200] As shown in both Figures 24 and 25, a wire strand 45 is threaded between a respective staple piece 46 and the outer surface of the strainer / intermediate top part 7. The staple piece 46 is removably attached to the post 2,3 by, firstly, inserting the staple piece 46 into a neighbouring pair of holes 47 in the top part 7; the staple piece46 is then held in place by a locking piece 48. This will be described in more detail hereinafter.

[0201] The size and shape of the hole for wire threading formed by the staple piece 46 and outer surface of the top part 7 allows the wire strand 45 to have some vertical and horizontal degree of movement. Thus, the staple attachment means allows the wire strands 45 to be securely, but loosely, held by the posts 2, 3. In a preferred example, the wire strands 45 of the wire netting 4 are attached to the strainer top part 71 and intermediate top part 72 in the same tensioned fencing 1 using the same attachment means, for example the staple attachment means. It should also be appreciated that, typically, a plurality of wire strands 45 will be attached to a single installed post 2, 3. Each wire strand 45 will be attached using a respective attachment means.

[0202] Where the staple attachment means is used for both strainer and intermediate posts 2, 3, it is cheaper and more convenient if identical staple pieces 46 and locking pieces 48 are used for all the posts 2, 3. This is possible when i) the thickness of the exterior piece 24 of the strainer post 2 and the bar 35 of the intermediate post 3 are the same or substantially the same, and ii) the radius defining the curvature of the exterior piece 24 and the radius of the arc of the face 38 of the intermediate post 3 are the same or substantially the same. Conditions i) and ii) must be satisfied in order for the holes 47 in the strainer post 2 to have the same dimensions as the holes 47 in the intermediate post 3.

[0203] The thickness, ti, of the exterior piece 24 (see Figure 11) may be from 1.6 mm to 2.0 mm, for example, 1.8 mm. The thickness, t2, of the bar 35 (see Figure 17) may be from 1.6 mm to 2.0 mm, for example, 1.8 mm. Thicknesses ti and t2 may be the same or substantially the same. These thicknesses ti and t2 are measured along the plane perpendicular to the axis of installation, which may be substantially parallel to the plane across which the surface of the ground extends. For example, wherein the posts 2, 3 are inserted into the ground along the x axis, the thicknesses ti and t2 will lie within the y-z plane. The outer diameter, d, (see Figure 12) of the exterior piece 24 may be from 60 mm to 120 mm, for example 89.9 mm or 90.0 mm.

[0204] Referring now to Figures 26 and 27, the staple piece 46 will be described in more detail. Figure 26 shows the staple piece 46 in perspective view at a diagonal angle, whereas Figure 27 shows the staple piece 46 from an aerial view. The staple piece 46 is dimensioned so that it can be inserted into two neighbouring holes 47 which are positioned along the length of the top part 7 (in other words, along the direction of theaxis of installation). For ease of illustration, these holes 47 will herein be referred to as upper (or first) hole 471 and lower (second) hole 472 (see Figure 29).

[0205] Each end 49 of the staple piece 46 is inserted into a respective hole 47 during installation. A first end 49, 491 of the staple piece 46 is inserted into the upper hole 471 and the second end 49, 492 of the staple piece 46 is inserted into the lower hole 472. The first and second ends 491, 492 are connected via a staple piece body 50. The staple piece body 50 is shaped to help facilitate attachment of the staple piece 46 to the post 2, 3 and to hold the wire strand 45, as will be explained in more detail hereinafter.

[0206] Each end 49 of the staple piece 46 comprises a tip region 51 (at the end of which the staple piece 46 terminates) and a narrow region 52 positioned between the tip region 51 and the staple piece body 50. The demarcation between the narrow region 52 and the tip region 51 and the demarcation between the narrow region 52 and the staple piece body 50 is defined by their change in widths. These demarcations are illustrated by dashed lines in Figures 26 and 27, merely for the sake of illustration. The width, wi, of the narrow region 52 is narrower than the width, W2, of the tip region 51 and the width, W3, of the staple piece body 50. The widths of the staple piece 46 are defined along an axis (herein "width axis") perpendicular to the axis of installation. In Figures 26 and 27, the axis of installation is the x axis and the axis along which the widths (wi, W2, W3) extend is the y axis.

[0207] The widths wi, W2 are constant along the length of the tip region 51 and narrow region 52. The length of these regions 51, 52 are along the axis perpendicular to both the width axis and the axis of installation, which is the z axis in Figure 26 and 27.

[0208] Likewise, the width, W3, of the staple piece body 50 is also substantially constant along its length (which is along the staple piece's 46 path between the first end 491 and the second end 492). The widths wi, W2, W3 are constant so as to help aid insertion into the holes 47 and to help prevent the staple piece 46 from becoming dislodged.

[0209] The presence of the tip region 51 and the narrow region 52, and their relative widths, is defined by the design of the holes 47, which will now be described in greater detail. Referring now to Figure 28, one of the holes 47 is shown in perspective view. Both the upper and lower holes 471, 472 have the same design and dimensions. A plurality of these holes 47 may be provided in both the strainer posts 2 and the intermediate posts 3, for cases where the staple attachment means are used for both post types.Each hole 47 consists of two regions which, in combination, form the shape of the hole's 47 opening. These regions are a horizontal region 53 and a vertical region 54. The horizontal region 53 has a width, W4, greater than the width, ws, of the vertical region 54. The widths of the hole 47 are defined along the width axis hereinbefore described. In Figure 28, the axis along which the widths (W4, ws) extend is the y axis. Furthermore, the vertical region 54 extends from the centre of the horizontal region 53 downwards i.e. towards the bottom of the post 2, 3. In this way, the horizontal region 53 and the vertical region 54 form a T-shaped opening, as shown in Figure 28.

[0210] The staple piece 46 is inserted into the upper hole 471 and the lower hole 472 (see Figure 29) simultaneously, or near-simultaneously, by firstly inserting the tip region 51 into the horizontal region 53. This is possible because the width, W2, of the tip region 51 is narrower than the width, W4, of the horizontal region 53.

[0211] The width, W3, of the stable piece body 50 is wider than the width, W4, of the horizontal region 53. This prevents the staple piece 46 from being inserted into the post 2, 3 further than the boundary between the staple piece body 50 and the narrow region 52. Thus, forward insertion of the staple piece 46 is terminated once an edge 55 (see Figure 27) of the staple piece body 50 is in direct contact with the outer surface of the post 2, 3 and the narrow region 52 is intersecting the bar 35 / exterior piece 24. As shown in Figure 27, the edge 55 of the staple piece body 50 is curved so as to match the curve of the face 38 of the intermediate post 3 or the exterior piece 24 of the strainer post 2.

[0212] Next, the staple piece 46 is slid downwards so as to occupy the vertical region 54, as shown in Figure 29. This is possible because the vertical region 54 has a greater width, ws, than the narrow region 52. Once fully engaged with the vertical region 54 (such that the bottom of the staple piece 46 contacts the bottom of the hole 47), the staple piece 46 cannot move in or out of the post 2, 3 without applying a vertical movement. This is because both the staple piece body 50 and the tip region 51 have a width greater than the vertical region 54.

[0213] It should be appreciated that although Figure 29 shows the staple piece 46 inserted into the intermediate post 3, the staple piece 46 is inserted in the same for the strainer post 2 (as the hole 47 has the same dimensions for each post 2, 3). It should also be appreciated that any suitable dimensions of the hole 47 may be selected, with the staple piece 46 being dimensioned accordingly such that it may be inserted into the hole 47 as hereinbefore described. Preferably, the width, wi, of the narrow region 52 should approach or be close to the width, ws, of the vertical region 54 such that thestaple piece 46 does not rattle / move significantly once fully engaged with the vertical region 54.

[0214] Referring now to Figure 30, a further perspective view of the staple piece 46 is shown. The staple piece body 50 has a shape which includes two neighbouring arches 56, which are upper and lower arches 561, 562. The arches 561, 562 bow out in a nearcircular shape with respect to the outer surface of the posts 2,3, for example as shown in Figure 29. Furthermore, the arches 561, 562 are spaced apart along the vertical direction to form a valley 57 therebetween. As shown in Figure 30, the staple piece body 50 may form a B-shape in which the lower arch 562 is greater in size than the upper arch 561 such that the lower arch 562 bows out to a greater extent than the upper arch 561.

[0215] A wire strand 45 may be threaded through one or both arches 56. In a preferred example, a wire strand 45 may be threaded through the lower arch 56 such that the wire strand 45 is between the staple piece 46 and the outer surface of the strainer / intermediate post 2,3. The design of the staple piece 46 has several advantages. The arch shape allows for sufficient space for the wire strand 45 to be held loosely, with the option of having two wire strands 46 (one through each arch 56) attached to the post 2, 3. The staple piece 46 may be inserted into any pair of the plurality of holes 47 in the top part 7, meaning there is significant flexibility in the vertical positioning of the staple piece 46.

[0216] In preferred examples, the upper and lower arches 56 of the B-shaped staple piece body 50 may be lopsided. As used herein, the term "lopsided" refers to examples in which, for each arch 56, the lower section of the arch 56 extends out to a greater extent than the upper section of the arch 56. This lopsided shape of each arch 56 may help to reduce the leverage experienced by the bottom end of the staple piece 46 (e.g. the second end 492) in a case where the wire strand 45 is pushed against the top of the lower arch 562. The lopsided B-shaped design of the staple piece 46 directs any upwards thrust towards the upper hole 471; this is where the staple piece 46 and the locking piece 48 are fitted tightly together and, therefore, should more easily resist the upwards force. Without the lopsided B-shaped design, the majority of upwards force may be applied to the top of the lower arch 562; this may increase the likelihood of the second end 492 of the staple piece 46 from being dislodged from the lower hole 472.The shape of the staple piece body 50 is also configured to engage with the locking piece 48, as will now be described. Referring now to Figure 31, the locking piece 48 is shown in perspective view. The shape of the locking piece 48 includes two curved sections 58 forming a reverse S-shape with respect to the outer surface of the posts 2, 3 (see Figure 32). The two curved sections 58 are an upper curved section 581 and a lower curved section 582. The curved sections 581, 582 lie within the same plane, but project / curve outwards in opposite directions. The locking piece 48 further comprises a first end 59, 591 and a second end 59, 592, with the curved sections 581, 582 between the ends 59. The upper curved section 581 terminates with the first end 591, while the lower curved section 582 terminates with the second end 592.

[0217] Figure 32 shows the process of inserting the locking piece 48 into the post 2, 3 to provide the staple attachment means. Merely for the sake of illustration, the locking piece 48 is being inserted into the intermediate post 3; however, the same process applies to the strainer post 2.

[0218] Once the staple piece 48 is inserted into the upper and lower holes 471, 472 and engaged with the vertical regions 54, the first end 591 of the locking piece 48 is inserted into the horizontal region 53 of the upper hole 471 (see left illustration). The locking piece 48 is then pivoted such that the first curved section 581 is threaded through the upper hole 471. The curved shape of the first curved section 581 allows for the pivoting motion.

[0219] Due to the reverse S-shape of the locking piece 48, the second end 592 approaches the valley 57 of the staple piece 46 while being threaded through the upper hole 471. Finally, the second end 592 is wedged into the valley 57 (see right illustration), locking the staple piece 46 in place via an interference fit with the locking piece 48. For ease of illustration, Figure 33 shows the staple piece 46 and the locking piece 48 fully engaged in the interference fit, but with the post 2,3 omitted. The staple piece 46 and the locking piece 48 may be formed of metal, such as galvanised steel.

[0220] Furthermore, the locking piece 48 is dimensioned to have a close or tight fit with the horizontal section 58 within the vertical distance between the top of the inserted staple piece 46 and the top of the horizontal section 58, whilst allowing for some tolerance for the pivoting motion during insertion.

[0221] Some example dimensions will now be described, although it should be appreciated that the relative dimensions between the holes 47 and the staple piece 46 and locking piece 48 are more significant. The holes 47 and components of the staple attachmentmeans may be resized according to various requirements, but preferably should be dimensioned such that there is a close fit of the staple piece 46 and the locking piece 48 within the upper and lower holes 471, 472. With respect to the staple piece 46: the width, wi, may be from 2.4 mm to 4.5 mm, the width, W2, may be from 4.8 mm to 7.3 mm, and the width, W3, may be from 6.0 mm to 8.5 mm. With respect to the hole 47: the width, W4, may be from 5.6 mm to 8.1 mm and the width, ws, may be from 2.5 mm to 4.6 mm. The total height, h2, of the horizontal and vertical regions 53, 54 combined (in Figure 28, along the x axis) may be from 2.7 mm to 4.7 mm.

[0222] To provide a tight or close fit, the staple piece 46 may have a thickness, te (see Figure 33), from 1.0 mm to 2.0 mm and the locking piece 48 may have a thickness, t4, from 1.5 mm to 2.5 mm. The thickness t3 and t4 are measured along the axis of installation (along the same direction as h2). Both the staple piece 46 and the locking piece 48 preferably have a uniform thickness.

[0223] In a preferred example, the staple piece 46, the locking piece 48, and the hole 47 (both upper and lower) have the following combination of dimensions: Wi = 3.0 mm, W2 = 5.6 mm, W3 = 6.8 mm, W4 = 6.4 mm, W5 = 3.1 mm, h2 = 3.7 mm, t3 = 1.5 mm, and t4 = 2.0 mm.

[0224] In this preferred example, there is about 0.2 mm difference between the height h2 and the combined thickness of the staple piece 46 and the locking piece 48. The rotation of the locking piece 48 requires there to be a small gap, but preferably it should be as small as possible to ensure a tight fit once the locking piece 48 has been wedged into the valley 57 of the staple piece 46.

[0225] Referring to Figure 34, the wire strand 45 is shown attached to the intermediate post 3 via the staple attachment means. Referring to Figure 35, the wire strand 45 is shown attached to the strainer post 2 via the staple attachment means. With both posts 2, 3, the wire strand 45 is attached in the same way with the same arrangement between the staple piece 46 and locking piece 48. During installation of the tensioned fencing 1, the wire netting 4 is strung against the installed posts 2, 3 before the wire stands 45 are attached to the posts 2, 3 e.g. via the staple attachment means.

[0226] Referring specifically to Figure 35, the spacer piece 25 may comprise a plurality of cavities or voids 60 (see also Figure 11). When the staple attachment means are used, at least some of the voids 60 are positioned behind the holes 47. This is to allow space for the staple piece 46 and the locking piece 48 to be inserted into the holes 47.Driving tool

[0227] As hereinbefore described, both the strainer and intermediate base parts 61, 62 may be inserted into the ground using a driving tool. The driving tool is mechanically coupled to post-driving equipment (not shown) in order to supply a mechanical force to the driving tool (for example, by striking the driving tool), which in turn applies a driving force to the post 2, 3 for ground insertion.

[0228] A different driving tool is used for the strainer base part 61 compared to the intermediate base part 62, although the driving tools for each post type share significant design features. Furthermore, each driving tool is reusable. This means that a single driving tool can be used to install every strainer post 2 and a different, single driving tool can be used to install every intermediate post 3.

[0229] Each driving tool takes the general shape of a columnar rod. The rod extends along the axis of installation as the driving tool is being inserted into the base part 6. Via engagement with the post-driving equipment, the driving tool applies the driving force along the direction of installation.

[0230] Referring now to Figure 36, a driving tool 63 for the strainer base part 61 (herein "strainer driving tool" 631) is shown in perspective view. Referring also to Figure 37, the strainer driving tool 631 is shown fully inserted into the strainer base part 61. The strainer driving tool 631 includes a collar or flange 64 which is positioned between a first end 65, 651 and a second end 65, 652 of the strainer driving tool 631. The position of the collar 64 along the length of the strainer driving tool 631 is defined by the dimensions of the strainer base part 61. Specifically, the collar 64 is positioned so as to contact the top of the strainer base part 61 once fully inserted - as shown in Figure 37. During insertion, the collar 64 applies a portion of the driving force to the top of the strainer base part 61.

[0231] In the example shown in Figure 37, the strainer base part 61 includes the second opening 92. The second end 652 of the strainer driving tool 631 projects through this opening 92 once fully inserted. This means that the force required to first pierce the ground during post installation can be mostly experienced by the strainer driving tool 631, rather than the strainer base part 61. Preferably, the strainer driving tool 631 may be dimensioned to closely fit with the cavity 10 of the strainer base part 61.The first end 651 (or top end) of the Stainer driving tool 631 may take any suitable design. This design may depend upon the post-driving equipment. In the example shown in Figures 36 and 37, the strainer driving tool 631 comprises a plurality of handlebars 66. The handlebars 66 extend along the length of the strainer driving tool 631 but are positioned relative to each other in a circle around the central axis of the strainer driving tool 631. The handlebars 66 do not extend along the whole length between the first end 651 and the collar 64.

[0232] In some cases, the strainer base part 61 may become distorted whilst being driven into the ground by the strainer driving tool 631. This makes the strainer driving tool 631 difficult to remove. To dislodge the strainer driving tool 631 from the strainer base part 61, a user (not shown) can push / pull the handlebars 66 to apply a rotational force to the strainer driving tool 631 with respect to the axis of installation.

[0233] Referring now to Figure 38, a driving tool 63 for the intermediate base part 62 (herein "intermediate driving tool" 632) is shown in perspective view. Referring also to Figure 39, the intermediate driving tool 632 is shown fully inserted into the intermediate base part 62. The strainer and intermediate driving tools 63 function in the same way. The intermediate driving tool 632 also has the same design as the strainer driving tool 631, although its overall dimensions differ. This is because the strainer post 2 is larger than the intermediate post 3. The intermediate driving tool 632 scales with the size of the intermediate post 3 so as to properly engage with it during installation, and, preferably, closely fit with the cavity 10 of the intermediate base part 62.

[0234] The intermediate driving tool 632 includes the collar 64 as hereinbefore described. As shown in Figure 39, the collar 64 is positioned along the intermediate driving tool 632 so as to contact the top of the intermediate base part 61 once fully inserted. If the second opening 92 is present in the intermediate base part 62, the second end 652 of the intermediate driving tool 632 also projects through this opening 92. As with the strainer driving tool 631, the first end 651 of the intermediate driving tool 632 may have any suitable design.

[0235] Further details of how the driving tool 63 engages with the post 2,3 will now be described with reference to the intermediate driving tool 632 merely for the sake of illustration. It should be appreciated that the strainer driving tool 631 engages with strainer post 2 in the same way that the intermediate driving tool 632 engages with the intermediate post 3. The following details of how the driving tool 63 engages withthe post 2,3 apply to examples in which the post 2, 3 includes the cap 17 hereinbefore described.

[0236] Referring now to Figure 40, a cross-sectional view of the intermediate driving tool 632 inserted into the intermediate base part 62 is shown. A separate panel is also shown, which is a close-up, cross-sectional view of the intermediate driving tool 632 engaging with the cap 17 of the intermediate base part 62. The collar 64 includes a lip 67 which follows the circumference of the collar 64 and projects downwards (i.e. in the direction of installation). The lip 67 is dimensioned such that, when the collar 64 fully engages with the top of the intermediate base part 62, the rim of the intermediate base part 62 slots between the lip 67 and the central rod of the intermediate driving tool 632. In this way, the collar 64 is configured to hold the intermediate base part 62 together as it applies the driving force.

[0237] As shown in the separate panel of Figure 40, the intermediate driving tool 632 has a profile which closely fits with the lower region of the cavity 10 of the intermediate base part 62. The intermediate driving tool 632 further includes a narrow region 68 which is dimensioned to slot into the cap 17 and extend through the second opening 92. The remainder of the central rod of the intermediate driving tool 632 is wider than the narrow region 68; this remainder of the central rod is herein referred to as the driving tool body 69.

[0238] At the interface between the driving tool body 69 and the narrow region 68, the intermediate driving tool 632 includes a lower lip 73. The lower lip extends from the driving tool body 69 downwards (i.e. in the direction of installation) and follows the circumference of the driving tool body 69. As will now be described, the lower lip 73 is dimensioned so as to engage with the cap 17 of the intermediate base part 62.

[0239] Referring to both Figure 40 and Figure 6, the cap 17 includes a circular, narrow depression 74 within its inner surface. The lower lip 73 is dimensioned to slot into this depression 74 when the intermediate driving tool 632 is fully inserted into the intermediate base part 62.

[0240] At a point A along the length of the intermediate base part 62, the width of the cavity 10 increases such that the width below point A is less than the width above point A. Point A is above the cap 17 and, preferably, is closer to the second end 82 than the first end 81 of the intermediate base part 62. Preferably, the intermediate driving tool 632 is dimensioned to closely fit into the cavity 10. In such examples, the width of thedriving tool body 69 increases at point A (compared to its width below point A) to form a ledge 690 extending perpendicular to the direction of installation. The ledge 690 is positioned to contact a section of the inner surface of the intermediate base part 62 once the intermediate driving tool 632 is fully inserted.

[0241] Thus, the intermediate driving tool 632 is configured to evenly distribute the driving force between i) the top of the intermediate base part 62, via the collar 64, ii) the cap 17, via the lower lip 73, and ii) at point A therebetween, via the ledge 690. The thrust ring 19 encircles the cap 17 to provide additional integrity during application of the intermediate driving tool 632.

[0242] It should be appreciated that in other examples of the intermediate driving tool 632, the collar 64, lower lip 73, and / or the ledge 690 may not be present. As hereinbefore explained, in preferred examples, the intermediate driving tool 632 closely follows or fits the shape of the cavity 10. This means that in examples where the shape of cavity 10 differs compared to examples hereinbefore described, the shape of the intermediate driving tool 632 may differ correspondingly.

[0243] Strut and joining pieces

[0244] Any suitable supporting structure may be used to support the strainer posts 2 according to the present application. Some supporting structures / arrangements will now be described in greater detail. Referring to Figure 41, a section of tensioned fencing 1 is shown in perspective view. This section includes a strainer post 2 defining a corner of the fencing 1, as well as a pair of struts 5 arranged to support the strainer post 2 in an angled strut arrangement.

[0245] As used herein, "angled strut arrangement" refers to when a supporting strut 5 is angled with respect to the direction of post installation (in Figure 41, along the x axis). The pair of struts 5 are also angled with respect to each other along a plane perpendicular to the direction of post installation (in Figure 41, along the y-z plane). The minimum angle between the two struts 5 may be 70°. Although a pair of struts 5 are shown in Figure 41, in other examples a single strut 5 may support a single strainer post 2. For ease of illustration, the ground has been omitted from Figure 41.

[0246] In the angled strut arrangement, each strut 5 is attached to the strainer post 2 via a strut joining piece 75 - an example of which is shown in perspective view in Figure 42. The strut 5 and strut joining piece 75 engage via a ball-and-socket joint. This joint type allows for flexibility in the angular arrangement of the strut 5. Specifically, thestrut joining piece 75 includes a substantially cup-shaped depression 76 (herein "first cup-shaped depression" 761) which a first end (not shown) of the strut 5 is dimensioned to slot into. The first cup-shaped depression 761 projects out to a greater extent at the top compared to the bottom; this prevents the angled strut 5 from sliding out of the first cup-shaped depression 761.

[0247] The strut joining piece 75 is held against the strainer top part 71, as showing in Figure 41, by a pair of post cuffs 77. A surface (not shown) of the strut joining piece opposite to the first cup-shaped depression 761 is curved to match the curvature of the outer surface of the strainer top part 71.

[0248] Referring now to Figure 43, the strut joining piece 75 is shown engaged with a pair of post cuffs 77. The strut joining piece 75 comprises top and bottom rows of projections 78, each row positioned either side of the first cup-shaped depression 761. A post cuff 77 engages with each row of projections 78 via depressions 79 in the inner surface of the post cuff 77. Thus, the strut joining piece 75 removably interlocks with the pair of post cuffs 77. Preferably, the depression-projection interlock between the post cuffs 77 and the strut joining piece 75 may have a granularity of 10°. This allows for flexibility in the rotational position of the struts 5.

[0249] Referring also to Figure 44, each post cuff 77 takes the form of a ring, the depressions 79 being positioned in the inner surface of the ring. Each ring is dimensioned to surround the strainer top part 71 whilst holding / trapping the strut joining piece 75 against the strainer top part 71, as shown in Figure 41. Each post cuff 77 may be clamped to the strainer top part 71 using standard stainless steel eared clips 770. Thus, the design of the post cuff 77 allows for greater flexibility in where the struts 5 are attached to the strainer post 2.

[0250] More than one strut 5 can be connected at a variety of angles using the same pair of post cuffs 77. For example, in the example shown in Figure 41, two strut joining pieces 75 are held against the strainer top part 71 using the same pair of post cuffs 77. This allows for more than one strut 5 to be attached to the strainer post 2 at the same height. Thus, the angular strut arrangement according to the present application is aesthetically pleasing.

[0251] Using the same post cuffs 77, up to five struts 5 may be connected to a strainer post 2 at the same height according to the angled strut arrangement herein described. Inpractice, typically one or two struts 5 are attached, with occasionally a third strut 5 being needed.

[0252] Referring now to Figure 45, the strut 5 in isolation is shown in perspective view. The strut 5 has first and second ends 80, 801, 802. The first end 801 engages with the first cup-shaped depression 761 as hereinbefore described. As will be later described, the second end 802 engages with a second cup-shaped depression 76, 762 (see Figure 45). The tip of each end 80 is rounded so as to match the shape of their respective cup-shaped depressions 76.

[0253] During installation, the post cuffs 77 (and the strut joining piece(s) 75) are initially secured loosely to the strainer post 2 and set up slightly above where the final chosen height will be. The installation of the strut 5 is then achieved by sliding the post cuffs 77 down the strainer post 7 until the strut 5 is fully engaged with both the first and second cup-shaped depressions 761, 762. The eared clips are then tightened to clamp the post cuffs 7 in place.

[0254] Referring now to Figure 46, a base piece 83 is shown in perspective view. The base piece 83 comprises a flat surface, with a number of components / parts attached thereto. As shown in Figure 46, the flat surface may be substantially disk-shaped. A joint part 84 is mounted on a top surface of the base piece 83 and angled relative to it. The joint part 84 includes the second cup-shaped depression 762 at its tip. The angle of the joint part 84 relative to the base piece 83 is set according to the required angle of the strut 5.

[0255] A coupling tube 85 extends from a bottom surface of the base piece 83. The coupling tube 85 is dimensioned to slot into an intermediate base part 6, 62 hereinbefore described. Thus, once installed, the base piece 83 sits on the surface of the ground and is tethered / secured in place by attachment to the intermediate base part 62; this is shown in perspective view in both Figures 41 and 47. Other projections / components may extend from the bottom surface of the base piece 83 to help secure the base piece 83 into the ground. In other examples, the intermediate base part 62 may be replaced by a different design of base part 6.

[0256] The base piece 83 comprises a hole 86 which extends between its top and bottom surfaces. During installation, a stake 87 is threaded through this hole 86 and inserted into the ground, to provide additional purchase to the base piece 83. In a preferredexample, the stake 87 may have a hooked top end, as shown in Figure 47. The stake 87 may be a 300 mm J clip.

[0257] Alternatively, or in addition to, the angled strut arrangement, the tensioned fencing 1 may comprise one or more box strut arrangements. As used herein, a "box strut arrangement" refers to a bracing arrangement for a strainer post 2 which includes a second strainer post 2 connected by a horizontal strut 5 to the post 2 being supported.

[0258] Referring now to Figure 48, a horizontal joining piece 88 is shown in perspective view. The horizontal joining piece 88 is the same as the strut joining piece 75 but includes a third cup-shaped depression 763 instead of the first cup-shaped depression 761. The third cup-shaped depression 763 is directed horizontally (with respect to the strainer posts 2), rather than angled. The horizontal joining piece 88 is held against the strainer post 2 in the same way as the strut joining piece 75 hereinbefore described.

[0259] In the box strut arrangement, a horizontal joining piece 88 is attached to each strainer post 2. The ends 80 of the strut 5 slot into the respective third cup-shaped depressions 763.

[0260] In some examples, the tensioned fencing 1 according to the present application may be interfaced with various wooden components. These wooden components may be attached to the posts 2, 3 via box joining pieces, described hereinafter. Wooden components may be included in the tensioned fencing 1 to fill a small / awkward gap at the end of the fencing 1.

[0261] Referring now to Figure 49, a variation of the tensioned fencing 1, 100 is shown in which wooden post-and-rail fencing 89 is integrated with the strainer and intermediate posts 2, 3. The wooden post-and-rail fencing 89 bridges the small gap between the end strainer post 2 and a tree.

[0262] A wooden post 90 of the post-and-rail fencing 89 is attached to the strainer post 2 via a pair of box joining pieces 93. Referring also to Figures 50 and 51, two variations of the box joining piece 93 are shown in perspective view. The box joining piece 93 is the same as the strut joining piece 75 but comprises a block piece 94 instead of the first cup-shaped depression 761. The box joining piece 93 is attached to the posts 2, 3 using the post cuffs 77 as hereinbefore described.The block piece 94 includes a face 95 which faces horizontally outwards. As seen in a comparison between Figures 49 and 50, the face 95 may have different square dimensions depending on use requirements. The wooden component(s) may be attached to the face 95, for example by being nailed. The strut joining piece 75, post cuff 77, base piece 83, horizontal joining piece 88, and box joining piece 93 may each be formed of plastic. In some examples, the cup-shaped depressions 76 may be formed of plastic or aluminium.

[0263] The strut 5 will now be described in more detail with reference to Figure 52, which shows the section of the strut 5 which includes the second end 802. In some examples, each end 80 of the strut 5 comprises an end piece 96. The end piece 96 comprises a sleeve 97, which slots into the tubular body 98 of the strut 5, and a rounded cap 99 appending the sleeve 97. Once the sleeve 97 is fully inserted into the tubular body 98, the rounded cap 99 forms the rounded tip of the end 80 of the strut 5.

[0264] In some cases, the length of the strut 5 may need adjusting. In which case, one or more spacer pieces 101 may be provided, for example of length 5 mm, 10 mm, or 20 mm. These spacer pieces 101 are dimensioned to slide onto the end of the sleeve 97 until they contact the rounded cap 99. After the one or more spacer pieces 101 have been slotted onto the sleeve 97, the end piece 96 is inserted into the tubular body 98. The tubular body 98, rounded cap 99, and spacer piece(s) 101 have the same outer diameter.

[0265] The spacer pieces 101 allow the strut length to be increased in 5 mm increments up to 50 mm at each end 80. This provides a maximum increase of 100 mm overall. The requirement to adjust the strut length may arise when two or more struts 5 are being installed together using the same post cuffs 77. Figure 52 shows a 5 mm spacer piece 101 and a 10 mm spacer piece 101 being slotted onto the sleeve 97.

[0266] The tubular body 98 of the strut may be formed of metal, such as galvanised steel. The end piece 96 and the spacer piece(s) 101 may be formed of metal, such as galvanised steel or aluminium. Examples of suitable plastics which may be used for the components of the tensioned fencing 1 and posts 2,3 described herein include polyethylene, polypropylene, acrylonitrile butadiene styrene, and acrylonitrile styrene acrylate.

[0267] Method of installationReferring now to Figure 53, a process flow diagram is shown which outlines an example method of installing the posts 2, 3 and tensioned fencing 1 according to the present application. It should be appreciated that installation of tensioned fencing 1 typically involves installing a plurality of both strainer and intermediate posts 2, 3. The method of installing the intermediate post 3 will now be described.

[0268] Firstly, the intermediate base part 6, 62 is inserted into the ground (step SI). In preferred examples, an intermediate driving tool 63, 632 is inserted into the intermediate base part 62 and applies a driving force downwards (i.e. in the direction of post installation) for ground insertion.

[0269] The driving force of the intermediate driving tool 632 may be supplied by post-driving equipment.

[0270] The intermediate top part 7, 72 is then inserted into the intermediate base part 62 and aligned axially to the desired orientation. At this point, the insertable region of the intermediate top part 72 is not fully inserted into the intermediate base part 62.

[0271] The intermediate top part 72 is then pushed further into the intermediate base part 62 until the intermediate interlocking mechanism is fully engaged. The intermediate top part 72 and the intermediate base part 62 are thus removably interlocked. At this point, the insertable region of the intermediate top part 72 is fully inserted into the intermediate base part 62 (step S2).

[0272] The strainer post 2 is installed in a similar way to the intermediate post 3, as will now be explained.

[0273] Firstly, the strainer base part 6, 61 is inserted into the ground (step SI), for example by using the strainer driving tool 63, 631.

[0274] The inner tube 20 is then inserted into the strainer base part 61 (step not shown in Figure 53). The inner tube 20 does not require axial orientation before being fully inserted.

[0275] Next, the strainer top part 7, 71 is slotted over the inner tube 20 whilst being inserted into the strainer base part 61 and aligned axially to the desired orientation. At this point, the insertable region of the strainer top part 71 is not fully inserted into the strainer base part 61.The strainer top part 71 is then pushed further into the strainer base part 61 until the strainer interlocking mechanism is fully engaged. The strainer top part 71 and the strainer base part 61 are thus removably interlocked. At this point, the insertable region of the strainer top part 71 is fully inserted into the strainer base part 61 (step S2).

[0276] Once the strainer and intermediate posts 2, 3 are installed in the ground, other components of the tensioned fencing 1 may be installed.

[0277] For example, various supporting structures may be installed to support the strainer post(s) 2 (step S3). Suitable supporting structures include the angled and box strut arrangements hereinbefore described.

[0278] Before, after, or during step S3, the wire netting 4 may be attached to the top parts 7 (step S4), for example using the staple attachment means hereinbefore described.

[0279] Advantages

[0280] The posts 2, 3 hereinbefore described according to the present application have several advantages over conventional posts for tensioned fencing, some of which will now be discussed.

[0281] Firstly, both the strainer and intermediate posts 2, 3 are more cost effective compared to known metal posts. The strainer and intermediate posts 2, 3 have a multicomponent design (having base parts 6, top parts 7, etc.), which means the posts 2, 3 have a reinforced / strengthened design only where needed. For example, plastic may be used for parts where bulk is the most important requirement, and galvanised steel may be used for parts requiring additional strength. This means that, overall, the strainer and intermediate posts 2, 3 require less costly material than one-piece steel posts. Furthermore, their individual components / parts are easier and cheaper to manufacture and transport, and typically just clip together.

[0282] Secondly, both the strainer and intermediate posts 2, 3 exhibit better performance and versatility than known metal posts.

[0283] For example, the strainer and intermediate base parts 61, 62 both provide a large surface area directly contacting underground. This can help make the posts 2, 3 resistant to uprooting, spinning, and ploughing, which is particularly advantageous insoft ground conditions. The base parts 61, 62 may be further enlarged with add-on plastic components, if necessary. The improved foundation of the strainer post 2 means that the struts 5 are shorter than for conventional steel strainer posts.

[0284] Moreover, the struts 5 may be dispensed with when strainer posts 2 are used as stronger versions of intermediate-type posts, as may be necessary from time-to-time.

[0285] Referring to examples in which the staple attachment means are used: the strainer and intermediate posts 2, 3 are not pre-notched. Instead, they include a plurality of holes 47, each hole 47 suitable for insertion of the staple and locking pieces 46, 48. Thus, the posts 2, 3 have improved installation flexibility; they are universally compatible with any configuration of fence line wire spacing. What's more, the wire strands 45 can be easily attached to the posts 2, 3 without the need for drilling or bespoke tools in the field.

[0286] The strainer and intermediate posts 2, 3 have additional advantages. For example, the posts 2, 3 are consistent with current installation equipment and working practices and would integrate efficiently with subsequently installed wooden post-and-rail fencing. Also, the components / parts of the posts 2, 3 are lightweight and short (compared to conventional posts), making the design of the posts 2, 3 more ergonomic.

[0287] The strainer and intermediate posts 2, 3 are also environmentally friendly. For example, there is the potential to use recycled plastic for the plastic components of the posts 2, 3. Furthermore, the posts 2, 3 can be disassembled, allowing for certain parts / components of the posts 2, 3 to be reused. The staple attachment means also provides the environmental benefit of only using as many staple and locking pieces 46, 48 as strictly required.

[0288] Additional post examples

[0289] Additional examples of the previously described posts 2, 3 according to the present application (herein "counterpart posts") will now be described, along with additional aspects of the tensioned fencing 1. The additional example posts 2, 3 are shown in Figures 54 and 55 as part of the tensioned fencing 1 according to the present application.

[0290] These additional examples posts, which will henceforth be referred to as alternative posts, include an alternative strainer post 200 and an alternative intermediate post 300.The alternative strainer post 200 and the alternative intermediate post 300 differ in certain aspects to their counterpart strainer post 2 and counterpart intermediate post 3 hereinbefore described. These differences will be outlined hereinbelow. Wherein certain aspects or features of the alternative posts 200, 300 are not indicated as differing from their counterpart posts 2, 3, these aspects or features may nevertheless differ or - in some examples - be the same as the counterpart posts 2, 3.

[0291] The tensioned fencing 1 according to the present application may include a combination of alternative posts 200, 300 and counterpart posts 2, 3. In other examples, the tensioned fencing 1 may not comprise any counterpart posts 2, 3.

[0292] A further post for tensioned fencing according to the present application will be hereinafter described: a robust intermediate post 400. Preferably, the robust intermediate post 400 is used in combination with the alternative posts 200, 300 in the tensioned fencing.

[0293] Referring specifically to Figure 54, an example section of tensioned fencing 1 which includes the alternative posts 200, 300 and the robust intermediate post 400 according to the present application is shown in perspective view. Merely for ease of illustration, Figure 54 shows a single alternative strainer post 200 defining a corner of the tensioned fencing 1, which is positioned along the fence line between an alternative intermediate post 300 and a robust intermediate post 400. Wire netting 4 is stretched therebetween.

[0294] The wire netting 4 may be attached to the alternative intermediate posts 300 via conventional staples, or via other means such as bespoke staples. Example attachment means will be described in more detail hereinafter. Preferably, the wire netting 4 may simply be stretched across the surface of the alternative strainer posts 200, rather than attached. For example, the alternative strainer post 200 may be positioned in the tensioned fencing 1 to define a corner; in which case, the wire netting 4 is held in place by the force applied by this positioning.

[0295] The alternative strainer posts 200 are preferably supported by one or more alternative struts 500, angled with respect to the direction of fence installation. Examples of appropriate alternative struts 500 will be described hereinafter; as will be appreciated, the alternative struts 500 differ in several aspects to their counterpart struts 5hereinbefore described. Merely by way of example, Figure 54 shows two alternative struts 500 supporting the single alternative strainer post 200.

[0296] Each alternative strainer post 200 and each alternative intermediate post 300 comprises an alternative base part 600 configured for ground insertion. This means that, after installation of the posts 200, 300, each alternative base part 600 is embedded within the ground such that only the top of the alternative base part 600 is visible. As for the counterpart posts 2, 3, the alternative base part 600 may differ in certain aspects for each type of alternative post 200, 300 and the robust intermediate post 400.

[0297] For simplicity, the ground has also been omitted from Figure 54. However, Figure 55 shows a perspective view of the example tensioned fencing 1 as it would be seen in the environment after installation. In Figure 55, all alternative base parts 600 are obscured from view by the ground.

[0298] Each alternative strainer post 200 and each alternative intermediate post 300 further comprises an alternative top part 700 to which the wire netting 4 is attached, placed against, or wrapped around. During installation of a given post 200, 300, the alternative top part 700 is inserted into the alternative base part 600 (which has been embedded into the ground) such that a region (not shown) of the alternative top part 700 (herein referred to as "insertable region") is obscured by the alternative base part 600. As for the counterpart posts 2, 3, the alternative top part 700 may differ in certain aspects for each type of alternative post 200, 300.

[0299] Alternative strainer post 200

[0300] Referring now to Figure 56 and 57, the alternative strainer post 200 will now be described in greater detail.

[0301] As hereinbefore described, the strainer post 2 preferably comprises three major parts: the strainer base part 61 (Figure 9), the inner tube 20 (Figure 8), and the strainer top part 71 (Figure 10). A key difference between the Stainer post 2 and the alternative post 200 is the omission of the inner tube 20 or an equivalent part. In other words, the alternative strainer post 200 comprises two major parts: an alternative strainer base part 600, 6001 and an alternative strainer top part 700, 7001. Thus, the alternative strainer post 200 has a simplified design compared to its counterpart strainer post 2.The alternative strainer base part 6001 and the alternative strainer top part 7001 have similar functions and arrangements to their counterparts ( / .e. the strainer base part 61 and the strainer top part 71) hereinbefore described.

[0302] The alternative strainer top part 7001 is partially insertable into the alternative strainer base part 6001. After being inserted, a section of the alternative strainer top part 7001 is exposed. This configuration is shown in perspective view in Figure 56. In Figure 57, a cross-sectional view of the same configuration is shown; the insertable region of the alternative strainer top part 7001 is encompassed by the alternative strainer base part 6001 and extends only along a portion of its length.

[0303] The non-insertable region of the alternative strainer top part 7001 may have a length, Itp, from 1,000 mm to 1,200 mm, for example 1,100 mm. In other words, the alternative strainer post 200 may extend at a height of 1,100 mm from the ground during use. Other heights of the strainer post 200 are possible, depending on its use. The alternative strainer base part 6001 may have length from 1,000mm to 1,400mm, for example 1,300 mm.

[0304] An interlocking mechanism secures the alternative strainer base part 6001 and the alternative strainer top part 7001 after insertion. This mechanism will be described hereinafter.

[0305] Referring also to Figure 58, a perspective view of the alternative strainer top part 7001 is shown, along with a perspective view of a sub-section of the part 7001.

[0306] The alternative strainer top part 7001 is a tube or has a substantially tubular shape. In some examples, the alternative strainer top part 7001 is a galvanised steel tube. In some examples, the outer diameter, dtp, of the alternative strainer top part 7001 may be from 87 mm to 90 mm, for example 88.9 mm. The tube thickness may be from 2 m to 4 mm, for example 3 mm. However, the alternative strainer top part 7001 may have any suitable dimensions according to its intended use.

[0307] In some examples, the alternative strainer top part 7001 is hollow (as shown in Figure 58). In other examples, an inner tube (not shown), for example formed of metal, and / or a plug or block of material may be provided in the alternative strainer top part 7001 over a proportion of its length. For example, the material may be formed of plastic, structural foam, or mortar sand. The inner tube and / or plug or block ofmaterial is for reinforcing the alternative strainer top part 7001. Thus, these parts may be formed on any material suitable for reinforcement.

[0308] As hereinbefore described, the alternative strainer posts 200 are preferably supported by one or more alternative struts 500. The alternative struts 500 may be secured to the alternative strainer posts 200 in any suitable way. In some examples, the non-insertable region of the alternative strainer posts 200 comprises at least one pair of holes 102 for securing the alternative struts 500 (herein "strut holes" 102).

[0309] Preferably, the alternative strainer post 200 comprises a plurality of pairs of strut holes 102, each hole 102 equally spaced around the tube circumference of the alternative strainer post 200; this is shown in Figure 58. Preferably, the pairs of strut holes 102 are offset from each other along the length of the alternative strainer posts 200. Each hole 102 within a pair is at the same height-to allow bolts (not shown) to be thread therethrough during attachment of the alternative strut 500. This will be described in more detail hereinafter.

[0310] The strut holes 102 may be positioned towards the top of the alternative strainer post 200. In an example where the alternative strainer post 200 extends at a height of 1,100 mm from the ground, the strut holes 102 may be at a height of approximately 600 mm from the ground. Some pairs will be slightly above or below this height.

[0311] There may be six strut holes 102 (three offset pairs), as shown in the example in Figure 58. Thus, in this example, the strut holes 102 are spaced apart by 60°. This configuration allows up to three bolts (not shown) to pass through the alternative strainer post 200 without clashing with each other. In other examples, there may be more than six strut holes 102, which may be positioned at different heights.

[0312] The alternative strut 500 which will be described hereinafter is configured to be attached to the alternative strainer post 200 via the strut holes 102. However, it should be appreciated that, in other examples, the alternative strut 500 may be attached by other means. Thus, the strut holes 102 may not be present. For example, struts may be attached to the alternative strainer post 200 using self-drilling screws.

[0313] The alternative strainer post 200 further comprises a plurality of base part holes 103. These holes 103 are positioned towards the bottom of the alternative strainer post 200, within its insertable region. The base part holes 103 are for interlocking thealternative strainer post 200 with the alternative strainer base part 6001, as will be described in more detail hereinafter.

[0314] The base part holes 103 may be rectangular or any other suitable shape. The dimensions of the holes 103 depend on the configuration of the interlocking mechanism. The holes 103 are positioned so as to align with corresponding interlocking parts (described hereinafter) of the strainer base part 6001. Preferably, the alternative strainer post 200 comprises four base part holes 103, as shown in Figure 58, which are equally spaced around the tube circumference.

[0315] The alternative strainer base part 6001 will now be described in more detail. Figure 59 shows the alternative strainer base part 6001 in perspective view.

[0316] The alternative strainer base part 6001 includes an alternative base part body 180 and an alternative base part cap 170, which differ in certain aspects to their counterparts ( / .e. the base part body 18 and the cap 17) hereinbefore described.

[0317] The alternative base part body 180 forms a majority of the alternative strainer base part 6001. Preferably, the alternative base part body 180 is formed of a single piece, rather than two pieces which are joined together. Thus, the manufacture of the alternative strainer base part 6001 can be simplified compared to the counterpart base part 61.

[0318] The alternative base part cap 170 is dimensioned to directly slot or fit onto the bottom of the alternative base part body 180 so as to form the tip of the alternative strainer base part 6001. Thus, the thrust ring 19 hereinbefore described is not present in the alternative strainer base part 6001

[0319] As with its counterpart, the alternative base part body 180 has an exterior shape of which may be designed according to the environmental conditions of the place of installation. In the example shown in Figure 59, the alternative base part body 180 includes four faces 104 arranged perpendicular to each other, each with an identical exterior shape. The faces 104 extend along the length of the alternative base part body 180. The faces 104 help prevent the alternative strainer post 200 from spinning in the ground.

[0320] Each face 104 comprises protrusions 105 which extend along the length of the alternative base part body 180. The protrusions 105 towards the centre of each face104 may be shallower than the one or more protrusions towards the edge of each face 104. In some examples, such as that shown in Figure 59, each face 104 comprises four protrusions 105 towards its centre. Each face 104 further includes a single protrusion 105 at each edge, which combines with the corresponding protrusion 105 on the adjoining face 104.

[0321] Thus, the alternative base part body 180 has an exterior shape which is uniform along its length and does not comprise the motifs 11 hereinbefore described. In at least this way, the alternative base part body 180 is simplified compared to its counterpart. At the same time, the protrusions 105 help to increase the surface area of the alternative strainer post 200 in contact with the ground, providing greater resistance to uprooting.

[0322] It should be appreciated that, in other examples, the alternative base part body 180 may have any suitable exterior shape. The dimension across the widest part of the alternative base part body 180 may be from 160 mm to 180 mm, for example 170 mm.

[0323] The alternative base part cap 170 tapers towards a central axis of the alternative strainer base part 6001 (wherein the axis is along its length). Preferably, the exterior shape of the alternative base part cap 170 corresponds to or follows that of the alternative base part body 180. Thus, as shown in Figure 59, the alternative base part cap 170 includes protrusions 105 similar to those hereinbefore described. In some examples, the alternative base part cap 170 is formed of plastic.

[0324] As with its counterpart, the alternative strainer base part 6001 includes an alternative first opening 910 at its top into which the alternative strainer top part 7001 is insertable. Preferably, the alternative base part cap 170 includes an alternative second opening 920 at the bottom of the alternative strainer base part 6001.

[0325] Referring now to Figures 60 and 61, the alternative strainer base part 6001 (and other alternative base parts 600 according to the present application) may be driven into the ground using an alternative driving tool 630 and post-driving equipment (not shown).

[0326] The driving tool 630 is inserted into the alternative base part 600 and applies a driving force for ground insertion. In examples where the alternative second opening 920 is present, the driving tool is dimensioned to project through the alternative secondopening 920; this is shown in Figure 61. This may help to avoid damage to the alternative base part 600 during installation by transferring a portion or most of the stresses of ground penetration to the driving tool.

[0327] The alternative driving tool 630 is for the alternative posts 200, 300 and robust intermediate post 400; it may differ in certain aspects to the driving tool 63 hereinbefore described. However, the alternative driving tool 630 functions in substantially the same way and has the same technical advantages as its counterpart. The alternative driving tool 630 is dimensioned so as to closely fit the interiors of the alternative posts 200, 300 and robust intermediate post 400. Thus, its dimensions may vary depending on which post 200, 300, 400 it is configured to install.

[0328] In some examples, the alternative base part cap 170 does not include the alternative second opening 920. In which case, the driving tool 630 may be enclosed within the alternative base part cap 170 during installation. In this way, the alternative base part cap 170 may take the form of a protective skin for the driving tool 630.

[0329] Referring now to Figures 62 and 63, other aspects of the alternative strainer base part 6001 will now be described.

[0330] The alternative strainer base part 6001 further includes an inner sleeve part 106 dimensioned to slot into the alternative strainer base part 6001 and sit entirely within this part 6001 during use. Thus, the outer dimensions of the inner sleeve part 106 closely follow the interior dimensions of the alternative strainer base part 6001. As will be hereinafter explained, the inner sleeve part 106 provides the interlocking mechanism of the alternative strainer post 200.

[0331] During installation of the alternative strainer base part 6001, the inner sleeve part 106 provides the interacting surface with the alternative driving tool 630. When the alternative strainer top part 7001 is inserted, the inner sleeve part 106 also provides the interacting surface with this part 7001. In this way, the inner sleeve part 106 helps to enhance the strength of the alternative strainer base part 6001; once fully installed, the alternative strainer post 200 has a cross-section comprising concentric layers of tubing: the alternative strainer top part 7001, the inner sleeve part 106, and the alternative base part body 180.A perspective view of the inner sleeve part 106 is shown in exploded form in Figure 62, along with perspective views of the alternative base part body 180 and alternative base part cap 170 hereinbefore described.

[0332] The inner sleeve part 106 includes a top inner tube 107, a middle inner tube 108, and a bottom inner tube 109. When fully assembled, the middle inner tube 108 is arranged between the top and bottom inner tubes 107, 109. These tubes 107, 108, 109 may be formed of plastic. The tubes 107, 108, 109 may be welded or fixed some other way to the alternative base part body 180.

[0333] The inner sleeve part 106 further includes an upper thrust ring 110 and a bottom thrust ring 111. The bottom thrust ring 111 is arranged between the middle inner tube 108 and the bottom inner tube 109. The upper thrust ring 110 contacts the bottom surface of the top inner tube 107. The top and bottom thrust rings 110, 111 may be formed of plastic or metal.

[0334] The inner sleeve part 106 further includes a plurality of interlocking pieces 112 which are configured to provide the interlocking mechanism between the alternative strainer top part 7001 and the strainer base part 6001. A section of each interlocking piece 112 (described hereinafter) projects towards the central axis of the strainer base part 6001; this section is inserted between the upper thrust ring 110 and the middle inner tube 108. As will be described hereinafter, each interlocking piece 112 is evenly spaced apart around the circumference of the inner sleeve part 106. Thus, in regions at this length along inner sleeve part 106 where the interlocking pieces 112 are not present, gaps 113 are formed.

[0335] All inner tubes 107, 108, 109 have the same outer diameter. The top and middle tube 107, 108 have the same inner diameter; the bottom inner tube 109 may have smaller inner diameter. This is because the top and middle inner tube 107, 108 are dimensioned to allow space for the alternative strainer top part 7001, while the bottom inner tube 109 is dimensioned to support the bottom thrust ring 111.

[0336] As hereinbefore explained, the outer dimensions of the inner sleeve part 106 closely follow the inner dimensions of the alternative strainer base part 6001.

[0337] A section of each interlocking piece 112 projects away from the central axis of the strainer base part 6001 and extends beyond the diameter of the inner tubes 107, 108, 109. Thus, the internal shape of the alternative strainer base part 6001 includes slots114 which extend away from its central axis. These slots are shown in Figure 63. Each slot 114 is dimensioned to receive a respective interlocking piece 112 - specifically the section which projects away front the central axis. Thus, the slots 114 are arranged to correspond to the position of the interlocking piece 112. In the example shown in Figure 63, there are four slots 114 evenly spaced apart for each of the four interlocking pieces 112 shown in Figure 62.

[0338] Referring also to Figures 64 to 66, the interlocking pieces 112 and corresponding interlocking mechanism will now be described in further detail.

[0339] Figure 64 shows a section view of the alternative base part body 180 and inserted inner sleeve part 106, with the central interior of the inner sleeve part exposed. Figure 65 shows the same view, but with the alternative strainer top part 7001 fully inserted within the inner sleeve part 106.

[0340] In the example shown in these figures, four interlocking pieces 112 are present -although only two are fully shown for simplicity. A further perspective view of one of the interlocking pieces 112 is shown in Figure 66.

[0341] The interlocking mechanism comprises two main sections: an inner interlocking section 115 and an outer interlocking section 116. The inner interlocking section 115 takes the form of a protrusion 1151 with a chamfered edge 1152 (Figure 66). This section 115 is the region of the interlocking piece 112 which projects towards the central axis of the strainer base part 6001 and is provided between the upper thrust ring 110 and the middle inner tube 108. The upper thrust ring 110 sits on the protrusion and the chamfered edge 1152 extends from the upper thrust ring 110 towards the central axis. The outer interlocking section 116 is the section which projects away front the central axis and sits within the slots 114 hereinbefore described.

[0342] As shown in Figures 64 and 65, the inner sleeve part 106 further includes a central inner tube 117 which is provided within and conforms to the middle inner tube 108. The central inner tube 117 sits on the bottom thrust ring 111 and extends along a majority of the length of the middle inner tube 108 (although not its entire length). Thus, when the alternative strainer top part 7001 is fully inserted into the alternative strainer base part 6001, the alternative strainer top part 7001 rests on top of the central inner tube 117. This is shown, for example, in Figure 57.The central inner tube 117 may help to strengthen the alternative strainer base part 6001. The central inner tube 117 may be formed of plastic.

[0343] Further strengthening may be provided by the middle inner tube 108 overlapping the alternative strainer top part 7001; this configuration is shown in Figure 57.

[0344] The outer interlocking section 116 extends along a portion of the outer surface of the top inner tube 107 and the middle inner tube 108. On the outer surface of the outer interlocking section 116 (i.e. furthest from the central axis), there is provided bendable mechanism which is configured to allow radial movement (from the central axis outwards) of the interlocking piece 112. Specifically, the bendable mechanism is configured to allow the interlocking piece 112 to regress radially as the alternative strainer top part 7001 is being pushed against it during insertion.

[0345] The bendable mechanism may take any suitable form. In the example shown in Figures 64 to 66, the bendable mechanism includes a pair of bendable, angled protrusions 118. These protrusions 118 are configured to flex or bend when under pressure. Furthermore, only these protrusions 118 of the interlocking piece 112 contact the outermost surface of the slot 114. Thus, when the alternative strainer top part 7001 is pushed against and past the inner interlocking section 115 during insertion, there is space for the interlocking piece 112 to move radially outwards. To allow for this, the protrusions 118 flex inwards (Figure 65).

[0346] The alternative strainer top part 7001 becomes fully engaged with the interlocking mechanism when the inner interlocking section 115 fully slots into the base part holes 103 (Figure 58). Once this occurs, the protrusions 118 have space to push radially outwards into their "standby" or "in-use" position. Once fully interlocked with the alternative strainer base part 6001, the alternative strainer top part 7001 is prevented from upwards and rotational movement. Downwards movement of the alternative strainer top part 7001 is limited by interaction with the central inner tube 117.

[0347] In some examples, the interlocking piece 112 takes the form of a plastic moulded piece 119 sandwiched between two galvanised steel side plates 120. The plastic moulded piece 119 forms part of the bendable mechanism hereinbefore described. The steel plates 120 form part of both the inner and outer interlocking sections 115, 116. This configuration is shown in Figure 66.Blocks 121 may be provided on the outer surface of the outer interlocking section 116 of the plastic moulded piece 119. These blocks 121 may be arranged to ensure that the steel plates 120 move in unison with the plastic moulded piece 119 when the protrusions 118 return to their "in-use" position.

[0348] The dimensions of the interlocking pieces 112 are determined by the need to i) withstand the various forces likely to impinge on the alternative strainer base part 6001 in supporting a strained wire fence, and ii) to spread those forces across a sufficiently large area of the other components of the alternative strainer base part 6001.

[0349] The interlocking mechanism hereinbefore described is configured such that, once interlocked the alternative strainer top part 7001 and alternative Stainer base part 6001 cannot be easily separated. In preferred examples, these parts 7001, 6001 would be separable only with force sufficient to break apart the alternative strainer base part 6001.

[0350] The alternative strut 500 will be described hereinafter.

[0351] Alternative intermediate post 300

[0352] Referring now to Figures 67 and 68, the alternative intermediate post 300 will now be described in greater detail.

[0353] As with its counterpart, the alternative intermediate post 300 comprises two major parts: an alternative intermediate base part 600, 6002 and an alternative intermediate top part 700, 7002. The alternative intermediate base part 6002 and the alternative intermediate top part 7002 have similar functions and arrangements to their counterparts (i.e. the intermediate base part 62 and the intermediate top part 72) hereinbefore described.

[0354] In a preferred example, the alternative intermediate post 300 is now a materially-composite post 300 including plastic in a majority of the alternative intermediate top part 7002. This is in contrast to its counterpart, in which the intermediate top part 72 comprises the bar 35 for securing the wire netting 4 thereto, which will be typically formed of metal. Thus, the alternative intermediate post 300 may be stronger than its counterpart intermediate post 3.Figure 67 shows a perspective view of the alternative intermediate post 300; Figure 68 shows a cross-sectional view of a sub-section of the alternative intermediate post 300.

[0355] The alternative intermediate top part 7002 is partially insertable into the alternative intermediate base part 6002. After being inserted, a section of the alternative intermediate top part 7002 is exposed. As shown in Figure 68, the insertable region of the alternative intermediate top part 7002 is encompassed by the alternative intermediate base part 6002 and extends only along a portion of its length.

[0356] Referring also to Figure 69 and 70, the alternative intermediate top part 7002 will now be described in greater detail.

[0357] The alternative intermediate top part 7002 includes a bar 122 for securing the wire netting 4 thereto and a sleeve 123 around the lower section of the bar 122, which is dimensioned to slot into the alternative intermediate base part 6002. The bar 122 may be fixed within the sleeve 123 by bolts (not shown).

[0358] The bar 122 includes a main body 124, which is preferably formed of plastic, and plates 125, 126 secured therebetween, preferably by bolts or via bonding. The plates 125, 126 are preferably formed of metal and each have different functions, as described hereinbefore. The bar 122 may have external dimensions of approximately 41mm x 41mm.

[0359] The main body 124 of the bar 122 may be a single piece or element. In other examples, the main body 124 may be composite, for example formed by a series of extrusions laminated together (not shown)

[0360] The bar 122 has a cross-section comprising sections of different outlines; this is shown in Figure 70. Figure 70 provides front and back ( / .e. opposite) perspective views of the top section of the bar 122. The cross-section is taken along the plane substantially perpendicular to the axis of installation; in other words, the plane is substantially parallel to the ground at the point of installation.

[0361] The non-linear cross-section includes a partially curved section. This partially curved section includes a substantially flat sub-section on which is provided one of the plates 125, namely a wire-securing plate 125. The wire-securing plate 125 extends along the length of the bar 122. The configuration of the wire-securing plate 125 depends on theattachments means for securing the wire netting 4. The wire securing plate 125 terminates just before the sleeve 123. In other examples, the wire-securing plate 125 may be omitted if it is not required for the attachments means.

[0362] The non-linear cross-section further includes an L-shaped or right-angled section opposite to the partially curved section. This L-shaped section is provided with the other plate 126, namely a reinforcing plate 126 in the form of an equal angle bar 126. The equal angle bar 126 extends along the length of the bar 122. In some examples, the dimensions of the cross-section of the equal angle bar 126 are 3mm x 25mm.

[0363] The equal angle bar 126 extends into the sleeve 123, for example by a distance from 100mm to 300mm, for example 200mm. The main body 124 itself extends into the sleeve 123 to a lesser extent, for example from 20mm to 40mm, for example 30mm. Thus, the bar 122 is preferably secured to the sleeve 123 via the equal angle bar 126, for example via bolts.

[0364] Referring also to Figures 71 to 72, the attachment means will now be described.

[0365] As hereinbefore described, the wire netting 4 may be attached or secured to the bar 122 via conventional staples; this is shown in Figure 71. In this example, the wire securing plate 125 comprises a single column of holes 127. A leg of a conventional staple 128 may be inserted into one of the holes 127. Both legs of the conventional staple 128 may be aligned with two selected holes 127, or the staple 128 may be angled either to the left or right of the wire securing plate 125 so that only one leg aligns with one of the holes 127. Both configurations are shown in Figure 71. This gives the user flexibility in the staple position; this is helpful in avoiding clashing with a fence knot or one of the bolts.

[0366] Figure 72 shows two perspective views of an example in which bespoke staples 129 are used for the attachment means. In this example, the wire-securing plate 125 comprises two columns of holes 127. Vertical channels 130 are present in the bar 122; each channel 130 aligns with a respective column of holes 127, allowing for insertion of the bespoke staples 129.

[0367] Reference is also made to Figure 73, which shows a perspective and cross-sectional view of the bespoke staple 129. Preferably, the bespoke staple 129 is formed of steel.The bespoke staple 129 includes a curved section 131. The curved section 131 forms a loop, through which the wire netting 4 may be threaded. The bespoke staple further includes a flat section 132 above the curved section 131, as well as upper and lower ends 133, 134. The upper end 133 may have a serrated edge, as shown in the perspective view in Figure 73. The upper and lower ends 133, 134 are threaded through the holes 127 and into the vertical channels 130 during installation, as will now be explained.

[0368] Referring to Figure 74, the lower end 134 is first threaded into one of the holes 127 at an angle with respect to the bar 122. Figure 74 shows perspective and cross-sectional views of this; the lower end 134 begins to penetrate one of the vertical channels 130.

[0369] As the bespoke staple 129 is angled towards the bar 122, the upper end 133 is threaded through a different hole 127 and into the corresponding vertical channel 130. Once fully inserted, the flat section 132 lies flush with the wire-securing plate 125 and the curved section 131 extends outwards to form a loop. This is shown in Figure 75, in both perspective and cross-sectional views. Figure 72 shows the wire netting 4 being threaded through the loop formed by the curved section 131.

[0370] The loop formed by the curved section 131 is towards the bottom of the bespoke staple 129 when in use. This can have several benefits; installation of the bespoke staple 129 is made easier by providing the flat section 132 at a position which is easier for hitting by a hammer. Furthermore, should the wire netting 4 exert an outwards force on the bespoke staple 129, the bulk of the reaction to this force is experienced by the curved section 131, which is securely locked in place by the lower end 134. Thus, the bespoke staple 129 is resistant to being dislodged. Furthermore, the bespoke staple 129 may be installed upside down (i.e. the curved section 131 being positioned about the flat section 132).

[0371] The dimensions of the attachment means may be adjusted dependent on the use and the components available. For example, the holes 127 may be spaced apart by 11 mm or a different distance. The different sections of the bespoke staple 129 may have any suitable dimensions. For example, the length of the upper end 133 and / or the flat section 132 may be increased.

[0372] Other aspects of the alternative intermediate top part 7002 will now be described.Figure 76 shows two perspective views of the alternative intermediate top part 7002, with each view focussing on the sleeve 123. The sleeve 123 is configured to interlock with the alternative intermediate base part 6002, as will be described hereinafter.

[0373] The upper section of the sleeve 123 includes a plurality of annular protrusions 135. In the present example, there are four annular protrusions 135. In other examples, there may be a different number.

[0374] The lower section of the sleeve 123, which may form a majority of its external shape, includes a plurality of vertical protrusions 136. In combination, the plurality of vertical protrusions 136 form a corrugated shape which, as will be hereinafter described, align with corresponding recesses (not shown) within the alternative intermediate base part 6002.

[0375] The vertical protrusions 136 are configured to provide an orientation mechanism. Before insertion, the alternative intermediate top part 7002 can be rotated with respect to the alternative intermediate base part 6002. Provided that the vertical protrusions 136 align with the recesses (not shown) in the base part 6002, the alternative intermediate top part 7002 can be inserted. This allows for a high degree of freedom in the orientation of the alternative intermediate top part 7002.

[0376] The different rotational positions the alternative intermediate top part 7002 can take is defined by the plurality of matching vertical protrusions 136 and recesses (not shown). In some examples, the alternative intermediate top part 7002 may be rotationally positioned with respect to the alternative intermediate base part 6002 in increments of 9°.

[0377] In some examples, the sleeve 123 is formed by two halves bolted or otherwise secured together.

[0378] Referring also to Figure 77, a cutaway view of the alternative intermediate top part 7002 is shown, exposing the section of the bar 122 enclosed by the sleeve 123. As hereinbefore explained, the equal angle bar 126 extends into a majority of the sleeve 123. In the present example, the equal angle bar 126 is secured by bolts 137. The main body 124 extends into the sleeve 123 to a lesser extent than the equal angle bar 126.The alternative intermediate base part 6002 will now be described in greater detail. Figure 78 shows a perspective view of the alternative intermediate base part 6002.

[0379] As hereinbefore described, its counterpart intermediate base part 62 is preferably a multi-component design which comprises the cap 17, base body part 18, and the thrust ring 19. By contrast, the alternative intermediate base part 6002 has a simplified design which dispenses with the aforementioned components. However, the alternative intermediate base part 6002 is still sufficiently robust for installation and resistant to upwards forces which will be experienced during use.

[0380] The alternative intermediate base part 6002 comprises a main tubular body 138 which forms a majority of the part 6002. Preferably, the main tubular body 138 is formed of a single piece or element.

[0381] The alternative intermediate base part 6002 may further comprise a top ring 139, preferably formed of steel, which encloses the uppermost section 140 of the main tubular body 138. The top ring 139 is configured to support / reinforce the uppermost section of the main tubular body 138, for example during installation to help prevent breakage to the main tubular body 138. The uppermost section 140 further includes the alternative first opening 910 (herein described) into which the alternative intermediate top part 7002 is insertable.

[0382] The bottommost section 141 of the main tubular body 138 has a chamfered profile. In some examples, such as that shown in Figure 78, the exterior shape of the bottommost section 141 is substantially flat. However, the bottommost section 141 may have any suitable exterior shape.

[0383] The bottommost section 141 of the main tubular body 138 also includes the alternative second opening 920 (herein described). Referring also to Figure 79, the alternative intermediate base part 6002 may be driven into the ground using the alternative driving tool 630 and post-driving equipment. During installation, the alternative driving tool 630 projects through the alternative second opening 920. Thus, when fully inserted, the tip of the alternative driving tool 630 and the chamfered profile of the bottommost section 141 - in combination - form a central pointed end. The way in which the alternative intermediate base part 6002 and the alternative driving tool 630 are dimensioned and configured to engage with each other during installation may help prevent damage to the alternative intermediate base part 6002.The section of the main tubular body 138 between the uppermost and bottommost sections 140, 141 is herein referred to as the middle section 142. The middle section 142 forms a majority of the alternative intermediate base part 6002.

[0384] The middle section 142 has an exterior shape which is uniform along its length and does not comprise the motifs 11 hereinbefore described. In at least this way, the alternative intermediate base part 6002 is simplified compared to its counterpart. Nevertheless, the exterior shape of the middle section 142 still provides sufficient resistance to uprooting.

[0385] In the example shown in Figure 78, the exterior shape of the middle section 142 includes a plurality of parallel protrusions 143 which are evenly spaced apart around the circumference of the main tubular body 138. The protrusions 143 extends along the whole length of the middle section 142. In examples wherein the top ring 139 is not present, this exterior shape may extend to the uppermost section 140.

[0386] In some examples, the alternative intermediate base part 6002 may have external dimensions of 600mm x 69mm.

[0387] Referring also to Figure 80, the interior shape of the alternative intermediate base part 6002 will now be described. Figure 80 shows a perspective view of the alternative intermediate base part 6002 and a cut-out view exposing the interior of the part 6002.

[0388] The interior shape of the uppermost section 140 includes a plurality of annular recesses 144. The annular recesses 144 are positioned to correspond to the annular protrusions 135 of the sleeve 123 hereinbefore described. When the alternative intermediate top part 7002 is inserted, the annular protrusions 135 initially distort and then slot into the annular recesses 144, thereby providing the interlocking mechanism between the alternative intermediate top part 7002 and the alternative intermediate base part 6002. In this way, the interlocking mechanism is a "push-fit" interlocking mechanism.

[0389] This interlocking mechanism is configured such that, once interlocked, the alternative intermediate top part 7002 and alternative intermediate base part 6002 cannot be easily separated. In preferred examples, these parts 7002, 6002 would be separable only with force sufficient to rip apart and destroy the annular protrusions 135 and the annular recesses 144.The number of annular recesses 144 should preferably match with the number of annular protrusions 135. In some examples, such as that shown in Figure 80, there may be four annular recesses 144.

[0390] The interior shape of the middle section includes a plurality of vertical recesses 145. The vertical recesses 145 are positioned to correspond to the vertical protrusions 136 of the sleeve 123 hereinbefore described. When the alternative intermediate top part 7002 is inserted, the vertical protrusions 136 slot into the vertical recesses 145.

[0391] Before final engagement, the alternative intermediate top part 7002 may be rotated to any angular position with respect to the alternative intermediate base part 6002 provided that the vertical protrusions 136 and the vertical recesses 145 align.

[0392] Figure 81 shows a cross-section view of a subsection of the alternative intermediate post once the base part 6002 and the top part 7002 are fully interlocked. The cross-sectional view plane in this figure is along the direction of installation. As shown, each annular protrusions 135 is fully engaged with a respective angular recess 144.

[0393] Likewise, Figure 82 shows a cross-section view of the alternative intermediate post once the base part 6002 and the top part 7002 are fully interlocked. However, this cross-sectional view plane is perpendicular to the direction of installation. As shown, a majority of vertical protrusions 136 are engaged with respective vertical recesses 145. The specific vertical protrusions 136 and vertical recesses 145 which are interlocking depend on the angular position of the alternative intermediate top part 7002 with respect to the alternative intermediate base part 6002.

[0394] Robust intermediate post 400

[0395] The robust intermediate post 400 includes aspects / features of both the alternative strainer post 200 and alternative intermediate post 300, although its dimensions may differ.

[0396] The robust intermediate post 400 is configured for use as a stronger intermediate post than the alternative intermediate post 300. The robust intermediate post 400 may be installed in environments where traditional wooden Stainers would be installed and where it is important to secure wire netting 4 to the post. For example, the robust intermediate posts 400 may be installed in areas where periodic reinforcement is required or where there are small deflections in the fence line.Referring now to Figure 83, a perspective view of the robust intermediate post 400 is shown.

[0397] As with the alternative posts 200, 300, the robust intermediate post 400 includes two main parts: a robust top part 146 and a robust base part 147.

[0398] Referring also to Figure 84, a perspective view of the robust base part 147 is shown, in which the alternative driving tool 630 is fully inserted. The robust base part 147 may be installed into the ground by the alternative driving tool 630 in the same way as hereinbefore described for the alternative posts 200, 300.

[0399] The robust top part 146 may be substantially the same as the alternative intermediate top part 7002 hereinbefore described. Differences between the robust top part 146 and the alternative intermediate top part 7002 will now be described. Reference is made to Figure 85, which shows the robust top part 146 in perspective view.

[0400] The reinforcing plate 148 of the robust top part 146 has a larger cross-sectional dimensions to the reinforcing plate 126 of the intermediate top part 7002. For example, the present reinforcing plate 148 may have dimensions of 5mm x 30mm. Furthermore, the reinforcing plate 148 extends further into the sleeve 149 of the robust top part 146 compared to the intermediate top part 7002. For example, the reinforcing plate 148 may extend 250 mm into the sleeve 149.

[0401] The bar 150 of the robust top part 146 differs in certain aspects to the bar 122 of the alternative intermediate top part 7002. For example, the cross section of the bar 150 may be larger than the bar 122 hereinbefore described. Furthermore, the outline of the cross-section may be different. For example, the partially curved section of the cross-section outline may have sides 151 which are shaped as arcs of the same circle. In one example, the diameter of this circle is 64 mm, but the diameter may be different in other examples. A top view of the bar 150 showing this cross-section is shown in Figure 86.

[0402] As will be hereinafter described, struts (not shown) may be attached to the robust top part 146. Therefore, the bar 150 of the robust top part 146 may include a strut hole 102 extending through the width of the bar 150. For a robust intermediate post 400 with above-ground height of 1,100mm, this hole 102 may be situated at approximately 600mm from ground level.The sleeve 149 of the robust top part 146 will now be described in greater detail. Figure 87 shows a perspective view of the sleeve 149 and the Figure 88 shows an exploded view of the same, which exposes the interior of the sleeve 149.

[0403] The sleeve 149 of the robust top part 146 is similar to the sleeve 123 of the alternative intermediate top part 7002. However, certain aspects differ due to the requirement for a stronger interlocking mechanism between the robust top part 146 and the robust base part 147.

[0404] The sleeve 149 is formed in two halves 1491, 1492, which may be bolted together. The upper section of the sleeve 149 includes a plurality of vertical protrusions 152, which are functionally the same as the vertical protrusions 136 hereinbefore described. Further, these vertical protrusions 152 are configured to provide the same orientation mechanism as hereinbefore described for the alternative intermediate top part 7002.

[0405] The lower section of the sleeve 149, which may form a majority of its external shape, is different in configuration. This lower section includes an annular trench 153 which is configured to engage with the robust base part 147 to provide the interlocking mechanism; this will be described in greater detail hereinafter.

[0406] Referring also to Figure 89, a pair of wedges 154, preferably formed of galvanised steel, are shown in perspective view. The wedges 154 are slotted into the sleeve 149 along the plane perpendicular to the direction of installation. Each wedge 149 includes a plurality of prongs 155 which are arranged to penetrate the width of the sleeve 149 once inserted. The halves 1491, 1492 and reinforcing plate 148 hereinbefore described include slots 156 for receiving the prongs 155. These slots 156 are slightly smaller than the prongs 155; this creates an interference fit which secures the wedges 154 in place.

[0407] The wedges 154 may help to spread the load experienced by the robust top part 146 during day-to-day operation of the post 400.

[0408] The robust base part 147, and its corresponding interlocking mechanism, will now be described in greater detail with reference to Figure 90.

[0409] The robust base part 147 comprises a robust base part body 157 and a robust base part cap 158, which are substantially the same as the alternative base part body 180and the alternative base part cap 170 hereinbefore described. These components are shown in perspective view in Figure 62.

[0410] Figure 90 further shows an exploded view of an inner sleeve part 159 of the robust base part 147. The inner sleeve part 159 is similar in design and function to the inner sleeve part 106 of the alternative strainer base part 6001 hereinbefore described. However, there are certain differences, which will now be outlined.

[0411] The inner sleeve part 159 includes a top inner tube 160, a middle inner tube 161, and a bottom inner tube 162, as well as an upper thrust ring 163 and a bottom thrust ring 164. The tubes 160, 161, 162 and rings 163, 164 are similar to the tubes 107, 108, 109 and rings 110, 111 of the alternative strainer base part 6001 hereinbefore described. However, in some examples, the bottom thrust ring 164 may not be present. Furthermore, a part equivalent to the central inner tube 117 is not present in the robust base part 147.

[0412] Instead, the middle inner tube 161 is shortened compared to its counterpart middle inner tube 160. The robust top part 146, once inserted into the robust base part 147, is arranged to rest on the bottom thrust ring 164, rather than a part equivalent to the central inner tube 117. This is shown in Figure 91. If the bottom thrust ring 164 is not present, then the robust top part 146 is arranged to sit on the top of the bottom inner tube 162.

[0413] Another difference is found in the top inner tube 160. Unlike its counterpart tube 107, the top inner tube 160 includes vertical recesses 165 used as part of the orientation mechanism. When the robust top part 146 is inserted into the robust base part 147, the vertical protrusions 152 hereinbefore described are arranged to engage or interlock with the vertical recesses 165 of the top inner tube 160.

[0414] Referring also to Figure 91, a cross-sectional view of the robust base part body 157 and the inner sleeve part 159 is shown, with the central interior of the inner sleeve part 159 exposed. Figure 91 also shows the same view, but with the robust top part 146 fully inserted within the inner sleeve part 159.

[0415] The inner sleeve part 159 further includes a plurality of interlocking pieces 166. Two perspective views of one of the interlocking pieces 166 is shown in Figure 92.These interlocking pieces 166 are arranged within the inner sleeve part 159 in the same way as the hereinbefore described for the interlocking pieces 112. Furthermore, the present interlocking pieces 166 function according to the same principle as the interlocking pieces 112 of the alternative strainer base part 6001. However, there are certain structural differences, which will now be described.

[0416] Each interlocking piece 166 comprises an inner interlocking section 167 and an outer interlocking section 168. The inner interlocking section 167 takes the form of a curved protrusion 169, wherein the direction of curvature is perpendicular to the direction of installation. When the robust top part 146 is inserted and fully interlocks with the robust base part 147, the curved protrusion 169 is in contact with the annular trench 153 hereinbefore described.

[0417] As with its counterpart, the outer surface of the outer interlocking section 168 is provided a bendable mechanism which is configured to allow radial movement of the interlocking piece 166. This bendable mechanism is simplified compared to the bendable mechanism of the alternative strainer post 200. The present bendable mechanism includes a single bendable, angled protrusion 171 which is configured to flex or bend when under pressure.

[0418] As with the bendable mechanism hereinbefore described, the bendable, angled protrusion 171 flexes inwards as the robust top part 146 is inserted, which allows the interlocking piece 166 to move outwards. The movement of the interlocking piece 166 allows the robust top part 146 to be fully inserted into the robust base part 147. At which point, the angled protrusion 171 has space to flex back into its "stand-by" position and the annular trench 153 and the curved protrusion 169 are fully engaged / interlocking.

[0419] Once fully interlocked with the robust base part 147, the robust top part 146 is prevented from upwards and rotational movement. Furthermore, the interlocking mechanism hereinbefore described is configured such that, once interlocked the robust top part 146 and the robust base part 147 cannot be easily separated. In preferred examples, these parts 146, 147 would be separable only with force sufficient to break apart the robust base part 147.

[0420] Other suitable bendable mechanisms may be used, for examples those which apply the same principle of function ( / .e. use of bendable protrusions) but have a different structure.In preferred examples, the interlocking piece 166 takes the form of a single plastic moulding. The overall length of the robust base part 147 may be from 800 mm to 1,000 mm, for example 900mm. Other lengths may be used.

[0421] Alternative driving tool

[0422] As hereinbefore described, the alternative driving tool 630 may be used to drive the alternative base parts 600, 6001, 6002 and the robust base part 147 into the ground in the same way as hereinbefore describe for the counterpart posts 2, 3.

[0423] The alternative driving tool 630 may vary in dimensions depending on which type of base part 6001, 6002, 147 is to be driven into the ground.

[0424] As with its counterpart driving tool 63, the alternative driving tool includes a collar or flange 172 which is positioned so as to contact the top of the base part 6001, 6002, 147 during insertion. In this way, the collar 166 applies a portion of the driving force to the top of the base part 6001, 6002, 147.

[0425] In some examples, there may be further interaction between the alternative driving tool 630 and the base part 6001, 6002, 147. For example, the alternative driving tool 630 may include an additional collar or flange 173 (such as in Figure 60) which applies a portion of the driving force to the top of the central inner tube 11 (Figure 64) or the bottom thrust ring 164 (Figure 90). The alternative driving tool 630 may apply a portion of the driving force to a different, discrete subsection of the base part 600, 6001, 6002, 147.

[0426] Alternative strut 500

[0427] As hereinbefore explained, struts 500 may be used to support both the alternative strainer post 200 and the robust intermediate post 400. Examples of such alternative struts 500 will now be described. The configuration of the alternative struts 500 may differ depending on which type of post 200, 400 is being supported.

[0428] Referring now to Figure 93, the alternative strainer post 200 and a single alternative strut 500, 5001 suitable for this post 200 are shown in perspective view.

[0429] The alternative strut 5001 comprises a strut bar 174 which, in use, is secured to the alternative strainer post 200 via top strut piece 175. At the ground end, the strut bar 174 is inserted into a strut base 177 via a bottom strut piece 176 this is shown inFigure 94. In some examples, such as that shown in Figure 93, the bottom strut piece 176 is bolted to the strut bar 174 and has a freedom of movement to pivot around this bolt.

[0430] In some examples, such as that shown in Figure 94, the strut base 177 includes a plastic moulding 178 which houses a galvanised steel back plate 179. The bottom strut piece 176 slots into a matching recess in the plastic moulding 178 and abuts the steel back plate 179, which acts to spread the load of the thrust experienced by the strut 5001 as it supports the alternative strainer post 200 in day-to-day use. The plastic moulding 178 is also dimensioned to receive a wooden stake 181. The wooden stake 181, in use, is inserted into the ground so as to brace the strut base 177.

[0431] In other examples, the strut base 177 may be braced using other means. For example, a base part 6, 600 (for example, filled with gravel) hereinbefore described may be used instead of the wooden stake 181. In other examples, other objects, such a large stone or a lateral length of wood embedded in the ground may be used to prevent the strut base 177 from moving in use.

[0432] Any suitable top strut piece 175 may be used. Figure 95 shows a first example top strut piece 175, 1751 in perspective view and Figure 96 shows an alternative, second example top strut piece 175, 1752 in perspective view.

[0433] The first example top strut piece 175, 1751 may be used in examples where the top strut piece 175 is screwed into the alternative strainer top part 7001 using self-drilling screws. The second example top strut piece 1752 may be used in examples where the strut holes 102 have been pre-drilled into the alternative strainer top part 7002.

[0434] Both example top strut pieces 1751, 1752 comprise a curved back piece 182, along with two arms 183 which extend from the curved back piece 182. The curvature of the curved back piece 182 aligns with the circumference of the alternative strainer top part 7001. The arms 183 have matching holes 184 through which a bolt 185 passes. In use, the bolt 185 also passes through a pair of holes (not shown) at the end of the strut bar 174, such that the bolt 185 acts as the pin of the point-jointed connection of the alternative strut 5001 to the alternative strainer post 200. This is shown in Figure 97.

[0435] The second example top strut piece 1752 further includes a slot 186 in the curved back piece 184. This slot 186 allows the first example top strut piece 1752 to bepartially rotated relative to the strut hole 102 in the alternative strainer post 200. This provides flexibility for the strut 5001 to be arranged in the direction desired by the installer. Furthermore, the second example top strut piece 1752 can be flipped horizontally such that the slot 186 allows adjustment in either left or right direction (relative to the post 200).

[0436] Figure 93 shows a single alternative strut 5001 attached to the alternative strainer post 200. However, two or more struts 5001 may be attached to the post 200. For box strainer arrangements, two top strut pieces 175, and the strut bar 174 therebetween, are used.

[0437] The strut bar 174 and the strut top piece 175 may be formed of galvanised steel. The alternative strut 5001 and its constituent components may have any suitable dimension. For example, the strut bar 174 may have an outer diameter of 45mm to 50mm, for example 48.3mm, with a thickness of 2mm to 4mm, for example 3mm. For a alternative strainer top part 7001 of 1100mm above ground height, the strut bar 174 may be 1800mm long or other lengths as appropriate.

[0438] Referring now to Figure 98, the robust intermediate post 400 and two alternative struts 500, 5002 suitable for this post 400 are shown in perspective view. In the example shown, each strut 5002 is braced by different means.

[0439] The alternative strut 5002 for the robust intermediate post 400 is the same as the alternative strut 5001 hereinbefore described, aside from the strut top piece 175 and the way in which it attaches to the robust intermediate post 400.

[0440] The alternative strut 5002 comprises a top collar piece 187, shown in Figure 99, and a third example strut top piece 175, 1753, shown in Figure 100. The third example strut top piece 1753 is attached to the bar 150 of the robust intermediate post 400 via the top collar piece 187. The third example strut top piece 1753 is the same as the second example strut top piece 1752, aside from its dimensions; the curvature of the curved back piece 182 in the present example is set to conform to the shape of the curved sides of the top collar piece 187.

[0441] With reference to Figure 101, the top collar piece 187 is dimensioned to conform to the cross-sectional outline of the bar 150. The top collar piece 187 also includes holes 188 which correspond to the strut holes 102 of the bar 150. In use, the curved back piece 182 of the third example strut top piece 1753 is placed against the top collarpiece 187 such that the holes 102, 188 and slot 186 align; this is show in Figure 102. As shown in the present example, the alternative strut 5002 attaches to the robust intermediate post 400 via a point-jointed connection in the same way as the alternative strut 5001 attaching to the alternative strainer post 200, which is hereinbefore described with respect to Figure 97.

[0442] As hereinbefore explained, the slot 186 and the curvature of the curved back piece 182 allow the third example strut top piece 1753 to be partially rotated relative to the strut hole 102. This allows flexibility for the alternative strut 5002 to be set in the direction desired by the installer.

[0443] Since there is only strut hole 102 for attaching the third example strut top piece 1753 to the robust intermediate post 400, the angle at which the strut 400 can be aligned relative to the fence line is restricted by the length of the slot 186. In one example, this angle may be limited to 30° from the fence line. Other examples, the angle of restriction may be different.

[0444] As shown in Figure 98, two alternative struts 5002 may be attached to the robust intermediate post 400 and, consequently, the angle between them in a preferred example is restricted from 120° to 180°. This is suitable for applications in which the robust intermediate post 400 is only being used to i) reinforce a long run of fence, ii) used for minor turns in the fence line, iii) or used at the bottom of a dip in the ground topography, as the upward force on posts in this area can be significant.

[0445] Modifications

[0446] It will be appreciated that various modifications may be made to the embodiments hereinbefore described. Such modifications may involve equivalent and other features which are already known. Features of one embodiment may be replaced or supplemented by features of another embodiment. Dimensions, such as thicknesses, of various components may be adjusted according to use requirements, for example to enhance the strength of the posts 2, 3, 200, 300, 400.

[0447] Although claims have been formulated in this application to particular combinations of features, it should be understood that the scope of the disclosure of the present invention also includes any novel features or any novel combination of features disclosed herein either explicitly or implicitly or any generalization thereof, whether or not it relates to the same invention as presently claimed in any claim and whether or not it mitigates any or all of the same technical problems as does the presentinvention. The applicant hereby gives notice that new claims may be formulated to such features and / or combinations of such features during the prosecution of the present application or of any further application derived therefrom.

Claims

Claims1. A post for tensioned steel wire fencing comprising:a base part for ground insertion; anda top part partially insertable into the base part, the top part comprising a non-insertable region for engaging with fence wiring;wherein:once inserted into the base part, the top part and the base part are interlocked via an interlocking mechanism; andthe base part is configured to be inserted into the ground via a driving force applied to the base part at intervals.

2. A post according to claim 1, wherein the base part is configured to receive a partially insertable driving tool, wherein the partially insertable driving tool is a bar configured to transmit the driving force to the base part at intervals.

3. A post according to claims 1 or 2, wherein the top part is inserted into the base part after the base part is inserted into the ground.

4. A post according to any preceding claim, wherein the base part is configured to move in a substantially non-rotational direction when being inserted into the ground via the driving force.

5. A post according to any preceding claim, wherein the interlocking mechanism:is activated by the relative movement of the top part with respect to the base part during insertion; and / oris irreversible once activated; and / orprevents relative movement of the top part with respect to the base part once activated.

6. A post according to any preceding claim, wherein the post is a strainer post.

7. A post according to claim 6, wherein:the base part comprises a base part body and a sleeve part slotted into and fixed within the base part body; andonce inserted, a section of the top part is positioned within the sleeve part.

8. A post according to any one of claims 1 to 5, wherein the post is an intermediate post.

9. A post according to any one of claims 6 to 8, wherein the interlocking mechanism is realised by:a plurality of interlocking pieces comprised in the base part; anda plurality of holes or a trench comprised in the top part;wherein the interlocking mechanism is activated when each interlocking piece engages with the trench or a respective hole.

10. A post according to claim 9, wherein:each interlocking piece is configured to i) move radially with respect to a central axis of the base part in response to a force, and ii) return to its original position once the force is removed; andeach interlocking piece engages with a respective hole or the trench via its radial movement.

11. A post according to claim 8, wherein the interlocking mechanism is realised by:a plurality of recesses comprised in the base part; anda plurality of protrusions comprised in the top part;wherein the interlocking mechanism is activated when each protrusion engages with a respective recess.

12. A post according to any preceding claim, wherein the top part and / or the base part is a composite part comprising metal and plastic elements.

13. A driving tool for insertion into the base part of the post according to any preceding claim, wherein the driving tool is configured to transmit the driving force to the base part at intervals.

14. A driving tool according to claim 13, wherein:the driving tool comprises a collar positioned such that, once the driving tool is inserted into the base part, the collar transmits a portion of the driving force to the top of the base part; and / orthe driving tool is dimensioned to apply a portion of the driving force to at least one discrete subsection of the base part.

15. A post assembly system comprising:the post according to any one of claims 1 to 12; anda driving tool according to claims 13 or 14;wherein:the base part is a tube open at each end; andthe driving tool partially extends beyond the base part into the ground when transmitting the driving force.

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