An assembly comprising a hollow chamber extrusion board and an end cap assembly

Abstract

The invention provides an assembly comprising a hollow chamber extrusion board for mounting on an end of a roof edge, having at least one longitudinal hollow board chamber, a board width, a board front face and a board rear face, a board cross section, and having a board ending, the assembly further comprises an end cap assembly for providing end caps for attaching to the board endings, the end cap assembly comprising a first plate having a first length and a first width, with the first length larger than the first width, the first plate having a rear surface configured to engage the board ending and a front surface at the opposite side of the rear surface, a second plate attached substantially perpendicular to the first plate on its rear surface, the second plate positioned on the first plate to leave at least a free end free of the second plate, and an end plate at an end of the first plate and on its rear surface.

Description

Field of the invention

[0001] The invention relates to an assembly comprising a hollow chamber extrusion board and an end cap assembly, and a method of providing a board, in particular a bargeboard, with an end cap.Background of the invention

[0002] NL2004495 of applicant describes examples of facade elements. Usually, these elements are extruded and from a polymer material.

[0003] EP2497873 of applicant according to its abstract "relates to an assembly, particularly a facade cladding element assembly comprising: a synthetic element, particularly a facade element, with an end and at least one hollow chamber that is continuous in the longitudinal direction; a clamping part of a substantially strip-shaped resilient material, comprising at least one opening with on the edge lips that are situated opposite each other and extend from the strip and in a neutral position extend towards the opening, and which lips are provided with first hook members that extend outward from the lips, and second hook members that extend inward in the opening, and an end part provided with at least one projecting part for attachment to the end of the synthetic element to provide its finish, wherein the clamping part with the lips extending in the hole is arranged on the end of the synthetic element, and the end part is subsequently arranged on the clamping part wherein the projecting part extends in the hole and through the opening, having mutual dimensions adapted such that the projecting part pushes the lips apart with the outward hook members clamping in the walls of the continuous hollow chamber and with the inward hook members clamping in the projecting part.".

[0004] The end of a facade element is closed with an clamping part and an end part. This provided an end that stays on the facade element after years outdoors.

[0005] On the basis of these known facade elements and additional elements, applicant developed additional, versatile elements that provide additional use.Summary of the invention

[0006] The prior art shows several elements that can be applied to facade elements. It is an aspect of the invention to provide an additional and / or alternative element that provide new functionality. Preferably, the element further at least partly obviates one or more of above-described drawbacks.

[0007] There is provide an assembly comprising: a hollow chamber extrusion board for mounting on an end of a roof edge, having at least one longitudinal hollow board chamber, a board width, a board front face and a board rear face, a board cross section, and having a board ending.

[0008] The assembly further comprises an end cap assembly for providing end caps for attaching to the board endings.

[0009] The end cap assembly comprising: a first plate having a first length and a first width, with the first length larger than the first width, the first plate having a rear surface configured to engage the board ending and a front surface at the opposite side of the rear surface; a second plate attached substantially perpendicular to the first plate on its rear surface, having a second length and a second width, with the second length larger than the second width, the second length parallel to first length and the second length smaller than the first length, the second plate positioned on the first plate to leave at least a free end free of the second plate, and an end plate at an end of the first plate and on its rear surface, the end plate having a third length and a third width, with the third length substantially parallel to the first length and smaller than the free end, and the end plate attached at or near a first side edge of the first plate, and with the first length at least twice the board width.

[0010] The current end cap allows secure and easy fixing to a board. Even under outdoor condition, the current end cap covers the board end from sight, helping the wood look appearance to stay. In particular when the board end is at an angle β with respect to the longitudinal direction as defined below and in the drawings of less than 90 degrees, the current end cap allows the same covering of the board end. The current end cap can easily be fit to different length, which is required for different angles β of usually between 30 and 85 degrees.

[0011] The extruded board and coupling element usually comprise polymer material. In some embodiments this polymer material comprises additional elements like fillers, colorants, pigments, and other know additions. Some of these additional elements may make even more than 50% by weight of the material from which the boards and coupling element is made.

[0012] Usually, the board and coupling element and end cap comprise, in particular largely are made of, thermoplastic polymer. In particular, the board is often from polyvinylchloride (PVC) because of its durability. Alternative and suitable polymers are known to the skilled person, and may comprise polyethylene (PE), polypropylene (PP), polyester, nylon, and similar polymers and polymer mixtures. The end caps and coupling elements often comprise polyvinylchloride (PVC), polyethylene, polypropylene, nylon and other polymers and polymer mixtures.

[0013] The board is usually extruded and has continuous, longitudinal chambers or hollow chambers. The end caps are usually injection moulded, but may also be produced using additive manufacturing, like for instance 3D printing.

[0014] The current end cap assembly has a plate shaped such that it at least functionally closes off an end of the at least one longitudinal board chamber at the end of the extrusion board or boards. In embodiments, there is a small notch providing controlled ventilation of the longitudinal board chamber. In particular, the plate functionally matched the cross section of the extrusion board of boards. Matching in this respect means that the plate can have a front edge that may be flush with the front surface of the extrusion board or boards. Also within this scope is that the front edge extends a little from the front surface. In particular the front edge extends less than 2 mm. In particular the front edge extends less than 1 mm. Also within this scope is that the front edge is indenting a little with respect the front surface. In particular, it indents less than 2 mm. In particular the front edge indents less than 1 mm. For design purposes, it may also be desirable to make at least one of the end cap in contrasting colours.

[0015] The end cap assembly in use usually will be cut into two parts, with each end providing an end cap for a board end. The current end caps can be used for covering board ends that are straight, i.e. rectangular with respect to the longitudinal axis of the board. More often, however, the end cap assembly will be used for providing end caps for board ends that are not cut straight, but at an angle of smaller than 90 degrees and up to 45 degrees. These boards are mostly used for providing bargeboards. For that reason, as the length of the end cap needed will ne more than two times the width of the board, the length of the end cap assembly, in particular the first plate length, will be at least three times the width of the board.Detailed description of the invention

[0016] In this part, specific embodiments are elucidated. These embodiments can be combined in order to further optimize the design.

[0017] In an embodiment, the end cap assembly comprises two end plates, at least one end plate at or near each end of the first plate. In a particular embodiment the second plate is positioned lengthwise substantially centrally on the first plate. In this way when viewing up when the ledge is positioned below, the board provides an impression of a thicker board. In an embodiment it provides equal free ends (d4) at both ends of the first plate. Usually when a board is provided with an attachment rail, in particular an attachment rail near the thickened ledge, this free end prevents interference of the end plate or second plate with the attachment rail.

[0018] In an embodiment, the second plate is provided on the first plate between the opposite length sides of the first plate. In particular the second plate has at least 25% of the width (W1) at each side of the length (L2) of the second plate. In a particular embodiment preferably at least 35% of the width (W1).

[0019] In an embodiment, the end cap assembly is symmetrical. In this embodiment it has opposite ends provided with end plates. In particular allowing the end can assembly to be cut into two end caps each having an end plate. Thus one end cap assembly can provide two end caps.

[0020] In an embodiment, the board comprises a board ledge along a side of the board, usually the side which when the board is fixed to a building is an underside, usually visible, the board ledge providing a thickened ledge and said first plate width (W1) substantially matches a sum of the board thickness (d1) and the thickness of the board ledge.

[0021] In an embodiment, the board has a thickened ledge extending from the rear surface of the board. In particular, the thickened ledge has a thickness of 3-15 mm (extending away) from the rear surface of the board. In an embodiment, additionally the board ledge has a width of 3-20 mm. In particular the width is 5-10 mm. In particular the board having a thickness (d1) of 3-25 mm. In particular it is 5-20 mm. Specifically the thickness is 5-10 mm.

[0022] In an embodiment, the end plate is provided to engage the board ledge when the end cap is mounted to a board end and the second plate is positioned on the first plate for when mounted engaging the rear surface of the board with the outer edge of the first plate aligning the front surface of the board and the rear edge of the first plate aligned with the outer end of the thickened ledge. In particular the end plate is provided along the rear edge of the first plate and the second plate is provided spaced a second plate distance (d1) from the rear edge of the first plate for allowing fixing the second plate to the rear surface of the board and aligning the front edge of the first plate with the front surface of the board.

[0023] In an embodiment, the second plate comprises at least two holes for mechanical attachment to the board. In particular the second plate comprises a plurality of holes for mechanical attachment to the roof edge. In an embodiment the holes form a substantially straight line substantially parallel to the second plate length (L2). In an embodiment, the distance between the holes is 50-75 mm. In an embodiment the distance is 55-70 mm. In an embodiment the distance is 60-65 mm.

[0024] In an embodiment the second plate is provided with at least four holes distributed along a length of the second plate. In this way two end caps can be provided from one end cap assembly.

[0025] In an embodiment, the at least one end plate comprises at least one hole for mechanical attachment to the board. In an embodiment the at least one end plate comprises at least two holes for mechanical attachment to the roof edge, preferably wherein the holes form a straight line parallel to length l3. In an embodiment a distance between the holes (h3) is 5-25 mm. In an embodiment the distance is 10-22 mm. In an embodiment the distance is 13-19 mm.

[0026] In an embodiment the at least one end plate is configured to allow breaking off at least part of the said at least one end plate, in particular the at least one end plate has a weakening line for allowing said braking off, more in particular said weakening line being slanted ending at or near an end of the first plate at of near the first plate, more in particular the at least one end plate comprises at least two hole for mechanical attachment to the board, with at least one hole at each side of the weakening line.

[0027] In an embodiment the first plate comprises at least one ventilation groove in its rear surface for aeration and / or ventilation of the at least one longitudinal hollow board chamber. In an embodiment the first plate comprises a plurality of ventilation grooves in the first plate for aeration and / or ventilation of the at least one longitudinal hollow board chamber. In an embodiment the ventilation grooves are aligned with the hollow board chambers of the board. In an embodiment the distance between the ventilation grooves is 10-30 mm. Preferably the distance is 15-25 mm. More preferably the distance is 18-22 mm. In an embodiment the at least one ventilation groove starts at a first plate side and continues under said second plate.

[0028] In an embodiment the first plate has a length (L1) of at least twice a width of the board. In an embodiment the first plate has a length (L1) of 500-900 mm, preferably 600-800 mm, more preferably 650-750 mm.

[0029] In an embodiment the first plate has a width (W1) of at least a board thickness (d1), in particular at least board thickness including a board ledge (d2), in particular substantially a board thickness including a board ledge (d2).

[0030] In en embodiment the first plate has a width (W1) of 5-50 mm, preferably 10-35 mm. In an embodiment the width is 15-25 mm.

[0031] In an embodiment the second plate has a length (L2) of at least a board width. In an embodiment the second plate has a length (L2) of 300-800 mm, preferably 400-700 mm. In an embodiment the length is 500-600 mm

[0032] In an embodiment the second plate has a width (W2) of 4-50 mm, preferably 9-30 mm. In an embodiment the width is 14-20 mm.

[0033] In an embodiment the at least one end plate has a length (L3) of 8-45 mm, preferably 15-35 mm. In an embodiment the length is 20-30 mm.

[0034] In an embodiment the at least one end plate has a width (W3) of 3-25 mm, preferably 6-20 mm. In an embodiment the width is 9-15 mm.

[0035] In an embodiment the distance between a length end of the second plate and a nearest at least one end plate length end is 5-75 mm, preferably 15-56 mm. In an embodiment the length is 25-55 mm, preferably 35-45 mm.

[0036] There is further provided an end cap assembly comprising all the features of the end cap assembly recited above.

[0037] There is further provided a kit of parts comprising the board and an end cap assembly from the assembly of any one of the preceding claims.

[0038] There is further provided a method of providing a board, in particular a bargeboard, with an end cap, comprising: providing a board and an end cap assembly described above of below; providing the board with a first board end at an angle β with the longitudinal direction of the board of from 90 degrees to 30 degrees or from 90 degrees to -30 degrees; cutting the end cap assembly into parts providing end caps providing a first end cap matching the first board end, and attaching the first end cap to the first board end, comprising fixing its second plate to the rear surface of the board.

[0039] In an embodiment of the method, the board comprises a or the thickened ledge along one side, and wherein the attaching further comprises fixing the end plate of the first end cap to a rear surface of the thickened ledge.

[0040] The term "substantially" herein or in "substantially consists", will be understood by the person skilled in the art. The term "substantially" may also include embodiments with "entirely", "completely", "all", etc. Hence, in embodiments the adjective substantially may also be removed. Where applicable, the term "substantially" may also relate to 90% or higher, such as 95% or higher, especially 99% or higher, even more especially 99.5% or higher, including 100%. The term "comprise" includes also embodiments wherein the term "comprises" means "consists of'.

[0041] The term "functionally" will be understood by, and be clear to, a person skilled in the art. The term "substantially" as well as "functionally" may also include embodiments with "entirely", "completely", "all", etc. Hence, in embodiments the adjective functionally may also be removed. When used, for instance in "functionally parallel", a skilled person will understand that the adjective "functionally" includes the term substantially as explained above. Functionally in particular is to be understood to include a configuration of features that allows these features to function as if the adjective "functionally" was not present. The term "functionally" is intended to cover variations in the feature to which it refers, and which variations are such that in the functional use of the feature, possibly in combination with other features it relates to in the invention, that combination of features is able to operate or function. For instance, if an antenna is functionally coupled or functionally connected to a communication device, received electromagnetic signals that are receives by the antenna can be used by the communication device. The word "functionally" as for instance used in "functionally parallel" is used to cover exactly parallel, but also the embodiments that are covered by the word "substantially" explained above. For instance, "functionally parallel" relates to embodiments that in operation function as if the parts are for instance parallel. This covers embodiments for which it is clear to a skilled person that it operates within its intended field of use as if it were parallel.

[0042] Furthermore, the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.

[0043] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. Use of the verb "to comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

[0044] The invention further applies to an element comprising one or more of the characterising features described in the description and / or shown in the attached drawings. The invention further pertains to a method or process comprising one or more of the characterising features described in the description and / or shown in the attached drawings.

[0045] The various aspects discussed in this patent can be combined in order to provide additional advantages. Furthermore, some of the features can form the basis for one or more divisional applications.Brief description of the drawings

[0046] Embodiments of the invention will now be described, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which: Figures 1A, 1B two perspective views of a board and an end cap; Figures 2A-2D two perspective views of opposite ends of the end cap of figures 1A-1B; Figure 3 a view from the rear face of an end cap; Figure 4 a side view of the end cap of figure 3, and Figure 5A and 5B illustrates boards having end (shaded or hatched) cut off along slanted lines.

[0047] The drawings are not necessarily on scale.Description of preferred embodiments

[0048] As mentioned in the background of the invention, the current invention relates end caps 2 for extrusion boards 1. These extrusion boards 1 have at least one longitudinal board chamber 3 or hollow chamber 3, a board front face 4 and a board rear face 5, and a board cross section. Figures 1A and 1B shows such a cross section, here perpendicular to the board longitudinal axis.

[0049] In this example, the board end has an angle α of 0 degrees with respect to a transverse line or an angle β of 90 degrees with the longitudinal direction. i.e., the boards are cut straight. When mounting the board on a roof edge, in some uses it is used as a fascia board. In particular the board can be used as bargeboard or rake fascia ("windveer"), where it is usually attached to each projecting gable of a roof. Often, this is used on a gable roof. The gable roof thus has a pitch with pitch angle γ, and the angle β with the longitudinal usually is half the pitch angle γ which angle β can be between 30 degrees and 70 degrees.

[0050] Figures 1A and 1B depict two perspective views of an example of an extrusion board and matching end cap assembly 2. The board 1 has hollow chambers 3, a front face 4 and a rear face 5. The board 1 is here provided with a mounting rail 6 to aide in attaching the board 1 to a building. The board 1 has a board thickness d1. This board thickness d1 usually is between 0.5 and 2 cm.

[0051] Figures 1A-1B show the end cap assembly 2 in full length. In this embodiment the end cap assembly is symmetric, allowing it to be cut to provide two end caps, or when cutting off one end, to select to make an end cap 2 for one end or the opposite end of the board 1.

[0052] Many designs for such boards 1 of figures 1A and 1B are known or can be designed based on this example. Usually, these boards 1 have a rectangular cross section. In the current example, the board 1 has a board ledge 7. Usually the thicker board ledge 7 is the lower side and / or sight line when the board 1 is mounted on a building. Thus, the thicker board ledge 7 gives the illusion of a thicker wood board. This thus saves material and weight (making mounting and the mounting means easier). The current exemplary board 1 furthermore comprises a mounting rail 6 that can work together with a mounting strip that can be attached or fixed to a building. The total thickness of the board and board ledge together is indicated with d2 in figure 1B, while the board has a thinner thickness d1. Often, is between 1.5 and 2.5 times d1. Often, d2 is twice d1.

[0053] Figures 2A and 2B show an embodiment of one end of the end cap assembly of figures 1A and 1B is detail in different perspective views. Figures 2C and 2D show in detail the opposite end of the end cap assembly 2. In this detailed views, the weakening line or break line 15 can be seem in detail. This line can be sures when the end cap(s) is or are used for slanted ends in order to prevent that the parts of the end plated are visible.

[0054] Figures 2A-2D also illustrate that ventilation grooves 16, explained below, can be made to continue under the end plate and under the second plate 11 to provide ventilation of the hollow chambers 3 of the board 1 when the end cap 2 is mounted.

[0055] Figure 3 shows the end cap assembly 2 on the rear surface, and figure 4 head-on.

[0056] The end cap assembly 2 that is illustrated has a first plate 10 for covering the board end. The first plate 10 in the current embodiment has a first length L1 that is larger than twice the board width. In particular, the first length L1 is larger than three times the board width. In particular, with the equation board end length = board width / cos(α), this can provide end caps that can be used to cover slanting board ends with an angle α as indicated in figure 5A of up to 55 degrees or an angle β of up to 35 degrees. For these acute angles, only an end of an end cap assembly is cut off, and one end cap assembly is used as one end cap for one board end.

[0057] The end cap assembly comprises a first plate (10), a second plate 11 and a third plate 12.

[0058] The first plate 10 has a first length L1 and a first width W1. Here the first length L1 is larger than the first width W1. In other words, the first plate 10 is elongated. For most applications the first plate 10 is rectangular. In the depicted embodiment, the width W1 matches the width of the board including the thickness of the board ledge 7 discussed earlier. In this way, the end cap can help create the illusion of a thicker board 1.

[0059] The first plate 10 has a rear surface configured to engage the board ending and a front surface at the opposite side of the rear surface.

[0060] The second plate 11 is attached substantially perpendicular to the first plate 10 on its rear surface. The second plate 11 has a second length L2 and a second width W2, with the second length L2 larger than the second width W2. Usually, the second plate is rectangular. The second plate 11 in fact provide an attachment part for attaching an end cap to the board end.

[0061] In the illustrated embodiment, the second length L2 is parallel to first length L1. Thus, when cut perpendicularly, the first plate 10 and second plate 11 provide a T cross section.

[0062] The second plate 11 has a second length L2 which is smaller than the first length L1 of the first plate 10. The second plate 11 is positioned on the first plate 10 to leave at least a free end d4 free of the second plate 11. In the current embodiment the second plate 11 is positioned substantially central on the first plate first length L1. In this way, it leaves the same free end d4 on each end of the first plate 10. In this way it allows providing two similar end caps.

[0063] The end cap assembly further comprises an end plate 12 at an end of the first plate 10 and on its rear surface. The end plate 12 has a third length L3 and a third width W3. In the illustrated embodiment, end plates 12 are provided at both ends of the first plate 10. Again, this allows provision of two similar end caps once the end cap assembly is cut in two parts.

[0064] The third length L3 as illustrated is substantially parallel to the first length L1. The third length L3 is smaller than the free end d4 of the first plate 10. Furthermore, the end plate 12 is attached at or near a first side edge of the first plate 10. In the illustrated embodiment, the end plate 12 is provided at the first plate rear edge 20. This allows the end plate 12 to engage the thickened ledge 7 and to be fixed to the thickened ledge 7. Furthermore, (part of) the second plate 11 then engaged the rear board face 5.

[0065] In the current end cap assembly 2 in an embodiment there are ventilation provisions 16 provided. In the end cap assembly 2 the ventilation provisions are end cap ventilation grooves 16. These ventilation grooves 16 do not run all the way through the first plate 10 of the end cap assembly 2. Furthermore, the ventilation grooves 16 are positioned at the rear edge 20 (mounted out of sight) of the first plate 10 of the end cap assembly 2. Thus, when mounted on the end of a board 1, the ventilation groove 16 provides a ventilation opening that is only visible from the rear face of the board 1. Thus when the board 1 is mounted, the ventilation openings provided by the ventilation grooves 16 are not visible. The ventilation groove 16 provides a ventilation opening at the rear edge 20 of the end cap first plate 10. Furthermore, it provides a ventilation channel fluidly connecting the ventilation opening with the inside of a corresponding longitudinal chamber 3 of the board 1. Furthermore, the ventilation grooves 16 continue under the second plate 11 and here also under the third plate 12. Figures 2A-2D illustrate this.

[0066] The position of the ventilation grooves 16 matches the chambers 3. Size and frequency of ventilation grooves 16 are selected such that each hollow chamber 3 is ventilated.

[0067] In an embodiment, the front side 18 of the first plate 10 comprises a surface structure, like a wood grain structure.

[0068] The assembly can in an embodiment used as follows in a method for providing a board end with an end cap. Often, such a broad is used in a bargeboard. A board 1 and an end cap assembly 2 that is symmetric as described above are provided. An end of the board is cut at an angle of between 80 and 50 degrees with respect to the longitudinal axis of the board 1 (angle indicated with β). This provides a slanted end with a length equal to board diameter / cos (α) or a length equal to board diameter / sin (β). Next, the end cap assembly is cut at a first end cap length equal to the slanted end length. The end plate 12 is fixed to the thickened board ledge 7 and the second plate remaining end is fixed to the board rear face 5.

[0069] Figure 4 shows the end cap assembly 2 in longitudinal view. In this embodiment, both the second plate 11 and the end plate 12 are at a respective angle δ, ε with respect to the first plate 10. These angles may be 90 degrees, but tests showed that making this angle a little smaller than 90 degrees would press the first plate onto the board end. It was found that making these angles more than 85 degrees provided sufficient pressure. In particular, an angle of more than 87 degrees already provided sufficient pressure. Please note that it may also be possible to make either one of these angles smaller than 90 degrees.

[0070] In figures 5A and 5B such board ends are illustrated, showing two different barge boards. In this example, the board ends are cut along slanted lines. And providing top angles This slanted line in figure 5A has an angle α with respect to the transverse direction of the board or an angle β with respect to the longitudinal direction of the board. When mounting the board on a roof edge, in some embodiments it is used as a fascia board. In particular, the board can be used as bargeboard or rake fascia ("windveer"), where it is usually attached to each projecting gable of a roof. Often, this is used on a gable roof. The gable roof thus has a pitch angle γ, and the angle β with the longitudinal usually is half that pitch angle γ and the angle β can for instance be between 30 degrees and 70 degrees. In embodiments where the board end is slanted as illustrated, the end cap assembly can easily be used for producing at least one end cap for such a board end. If the length of the first plate is selected long enough, the end cap assembly can provide an end can for two slanted board ends. Figure 5B shows a particular example where the bargeboards have different angle. At each board end, an end cap 2 is mounted. In some instances, one end cap assembly 2 can be used for producing 2 end caps 2, and for very small angels like angle β' and the required end cap length is relatively large with respect to the board width, one end cap assembly 2 is used for producing one end cap 2. According to the requirements, either one end or the opposite end of the end cap assembly can be removed.

[0071] It will also be clear that the above description and drawings are included to illustrate some embodiments of the invention, and not to limit the scope of protection. Starting from this disclosure, many more embodiments will be evident to a skilled person. These embodiments are within the scope of protection and the essence of this invention and are obvious combinations of prior art techniques and the disclosure of this patent.Reference numbers

[0072] 1 hollow chamber extrusion board 2 end cap / end cap assembly 3 hollow chambers 4 board outer surface or board front face 5 building-directed board surface or board rear face 6 mounting rail 7 board ledge 10 First plate 11 Second plate or board mounting plate 12 End plate 13 Second plate mounting holes 14 End plate mounting holes 15 End plate adjustment groove 16 Ventilation groove 17 first plate rear surface 18 first plate front surface 19 first plate front edge 20 first plate rear edge W1 first plate width W2 second plate width W3 end plate width L1 first plate length L2 second plate length L3 end plate length d1 board thickness d2 Sum of board thickness and board ledge thickness d3 second plate spacing d4 first plate free end α α' α" board end angle β β' board end angle with respect to board longitudinal axis or board length γ barge top angle ε end plate angle δ second plate angle

Examples

Embodiment Construction

[0048]As mentioned in the background of the invention, the current invention relates end caps 2 for extrusion boards 1. These extrusion boards 1 have at least one longitudinal board chamber 3 or hollow chamber 3, a board front face 4 and a board rear face 5, and a board cross section. Figures 1A and 1B shows such a cross section, here perpendicular to the board longitudinal axis.

[0049]In this example, the board end has an angle α of 0 degrees with respect to a transverse line or an angle β of 90 degrees with the longitudinal direction. i.e., the boards are cut straight. When mounting the board on a roof edge, in some uses it is used as a fascia board. In particular the board can be used as bargeboard or rake fascia ("windveer"), where it is usually attached to each projecting gable of a roof. Often, this is used on a gable roof. The gable roof thus has a pitch with pitch angle γ, and the angle β with the longitudinal usually is half the pitch angle γ which angle β can be between 30 ...

Field of the invention

[0001] The invention relates to an assembly comprising a hollow chamber extrusion board and an end cap assembly, and a method of providing a board, in particular a bargeboard, with an end cap.Background of the invention

[0002] NL2004495 of applicant describes examples of facade elements. Usually, these elements are extruded and from a polymer material.

[0003] EP2497873 of applicant according to its abstract "relates to an assembly, particularly a facade cladding element assembly comprising: a synthetic element, particularly a facade element, with an end and at least one hollow chamber that is continuous in the longitudinal direction; a clamping part of a substantially strip-shaped resilient material, comprising at least one opening with on the edge lips that are situated opposite each other and extend from the strip and in a neutral position extend towards the opening, and which lips are provided with first hook members that extend outward from the lips, and second hook members that extend inward in the opening, and an end part provided with at least one projecting part for attachment to the end of the synthetic element to provide its finish, wherein the clamping part with the lips extending in the hole is arranged on the end of the synthetic element, and the end part is subsequently arranged on the clamping part wherein the projecting part extends in the hole and through the opening, having mutual dimensions adapted such that the projecting part pushes the lips apart with the outward hook members clamping in the walls of the continuous hollow chamber and with the inward hook members clamping in the projecting part.".

[0004] The end of a facade element is closed with an clamping part and an end part. This provided an end that stays on the facade element after years outdoors.

[0005] On the basis of these known facade elements and additional elements, applicant developed additional, versatile elements that provide additional use.Summary of the invention

[0006] The prior art shows several elements that can be applied to facade elements. It is an aspect of the invention to provide an additional and / or alternative element that provide new functionality. Preferably, the element further at least partly obviates one or more of above-described drawbacks.

[0007] There is provide an assembly comprising: a hollow chamber extrusion board for mounting on an end of a roof edge, having at least one longitudinal hollow board chamber, a board width, a board front face and a board rear face, a board cross section, and having a board ending.

[0008] The assembly further comprises an end cap assembly for providing end caps for attaching to the board endings.

[0009] The end cap assembly comprising: a first plate having a first length and a first width, with the first length larger than the first width, the first plate having a rear surface configured to engage the board ending and a front surface at the opposite side of the rear surface; a second plate attached substantially perpendicular to the first plate on its rear surface, having a second length and a second width, with the second length larger than the second width, the second length parallel to first length and the second length smaller than the first length, the second plate positioned on the first plate to leave at least a free end free of the second plate, and an end plate at an end of the first plate and on its rear surface, the end plate having a third length and a third width, with the third length substantially parallel to the first length and smaller than the free end, and the end plate attached at or near a first side edge of the first plate, and with the first length at least twice the board width.

[0010] The current end cap allows secure and easy fixing to a board. Even under outdoor condition, the current end cap covers the board end from sight, helping the wood look appearance to stay. In particular when the board end is at an angle β with respect to the longitudinal direction as defined below and in the drawings of less than 90 degrees, the current end cap allows the same covering of the board end. The current end cap can easily be fit to different length, which is required for different angles β of usually between 30 and 85 degrees.

[0011] The extruded board and coupling element usually comprise polymer material. In some embodiments this polymer material comprises additional elements like fillers, colorants, pigments, and other know additions. Some of these additional elements may make even more than 50% by weight of the material from which the boards and coupling element is made.

[0012] Usually, the board and coupling element and end cap comprise, in particular largely are made of, thermoplastic polymer. In particular, the board is often from polyvinylchloride (PVC) because of its durability. Alternative and suitable polymers are known to the skilled person, and may comprise polyethylene (PE), polypropylene (PP), polyester, nylon, and similar polymers and polymer mixtures. The end caps and coupling elements often comprise polyvinylchloride (PVC), polyethylene, polypropylene, nylon and other polymers and polymer mixtures.

[0013] The board is usually extruded and has continuous, longitudinal chambers or hollow chambers. The end caps are usually injection moulded, but may also be produced using additive manufacturing, like for instance 3D printing.

[0014] The current end cap assembly has a plate shaped such that it at least functionally closes off an end of the at least one longitudinal board chamber at the end of the extrusion board or boards. In embodiments, there is a small notch providing controlled ventilation of the longitudinal board chamber. In particular, the plate functionally matched the cross section of the extrusion board of boards. Matching in this respect means that the plate can have a front edge that may be flush with the front surface of the extrusion board or boards. Also within this scope is that the front edge extends a little from the front surface. In particular the front edge extends less than 2 mm. In particular the front edge extends less than 1 mm. Also within this scope is that the front edge is indenting a little with respect the front surface. In particular, it indents less than 2 mm. In particular the front edge indents less than 1 mm. For design purposes, it may also be desirable to make at least one of the end cap in contrasting colours.

[0015] The end cap assembly in use usually will be cut into two parts, with each end providing an end cap for a board end. The current end caps can be used for covering board ends that are straight, i.e. rectangular with respect to the longitudinal axis of the board. More often, however, the end cap assembly will be used for providing end caps for board ends that are not cut straight, but at an angle of smaller than 90 degrees and up to 45 degrees. These boards are mostly used for providing bargeboards. For that reason, as the length of the end cap needed will ne more than two times the width of the board, the length of the end cap assembly, in particular the first plate length, will be at least three times the width of the board.Detailed description of the invention

[0016] In this part, specific embodiments are elucidated. These embodiments can be combined in order to further optimize the design.

[0017] In an embodiment, the end cap assembly comprises two end plates, at least one end plate at or near each end of the first plate. In a particular embodiment the second plate is positioned lengthwise substantially centrally on the first plate. In this way when viewing up when the ledge is positioned below, the board provides an impression of a thicker board. In an embodiment it provides equal free ends (d4) at both ends of the first plate. Usually when a board is provided with an attachment rail, in particular an attachment rail near the thickened ledge, this free end prevents interference of the end plate or second plate with the attachment rail.

[0018] In an embodiment, the second plate is provided on the first plate between the opposite length sides of the first plate. In particular the second plate has at least 25% of the width (W1) at each side of the length (L2) of the second plate. In a particular embodiment preferably at least 35% of the width (W1).

[0019] In an embodiment, the end cap assembly is symmetrical. In this embodiment it has opposite ends provided with end plates. In particular allowing the end can assembly to be cut into two end caps each having an end plate. Thus one end cap assembly can provide two end caps.

[0020] In an embodiment, the board comprises a board ledge along a side of the board, usually the side which when the board is fixed to a building is an underside, usually visible, the board ledge providing a thickened ledge and said first plate width (W1) substantially matches a sum of the board thickness (d1) and the thickness of the board ledge.

[0021] In an embodiment, the board has a thickened ledge extending from the rear surface of the board. In particular, the thickened ledge has a thickness of 3-15 mm (extending away) from the rear surface of the board. In an embodiment, additionally the board ledge has a width of 3-20 mm. In particular the width is 5-10 mm. In particular the board having a thickness (d1) of 3-25 mm. In particular it is 5-20 mm. Specifically the thickness is 5-10 mm.

[0022] In an embodiment, the end plate is provided to engage the board ledge when the end cap is mounted to a board end and the second plate is positioned on the first plate for when mounted engaging the rear surface of the board with the outer edge of the first plate aligning the front surface of the board and the rear edge of the first plate aligned with the outer end of the thickened ledge. In particular the end plate is provided along the rear edge of the first plate and the second plate is provided spaced a second plate distance (d1) from the rear edge of the first plate for allowing fixing the second plate to the rear surface of the board and aligning the front edge of the first plate with the front surface of the board.

[0023] In an embodiment, the second plate comprises at least two holes for mechanical attachment to the board. In particular the second plate comprises a plurality of holes for mechanical attachment to the roof edge. In an embodiment the holes form a substantially straight line substantially parallel to the second plate length (L2). In an embodiment, the distance between the holes is 50-75 mm. In an embodiment the distance is 55-70 mm. In an embodiment the distance is 60-65 mm.

[0024] In an embodiment the second plate is provided with at least four holes distributed along a length of the second plate. In this way two end caps can be provided from one end cap assembly.

[0025] In an embodiment, the at least one end plate comprises at least one hole for mechanical attachment to the board. In an embodiment the at least one end plate comprises at least two holes for mechanical attachment to the roof edge, preferably wherein the holes form a straight line parallel to length l3. In an embodiment a distance between the holes (h3) is 5-25 mm. In an embodiment the distance is 10-22 mm. In an embodiment the distance is 13-19 mm.

[0026] In an embodiment the at least one end plate is configured to allow breaking off at least part of the said at least one end plate, in particular the at least one end plate has a weakening line for allowing said braking off, more in particular said weakening line being slanted ending at or near an end of the first plate at of near the first plate, more in particular the at least one end plate comprises at least two hole for mechanical attachment to the board, with at least one hole at each side of the weakening line.

[0027] In an embodiment the first plate comprises at least one ventilation groove in its rear surface for aeration and / or ventilation of the at least one longitudinal hollow board chamber. In an embodiment the first plate comprises a plurality of ventilation grooves in the first plate for aeration and / or ventilation of the at least one longitudinal hollow board chamber. In an embodiment the ventilation grooves are aligned with the hollow board chambers of the board. In an embodiment the distance between the ventilation grooves is 10-30 mm. Preferably the distance is 15-25 mm. More preferably the distance is 18-22 mm. In an embodiment the at least one ventilation groove starts at a first plate side and continues under said second plate.

[0028] In an embodiment the first plate has a length (L1) of at least twice a width of the board. In an embodiment the first plate has a length (L1) of 500-900 mm, preferably 600-800 mm, more preferably 650-750 mm.

[0029] In an embodiment the first plate has a width (W1) of at least a board thickness (d1), in particular at least board thickness including a board ledge (d2), in particular substantially a board thickness including a board ledge (d2).

[0030] In en embodiment the first plate has a width (W1) of 5-50 mm, preferably 10-35 mm. In an embodiment the width is 15-25 mm.

[0031] In an embodiment the second plate has a length (L2) of at least a board width. In an embodiment the second plate has a length (L2) of 300-800 mm, preferably 400-700 mm. In an embodiment the length is 500-600 mm

[0032] In an embodiment the second plate has a width (W2) of 4-50 mm, preferably 9-30 mm. In an embodiment the width is 14-20 mm.

[0033] In an embodiment the at least one end plate has a length (L3) of 8-45 mm, preferably 15-35 mm. In an embodiment the length is 20-30 mm.

[0034] In an embodiment the at least one end plate has a width (W3) of 3-25 mm, preferably 6-20 mm. In an embodiment the width is 9-15 mm.

[0035] In an embodiment the distance between a length end of the second plate and a nearest at least one end plate length end is 5-75 mm, preferably 15-56 mm. In an embodiment the length is 25-55 mm, preferably 35-45 mm.

[0036] There is further provided an end cap assembly comprising all the features of the end cap assembly recited above.

[0037] There is further provided a kit of parts comprising the board and an end cap assembly from the assembly of any one of the preceding claims.

[0038] There is further provided a method of providing a board, in particular a bargeboard, with an end cap, comprising: providing a board and an end cap assembly described above of below; providing the board with a first board end at an angle β with the longitudinal direction of the board of from 90 degrees to 30 degrees or from 90 degrees to -30 degrees; cutting the end cap assembly into parts providing end caps providing a first end cap matching the first board end, and attaching the first end cap to the first board end, comprising fixing its second plate to the rear surface of the board.

[0039] In an embodiment of the method, the board comprises a or the thickened ledge along one side, and wherein the attaching further comprises fixing the end plate of the first end cap to a rear surface of the thickened ledge.

[0040] The term "substantially" herein or in "substantially consists", will be understood by the person skilled in the art. The term "substantially" may also include embodiments with "entirely", "completely", "all", etc. Hence, in embodiments the adjective substantially may also be removed. Where applicable, the term "substantially" may also relate to 90% or higher, such as 95% or higher, especially 99% or higher, even more especially 99.5% or higher, including 100%. The term "comprise" includes also embodiments wherein the term "comprises" means "consists of'.

[0041] The term "functionally" will be understood by, and be clear to, a person skilled in the art. The term "substantially" as well as "functionally" may also include embodiments with "entirely", "completely", "all", etc. Hence, in embodiments the adjective functionally may also be removed. When used, for instance in "functionally parallel", a skilled person will understand that the adjective "functionally" includes the term substantially as explained above. Functionally in particular is to be understood to include a configuration of features that allows these features to function as if the adjective "functionally" was not present. The term "functionally" is intended to cover variations in the feature to which it refers, and which variations are such that in the functional use of the feature, possibly in combination with other features it relates to in the invention, that combination of features is able to operate or function. For instance, if an antenna is functionally coupled or functionally connected to a communication device, received electromagnetic signals that are receives by the antenna can be used by the communication device. The word "functionally" as for instance used in "functionally parallel" is used to cover exactly parallel, but also the embodiments that are covered by the word "substantially" explained above. For instance, "functionally parallel" relates to embodiments that in operation function as if the parts are for instance parallel. This covers embodiments for which it is clear to a skilled person that it operates within its intended field of use as if it were parallel.

[0042] Furthermore, the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.

[0043] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. Use of the verb "to comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

[0044] The invention further applies to an element comprising one or more of the characterising features described in the description and / or shown in the attached drawings. The invention further pertains to a method or process comprising one or more of the characterising features described in the description and / or shown in the attached drawings.

[0045] The various aspects discussed in this patent can be combined in order to provide additional advantages. Furthermore, some of the features can form the basis for one or more divisional applications.Brief description of the drawings

[0046] Embodiments of the invention will now be described, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which: Figures 1A, 1B two perspective views of a board and an end cap; Figures 2A-2D two perspective views of opposite ends of the end cap of figures 1A-1B; Figure 3 a view from the rear face of an end cap; Figure 4 a side view of the end cap of figure 3, and Figure 5A and 5B illustrates boards having end (shaded or hatched) cut off along slanted lines.

[0047] The drawings are not necessarily on scale.Description of preferred embodiments

[0048] As mentioned in the background of the invention, the current invention relates end caps 2 for extrusion boards 1. These extrusion boards 1 have at least one longitudinal board chamber 3 or hollow chamber 3, a board front face 4 and a board rear face 5, and a board cross section. Figures 1A and 1B shows such a cross section, here perpendicular to the board longitudinal axis.

[0049] In this example, the board end has an angle α of 0 degrees with respect to a transverse line or an angle β of 90 degrees with the longitudinal direction. i.e., the boards are cut straight. When mounting the board on a roof edge, in some uses it is used as a fascia board. In particular the board can be used as bargeboard or rake fascia ("windveer"), where it is usually attached to each projecting gable of a roof. Often, this is used on a gable roof. The gable roof thus has a pitch with pitch angle γ, and the angle β with the longitudinal usually is half the pitch angle γ which angle β can be between 30 degrees and 70 degrees.

[0050] Figures 1A and 1B depict two perspective views of an example of an extrusion board and matching end cap assembly 2. The board 1 has hollow chambers 3, a front face 4 and a rear face 5. The board 1 is here provided with a mounting rail 6 to aide in attaching the board 1 to a building. The board 1 has a board thickness d1. This board thickness d1 usually is between 0.5 and 2 cm.

[0051] Figures 1A-1B show the end cap assembly 2 in full length. In this embodiment the end cap assembly is symmetric, allowing it to be cut to provide two end caps, or when cutting off one end, to select to make an end cap 2 for one end or the opposite end of the board 1.

[0052] Many designs for such boards 1 of figures 1A and 1B are known or can be designed based on this example. Usually, these boards 1 have a rectangular cross section. In the current example, the board 1 has a board ledge 7. Usually the thicker board ledge 7 is the lower side and / or sight line when the board 1 is mounted on a building. Thus, the thicker board ledge 7 gives the illusion of a thicker wood board. This thus saves material and weight (making mounting and the mounting means easier). The current exemplary board 1 furthermore comprises a mounting rail 6 that can work together with a mounting strip that can be attached or fixed to a building. The total thickness of the board and board ledge together is indicated with d2 in figure 1B, while the board has a thinner thickness d1. Often, is between 1.5 and 2.5 times d1. Often, d2 is twice d1.

[0053] Figures 2A and 2B show an embodiment of one end of the end cap assembly of figures 1A and 1B is detail in different perspective views. Figures 2C and 2D show in detail the opposite end of the end cap assembly 2. In this detailed views, the weakening line or break line 15 can be seem in detail. This line can be sures when the end cap(s) is or are used for slanted ends in order to prevent that the parts of the end plated are visible.

[0054] Figures 2A-2D also illustrate that ventilation grooves 16, explained below, can be made to continue under the end plate and under the second plate 11 to provide ventilation of the hollow chambers 3 of the board 1 when the end cap 2 is mounted.

[0055] Figure 3 shows the end cap assembly 2 on the rear surface, and figure 4 head-on.

[0056] The end cap assembly 2 that is illustrated has a first plate 10 for covering the board end. The first plate 10 in the current embodiment has a first length L1 that is larger than twice the board width. In particular, the first length L1 is larger than three times the board width. In particular, with the equation board end length = board width / cos(α), this can provide end caps that can be used to cover slanting board ends with an angle α as indicated in figure 5A of up to 55 degrees or an angle β of up to 35 degrees. For these acute angles, only an end of an end cap assembly is cut off, and one end cap assembly is used as one end cap for one board end.

[0057] The end cap assembly comprises a first plate (10), a second plate 11 and a third plate 12.

[0058] The first plate 10 has a first length L1 and a first width W1. Here the first length L1 is larger than the first width W1. In other words, the first plate 10 is elongated. For most applications the first plate 10 is rectangular. In the depicted embodiment, the width W1 matches the width of the board including the thickness of the board ledge 7 discussed earlier. In this way, the end cap can help create the illusion of a thicker board 1.

[0059] The first plate 10 has a rear surface configured to engage the board ending and a front surface at the opposite side of the rear surface.

[0060] The second plate 11 is attached substantially perpendicular to the first plate 10 on its rear surface. The second plate 11 has a second length L2 and a second width W2, with the second length L2 larger than the second width W2. Usually, the second plate is rectangular. The second plate 11 in fact provide an attachment part for attaching an end cap to the board end.

[0061] In the illustrated embodiment, the second length L2 is parallel to first length L1. Thus, when cut perpendicularly, the first plate 10 and second plate 11 provide a T cross section.

[0062] The second plate 11 has a second length L2 which is smaller than the first length L1 of the first plate 10. The second plate 11 is positioned on the first plate 10 to leave at least a free end d4 free of the second plate 11. In the current embodiment the second plate 11 is positioned substantially central on the first plate first length L1. In this way, it leaves the same free end d4 on each end of the first plate 10. In this way it allows providing two similar end caps.

[0063] The end cap assembly further comprises an end plate 12 at an end of the first plate 10 and on its rear surface. The end plate 12 has a third length L3 and a third width W3. In the illustrated embodiment, end plates 12 are provided at both ends of the first plate 10. Again, this allows provision of two similar end caps once the end cap assembly is cut in two parts.

[0064] The third length L3 as illustrated is substantially parallel to the first length L1. The third length L3 is smaller than the free end d4 of the first plate 10. Furthermore, the end plate 12 is attached at or near a first side edge of the first plate 10. In the illustrated embodiment, the end plate 12 is provided at the first plate rear edge 20. This allows the end plate 12 to engage the thickened ledge 7 and to be fixed to the thickened ledge 7. Furthermore, (part of) the second plate 11 then engaged the rear board face 5.

[0065] In the current end cap assembly 2 in an embodiment there are ventilation provisions 16 provided. In the end cap assembly 2 the ventilation provisions are end cap ventilation grooves 16. These ventilation grooves 16 do not run all the way through the first plate 10 of the end cap assembly 2. Furthermore, the ventilation grooves 16 are positioned at the rear edge 20 (mounted out of sight) of the first plate 10 of the end cap assembly 2. Thus, when mounted on the end of a board 1, the ventilation groove 16 provides a ventilation opening that is only visible from the rear face of the board 1. Thus when the board 1 is mounted, the ventilation openings provided by the ventilation grooves 16 are not visible. The ventilation groove 16 provides a ventilation opening at the rear edge 20 of the end cap first plate 10. Furthermore, it provides a ventilation channel fluidly connecting the ventilation opening with the inside of a corresponding longitudinal chamber 3 of the board 1. Furthermore, the ventilation grooves 16 continue under the second plate 11 and here also under the third plate 12. Figures 2A-2D illustrate this.

[0066] The position of the ventilation grooves 16 matches the chambers 3. Size and frequency of ventilation grooves 16 are selected such that each hollow chamber 3 is ventilated.

[0067] In an embodiment, the front side 18 of the first plate 10 comprises a surface structure, like a wood grain structure.

[0068] The assembly can in an embodiment used as follows in a method for providing a board end with an end cap. Often, such a broad is used in a bargeboard. A board 1 and an end cap assembly 2 that is symmetric as described above are provided. An end of the board is cut at an angle of between 80 and 50 degrees with respect to the longitudinal axis of the board 1 (angle indicated with β). This provides a slanted end with a length equal to board diameter / cos (α) or a length equal to board diameter / sin (β). Next, the end cap assembly is cut at a first end cap length equal to the slanted end length. The end plate 12 is fixed to the thickened board ledge 7 and the second plate remaining end is fixed to the board rear face 5.

[0069] Figure 4 shows the end cap assembly 2 in longitudinal view. In this embodiment, both the second plate 11 and the end plate 12 are at a respective angle δ, ε with respect to the first plate 10. These angles may be 90 degrees, but tests showed that making this angle a little smaller than 90 degrees would press the first plate onto the board end. It was found that making these angles more than 85 degrees provided sufficient pressure. In particular, an angle of more than 87 degrees already provided sufficient pressure. Please note that it may also be possible to make either one of these angles smaller than 90 degrees.

[0070] In figures 5A and 5B such board ends are illustrated, showing two different barge boards. In this example, the board ends are cut along slanted lines. And providing top angles This slanted line in figure 5A has an angle α with respect to the transverse direction of the board or an angle β with respect to the longitudinal direction of the board. When mounting the board on a roof edge, in some embodiments it is used as a fascia board. In particular, the board can be used as bargeboard or rake fascia ("windveer"), where it is usually attached to each projecting gable of a roof. Often, this is used on a gable roof. The gable roof thus has a pitch angle γ, and the angle β with the longitudinal usually is half that pitch angle γ and the angle β can for instance be between 30 degrees and 70 degrees. In embodiments where the board end is slanted as illustrated, the end cap assembly can easily be used for producing at least one end cap for such a board end. If the length of the first plate is selected long enough, the end cap assembly can provide an end can for two slanted board ends. Figure 5B shows a particular example where the bargeboards have different angle. At each board end, an end cap 2 is mounted. In some instances, one end cap assembly 2 can be used for producing 2 end caps 2, and for very small angels like angle β' and the required end cap length is relatively large with respect to the board width, one end cap assembly 2 is used for producing one end cap 2. According to the requirements, either one end or the opposite end of the end cap assembly can be removed.

[0071] It will also be clear that the above description and drawings are included to illustrate some embodiments of the invention, and not to limit the scope of protection. Starting from this disclosure, many more embodiments will be evident to a skilled person. These embodiments are within the scope of protection and the essence of this invention and are obvious combinations of prior art techniques and the disclosure of this patent.Reference numbers

[0072] 1 hollow chamber extrusion board 2 end cap / end cap assembly 3 hollow chambers 4 board outer surface or board front face 5 building-directed board surface or board rear face 6 mounting rail 7 board ledge 10 First plate 11 Second plate or board mounting plate 12 End plate 13 Second plate mounting holes 14 End plate mounting holes 15 End plate adjustment groove 16 Ventilation groove 17 first plate rear surface 18 first plate front surface 19 first plate front edge 20 first plate rear edge W1 first plate width W2 second plate width W3 end plate width L1 first plate length L2 second plate length L3 end plate length d1 board thickness d2 Sum of board thickness and board ledge thickness d3 second plate spacing d4 first plate free end α α' α" board end angle β β' board end angle with respect to board longitudinal axis or board length γ barge top angle ε end plate angle δ second plate angle

Examples

Embodiment Construction

[0048]As mentioned in the background of the invention, the current invention relates end caps 2 for extrusion boards 1. These extrusion boards 1 have at least one longitudinal board chamber 3 or hollow chamber 3, a board front face 4 and a board rear face 5, and a board cross section. Figures 1A and 1B shows such a cross section, here perpendicular to the board longitudinal axis.

[0049]In this example, the board end has an angle α of 0 degrees with respect to a transverse line or an angle β of 90 degrees with the longitudinal direction. i.e., the boards are cut straight. When mounting the board on a roof edge, in some uses it is used as a fascia board. In particular the board can be used as bargeboard or rake fascia ("windveer"), where it is usually attached to each projecting gable of a roof. Often, this is used on a gable roof. The gable roof thus has a pitch with pitch angle γ, and the angle β with the longitudinal usually is half the pitch angle γ which angle β can be between 30 ...

Claims

1. An assembly comprising: a hollow chamber extrusion board (1) for mounting on an end of a roof edge, having at least one longitudinal hollow board chamber (3), a board width, a board front face (4) and a board rear face (3), a board cross section, and having a board ending, and an end cap (2) assembly for providing end caps for attaching to the board endings, the end cap (2) assembly comprising: - a first plate (10) having a first length (L1) and a first width (W1), with the first length (L1) larger than the first width (W1), the first plate (10) having a rear surface configured to engage the board ending and a front surface at the opposite side of the rear surface; - a second plate (11) attached substantially perpendicular to the first plate (10) on its rear surface, having a second length (L2) and a second width (W2), with the second length (L2) larger than the second width (W2), the second length (L2) parallel to first length (L1) and the second length (L2) smaller than the first length (l1), the second plate (11) positioned on the first plate (10) to leave at least a free end (d4) free of the second plate (11), and - an end plate (12) at an end of the first plate (10) and on its rear surface, the end plate (12) having a third length (L3) and a third width (W3), with the third length (L3) substantially parallel to the first length (L1) and smaller than the free end, and the end plate attached at or near a first side edge of the first plate (10), and with the first length (L1) at least twice the board width.

2. The assembly according to claim 1, wherein the end cap assembly (2) comprises two end plates (12), at least one end plate (12) at or near each end of the first plate (10), in particular wherein the second plate (11) is positioned lengthwise substantially centrally on the first plate (10), in particular providing equal free ends (d4) at both ends of the first plate (10).

3. The assembly according to any one of claims 1 or 2, wherein the second plate (11) is provided on the first plate (10) between the opposite length sides of the first plate (10), in particular wherein the second plate has at least 25% of the width (W1) at each side of the length (L2) of the second plate, preferably at least 35% of the width (W1).

4. The assembly according to any one of the preceding claims, wherein the end cap assembly (2) is symmetrical, having opposite ends provided with end plates (12), in particular allowing the end can assembly to be cut into two end caps each having an end plate (12).

5. The assembly according to any one of the preceding claims, wherein the board (1) comprises a board ledge (7) along a side of the board (1), usually the side which when the board is fixed to a building is an underside, usually visible, the board ledge (7) providing a thickened ledge (7) and said first plate width (W1) substantially matches a sum of the board thickness (d1) and the thickness of the board ledge (7), wherein in particular the board (1) has a thickened ledge (7) extending from the rear surface (5) of the board (1), in particular the thickened ledge has a thickness, of 3-15 mm from the rear surface (5) of the board (1), more in particular additionally the board ledge (7) has a width of 3-20 mm, in particular 5-10 mm, in particular the board (1) having a thickness (d1) of 3-25 mm, in particular 5-20 mm, specifically 5-10 mm.

6. The assembly of claim 5, wherein the end plate (12) is provided to engage the board ledge (7) when the end cap is mounted to a board end and the second plate (11) is positioned on the first plate (10) for when mounted engaging the rear surface of the board (1) with the outer edge of the first plate (10) aligning the front surface of the board (1) and the rear edge of the first plate (10) aligned with the outer end of the thickened ledge (7), in particular the end plate (12) is provided along the rear edge of the first plate (10) and the second plate (11) is provided spaced a second plate distance (d1) from the rear edge of the first plate (10) for allowing fixing the second plate (11) to the rear surface of the board (1) and aligning the front edge of the first plate (10) with the front surface of the board (1).

7. The assembly according to any one of the preceding claims, wherein the second plate (11) comprises at least two holes (13) for mechanical attachment to the board (1), in particular wherein the second plate (11) comprises a plurality of holes (13) for mechanical attachment to the roof edge, preferably wherein the holes (13) form a substantially straight line parallel to length (L2), preferably wherein the distance between the holes (13) is 50-75 mm, preferably 55-70 mm, more preferably 60-65 mm, and / or wherein said second plate is provided with at least four holes (13) distributed along a length of the second plate (11).

8. The assembly according to any one of the preceding claims, wherein the at least one end plate (12) comprises at least one hole (14) for mechanical attachment to the board (1), in particular wherein the at least one end plate (12) comprises at least two holes (14) for mechanical attachment to the roof edge, preferably wherein the holes (14) form a straight line parallel to length l3, preferably wherein the distance between the holes (h3) is 5-25 mm, preferably 10-22 mm, more preferably 13-19 mm.

9. The assembly according to any one of the preceding claims, wherein the at least one end plate (12) is configured to allow breaking off at least part of the said at least one end plate (12), in particular the at least one end plate (12) has a weakening line (15) for allowing said braking off, more in particular said weakening line (15) being slanted ending at or near an end of the first plate (10) at of near the first plate (10), more in particular the at least one end plate (12) comprises at least two hole (14) for mechanical attachment to the board (1), with at least one hole (14) at each side of the weakening line (15).

10. The assembly according to any one of the preceding claims, wherein the first plate (10) comprises at least one ventilation groove (16) in its rear surface for aeration and / or ventilation of the at least one longitudinal hollow board chamber (3), in particular wherein the first plate (10) comprises a plurality of ventilation grooves (16) in the first plate (10) for aeration and / or ventilation of the at least one longitudinal hollow board chamber (3), preferably wherein the ventilation grooves (16) are aligned with the hollow board chambers (3) of the board (1), preferably wherein the distance between the ventilation grooves (16) is 10-30 mm, preferably 15-25 mm, more preferably 18-22 mm, and / or wherein said at least one ventilation groove (16) starts at a first plate side and continues under said second plate (11).

11. The assembly according to any one of the preceding claims, wherein the first plate (10) has a length (L1) of at least twice a width of the board (1), and / or wherein the first plate (10) has a length (L1) of 500-900 mm, preferably 600-800 mm, more preferably 650-750 mm, and / or wherein the first plate (10) has a width (W1) of at least a board thickness (d1), in particular at least board thickness including a board ledge (d2), in particular substantially a board thickness including a board ledge (d2), and / or wherein the first plate (10) has a width (W1) of 5-50 mm, preferably 10-35 mm, more preferably 15-25 mm, and / or wherein the second plate (11) has a length (L2) of at least a board width, and / or wherein the second plate (11) has a length (L2) of 300-800 mm, preferably 400-700 mm, more preferably 500-600 mm, and / or wherein the second plate (11) has a width (W2) of 4-50 mm, preferably 9-30 mm, more preferably 14-20 mm, and / or wherein the at least one end plate (12) has a length (L3) of 8-45 mm, preferably 15-35 mm, more preferably 20-30 mm, and / or wherein the at least one end plate (12) has a width (W3) of 3-25 mm, preferably 6-20 mm, more preferably 9-15 mm, and / or wherein the distance between a length end of the second plate (11) and a nearest at least one end plate length end is 5-75 mm, preferably 15-56 mm, more preferably 25-55 mm, most preferably 35-45 mm.

12. An end cap assembly comprising all the features of the end cap assembly recited in any one of the preceding claims.

13. A kit of parts comprising the board and an end cap assembly from the assembly of any one of the preceding claims.

14. A method of providing a board, in particular a bargeboard, with an end cap, comprising: - providing a board (1) and an end cap assembly (2) of an assembly of any one of the preceding claims 1-11; - providing the board (1) with a first board end at an angle β with the longitudinal direction of the board (1) of from 90 to 30 degrees or from 90 to -30 degrees; - cutting the end cap assembly (2) into parts providing end caps providing a first end cap matching the first board end, and - attaching the first end cap to the first board end, comprising fixing its second plate (11) to the rear surface of the board (1).

15. The method of claim 14, wherein the board (1) comprises a or the thickened ledge along one side, and wherein the attaching further comprises fixing the end plate (12) of the first end cap to a rear surface of the thickened ledge (7).

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