An apparatus for transporting a load

Abstract

An apparatus (100) for transporting a load including: a main body (110) including a first end (112) and an opposite second end (114), a load connection device (130) at the first end of the main body, a first ground engaging wheel (140) at the first end of the main body and closer to the second end of the main body than the load connection device; a second ground engaging wheel (150) positioned closer to the second end of the main body than the first ground engaging wheel; a motor (160) supported on or by the main body, the motor being drivingly connected to the second ground engaging wheel (150) so as to rotate the wheel and move the apparatus over a ground surface, wherein the first ground engaging wheel (140) is moveable relative to the main body (110) between a deployed condition in which the first ground engaging wheel engages the ground surface and a retracted condition in which the first ground engaging wheel is spaced from the ground surface.

Description

[0001] AN APPARATUS FOR TRANSPORTING A LOAD

[0002] FIELD

[0003] This invention relates to an apparatus fortransporting a load.

[0004] BACKGROUND

[0005] Load moving apparatus are used to move loads which may be considered to be too heavy to be safely moved by a human without assistance. In general, the load moving apparatus may be used to move many different loads, either by pushing or pulling. The load moving apparatus may be used to move a plurality of identical loads, such as a large number of heavy boxes of identical size and weight. In other examples, the load moving apparatus may be used to move a plurality of dissimilar loads, such as a large number of boxes of differing size and weight. Load moving apparatus may also be used to move loads which are very heavy, such as steel containers holding many goods, large machinery or moveable installations within factories. Such apparatus typically include a ground engaging wheel or wheels which are driven by an electric motor or by respective electric motors to effect said movement.

[0006] In orderto ensure efficient drive, pulling or pushing, it is desirable to transmit some of the weight of the load to be moved on to the ground engaging wheel(s), to ensure a good grip with the ground surface during movement. The apparatus is therefore connectable to the load so as to move it and so as to transmit through said connection some of the weight of the load to be moved on to the ground engaging wheel(s) of the apparatus. The more weight that is transferred, the greater the frictional force generated at the interface between the ground engaging wheel(s) and the ground, thus improving traction and moving efficiency.

[0007] In prior art apparatus, the driven or driveable wheel(s) is positioned adjacent or close to the part or end of the apparatus which connects to the load, such that weight transfer to the ground engaging wheel(s) is more or most efficient. Such devices have other support wheels which are not driven or drivable. In such apparatus, a handle (often referred to as a tiller arm) with which the user may steer or operate the apparatus is provided at an opposite end of the apparatus to the part or end of the apparatus which connects to the load.

[0008] In orderto provide said connection to the load to be moved, some prior art apparatus are provided with a connecting device at a front end thereof with a coupling which is moveable in a generally vertical direction (towards and away from the ground surface) and is adapted to engage and bear a portion of the weight of the load to be transported. Such a device may be manually moveable in the

[0009] H 16497 WOvertical direction and may be moveable by means of an appropriate drive mechanism, e.g. a hydraulic piston / cylinder arrangement.

[0010] BRIEF DESCRIPTION OF THE INVENTION

[0011] According to one aspect of the present disclosure, we provide an apparatus fortransporting a load including:

[0012] a main body, the main body including a first end which is use is positioned adjacent the load to be transported and a second end generally opposite the first end,

[0013] a load connection device connected to or supported by the main body at the first end thereof for providing a connection to a load to be transported, preferably wherein said connection device is moveable in a generally vertical direction (e.g. towards and away from the ground surface) and is adapted to engage and bear a portion of the weight of the load to be transported,

[0014] a first ground engaging wheel positioned at or towards the first end of the main body and closerto the second end of the main body than the load connection device, said first ground engaging wheel being supported for rotation about a generally horizontal axis;

[0015] a second ground engaging wheel positioned closer to the second end of the main body than the first ground engaging wheel, said second ground engaging wheel being supported for rotation about a generally horizontal axis;

[0016] a motor supported on or by the main body, the motor being drivingly connected to the second ground engaging wheel so as to rotate the wheel and move the apparatus over a ground surface,

[0017] wherein the first ground engaging wheel is moveable relative to the main body between a deployed condition in which the first ground engaging wheel engages the ground surface and a retracted condition in which the first ground engaging wheel is spaced from the ground surface.

[0018] The apparatus may include at least two operational conditions, a first condition wherein a load is connected to the apparatus and a second condition wherein a load is not connected to the apparatus, and wherein the first condition corresponds to the deployed condition of the first ground engaging wheel and wherein the second condition corresponds to the retracted condition of the first ground engaging wheel.

[0019] In the deployed condition of the first ground engaging wheel, no other portion of the apparatus may be positioned between the second ground engaging wheel and the load connection device engages or is engageable with the ground surface.

[0020] When the apparatus is connected to a load, no other portion of the apparatus may be positioned between the second ground engaging wheel and the load connection device engages or is engageable with the ground surface.

[0021] H 16497 WOThe motor for driving the second ground engaging wheel may include a rotational axis which extends generally upwardly away from the ground surface.

[0022] The rotational axis of the motor may intersect or lie close to the rotational axis of the second ground engaging wheel.

[0023] When the first ground engaging wheel is in its deployed condition, the rotational axis of the motor driving the second ground engaging wheel may be inclined at an angle to a plane perpendicular to the ground engaging surface.

[0024] The rotational axis of the motor driving the second ground engaging wheel may be inclined away from the first end of the main body.

[0025] When the first ground engaging wheel is in its retracted condition, the rotational axis of the motor driving the second ground engaging wheel may be perpendicular or substantially perpendicular to the ground engaging surface.

[0026] Movement of the first ground engaging wheel between its deployed and retracted conditions may be along a plane A.

[0027] The plane A may be inclined at an angle relative to the rotational axis of the motor driving the second ground engaging wheel.

[0028] The axis of rotation of the first ground engaging wheel may remain parallel relative to the plane A as it moves between its deployed and retracted conditions.

[0029] The first ground engaging wheel may be supported by a support part having a portion which extends downwardly from the main body towards the ground surface and a portion which extends forwarding towards the load connection device, preferably the axis of rotational of the first ground engaging wheel may be positioned closer to the load connection device than the downwardly extending portion of the support part.

[0030] The load connection device may include a first load engaging member for engaging with a part of the load to be moved and a second load engaging member which may be positioned further away from the ground engaging surface than the first load engaging member, said second load engaging member being moveable between a deployed condition and a retracted condition and vice versa, wherein in the deployed condition the second load engaging member may extend over a part of the load to be moved.

[0031] H 16497 WOThe second load engaging member may be pivotally moveable between its deployed and retracted conditions about an axis which is substantially parallel with the axis of the first and / or second ground engaging wheels.

[0032] The second load engaging member may be biased towards its deployed condition, e.g. by a biasing member.

[0033] The load connection device may include a sensor which senses when the load connection device is engaged with a part of the load to be moved (e.g. when the second load engaging member is in its deployed condition), preferably wherein the sensor is an induction sensor.

[0034] The sensor may be provided on or supported by the second load engaging member.

[0035] The first ground engaging wheel may be only moveable from its deployed condition to its retracted position if the sensor senses that the load connection device is fully engaged with the part of the load to be moved.

[0036] When the load connection device engages, in use, with the part of the load to be moved, the second engaging member may be moved passively from its deployed condition to its retracted condition.

[0037] The apparatus may include a device for moving the second load engaging member to its retracted condition, preferably wherein said device may include a hydraulically operated piston or the like, more preferably wherein said device includes a single acting hydraulically operated piston.

[0038] The apparatus may include a handle which serves to provide a user graspable handle to control the direction of the second engaging wheel relative to the main body and for controlling the motor, said handle being connected to the main body and being rotatable relative to the main body about an axis B which extends generally upwardly away from the ground surface, wherein the axis B may be parallel or substantially parallel with an axis of rotation of the motor.

[0039] The axis B may be positioned closer to the second end of the main body than the axis of the motor.

[0040] A plane C may extend vertically and generally centrally through the apparatus between the first and second ends of the main body and wherein the axis B and the axis of the motor may extend through the plane C.

[0041] The axis B and the axis of the motor may be spaced by a distance <150mm, preferably <140mm, more preferably at or about 133mm.

[0042] H 16497 WOAccording to another aspect of the present disclosure, we provide an apparatus for transporting a load including:

[0043] a main body, the main body including a first end which is use is positioned adjacent the load to be transported and a second end generally opposite the first end,

[0044] a load connection device connected to or supported by the main body at the first end thereof for providing a connection to a load to be transported,

[0045] a first ground engaging wheel, said first ground engaging wheel being supported for rotation about a generally horizontal axis;

[0046] a second ground engaging wheel being supported for rotation about a generally horizontal axis;

[0047] a motor supported on or by the main body, the motor being drivingly connected to the second ground engaging wheel so as to rotate the wheel and move the apparatus over a ground surface,

[0048] wherein the second ground engaging wheel includes a ground engaging circumferentially extending surface with:

[0049] a central region which is parallel with the axis of rotation of the second wheel, a first lateral region positioned to one side of the central region, said first lateral region being inclined relative to the axis of rotation of the second wheel and upwardly away from the ground surface as it extends away from the central region, and

[0050] a second lateral region positioned to an opposite side of the central region, said second lateral region being inclined relative to the axis of rotation of the second wheel and upwardly away from the ground surface as it extends away from the central region.

[0051] The first and second lateral regions may be inclined at an angle of <10 degrees relative to the axis of rotation of the second wheel.

[0052] The first and second lateral regions may be inclined at an angle of <7.5 degrees relative to the axis of rotation of the second wheel.

[0053] The first and second lateral regions may be inclined at an angle of 5 degrees or <5 degrees relative to the axis of rotation of the second wheel.

[0054] The apparatus may include at least two operational conditions, a first condition wherein a load connected to the apparatus and a second condition wherein a load not connected to the apparatus.

[0055] The motor for driving the second ground engaging wheel may include a rotational axis which extends generally upwardly away from the ground surface and wherein in the second condition the rotational axis of the motor may be inclined at an angle to a plane perpendicular to the ground

[0056] H 16497 WOengaging surface, and wherein said angle may be the same or substantially the same as the angles of inclination of the first and second lateral regions of the second ground engaging wheel relative to the axis of rotation of the second wheel, preferably wherein the rotational axis of the motor driving the second ground engaging wheel may be inclined away from the first end of the main body.

[0057] The apparatus may include a plurality of said first ground engaging wheels, preferably two of said first ground engaging wheels.

[0058] The at least two first ground engaging wheels may be spaced from each other at or near opposing sides of the main body.

[0059] The apparatus may include two first ground engaging wheels and one second ground engaging wheel, with the three wheels being positioned in a triangle configuration.

[0060] The apparatus may include one or more third ground engaging, said third ground engaging wheel(s) being positioned further away from the first end of the main body than the second ground engaging wheel, preferably wherein a pair of third ground engaging wheels are provided, and preferably still wherein the third ground engaging wheels remain in contact with the ground surface during the first and second operational conditions of the apparatus.

[0061] According to another aspect of the present disclosure, we provide an apparatus for transporting a load including:

[0062] a main body, the main body including a first end which is use is positioned adjacent the load to be transported and a second end generally opposite the first end,

[0063] a load connection device connected to or supported by the main body at the first end thereof for providing a connection to a load to be transported, preferably wherein said connection device is moveable in a generally vertical direction (e.g. towards and away from the ground surface) and is adapted to engage and bear a portion of the weight of the load to be transported, and

[0064] one or more ground engaging wheels positioned on the main body being supported for rotation about a generally horizontal axis,

[0065] wherein the load connection device includes a first load engaging member for engaging with a part of the load to be moved and a second load engaging member which is positioned further away from the ground engaging surface than the first load engaging member, said second load engaging member being moveable between a deployed condition and a retracted condition and vice versa, wherein in the deployed condition the second load engaging member extends over a part of the load to be moved,

[0066] H 16497 WOwherein the second load engaging member is pivotally moveable between its deployed and retracted conditions about an axis which is substantially parallel with the axis of the ground engaging wheel(s), and

[0067] wherein the second load engaging member is biased towards its deployed condition, e.g. by a biasing member.

[0068] The load connection device may include a sensor which senses when the load connection device is engaged with a part of the load to be moved (e.g. when the second load engaging member is in its deployed condition), preferably wherein the sensor is an induction sensor.

[0069] The sensor may be provided on or supported by the second load engaging member.

[0070] The apparatus may be configured to permit movement thereof only if the sensor senses that the load connection device is fully engaged with the part of the load to be moved.

[0071] When the load connection device engages, in use, with the part of the load to be moved, the second engaging member may be moved passively from its deployed condition to its retracted condition.

[0072] The apparatus may include a device for moving the second load engaging member to its retracted condition, preferably wherein said device includes a hydraulically operated piston or the like, more preferably wherein said device includes a single acting hydraulically operated piston.

[0073] BRIEF DESCRIPTION OF THE FIGURES

[0074] In orderthatthe present disclosure may be more readily understood, preferable embodiments thereof will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0075] FIGURE 1 is a side view of an apparatus of the present disclosure;

[0076] FIGURE 2 is a rear view of the apparatus of figure 1 ;

[0077] FIGURE 3 is a side view of the apparatus of figure 1;

[0078] FIGURE 4 is a front view of the apparatus of figure 1;

[0079] FIGURE 5 is a top view of the apparatus of figure 1 ;

[0080] FIGURE 6 is an underside view of the apparatus of figure 1 ;

[0081] H 16497 WOFIGURE 7 is a side view of the apparatus of figure 1 in a second operational condition, showing some internal components to its main body;

[0082] FIGURE 8 is a further side view of the apparatus in the second operational condition, showing some internal components to its main body;

[0083] FIGURE 9 is a perspective view of a load connection device of the present disclosure;

[0084] FIGURE 10 is a perspective view of a part of a load to be moved which is engaged by the connection device of figure 9;

[0085] FIGURE 11 is a side view of the load connection device of figure 9 during its movement towards the part of the load of figure 10;

[0086] FIGURE 12 is a perspective view of a detail of the load connection device of figure 9;

[0087] FIGURES 13 through 16 are side views of the load connection device and part of the load during sequential stages of connection therebetween;

[0088] FIGURE 17 is a side view of the apparatus with the load connection device in the same stage of connection as that of figure 16;

[0089] FIGURE 18 is a side view of the apparatus of figure 17 during a subsequent operational movement where first grounding engaging wheels thereof are moved away from a ground surface;

[0090] FIGURE 19 is a further side view of the apparatus showing the direction of movement of the first ground engaging wheels prior to disconnection of the load from the apparatus;

[0091] FIGURE 20 is a side view of the apparatus showing the first ground engaging wheels engaging with the ground surface after having been lowered;

[0092] FIGURE 21 is a side view of the load connection device and the part of the load to be moved during a first disconnection step therebetween;

[0093] FIGURE 22 is a perspective view of a device for moving a component part of the load connection device to a retracted condition;

[0094] H 16497 WOFIGURE 23 is a side view of the load connection device being lowered towards the ground surface away from the part of the load during a subsequent disconnection step to figure 21 ;

[0095] FIGURE 24 is a side view of the load connection device being moved laterally away from the part of the load during a subsequent disconnection step to figure 23;

[0096] FIGURE 25 is a side view of the apparatus showing more detailed components of a motor thereof for driving a second ground engaging wheel and details of a support for the first ground engaging wheels;

[0097] FIGURE 26 is a further side view of the apparatus showing the orientation of the motor for driving the second ground engaging wheel;

[0098] FIGURE 27 is a side view of the apparatus and a load connected thereto with the apparatus shown in its first operational condition;

[0099] FIGURE 28 is a side view of the apparatus connected to a load prior to the first ground engaging wheels thereof being moved away from the ground surface;

[0100] FIGURE 29 is a rearview of the apparatus showing details of the second ground engaging wheel;

[0101] FIGURE 30 is a detailed view of a lower portion of the second ground engaging wheel of the apparatus; and

[0102] FIGURE 31 is a cross-sectional view of a lower portion of the second ground engaging wheel.

[0103] DETAILED DESCRIPTION OF THE DISCLOSURE

[0104] Referring to the figures these show an apparatus 100 fortransporting a load 500. The apparatus has a main body 110 with a first, front, end 112 which in use is positioned adjacent the load 500 to be transported. Opposite the first end 112 is a second, rear, end 114 which is generally where a user would stand to control the apparatus 100 during use. The main body 110 includes left and right sides 115, 116 and a top 117.

[0105] In the present disclosure the apparatus 100 includes a handle 300 which serves to provide a user graspable handle to control the direction of the apparatus 100 in use. Further details of the handle 300 will be described later. It should be noted that whilst the embodiment shown in the figures includes a handle 300, embodiments are envisaged where the apparatus 100 does not have a user

[0106] H 16497 WOgraspable handle but is rather remote controlled or automatically controlled for and during its movement. The handle 300 is therefore optional, as desired, in certain embodiments.

[0107] The apparatus 100 includes a load connection device 130 which is connected to the main body 110 at the first end 112 thereof. The load connection device 130 provides a means for connecting to the load 500 to be transported. In some embodiments the connection device 130 is movable in a generally vertical connection, that is to say towards and away from the ground surface and is adapted to engage and bear with a portion of the weight of the load 500 to be transported. The load connection device 130 is slidably connected to the main body 110 by pair of hydraulic actuators 210 (see figures 25 and 26), although there may be only one such actuator. The actuators 210 effectively provide for sliding or translational movement of the load connection device 130 towards and away from the ground surface along a plane A.

[0108] The apparatus 100 includes various wheels for supporting the main body 110 relative to the ground surface. The apparatus 100 includes a pair of first ground engaging wheels 140a, 140b which are positioned spaced apart from each other at or towards the first end 112 of the main body 110. As can be seen, especially from figure 1 , the first ground engaging wheels 140a, 140b are positioned closer to the second end 114 of the main body 110 than the load connection device 130. Both wheels 140a, 140b are supported for rotation about a common horizontal axis 141. In embodiments the axes of rotation of the first ground engaging wheels may not be common, e.g. coaxial. In the present disclosure, the axis 141 is fixed relative to the main body 110 in the sense that the orientation of the axis 141 are not able to swivel relative to the apparatus main body 110. Embodiments are envisaged where they are able to swivel, however, although it is preferred that they do not swivel as this assists in better control of the movement of the apparatus 100.

[0109] The apparatus 100 also includes a second ground engaging wheel 150 which is positioned rearwardly of the first ground engaging wheels 140a, 140b and closer to the second end 114 of the main body 110 than the positioning of the first ground engaging wheels 140a, 140b to the second end 114. The second ground engaging wheel 150 is supported for rotation about a generally horizontal axis 151 and is driven by a motor 160, through appropriate gearing, e.g. crown gears, which is supported by and within the main body 110. The motor 160 is drivingly connected to the second ground engaging wheel 150 so as to rotate the wheel 150 and move the apparatus 110 over the ground surface.

[0110] The motor 160 includes a rotational axis 161 , that being the axis of rotation of an output shaft of the motor 160. In embodiments the axis 161 extends generally upwardly away from the ground surface and away from the ground engaging wheel 150. In embodiments the rotational axis 161 of the motor 160 is positioned so as to intersect or lie close to the rotational axis 151 of the second ground engaging wheel 150. This is advantageous as it provides a compact construction for the

[0111] H 16497 WOapparatus. Embodiments are, however, envisaged where the motor is directly connected to the wheel 150 or connected by way of different gearing or transmission.

[0112] Angular positioning of the wheel 150 relatively to the main body 110, so as to effect steering of the apparatus 100, is achieved by a further motor which, by way of gearing 163, 164 rotates the wheel 150 about the axis 161.

[0113] When the ground engaging wheels 140a, 140b are in their deployed condition, as will be seen also from figure 7 and 8, the rotational axis 161 is inclined away from the first end 112 of the main body 110, e.g. towards the handle 300, at an angle a to a plane 162. The plane 162 is perpendicular to the ground engaging surface and extends vertically through the axis 151 of the wheel 150. Details of the preferred values of the angle a will be discussed later.

[0114] As shown in particular in figure 26, when the ground engaging wheels 140a, 140b are in their retracted condition (e.g. when connected to a load) the rotational axis 161 of the motor 160 has move to a position which is perpendicular or substantially perpendicular to the ground surface, thus lying coincident with the plane 162. This movement occurs because the main body 110 of the apparatus 100 pivots forwardly about the axis 151 of the second ground engaging wheel. This movement will be discussed later.

[0115] The first ground engaging wheels 140a, 140b are movable relative to the main body 110 between deployed and retracted conditions. In the deployed condition (see figures 1 , 3 and 4 at least) the first ground engaging wheels 140a, 140b engage the ground surface so as to support the main body 110. In the retracted condition (see figures 18 and 19, at least) the first ground engaging wheels 140a, 140b are spaced from the ground surface. Details of the benefits and functionality of this will be discussed later.

[0116] As shown in the figures, the apparatus 100 advantageously includes a pair of third ground engaging wheels 180a, 180b which are positioned rearwardly of the second ground engaging wheel 150, at a position forwardly of where a user would stand to control the apparatus 100 during use. In embodiments the third ground engaging wheels are able swivel relative to the apparatus main body 110.

[0117] The apparatus 100 has at least two operational conditions, a first condition which corresponds to a load being connected to the apparatus 100 and a second condition which corresponds to a load not being connected to the apparatus 100. In the second condition the apparatus 100 supported for movement on the ground surface by the first 140a, 140b, second 150 and third 180a, 180b ground engaging wheels. In the second condition, as will become apparent later, the apparatus 100 is supported mainly by the ground engaging wheel 150, with the first ground engaging wheels 140a,

[0118] H 16497 WO140b being spaced from the ground surface. In the first condition, the wheels 180a, 180b advantageously remain in contact with the ground surface during both the first and second operational conditions of the apparatus 100 and during movement between those operational conditions.

[0119] As will become apparent later, in the deployed condition of the first ground engaging wheels 140a, 140b, no other portion of the apparatus 100 positioned between the second ground engaging wheel 150 and the load connection device 130 engages with the ground surface. That is to say that only the first ground engaging wheels 140a, 140b engage the ground surface (in additional to the wheels 150, 180a, 180b). This can be seen in detail in figures 20, 25 and 28. When the apparatus 100 is connected to a load and with the first ground engaging wheels 140a, 140b in their retracted condition, no other portion of the apparatus 100 positioned between the second ground engaging wheel 150 and the load connection device 130 engages the ground surface. This can be seen in detail in figures 18, 26 and 27.

[0120] As can be seen in the figures, the first ground engaging wheels 140a, 140b are each supported by a structure which is connected to the main body 110 of the apparatus 100 such that they can be moved between their deployed and retracted conditions relative to the ground surface. In embodiments this is achieved by way of one or more hydraulic actuators 175 (they may be electronic or mechanically actuators, for examples) which effectively provide for sliding or translational movement of the first ground engaging wheels 140a, 140b towards and away from the ground surface along the plane A (see figures 25 and 26). When the apparatus 100 is not connected to a load and with the first ground engaging wheels 140a, 140b in their deployed condition, the plane A is perpendicular or substantially perpendicular to the ground surface. When the apparatus 100 is connected to a load and with the first ground engaging wheels 140a, 140b in their retracted condition, the plane A is inclined forwardly at an angle relative to a plane perpendicular or substantially perpendicular to the ground surface.

[0121] Referring to figure 25, each first ground engaging wheel 140a, 140b is supported by a support part 170 which at one end is connected to the hydraulic actuator 175. The support part 170 has an upper portion 170 which extends downwardly towards the ground surface where it is connected to a portion 172 which extends forwardly towards the load connection device 130. In embodiments the axis 141 rotation of the first ground engaging wheels 140a, 140b is positioned closer to the load connection device 130 than the downwardly extending portion 171 of the support part 170. In other words, the support part 170 when viewed from the side is substantially J or L-shaped. This positioning of the first ground engaging wheels 140a, 140b further forwardly provides for a more secure and stable platform with the first ground engaging wheels 140a, 140b and the second ground engaging wheel 150 being positioned in a stable triangle configuration. In the present

[0122] H 16497 WOdisclosure, the support parts 170 are connected to each other and movement by a hydraulic actuator 175.

[0123] As mentioned previously, the apparatus includes a handle 300 for providing a user graspable handle to control the direction of the apparatus 100 during its movement. In embodiments (and with reference particularly to figures 7 and 8) the handle 300 is connected to the main body 110 and rotatable relative to the main body 110 about an axis B which extends generally upwardly away from the ground surface. In embodiments the axis B is parallel or substantially parallel with an axis 161 of the motor 160. The handle 300 may also be articulated such that its remote end can be moved upwardly (and positioned above the main body 110, see figure 1) and downwardly so as to be positioned at a usable grasping height for a user.

[0124] In the present embodiment the handle 300 controls the rotational position of the wheel 150 relative to the main body 110. A sensor is provided within or on the main body which sensor the angular position of the handle 300 about the axis B. An output from this sensor is used to control the steering motor (and thus gearing 163, 164) to alter the angular position of the wheel 150. Thus, there is no direct mechanical connection between the handle 300 and the steering motor or the wheel 150. Of course, embodiments are envisaged where there could be such a mechanical connection to control the steering angle of the wheel 150.

[0125] As can be seen in figure 7, in embodiments the axis B is positioned closer to the second end 114 of the main body 110 than the axis 161. In embodiments, as best shown in figure 8, the axis B is spaced rearwardly from the axis 161 by a distance d. The distance d is advantageously minimised, bearing in mind the internal size of the components of the motor 150 and the various part associated with steering of the wheel 150, such that axis B and axis 161 are as close as possible to each other, preferably being spaced less than 150mm, preferably less than 140mm and most preferably at or about 133mm from each other. Preferably the axis 161 and B are positioned directly in line with each other in a plane C which extends vertically and generally centrally through the apparatus 100 between the first 112 and second 114 ends thereof. Advantageously positioning the axis B as close as possible rearwardly of the axis 161 and directly inline provides for an improved feel in terms of operation and steering of the apparatus 100 over a ground surface.

[0126] Referring particularly to figures 29 and 31 , these show the profile of the second ground engaging wheel 150. As can be seen, embodiments are envisaged where the second ground engaging wheel 150 includes a ground engaging circumferentially extending surface with a central region 153 which is parallel with the axis of rotation 151 of the wheel 150, and first 154 and second 155 lateral regions positioned either side thereof. The first lateral region 154 is inclined at an angle p relative to the axis of rotation 151 of the second wheel 150 and extends upwardly away from the ground surface as it extends away from the central region. In a similar fashion the second lateral

[0127] H 16497 WOregion 155 is inclined at an angle 0 relative to the axis of rotation 151 of the second wheel 150 and also extends upwardly away from the ground surface as it extends away from the central region 153. In preferred embodiments the angles p and 0 are equal or substantially equal to each other. In embodiments the angles 0 and p are inclined at an angle of less than 10°, preferably less than 7.5° and most preferably at or less than 5° relative to the axis 151.

[0128] In embodiments the angles p and 0 are the same or substantially the same as the angle a of inclination of the motor 160. Providing these angles of inclination means that the apparatus 110, whether in its first or second operational condition, is controllable intuitively by the user and thus has the same steering “feel”. In more detail, it has advantageously been found that providing these angles of inclination mean that the user does not experience any undesired upwardly / downwardly movement of the main body 110 when steering, irrespective of whether the apparatus 100 is in its first or second operational condition. Of course, embodiments are envisaged where the profile of the second ground engaging wheel 150 does not have any such inclined first 154 and second 155 lateral regions.

[0129] Referring now to figures 9 through 12, these show details of the load connection device which is connected to the first end 112 of the apparatus 110. The load connection device 130 has the function of providing a connection to the load 500 to be transported and to provide a secure connection thereto so as to rigidly or substantially rigidly hold the front end 112 of the main body 110 to the load 500 to be transported. A secure connection is required both to provide for accurately manoeuvring of the load 500 and so as to transmit through said connection some of the weight of the load 500 on to the driven ground engaging wheel 150 of the apparatus 100.

[0130] The load connection device 130 is configured for connection to a specifically shaped connection member 190 (see figure 10) which is connected to or provided on or as part of the load 500.

[0131] Typically, the connection member 190 is connected to a peripheral portion of the load and at a position easy accessible to the apparatus 100. An example location can be seen on figures 27 and 28 where the connection member 190 is connected to a lower frame of the load 500, which load is supported by a plurality of wheels 501 , 502. Essentially, as will become apparent, the connection member 190 and the load connection device 130 mate with each other and are held relative to each other to provide a rigid connection between the load and the apparatus 100.

[0132] In more detail, the connection member 190 includes a generally planar wall or plate 191 which is connected to the load 500 by way of suitable fasteners or the like (although it could be connected in any other suitable way), such that the plate 191 extends substantially vertically. Extending away from the plate 191 (and away from the load 500) is an upper extension 195 which at its free end 192 remote from the plate 191 extends downwardly to define a recess or channel 193 between the free end 192 and the load facing surface of the plate 191. This channel 193 is configured to

[0133] H 16497 WOreceive a part of the load connection device 130 as will be discussed later. A lowermost edge 194 of the plate 191 is configured to be received in a recess in the load connection device 130.

[0134] Referring to figures 9, 11 and 12, the load connection device 130 includes a first load engaging member 131 for receiving and engaging with the edge 194 of the plate 191. The load connection device 130 also includes a second load engaging member 132 which is positioned further away from the ground surface than the first load engaging member 131. The second load engaging member 132 is moveable, preferably pivotally moveable, between a deployed condition and a retracted condition and vice versa. In its deployed condition the second load engaging member extends over the upper extension 195.

[0135] In more detail, the connection device 130 is connectable to the main body 110 of the apparatus 100 by way of a fixing plate or fabrication 405 and suitable fasteners (or it may be permanently connected thereto).

[0136] The first load engaging member 131 is provided as an upwardly turned hook element or the like which extends forwardly away from the front end 112 and provides an elongate laterally extending channel 408 therein to receive the edge 194. The second load engaging member 132 is configured generally as a hook or latch element which is pivotably moveable about an axis 401 between its deployed and retracted conditions. The axis 401 is essentially parallel with the axes 141, 151. An upper portion 133 of the second load engaging member 132 is provided with a pair of spaced apart projection or hook members 402a, 402b which therebeneath define recesses 404a, 404b to receive the upper extension 195 of the member 190.

[0137] A substantially mid region of the second load engaging member 132, which mid region is positioned between the axis 401 and the hook members 402a, 402b is provided with a pair of spaced apart projections 411 a, 411 b which extend rearwardly towards the main body 110. These projections 411 a, 411 b provide a connection location by way of an axle 409 for a pair of springs 134a, 134b which at their opposite ends are connected to the fixing plate or fabrication 405. These springs 134a, 134b bias the second load engaging member 132 towards its deployed condition, that being the position shown in figure 11.

[0138] A portion of the connection device 130 positioned forwardly of the second engaging member 132 and above (but rearwardly) of the recess 408 is provided with an upwardly extending plate edge 407 which is configured to be received in the recess 193 of the member 190.

[0139] A lower portion of the second load engaging member 132, which lower portion is positioned at an opposite side of the axis 401 than the hook members 402a, 402b and closer to the ground surface, is provided with a pair of spaced apart projections 406a, 406b. These projections 406a, 406b

[0140] H 16497 WOsupport an axle 412 and thereby provide a connection to a hydraulic actuator 136 (see figure 22), which is most preferably a single acting hydraulic actuator. As shown in figure 22 the actuator 136 includes a piston 137 which engages with the axle 412 to cause the second load engaging member 132 to pivot to its retracted position (see figure 21) against the biasing force of the springs 134a, 134b.

[0141] The actuator 136 includes fluid passages 136a and 136b for controlling movement of the piston 137. Whilst in embodiments the device 136 is a single acting piston, embodiments are envisaged where it is a dual acting piston. Likewise, whilst the device 136 is a hydraulic actuator, a mechanical or electrical actuator may be used for moving the second load engaging member 132 to its retracted condition.

[0142] Advantageously, the connection device 130 includes a sensor 135 (positioned beneath the pair of spaced apart projection or hook members 402a, 402b), which senses when the member 190 and connection device 130 are fully engaged with each other. Whilst in embodiments the sensor is provided on the second load engaging member 132 it could be provided alternatively on the part 190. In embodiments movement of the first ground engaging wheels 140a, 140b from their deployed condition to their retracted condition may only be permitted if the sensor 135 senses that the load connection device 130 is fully engaged with the part 190. In embodiments the sensor is an induction sensor, but other sensors could be utilised.

[0143] Referring to figures 13 to 16, these show sequential connection of the load connection device 130 to the member 190. As can be seen in figure 13 as the two parts engage each other the hook members 402a, 402b are pivoted rearwardly towards the main body 110 against the force of the springs 134a, 134b. As the load connection device 130 is moved upwardly by the hydraulic actuators 210 (see the arrow in figure 14) the load connection device 130 slides relative to the member 190 until the position shown in figure 15 where the hook members 402a, 402b are positioned above the upper extension 195. Due to the biasing of the springs 134a, 134b, the hook members 402a, 402b pivot forwardly to the position shown in figure 16 where the hook members 402a, 402b extend over the upper extension 195. In this condition the connection device 130 and member 190 are rigidly connected to each other.

[0144] Referring to figures 21 , 23 and 24, disconnection of the load connection device 130 from the member 190 is achieved by actuation of the actuator 136, which applies a force to the axle 412 causing the hook members 402a, 402b to pivot rearwardly, again against the force of the springs 134a, 134b, until the hook members 402a, 402b are not extending over the upper extension 195. The load connection device 130 is then moved downwardly by the hydraulic actuators 210, sliding relative to the member 190 until the position shown in figure 23. The load connection device 130 can then be moved laterally away from the member 190 as shown in figure 24. As it does so,

[0145] H 16497 WOeither automatically or after a predetermined time period, the hydraulic actuator 136 permits the hook members 402a, 402b again to pivot forwardly under the force of the springs 134a, 134b.

[0146] As discussed earlier, the apparatus is configured such that the first ground engaging wheels 140a, 140b are moveable between deployed and retracted conditions. In the deployed condition (see figure 25 at least) the wheels 140a, 140b, together with the wheels 150 support the apparatus so that it can be manoeuvred, e.g. into position so as to connect to a load 500 to be moved. The retracted condition of the wheels 140a, 140b is only utilised once and after the load connection device is fully connected to the member 190 I load 500 (see figure 26 at least). Once connected to the load and with the wheels 140a, 140b in the retracted condition, the connection device 130 is moved upwardly by the hydraulic actuators 210 (see figures 25 and 26), either automatically or manually by a user. This causes the main body 110 to pivot forwardly about the axis 151 of the second ground engaging wheel 150.

[0147] This further upward movement of the connection device 130 transfers more of the weight of the load 500 to the apparatus 100. In this configuration a portion of the weight of the load 500 is transferred through the member 190, connection device 130 and main body 110 to the wheel 150 to increase the traction between the wheel 150 and the ground surface. Due to the rigid connection provided between the member 190 and the load connection device 130, the apparatus and its components are no longer supported by the first wheels 140a, 140b, but predominantly by the wheel 150.

[0148] A significant advantage of the apparatus of the present disclosure is that the handling of the apparatus 100 when connected to a load is similar to the handling of the apparatus / load combination. This is because controllable intuitively by the user and thus has the same steering “feel”. When the apparatus is not connected to a load, the steering is achieved by the wheel 150 with the wheels 140a, 140b following - in a similar way to the handling of a car. When the apparatus 100 is connected to the load 500, the wheels 140a, 140b are no longer engaging the floor surface, so instead the wheels 501 , 502 of the load 500 take their place and ensure that the apparatus / load combination handles in a similar way - again, to that of a car, with the wheel 150 driving movement and the wheels 501 , 502 of the load 500 following behind. In this way, steering of the apparatus / load combination is more intuitive of the user and therefore more accurate, meaning that manoeuvres can be conducted more efficiently, e.g. without multiple changes of direction.

[0149] In terms of order of operation, one example flow may be the following:

[0150] 1) Apparatus 100 is moved towards the load 500 until load connection device engages the member 190;

[0151] H 16497 WO2) Load connection device 130 is moved upwardly until the hook members 402a, 402b extending over the upper extension 195;

[0152] 3) Sensor 135 senses the device 130 and member 190 are connected to each other;

[0153] 4) Wheels 140a, 140b are moved towards their retracted condition;

[0154] 5) Load connection device 130 is moved further upwardly relative to main body (can be automatic or manual by user) to transfer more of the weight of the load 500 to the apparatus 100.

[0155] 6) Apparatus 100 is then moved by a user using the handle 300 to moved the apparatus / load combination to a desired location.

[0156] When it is desired to disconnect the apparatus 100 from the load 500, one example flow may be the following:

[0157] 1) Load connection device 130 is moved downwardly relative to main body (can be automatic or manual by user) to reduce the amount of weight of the load 500 which is being transferred to the apparatus 100;

[0158] 2) Wheels 140a, 140b are moved towards their deployed condition;

[0159] 3) After a predetermined time period or when it is sensed that the wheels 140a, 140b are in or near their deployed condition, the hook members 402a, 402b are moved by the actuator 136 to their retracted condition;

[0160] 4) Load connection device 130 is then moved further downwardly;

[0161] 5) Apparatus 100 is moved away from the load 500.

[0162] In examples, when the wheels 140a, 140b make initial contact with the ground surface, the actuator 175 will continue to drive the wheels 140a, 140b into the ground surface. This continuation of hydraulic pressure, perhaps for a few seconds causes fluid pressure to build up in an accumulator provided in the main body 110. This accumulated hydraulic pressure has the effect of automatically moving the wheels 140a, 140b to their fully deployed condition once the hook members 402a, 402b are moved by the actuator 136 to their retracted condition. This has the advantage of providing an automatic self-levelling of the apparatus 100 (from the position in figure 26 to the position in figure 25). This self-levelling of the apparatus 100 moves the axis 161 from a vertical position (perpendicular to the ground surface) to the inclined position, and ready again to connect to the same or a different load.

[0163] When used in this specification and claims, the terms "comprises" and "comprising" and variations thereof mean that the specified features, steps or integers are included. The terms are not to be interpreted to exclude the presence of other features, steps or components.

[0164] H 16497 WOThe invention may also broadly consist in the parts, elements, steps, examples and / or features referred to or indicated in the specification individually or collectively in any and all combinations of two or more said parts, elements, steps, examples and / or features. In particular, one or more features in any of the embodiments described herein may be combined with one or more features from any other embodiment(s) described herein.

[0165] Protection may be sought for any features disclosed in any one or more published documents referenced herein in combination with the present disclosure.

[0166] Although certain example embodiments of the invention have been described, the scope of the appended claims is not intended to be limited solely to these embodiments. The claims are to be construed literally, purposively, and / or to encompass equivalents.

[0167] H 16497 WO

Claims

CLAIMS1. An apparatus for transporting a load including:a main body, the main body including a first end which is use is positioned adjacent the load to be transported and a second end generally opposite the first end,a load connection device connected to or supported by the main body at the first end thereof for providing a connection to a load to be transported, preferably wherein said connection device is moveable in a generally vertical direction (e.g. towards and away from the ground surface) and is adapted to engage and bear a portion of the weight of the load to be transported,a first ground engaging wheel positioned at or towards the first end of the main body and closerto the second end of the main body than the load connection device, said first ground engaging wheel being supported for rotation about a generally horizontal axis;a second ground engaging wheel positioned closer to the second end of the main body than the first ground engaging wheel, said second ground engaging wheel being supported for rotation about a generally horizontal axis;a motor supported on or by the main body, the motor being drivingly connected to the second ground engaging wheel so as to rotate the wheel and move the apparatus over a ground surface,wherein the first ground engaging wheel is moveable relative to the main body between a deployed condition in which the first ground engaging wheel engages the ground surface and a retracted condition in which the first ground engaging wheel is spaced from the ground surface.

2. An apparatus according to claim 1 wherein the apparatus includes at least two operational conditions, a first condition wherein a load is connected to the apparatus and a second condition wherein a load is not connected to the apparatus, and wherein the first condition corresponds to the deployed condition of the first ground engaging wheel and wherein the second condition corresponds to the retracted condition of the first ground engaging wheel.

3. An apparatus according to claim 1 or 2 wherein in the deployed condition of the first ground engaging wheel, no other portion of the apparatus positioned between the second ground engaging wheel and the load connection device engages or is engageable with the ground surface.

4. An apparatus according to any preceding claim wherein, when the apparatus is connected to a load, no other portion of the apparatus positioned between the second ground engaging wheel and the load connection device engages or is engageable with the ground surface.

5. An apparatus according to any preceding claim wherein the motor for driving the second ground engaging wheel includes a rotational axis which extends generally upwardly away from the ground surface.H 16497 WO6. An apparatus according to claim 5 wherein the rotational axis of the motor intersects or lies close to the rotational axis of the second ground engaging wheel.

7. An apparatus according to claim 5 or 6 wherein when the first ground engaging wheel is in its deployed condition, the rotational axis of the motor driving the second ground engaging wheel is inclined at an angle to a plane perpendicular to the ground engaging surface.

8. An apparatus according to claim 7 wherein the rotational axis of the motor driving the second ground engaging wheel is inclined away from the first end of the main body.

9. An apparatus according to any one of claims 5 to 8 wherein when the first ground engaging wheel is in its retracted condition, the rotational axis of the motor driving the second ground engaging wheel is perpendicular or substantially perpendicular to the ground engaging surface.

10. An apparatus according to any preceding claim wherein movement of the first ground engaging wheel between its deployed and retracted conditions is along a plane A.

11. An apparatus according to claim 10 as dependent on any one of claims 5 to 9 wherein the plane A is inclined at an angle relative to the rotational axis of the motor driving the second ground engaging wheel.

12. An apparatus according to claim 10 or 11 wherein the axis of rotation of the first ground engaging wheel remains parallel relative to the plane A as it moves between its deployed and retracted conditions.

13. An apparatus according to any preceding claim wherein the first ground engaging wheel is supported by a support part having a portion which extends downwardly from the main body towards the ground surface and a portion which extends forwarding towards the load connection device, preferably wherein the axis of rotational of the first ground engaging wheel is positioned closer to the load connection device than the downwardly extending portion of the support part.

14. An apparatus according to any preceding claim wherein the load connection device includes a first load engaging member for engaging with a part of the load to be moved and a second load engaging member which is positioned further away from the ground engaging surface than the first load engaging member, said second load engaging member being moveable between a deployed condition and a retracted condition and vice versa, wherein in the deployed condition the second load engaging member extends over a part of the load to be moved.H 16497 WO15. An apparatus according to claim 14 wherein the second load engaging member is pivotally moveable between its deployed and retracted conditions about an axis which is substantially parallel with the axis of the first and / or second ground engaging wheels.

16. An apparatus according to claim 14 or 15 wherein the second load engaging member is biased towards its deployed condition, e.g. by a biasing member.

17. An apparatus according to claim 14, 15 or 16 wherein the load connection device includes a sensor which senses when the load connection device is engaged with a part of the load to be moved (e.g. when the second load engaging member is in its deployed condition), preferably wherein the sensor is an induction sensor.

18. An apparatus according to claim 17 wherein the sensor is provided on or supported by the second load engaging member.

19. An apparatus according to claim 17 or 18 wherein the first ground engaging wheel is only moveable from its deployed condition to its retracted position if the sensor senses that the load connection device is fully engaged with the part of the load to be moved.

20. An apparatus according to any one of claims 14 to 19 wherein, when the load connection device engages, in use, with the part of the load to be moved, the second engaging member is moved passively from its deployed condition to its retracted condition.

21. An apparatus according to any one of claims 14 to 20 wherein the apparatus includes a device for moving the second load engaging member to its retracted condition, preferably wherein said device includes a hydraulically operated piston or the like, more preferably wherein said device includes a single acting hydraulically operated piston.

22. An apparatus according to any preceding claim wherein the apparatus includes a handle which serves to provide a user graspable handle to control the direction of the second engaging wheel relative to the main body and for controlling the motor, said handle being connected to the main body and being rotatable relative to the main body about an axis B which extends generally upwardly away from the ground surface, wherein the axis B is parallel or substantially parallel with an axis of rotation of the motor.

23. An apparatus according to claim 22 wherein the axis B is positioned closer to the second end of the main body than the axis of the motor.H 16497 WO24. An apparatus according to claim 22 or 23 wherein a plane C extends vertically and generally centrally through the apparatus between the first and second ends of the main body and wherein the axis B and the axis of the motor extend through the plane C.

25. An apparatus according to claim 22, 23 or 24 wherein the axis B and the axis of the motor are spaced by a distance <150mm, preferably <140mm, more preferably at or about 133mm.

26. An apparatus fortransporting a load including:a main body, the main body including a first end which is use is positioned adjacent the load to be transported and a second end generally opposite the first end,a load connection device connected to or supported by the main body at the first end thereof for providing a connection to a load to be transported,a first ground engaging wheel, said first ground engaging wheel being supported for rotation about a generally horizontal axis;a second ground engaging wheel being supported for rotation about a generally horizontal axis;a motor supported on or by the main body, the motor being drivingly connected to the second ground engaging wheel so as to rotate the wheel and move the apparatus over a ground surface,wherein the second ground engaging wheel includes a ground engaging circumferentially extending surface with:a central region which is parallel with the axis of rotation of the second wheel, a first lateral region positioned to one side of the central region, said first lateral region being inclined relative to the axis of rotation of the second wheel and upwardly away from the ground surface as it extends away from the central region, anda second lateral region positioned to an opposite side of the central region, said second lateral region being inclined relative to the axis of rotation of the second wheel and upwardly away from the ground surface as it extends away from the central region.

27. An apparatus according to claim 26 wherein the first and second lateral regions are inclined at an angle of <10 degrees relative to the axis of rotation of the second wheel.

28. An apparatus according to claim 26 or 27 wherein the first and second lateral regions are inclined at an angle of <7.5 degrees relative to the axis of rotation of the second wheel.

29. An apparatus according to claim 26, 27 or 28 wherein the first and second lateral regions are inclined at an angle of 5 degrees or <5 degrees relative to the axis of rotation of the second wheel.H 16497 WO30. An apparatus according to any one of claims 26 to 29 wherein the apparatus includes at least two operational conditions, a first condition wherein a load connected to the apparatus and a second condition wherein a load not connected to the apparatus.

31. An apparatus according to any one of claims 26 to 30 wherein the motor for driving the second ground engaging wheel includes a rotational axis which extends generally upwardly away from the ground surface and wherein in the second condition the rotational axis of the motor is inclined at an angle to a plane perpendicular to the ground engaging surface, and wherein said angle is the same or substantially the same as the angles of inclination of the first and second lateral regions of the second ground engaging wheel relative to the axis of rotation of the second wheel, preferably wherein the rotational axis of the motor driving the second ground engaging wheel is inclined away from the first end of the main body.

32. An apparatus according to any preceding claim including a plurality of said first ground engaging wheels, preferably two of said first ground engaging wheels.

33. An apparatus according to claim 32 wherein the at least two first ground engaging wheels are spaced from each other at or near opposing sides of the main body.

34. An apparatus according to claim 32 or 33 wherein the apparatus includes two first ground engaging wheels and one second ground engaging wheel, with the three wheels being positioned in a triangle configuration.

35. An apparatus according to any preceding claim including one or more third ground engaging wheels, said third ground engaging wheel(s) being positioned further away from the first end of the main body than the second ground engaging wheel, preferably wherein a pair of third ground engaging wheels are provided, and preferably still wherein the third ground engaging wheels remain in contact with the ground surface during the first and second operational conditions of the apparatus.

36. An apparatus according to any one of claims wherein the apparatus includes an actuator device for moving the first ground engaging wheel(s) between its deployed and retracted conditions, preferably wherein said actuator device includes a hydraulically operated piston or the like.

37. An apparatus according to claim 36 wherein the apparatus includes an accumulator in fluid communication with the actuator device, wherein as the first ground engaging wheel(s) is moved towards its deployed position and makes initial contact with the ground surface, said actuator device is configured to continue to drive the first ground engaging wheel(s) into the ground surface, which causes pressure, e.g. hydraulic pressure, to accumulate in the accumulator.H 16497 WO38. An apparatus according to claim 37 wherein said accumulated pressure in the accumulator may be utilised automatically to move the first ground engaging wheel(s) fully to its deployed condition, preferably after a predetermined time period.

39. An apparatus according to claim 38 wherein automatic movement of the ground engaging wheel(s) to its fully deployed condition by the accumulator occurs only once the load connection device is disconnected from the load.

40. An apparatus fortransporting a load including:a main body, the main body including a first end which is use is positioned adjacent the load to be transported and a second end generally opposite the first end,a load connection device connected to or supported by the main body at the first end thereof for providing a connection to a load to be transported, preferably wherein said connection device is moveable in a generally vertical direction (e.g. towards and away from the ground surface) and is adapted to engage and bear a portion of the weight of the load to be transported, andone or more ground engaging wheels positioned on the main body being supported for rotation about a generally horizontal axis,wherein the load connection device includes a first load engaging member for engaging with a part of the load to be moved and a second load engaging member which is positioned further away from the ground engaging surface than the first load engaging member, said second load engaging member being moveable between a deployed condition and a retracted condition and vice versa, wherein in the deployed condition the second load engaging member extends over a part of the load to be moved,wherein the second load engaging member is pivotally moveable between its deployed and retracted conditions about an axis which is substantially parallel with the axis of the ground engaging wheel(s), andwherein the second load engaging member is biased towards its deployed condition, e.g. by a biasing member.

41. An apparatus according to claim 40 wherein the load connection device includes a sensor which senses when the load connection device is engaged with a part of the load to be moved (e.g. when the second load engaging member is in its deployed condition), preferably wherein the sensor is an induction sensor.

42. An apparatus according to claim 41 wherein the sensor is provided on or supported by the second load engaging member.H 16497 WO43. An apparatus according to claim 41 or 42 wherein the apparatus is configured to permit movement thereof only if the sensor senses that the load connection device is fully engaged with the part of the load to be moved.

44. An apparatus according to any one of claims 40 to 43 wherein, when the load connection device engages, in use, with the part of the load to be moved, the second engaging member is moved passively from its deployed condition to its retracted condition.

45. An apparatus according to any one of claims 40 to 44 wherein the apparatus includes a device for moving the second load engaging member to its retracted condition, preferably wherein said device includes a hydraulically operated piston or the like, more preferably wherein said device includes a single acting hydraulically operated piston.H 16497 WO

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