Abstract: A quick attach stabilizing device for skid steer loaders and similar machines for performing off-road recovery, winching, and loading operations. Primarily used by wrecker service and other service companies when 4 wheel drive winch vehicles cannot drive to the off-road location due to the extremely bad ground surface conditions caused by excessive rain, snow, or ice.

Abstract: A safety locking device 18 for a quick hitch/coupler 10 of an earth working machine. The safety locking device 18 has a locking element 21 which is biased into a locking position to automatically lock a front pin of an implement when it is engaged in the hook 14 of the coupler 10. The safety locking device 18 has an hydraulic operable mechanism to move the locking element 21 to an unlocking position. The hydraulic supply to the safety locking device 18 is independent of the hydraulic supply to a locking mechanism 16 of the coupler 10.

Abstract: A coupler assembly to interpose between the arm of the vehicle and a parallel pinned implement having two docks, one on each of the two members able to be caused to slide relative to each other, each dock engagable outwardly to its pin with at least one pin being captive in its dock by a pivoted retention member.

Abstract: An attachment interface adapted for use with a loader is discussed. The attachment interface includes a horizontally extending cross member configured to be pivotally attached to the loader at each of first and second ends. The attachment interface further includes a first attachment mounting bracket having a generally flat portion and a brace that is attached to and perpendicularly extends from the generally flat portion. A second attachment mounting bracket is spaced apart from the first attachment mounting bracket. The horizontally extending cross member is attached to the brace and the second attachment mounting bracket and wherein the second attachment bracket is otherwise unattached to the first attachment bracket.

Abstract: A quick coupler includes mounting structure for mounting the coupler to a machine, and for mounting the coupler to an implement. The mounting structure on the coupler includes wedge coupling surfaces and a tube. The mounting structure on the implement includes hooks for engaging the tube, and complementary wedge coupling surfaces. The wedge coupling surfaces wedge together during coupling to produce and tight fit and solid hold between the coupler and implement. The mounting structure is robust, and can accommodate future possible wear. The kinematic impact on the performance of the implement due to the use of the quick coupler is minimized.

Abstract: A control system for a tool coupling of the type that attaches a tool to an excavator dipper stick and provides for rotation of the tool with respect to the dipper stick about an axis, and further provides for tilting of the tool, includes a rotation sensor and a tilt sensor. The rotation sensor is mounted on the coupling for determining the amount of rotation of the tool with respect to the dipper stick about an axis. The tilt sensor is mounted on the coupling for determining the amount of tilt of the tool with respect to gravity. A control is responsive to the rotation sensor and to the tilt sensor for determining the orientation of the tool.

Abstract: A coupler for a construction attachment includes a frame including: (i) an upper portion adapted to be secured to an associated excavator; and, (ii) a lower portion adapted to be releasably coupled to a construction attachment. The lower portion of the frame includes a first hook and a second hook. A lock member is movably connected relative to the frame and is movable between an extended position and a retracted position. The first and second hooks include respective open mouths and the lock member obstructs the open mouth of the second hook when the lock member is in the extended position. An actuator is operably connected to the lock member and is adapted to move the lock member between its extended and retracted positions.

Abstract: A coupler is configured to couple an implement to an earth moving or materials handling machine. The coupler includes a locking member for locking a pin of an implement into a coupler in the recess. The locking member is driven by a hydraulic arrangement, with the hydraulic cylinder body being formed integrally with either the coupler body or the locking member. The coupler may be adapted to accommodate a range of implement pin spacings and/or diameters, so that the coupler can be used with different implements and in particular with different makes of implement.

Abstract: An implement pivots with respect to an earth moving or materials handling machine to which the implement is attached. The implement may be a bucket adapted to pivot laterally with respect to an excavator or other machine to which the bucket is attached. An adjustment arrangement includes a linear actuator which operates along a substantially fixed axis to drive the pivoting movement. The linear actuator may drive a rack which engages with a pinion to cause pivoting movement.

Abstract: A universal mount bracket that provides two pairs of adapter plates, one pair for each side of the front end loader. Each adapter plate can be adjusted laterally to match the width of virtually any size loader arm produced, and then be adjusted to the overall width of the loader (distance between the left and right loader arms). Once each pair of adapter plates have been matched to the loader arms (left and right), the equipment implement must then be centered and secured in place to prevent any lateral displacement of the unit while the implement is in use.

Abstract: A mounting system for excavator attachments or implements (10) having a pair of spaced mounting ears (12, 13) extending from implement includes a mounting pin receptor (19) engaged in each of at least one aligned pair of holes (14, 16) in the ears (12, 13), the pin receptors (19) each having an eccentric pin receptor hole (23) adapted to receive one of the mounting pins (17, 18). The pin receptors (19) are rotatable about their axes to vary, relative to the ears (12, 13), the position of the engaged mounting pin (17, 18). A locating plate (24) engaged with the mounting pin (17, 18) has one or more locating surfaces (32) to engage a cooperating surface on the ears or the attachment. The locating surfaces (32) and their engagement with the cooperating surfaces determines the relative position of the mounting pin (17, 18) engaged with the pin receptor holes (23).

Abstract: A coupler device for releasably connecting a boom arm to a tool such as a bucket including a coupling frame adapted for connection to the boom and having wedge members on opposite sides thereof, these members being provided to engage in channels formed by connecting members on the tool. A fluid actuated holding mechanism is provided to secure the wedge members in the channels, this mechanism including a holder pivotably mounted on the frame and a fluid actuator connected to the holder at one end and to the frame at an opposite end. The coupler device includes a locking pin mechanism for locking the wedge members in the channels, this mechanism including at least one locking pin movably mounted in the frame for movement between a locked position and an unlocked position and, optionally, a linear fluid actuator mounted on the frame and having a hydraulic cylinder.

Abstract: Disclosed is a coupling for machine tools, comprising a first main coupling part (1) and at least one additional main coupling part (2) for mechanically fastening an attachment (4) to the machine tool. A first power coupling part (5) is provided on the first main coupling part (1) and at least one other power coupling part (6) is provided on the additional main coupling part (2) in order to supply power to the attachment (4) or the machine tool. Furthermore, an actuator (7) which is used for actuating a locking mechanism (8) that interlocks the two main coupling parts (1, 2) is disposed on one of the main coupling parts (1, 2). A connecting device (9) is provided for automatically connecting the power coupling parts (5, 6). Said connecting device (9) for the power coupling parts (5, 6) is fitted with at least one spline (20) which can be preferably moved in a linear manner and slides the power coupling parts (5, 6) onto one another for connecting purposes by means of a wedging surface (21).

Abstract: A quick-change device in which the arrangement of centring discs and of control plates prevents jamming during the insertion operation. In accordance with an embodiment, the quick change device includes: catch bolts; centring disks fixed to the quick-change device transverse to an axis of the catch bolts, each centring disk having a circumferential outer boundary line which is at a variable distance from the axis of the catch bolts; and control plates fixed to a tool holder on a counterpart of the quick-change device, the tool holder comprising catch hooks for engaging the catch bolts during an insertion process of the catch bolts into the catch hooks of the tool holder, the control plates engaging a movement-space of the centring disks during the insertion process, wherein the circumferential outer boundary line of each centring disk moves along a surface of a corresponding one of the control plates during the insertion process.

Abstract: A coupler for a backhoe or other excavator includes a frame including an upper portion and a lower portion. The upper portion is adapted to be secured to an associated backhoe or excavator arm. The lower portion includes a first hook adapted to mate releasably with a first associated attachment pin and includes a second hook adapted to mate releasably with a second associated attachment pin. First and second safety locks are movably connected to the frame and move relative to the first hook between an engaged position for capturing the first associated attachment pin in the first hook and a disengaged position for releasing the first associated attachment pin from the first hook. An actuator is adapted to move the safety locks selectively between the engaged and disengaged positions.

Abstract: An implement attachment is coupled to a working arm of a working machine. The arm is connected to an implement attachment by fastener sleeves and fastener pins. The attachment includes two side plates, each carrying two bushes having holes for accommodating the fastener pins. The bushes have a circular guide portion fitting into a circular hole in respective side plates. Each bush has a flange connected to the side plates by a fastener. The hole receiving the fastener pins is eccentric to the guide portion with respect to at least two of the bushes. As a result, the implement attachment is readily mounted on mutually different working arms.

Abstract: A coupler includes a first hook assembly comprising a first hook adapted to receive a first associated attachment pin and a second hook assembly comprising a second hook adapted to receive a second associated attachment pin. The second hook assembly selectively pivots under force of an actuator relative to the first hook assembly by an actuator. The actuator comprises a screw jack that includes a locking sleeve to prevent unintended rotation of the screw member. The actuator can be a hydraulic cylinder and the coupler can include a locking cam that moves between a retracted position and an extended position, with a supplemental lock that selectively prevents movement of the locking cam from the extended position to the retracted position. In such case, the actuator is operatively coupled to the second hook assembly and the locking cam.

Abstract: Quick-change device (12) comprising a quick coupler (16) fastened on the driven-machine side, an adapter (16) which can be locked with the quick coupler (16) and is connected to a tool (14), and a hydraulic coupling (20) for producing a hydraulic connection between the hydraulic system on the driven machine and the hydraulics of the tool (14), wherein the hydraulic coupling (20) includes a first coupling part (20a) and a second coupling part (20b) and the two coupling parts (20a, 20b) are held relative to one another in an operating position, wherein the first coupling part (20a) and the second coupling part (20b) interact with at least mechanical retaining means (68,78,80) which are formed separately from the locking means of the quick-change device (12). The invention is distinguished by the fact that the coupling parts (20a, 20b) are held frictionally in the operating position by the mechanical retaining means (67,78, 80).

Abstract: Method for manufacturing at least one part of a device for mounting directly or indirectly on an arm of an earth-moving or material-handling machine, such as an excavator, tractor, harvester, forwarder or crane, whereby the device enables coupling and/or positioning (tilt and/or turn) of a tool (14), such as a bucket, grapple, fork, vibratory compactor or harvesting head, relatively to the arm of the machine. The method includes the steps of: a) forming a melt including unalloyed or alloyed ductile iron, b) casting at least one part of a device from the melt, c) allowing the at least one part of the device to cool, d) austenitizing the at least one part of the device, e) quenching the at least one part of the device, f) austempering the at least one part of the device, and g) allowing the at least one part of the device to cool.

Abstract: A coupler for a front-end loader or other loader includes a body comprising a front region, a rear region, an upper region, a lower region, left and right lateral sides, a tilt actuator pin-on location, and left and right arm pin-on locations. Left and right laterally spaced-apart inner rib mounts are provided on the body and are adapted to mate respectively with left and right ribs of a first type of attachment receiver structure. Left and right inner locking regions are defined by the body and are vertically aligned with the left and right inner rib mounts, respectively. Left and right laterally spaced-apart outer rib mounts provided on the body and are adapted to mate respectively with left and right ribs of a second type of attachment receiver structure. Left and right outer locking regions are defined by the body and are vertically aligned with the left and right outer rib mounts, respectively.

Abstract: An attachment arm assembly includes an attachment arm that is pivotal about an arm pivot axis using a hydraulic lift cylinder. The attachment arm assembly also includes an interface plate pivotal about an interface plate pivot axis and configured to mount a tool. The interface plate has a main body and includes a first side edge having a first end and a second end. The interface plate includes a second side edge having a first end and a second end. The interface plate also includes a top edge that couples the second end of the first side edge to the second end of the second side edge. The first ends of the first and second side edge are spaced apart from each other a distance greater than a distance between the second ends of the first and second side edges.

Abstract: An interface between a hydraulic power system and an hydraulically actuated engagement member includes a first portion that is pivotally coupled to a second portion, and has an inlet capable of being coupled to the power system. The second portion is fixedly attached to an attachment bracket capable of interfacing with an attachment. The first portion has a path to provide oil to the second portion, which in turn provides oil from the first portion to the attachment bracket. The attachment bracket includes a housing that accepts an engagement member capable of being hydraulically actuated to secure or release the attachment with respect to the power machine.

Abstract: A coupling apparatus for releasably coupling a hydraulically activated work implement to a work vehicle includes an implement attachment device for attaching a work implement to a work vehicle, a first coupling assembly, and a second coupling assembly. The implement attachment device includes a forward side for facing the work implement and a rearward side for facing the work vehicle, first mounting members extending from the rearward side for mounting the implement attachment device to at least one boom arm of the work vehicle, and second mounting members for mounting the implement attachment device to the work implement. The first hydraulic coupling assembly extends from the rearward side, and includes a first coupler configured for fluid communication with a hydraulic power source on the work vehicle.

Abstract: A female coupler portion includes first and second vertical ribs arranged in a spaced-apart relationship. The ribs comprise first and second hooks and first and second ears, respectively, wherein each of the first and second ears includes at least one shoulder projecting outwardly therefrom. A male coupler portion includes a frame having a front region and a rear region that is pinned to the machine. A first pair of hook engaging mounts are adapted to be received respectively by first and second hooks of a female coupler portion; a first pair of openings are adapted to receive first and second ears of a female coupler portion; first and second lock members are movable between an unlocked position and a locked position to engage the ears of the female coupler portion. The ribs can be constructed from conventional ribs. The male coupler portion optionally includes multiple mounting locations for mating with different female coupler portions.

Abstract: An arrangement for a loader makes it possible to attach a tool to the loader. The arrangement comprises a locking arrangement for determining the position of the tool and locking it to the arrangement in this position, and a safety arrangement that ensures that the locking arrangement takes up its locking position only when a tool is correctly arranged at the attachment arrangement. The arrangement includes a part that functions independently of the locking arrangement and that can retain the locking arrangement in an open position that does not perform the locking function, and a releasing part that releases the locking arrangement from the retaining part.

Abstract: A quick coupling apparatus for coupling a tool to a tool arm comprises a coupler member attached to the tool arm, and configured to engage a mounting bracket extending out from the tool. A wedge is mounted on the coupler member and is movable, when the coupler member and mounting bracket are engaged, from a closed position engaged in a groove on the mounting bracket to an open position where the wedge is removed from the groove. A wedge positioning mechanism selectively moves the wedge to the closed position and the open position. When the wedge moves into the groove and into the closed position, a remotely operated latch control moves a safety latch from an unlatched position to a latched position to prevent the wedge from moving toward the open position. The wedge positioning mechanism can be configured to utilize a single or double acting actuator.

Abstract: The invention relates to a tool holder for cranes. The tool holder comprises hydraulic cylinder means arranged to detachably be able to lock a tool to the tool holder. Furthermore, hydraulic coupling means is comprised and arranged to be connected with hydraulic coupling means on the tool and hydraulic line means. The object of the invention is, among other things, to reduce the number of requisite lines in the hydraulic line means. According to the invention, the tool holder comprises furthermore valve means provided with switching means arranged to connect the hydraulic line means either to the hydraulic cylinder means or to the hydraulic coupling means of the tool holder. Thereby, the same hydraulic line means may be used for the locking i 5 function and the tool. The invention also relates to a crane provided with such a tool holder as well as use of the tool holder.

Abstract: A mounting frame for attaching a backhoe or other implement to a lift arm of a vehicle, such as a compact loader, includes an upright arm on the mounting frame that is positioned ahead of and adjacent to a forward portion of a lift arm of the loader. The upright arm carries a pivoting locking handle at a first pivot and a locking link is pivotally supported on the locking handle on a first pivot pin. The locking link has a second pivot pin that can be moved to be supported in an existing pin sleeve or bushing on the lift arm. The pivot pins on the locking link are positioned so that when the locking handle is moved to a locked position, the line between the axes of the pivot pins on the locking link goes over center with respect to the pivot axis of the first pivot locking handle, and a hook end of the link latches onto a locking projection on the upright arm. The mounting frame is held in a fixed position relative to the lift arm.

Abstract: In combination a vehicle having an extension and an adaptor faceplate. The extension includes a first power-operated extension mount and a second mount. The adaptor faceplate comprising a rigid member securable to skid steer attachments with the rigid member having a front side and a back side with a frame extending from the back side of the rigid member for supporting a first connecting member and a second connecting member thereon with the first connecting member attachable to the first power-operated extension mount and the second connecting member attachable to the second extension mount.

Abstract: Coupler has a safety lock and a latching hook. The safety lock pivots between an unlocked position in which it does not contact a first implement pin receivable within a pair of apertures, and a locked position in which it retains the first pin within the apertures. The latching hook pivots between an unlatched position in which it does not contact a second implement pin receivable within another pair of apertures, and a latched position in which it retains the second pin within the apertures. A spring biases the safety lock toward the locked position, maintaining engagement of the safety lock with the first pin and preventing its withdrawal from the apertures in the event of a hydraulic system failure. When the implement is released, the spring continues to bias the safety lock toward the locked position, preventing withdrawal of the first pin from the apertures in the event of a hydraulic system failure before completion of the release operation.

Abstract: A quick coupler for attaching implements, such as buckets or other tools, to heavy equipment, such as backhoes and excavators, which includes two recesses or channels for receiving a pair of machine pins of an implement. A hydraulic piston actuates a first locking lever to enclose one of the pair of machine pins in one recess and a second locking lever to enclose the other one of the pair of machine pins in the other recess.

Abstract: This invention concerns a device (1) for attaching a loader (2) to a vehicle (3), usually a tractor, where the loader (2) comprises openings (4) in parts (6) facing the vehicle (3) and the vehicle (3) comprises openings (5) in attaching parts (7) facing the loader (2) and where the openings (4, 5) when attaching are arranged so that the centre point P of each opening lies on an axis common to all the openings (4, 5).

Abstract: Bosses extending in the boom width direction are provided in a front end part of a main boom body rotated upward, and hooks opening downward are provided in a base end part of a front boom body rotated downward. In a state that the bosses and the hooks are engaged with each other, a scooping action is performed so as to match pin holes thereof. The above hooks and the bosses are arranged so as to satisfy a condition that in a state that an angle between both boom bodies is a maximum angle at the time of work, the hooks and the bosses are moved away from each other and a distance between the hooks and the bosses is increased as the angle is reduced from the maximum angle.

Abstract: A loader coupling system includes an arm coupler and a link coupler each adapted to mate with an associated attachment. The arm coupler includes a body adapted to be connected to and extend between first and second spaced-apart arms of an associated loader machine. First and second plunger pins are located respectfully at opposite first and second ends of the body. At least one plunger actuator is operatively connected to the first and second plunger pins, and the at least one plunger actuator is selectively operative to move the first and second plunger pins between a retracted position and an extended position.

Abstract: An attachment coupler is attached to an end of an arm of a working machine. An attachment having two attachment pins in parallel can be detachably attached to the attachment coupler. The attachment coupler includes a first U-shaped portion that engages with and supports one of the attachment pins sideways, and a second U-shaped portion that receives the other attachment pin downwardly. The second U-shaped portion includes a rotary hook that opens and closes the opening of the second U-shaped portion. The rotary hook includes an engagement securing member that engages with and secures the rotary hook when the rotary hook closes the opening of the second U-shaped portion and when the rotary hook opens the opening of the second U-shaped portion, and a bolt securing member that secures the rotary hook with a bolt when the rotary hook closes the opening of the second U-shaped portion.

Abstract: A safety device for use with a hydraulic hitch assembly operable between an engaged and a disengaged position, the safety device including: a main body portion moveable between an engaged position and a disengaged position, whereby when the main body portion is in the engaged position the safety device prevents the hydraulic hitch assembly from moving to a disengaged position; a biasing means to bias the main body portion towards an engaged position; and a hydraulic piston which when operated acts against the biasing means and moves the main body portion to a disengaged position.

Abstract: The invention concerns a coupler comprising a cam (211) for locking a tool (100) with the coupler (200), characterized in that the cam (211) comprises for bringing the cam into a locking position, an articulation (213) with a connecting rod (209) itself connected through a bearing (206) to a piston (209) mobile in a bore (203) of the coupler body (200), said piston being subjected to the action of a spring (208), a chamber (220), opening on to a conduit (223), being formed by the piston (205) and the base of the bore (203), and means (215) for being connected to an unlocking object for applying an unlocking torque on the cam.

Abstract: An assembly for securing an implement to a boom, the assembly comprising a link member pivotally connected to a boom and, a first recess being formed in a first of the arm and a second being formed in the link member proximate one end thereof, the second recess having elongated configuration with a longitudinal axis extending parallel to the link member longitudinal axis, the implement assembly comprising a mounting arm and a implement, the mounting arm having a pair of first pins extending outwardly from opposite sides thereof and a pair of second pins extending outwardly from opposite sides, the first pair of pins being located between the implement receiving end and the center of gravity of the implement assembly. The arrangement permits rapid and secure switching of different implements.

Abstract: A coupling for a plow comprising a push beam attachable to a front of a vehicle. The push beam has at least one outwardly-extending plate at each end thereof. Each plate has an aperture extending therethrough. A support frame is provided that is attachable to the back side of a plow assembly. The support frame has two spaced-apart plates extending therefrom, each of the plates having an aperture therethrough. The plates are dimensioned to be positioned adjacent the plates on the push beam with the apertures in the plates being aligned. A locking assembly is provided for locking the support frame to the push beam. The locking assembly is comprised of a pair of axially aligned pins biased outwardly away from each other. Each of the pins has an inner end and an outer end. A linkage connects the inner ends of the pins. The linkage has a first position wherein the pins are retracted toward each other along the axis, and a second position wherein the pins extend outwardly away from each other along the axis.

Abstract: An apparatus for connecting an attachment to a vehicle includes first and second mounting pegs mounted to one of the attachment and vehicle, a mounting arm having first and second cut-outs sized and spaced to receive the respective first and second mounting pegs, and first and second latches that are pivotable to trap the mounting pegs in the cut-outs. The apparatus further includes a detent mechanism resiliently holding the first latch in each of the latched and unlatched positions with a detent force. An over-center biasing mechanism provides a biasing force along a line of force, and urges the second latch into the latched and unlatched positions in response to the line of force being on one side of the pivot axis or the other.

Abstract: An adapter for mounting at least one skid-steer loader attachment onto an excavator arm includes a mounting mechanism having a lower edge, an upper edge and a lip extending outwardly therefrom, the lip receiving an upper lip of such at least one skid-steer loader attachment for locking thereto. The mounting member is adapted with a pair of aligned first notches, a pair of aligned second notches and a pair of apertures for coupling onto a free end of such excavator arm in a conventional semi-permanent manner. A pair of locking assemblies are provided selectively engaging and releasing a lower edge of such at least one skid-steer loader attachment.

Abstract: A loader attachment system for efficiently attaching an implement (i.e. bucket, etc.) to a skid steer loader or other similar use vehicle. The loader attachment system generally includes an upper assembly including an upper end and a lower end, wherein the upper assembly is pivotally attached to a mounting plate, a sleeve attached to the mounting plate, a plunger pivotally attached to the lower end of the upper assembly, wherein the plunger extends within the sleeve and wherein the plunger slidably adjusts within the sleeve and a first spring mechanically connected between the upper assembly and the mounting plate. The first spring mechanically rotates the plunger within the sleeve via rotation of the upper assembly.

Abstract: A cam lock device for replacing the conventional pins connecting a loader mechanism to a prime mover, the device in conjunction with a modified loader mounting bracket, provides an adjustable, easily installable and removable apparatus that allows secure and convenient attachment/detachment of a loader mechanism to a prime mover.

Abstract: An improved dipper stick, tool, and thumb combination includes a progressive linkage for connecting the thumb to a thumb actuator wherein the pivot axis of the thumb idler link connection is spaced from the pivot axis of the tool idler link connection. The pivot axis of the thumb idler link connection may be offset outwardly from the inner surface of the dipper stick. A mounting plate may be connected to the inner surface of the dipper stick to locate the pivot axis in the offset position.

Abstract: In a work machine 1, an angle ? formed by a first line segment L1 connecting a pivot position Y of a bell crank 11 on a boom 10 and a pivot position X of the bell crank 11 on a connecting link 13, and a second line segment L2 connecting the pivot position Y of the bell crank 11 on the boom 10 and a pivot position W of the bell crank 11 on the tilt cylinder 12 on a bucket 20 side is 176 (deg) or less, an angle ? formed by the second line segment L2 and a line segment L3 connecting the pivot position W of the bell crank 11 on the tilt cylinder 12 and a pivot position Z of the tilt cylinder 12 on a working structure is 72.3 (deg) or less, and, in a case where the bucket 20 is set at a top position, a lowering angle ? of a front end of a lower surface of the bucket 20 is 4.5 (deg) or less.

Abstract: A coupling apparatus for releasably coupling a hydraulically activated work implement to a work vehicle includes an implement attachment device for attaching a work implement to a work vehicle, a first coupling assembly, and a second coupling assembly. The implement attachment device includes a forward side for facing the work implement and a rearward side for facing the work vehicle, first mounting members extending from the rearward side for mounting the implement attachment device to at least one boom arm of the work vehicle, and second mounting members for mounting the implement attachment device to the work implement. The first hydraulic coupling assembly extends from the rearward side, and includes a first coupler configured for fluid communication with a hydraulic power source on the work vehicle.

Abstract: A pivoting loader attachment system for allowing an attachment to freely pivot with respect to a tractor's loader. The pivoting loader attachment system includes a pivoting connector pivotally attached to an attachment. The pivoting connector is attached to the front end connector of a front end loader. The pivoting connector pivots within a defined range of movement thereby limiting the range of movement the attachment makes with respect to a front end loader of a tractor.

Abstract: A device is provided for attaching a first part in the form of an instrument or tool to a second part in the form of a beam or such on a working machine having, on each of the parts, one engagement member fixed thereto, which are designed to be driven into engagement with each other so that the force of gravity on the first part holds the parts attached to one another. A first (17) of the engagement members is of the male-type having external surfaces converging towards each other and a second of the engagement members is of the female-type having internal surfaces converging towards each other in a corresponding way to said surfaces of the first engagement means for receiving and holding the first engagement means in the second engagement means under the influence of the force of gravity on the first part.

Abstract: A pallet jack having first and second turn radii includes a support frame having a first end and a second end. The support frame is positionable between a raised position and a lowered position. A main wheel connects to the support frame proximate the first end while a first extensible wheel connects to the support frame proximate the second end. The distance between the main wheel and the extensible wheel define the first turn radius when the support frame is in the raised position. A ground engaging device attaches to the support frame between the main wheel and the first extensible wheel. Positioning the support frame towards the lowered position, the ground engageable device engages the ground and the extensible wheel disengages the ground. The second turn radius is thereby defined by the distance between the main wheel and the ground engaging device, which is less than the first turn radius.

Abstract: An attachment coupler includes a first arm and a second arm, each including a U-shaped portion, and upper portions of the first and second arms being swingably connected by a swing shaft, and an expansion-contraction tool which opens and closes the first and second arms around the swing shaft as a fulcrum. A locking member provided with a cam and a hook provided with a cam follower are rotatably provided on the second arm. A state in which a free end of the hook is removed from an opening of the U-shaped portion is maintained by engagement of the cam and the cam follower during contraction of the expansion-contraction tool. The cam follower is driven by the cam along with rotation of the locking member during expansion of the expansion-contraction tool, thereby causing the free end of the hook to advance toward the opening of the U-shaped portion.