Abstract: A mobile crane includes an undercarriage, a superstructure having a crane boom and a crane cable, and a plurality of support carriers for stabilizing the undercarriage in a correct operating state. In order to set-up the mobile crane, a support carrier is disposed in a disassembled state separately from the mobile crane in a waiting position. The support carrier is connected to the crane cable of the crane boom and is shifted between the waiting position and a receiving position which is disposed on the undercarriage. The support carrier is moved by the crane boom between the receiving position and a coupling position in a support box of the undercarriage in such a manner that the support carrier is guided in the support box at least in a substantially tension-free manner. A controller is configured to carry out the set-up method.

Abstract: A stabilizer leg device with a stabilizer leg to be moved down-wards from an object so as to stabilize the object by bearing through a foot plate (7) on the ground. The device comprises a first engagement member (20) arranged coaxially to a horizontal axis on a part (19) fixed in relation to the object, and a shaft (12) having a first end provided with a second engagement member (21) and an opposite second end arranged to be influenced by movement of a second stabilizer leg member in relation to a first stabilizer leg member to make the shaft slide along the stabilizer leg under extension and retraction of the stabilizer leg so as to cause pivoting of the stabilizer leg by a mutual engagement of said engagement members (20, 21).

Abstract: A mobile crane includes a counterweight carrier capable of traveling following a movement of a crane main body, the counterweight carrier including a carrier main body on which a counterweight is loaded and a wheel unit attached to the carrier main body and including wheels, a wheel driving device configured to rotate the wheels to thereby cause the counterweight carrier to travel, a loadage detector configured to detect a weight loadage index value, which is an index value of weight of the counterweight loaded on the carrier main body, and a controller configured to cause the wheel driving device to change a driving force of the wheel driving device for rotating the wheels such that the driving force increases as the weight loadage index value detected by the loadage detector increases.

Abstract: The present invention relates to a method of moving a large mobile crane having a luffable boom system. In accordance with the invention, the boom system is luffed down into a largely horizontal position for moving and is supported on a support block of a construction machine or of a small mobile crane so that the large mobile crane can be moved together with the construction machine or the small mobile crane. The invention further relates to a system for carrying out the aforesaid method.

Abstract: Provided is a crane which comprises a luffing jib including a lower jib and an upper jib coupled to the lower jib in such a manner as to be separable from the lower jib, the lower jib is attached to a head of a boom to have a laid-down posture at a position between the boom and a strut when the upper jib is separated from the lower jib, when the boom is lowered and laid down to allow the head of the boom to come into contact with a ground and when the strut is lowered and laid down to allow a distal end of the strut to come into contact with the ground, and the lower jib has a length which causes no interference with the strut when the lower jib has the laid-down posture at the position between the boom and the strut.

Abstract: A device for detecting and monitoring an assembled counterweight on a crane includes a turntable steelwork construction comprising a counterweight cylinder; a sensor which is arranged in the region of a connection between the counterweight cylinder and the turntable steelwork construction; and a computational unit (8), wherein the sensor is connected to the computational unit, and the computational unit comprises a logic which determines a weight of a counterweight which can be connected to the turntable steelwork construction from data which are captured by the sensor and transmitted to the computational unit.

Abstract: Embodiments of the present disclosure generally pertain to hoisting methods for vehicles, such as UH-60 Black Hawk helicopters (“Black Hawks”). An external hoist arm system in accordance with an exemplary embodiment of the present disclosure is configured to be temporarily mounted to the outside of a vehicle. The hoist arm system is further configured to support a hoist and position the hoist above an external door of the vehicle. A rotatable adjustment member is used to adjust an angular position of the hoist relative to the vehicle.

Abstract: Disclosed herein, amongst other things, is a system for providing added safety for workers using rigging systems. In an embodiment, the invention includes a safety device for a roof rigging system including a rigger arm having a proximal end and a distal end; an attachment member disposed on the distal end of the rigger arm, the attachment member defining an aperture, the attachment member configured to engage a rigging line with the aperture; and a blocking member disposed on the distal end of the rigger arm, the blocking member configured to interface with the attachment member to prevent engagement of the attachment member with the rigging line by occluding the aperture when a counterweight is not attached to the roof rigging system.

Abstract: A mobile crane includes an undercarriage with a middle section and two parallel crawler carriages; a superstructure on which a boom is mounted, the superstructure being connected to the undercarriage by a rotary joint; two longitudinal outriggers connected to the undercarriage and extending in the longitudinal direction between the crawler carriages; and two transverse outriggers connected to the undercarriage and extending outside the crawler carriages. One of the longitudinal outriggers has an end with a transverse beam supported by spaced apart outrigger cylinders which provide an extended tipping edge to further stabilize the crane.

Abstract: The present invention relates to a mobile machine, in particular a truck crane, with an undercarriage on which extendable sliding beams located opposite each other relative to its middle axis are arranged, which include extendable supporting feet, and with an uppercarriage to which a boom, preferably a telescopic boom, is luffably articulated. According to the invention, at least one sliding beam on one side of the middle axis is designed such that the extendable supporting foot can be extended further away from the middle axis than the other supporting feet.

Abstract: A mobile crane includes an undercarriage with a middle section and two parallel crawler carriages; a superstructure on which a boom is mounted, the superstructure being connected to the undercarriage by a rotary joint; two longitudinal outriggers connected to the undercarriage and extending in the longitudinal direction between the crawler carriages; and two transverse outriggers connected to the undercarriage and extending outside the crawler carriages. One of the longitudinal outriggers has an end with a transverse beam supported by spaced apart outrigger cylinders which provide an extended tipping edge to further stabilize the crane.

Abstract: A mobile lift crane includes a carbody and at least four crawlers attached to the carbody, each crawler having a crawler frame attached to the carbody by a trunnion having an axis. The crawler frame is attached to the carbody so as to be able to pivot with respect to the carbody about the axis of the trunnion. The crane also includes a rotating bed rotatably connected to the carbody such that the rotating bed can swing with respect to the crawlers and a boom pivotally mounted on a front portion of the rotating bed. A linear actuator is connected between the crawler frame and the carbody and extends through the trunnion. The linear actuator is part of a self attachment mechanism. The trunnion includes a tubular member with a longitudinal axis, a first end configured for connection to the crane carbody and a second end configured for connection to the crawler frame. At least one of the ends is configured to allow rotational movement of the crawler frame relative to the carbody about the longitudinal axis.

Abstract: The invention concerns a lattice boom crane, which is composed of at least two individual lattice boom cranes (1, 11), which each comprise a luffing lattice boom (4, 14), whose luffing angle is adjustable by a luffing mechanism (5, 15). The lattice booms (4, 14) of the individual lattice boom cranes (1, 11) are connected with each other and oriented in parallel and adjacent to each other and the luffing mechanisms (5, 15) of the lattice boom cranes (1, 11) are synchronously operated, such that the rigidly-connected lattice booms (4, 14) are synchronously luffable.

Abstract: A combination crane A is formed by connecting two crawler cranes 1L and 1R. Each crawler crane is provided with at least a lower propelling body 3 which can be propelled by crawlers 2, an upper revolving body 5 rotatably mounted on the lower propelling body 3 by a swing unit 4 provided between them, a boom 6 whose base section is tiltably supported on the upper revolving body, a tilting mechanism 10 that raises and lowers the boom and a hoist mechanism that hoists and lowers the lifting members 12 hung by a hoist rope 11 from the top of the boom. Both upper swing bodies of two cranes are connected together with a connecting beam 20. Swing motion is performed by driving the one crawler crane to move around the other crawler crane which is free to rotate and is locked against propulsion.

Abstract: A mobile lift crane includes a central crane unit, a boom unit and a counterweight unit. The central crane unit has a carbody, moveable ground engaging members and a rotating bed mounted to the ground engaging members with a rotatable connection such that the rotating bed can swing with respect to the ground engaging members. The boom unit has a support member, at least one moveable ground engaging member, and a boom pivotally mounted on the support member. The counterweight unit has counterweight on a support member. Rigging connects the boom and counterweight unit such that a load lifted by the boom can be counterbalanced by the counterweight. The boom unit and counterweight unit are connected to the central crane unit by structural members that carry compressive loads and maintain the boom unit, the rotating bed and the counterweight unit in lateral alignment with each other, but allow relative vertical movement between the boom unit, the rotating bed and the counterweight unit.

Abstract: A material-handler adapted for locating on top of an open topped railroad car includes a chassis mounted on tracks, and a first and second pair of outriggers extending from the chassis. Wheels and clamps are located at the distal ends of the outriggers to stabilize the material handler on the top of the railroad car. A knuckle boom is rotatably mounted on the chassis for manipulating cargo materials. The material handler of the invention also utilizes the clamps and wheels on the outriggers in conjunction with the boom to self-load and self-unload the material handler to and from the top of a railroad car, and to and from one care to another with possible different height and width. Operator safety is enhanced by allowing the operator to control the self-loading and unloading via remote control.

Abstract: A vehicle with a variable-length wheelbase is disclosed. The vehicle of one embodiment has a first body portion coupled to a first set of wheels and a second body portion coupled to a second set of wheels to define a vehicle wheelbase. The first and second body portions are moveable relative to each other in a direction substantially parallel to a longitudinal axis of the vehicle, so as to move the base between extended and retracted positions. When the base is in the retracted position the vehicle's wheelbase has a first length, and when the base is in the extended position the wheelbase has a second length greater than the first length. A boom is pivotally coupled to the base. The boom moves toward a lowered position when the base is moved toward the extended position, and the boom moves toward a raised position when the base is moved toward the retracted position.

Abstract: In one embodiment, a system for lifting and supporting a vehicle is described. The system includes at least one vehicle hoist fitting configured to distribute the weight of the vehicle along a skin of the vehicle, at least one removable bearing cup assembly configured to attach to said vehicle hoist fitting, and at least one trunnion assembly configured for attachment to a support structure and further configured to engage said removable bearing cup assembly.

Abstract: An assembly for mounting various work tools, e.g., a backhoe, to a pair of parallel frame members (28) of a vehicle (20). A pair of parallel main beams (26) extend transversely across the frame members (28) and a telescoping stabilizing leg (24) extends downwardly from each end of each of the main beams (26). Four posts (48) extend from the main beams (26) for connecting the main beams (26) at spaced positions along the pair of parallel frame members (28). Each of the posts (48) is L-shaped in cross section with one flange thereof welded to the associated main beam (26) and the other flange attached to the vehicle (20) frame members (28). A pair of bearing blocks (50) are disposed on a first leg cross-beam (42) for pivotally supporting a and a pair of hydraulic cylinder-pistons (52) are attached to a main cross-beam (40) for pivoting the backhoe about the bearing blocks (50).

Abstract: A crane support consisting of a steel square tubing pedestal having an apertured mounting plate fixedly attached to its upper end, and having an enlarged base fixedly attached to its lower end; an axle, the pedestal being mounting rotatably upon the axle; an auxiliary implement mounting frame fixedly attached to a rearward end of the axle, such mounting plate being adapted for attachment to skid steer loader lift arms and bucket dumping rams; a pair of telescoping outriggers fixedly attached to and extending laterally from the pedestal, each outrigger arm having downwardly extendable and upwardly retractable foot fixedly attached to its distal end; a plurality of hydraulic cylinders operatively connected to the telescoping outriggers and to the feet for alternating lateral and vertical extensions and retractions; and a hydraulic cylinder connected operatively to the pedestal for alternately locking the pedestal against rotation with respect to the mounting frame and permitting such rotation.

Abstract: A transportation cart primarily for transporting deceased animals through the alleyways of a barn has a swivelling mast and boom mounted on the front section of a frame driven by powered wheels with a slide panel attached to the mast below the boom over which the object can slide as it is pulled by actuating a winch to be carried. A coupling is provided between the front frame section and a rear frame section with castor wheels for providing side to side movement of the rear frame section relative to the front frame section transverse to a longitudinal center line to provide ballast when the lifting is to one side and to provide manoeuvrability. The boom has an inner end mounted on the mast for pivotal movement about a transverse axis such that an outer end of the boom can be raised and lowered and the slide panel is movable from its inclined slide position below the boom to a raised stored position attached to an underside of the boom.

Abstract: The invention pertains to a traveling crane consisting of a superstructure that can be turned about an upright axis and carries a crane jib with hoisting means, a truck with a tracklaying gear that carries the superstructure and a supporting device with several outriggers that can be raised and lowered, wherein the superstructure as well as the truck can be turned relative to the supporting device about an upright axis.

Abstract: In a vehicle with a superstructure having at least one swiveling mast on a slewing gear and a frame support with the aid of front and back movable telescopes disposed on each side of the long sides of the vehicle, their stationary telescopes being disposed at least partly in an arc tangentially to the longitudinal direction of the vehicle and extending in each case from one of the long sides of the vehicle profile inward substantially as far as the middle of the vehicle and then on to the same long side of the vehicle profile, it is provided according to the invention that the stationary telescopes of the front and back movable telescopes of each long side of the vehicle are realized with a common carrier and disposed one behind the other such that the movable telescopes emerge from the associated ends of the carriers.

Abstract: The invention is directed to a ring lift crane with a liftable ring forming a circular traveling path and having a plurality of segments which can be connected to one another. Within the ring, there is arranged a chassis having a superstructure which is connected with the chassis so as to be rotatable and which has a plurality of winches. The superstructure is provided with an adapter in each of two oppositely located end areas, and the adapters are supported in a rolling manner on the circular traveling path of the ring by rollers which are arranged in the end area of the adapters.

Abstract: A mobile crane includes a chassis having first connection features located on a rear end thereof. An outrigger includes second connection features for mating with the first connection features. A tag axle assembly includes third connection features for mating with the first connection features. The first connection features may accept either the second connection features or the third connection features, so that the mobile crane may be selectively configured for highway travel and selectively configured for working operation. One or more axles of the mobile crane may be elevated when the tag axle assembly is connected to the first connection feature. Further, a wheeled boom dolly may be employed to share weight with the chassis when the mobile crane is travelling.

Abstract: A stabilizing leg for a backhoe is formed with a tubular outer member, a stabilizer rod connected telescopically to the tubular outer member, and a clearance adjusting mechanism for adjusting the clearance between the tubular outer member and the stabilizer rod. The clearance adjusting mechanism is provided with at least one adjusting pad fitted to the tubular outer member so as to rest on an edge between two contiguous outer lateral surfaces of the stabilizer rod.

Abstract: A mobile harbor crane for the combined handling of containers and bulk materials, having an undercarriage and an upper carriage which is mounted rotatably on the base frame of the undercarriage and on which a tower with a boom that can be pivoted about a horizontal axis is arranged. Four support beams are connected pivotally to a base frame of the undercarriage, symmetrically to the longitudinal and transverse axes of the vehicle, in such a way that they can each be pivoted about vertical axes, they are provided at their free ends with vertically acting leveling cylinders, by means of which the support beams are supported on the wheels of a plurality of traveling gear assemblies via balancers for uniform distribution of the supporting forces.

Abstract: The invention is directed to a ring lift crane with a liftable ring forming a circular traveling path and having a plurality of segments which can be connected to one another. Within the ring, there is arranged a chassis having a superstructure which is connected with the chassis so as to be rotatable and which has a plurality of winches. The superstructure is provided with an adapter in each of two oppositely located end areas, and the adapters are supported in a rolling manner on the circular traveling path of the ring by rollers which are arranged in the end area of the adapters.

Abstract: A ringlift crane having a ring which can be elevated, forms an annular track and has a plurality of segments which can be connected to one another, there being arranged within said ring an undercarriage which has an upper carriage, which is connected for slewing action to the undercarriage and has a plurality of hoisting winches. Two trusses which are spaced apart parallel to one another, are provided, in two mutually opposite end regions, with in each case one adapter and can be bolted to, and unbolted from, the upper carriage via crossmembers. The adapters are supported with rolling action on the annular track of the ring by rollers arranged in the end region of the adapters. For the purpose of setting different modes of operation of the crane, the trusses can be raised relative to the basic machine and connected in different ways to the crossmembers.

Abstract: A ringlift crane having a ring which can be elevated and forms an annular track. Arranged within the ring is a standardized undercarriage from a first crane class and a standardized upper carriage, which is connected for stewing action to the undercarriage and has a plurality of hoisting winches. The upper carriage is connected to one adapter in both end regions. The adapters are supported with rolling action on the annular track of the ring by rollers. The center point of the ring and/or of the undercarriage forms the stewing axis. One adapter is designed for accommodating a counterweight and the other adapter is designed as a load-bearing element for the main boom and the mast (counter-boom) which can be articulated at the free end of the adapter. The top of the mast is connected, on the one hand, to the counterweight via a stay cable and, on the other hand, to the head of the main boom via a changeable-length cable stay.

Abstract: An improved lift mechanism that is portable and towable, and is attachable to a front end loader such as a skid steer™ and has a telescopic and angularly adjustable load carrying boom. The lift may be pivotable about the front end loader to allow for better positioning and use of it.

Abstract: A shaped interior stiffener is molded into a polymeric material pad, forming a cushioning pad that can be affixed to a stabilizer leg foot on mobile equipment such as a crane or excavator. A variety of foot pads is contemplated, each specifically designed to fit without alteration to a variety of different manufacturer's equipment through use of bolts protruding from one surface of the foot pad. The interior stiffener is shaped in such a manner that it conforms to the bolt pattern of a particular equipment model, having socket-like receivers for the heads of the protruding bolts, efficiently distributes stress throughout the structure to minimize stress failures, and provides a plurality of ribs, webs and openings to allow maximum durability and adhesion between the stiffener and the polymeric foot pad material which encapsulates the stiffener.

Abstract: A road-rail crane includes a crane undercarriage with spreadable outriggers hinged to the undercarriage; a crane superstructure connected to the crane undercarriage with freedom of rotation, the luffing boom of the crane being mounted on the superstructure; and rail traveling gear attached to the crane undercarriage for rail travel. The crane undercarriage and the crane superstructure can be carried temporarily as a single transportable unit by a road transport means, which can be removed and then replaced by the rail traveling gear, which can be connected to the crane undercarriage, after the crane undercarriage has been supported and raised on the spread-out outriggers.

Abstract: A mobile harbor crane for the combined handling of containers and bulk materials, having an undercarriage and an upper carriage which is mounted rotatably on the base frame of the undercarriage and on which a tower with a boom that can be pivoted about a horizontal axis is arranged. Four support beams are connected pivotally to a base frame of the undercarriage, symmetrically to the longitudinal and transverse axes of the vehicle, in such a way that they can each be pivoted about vertical axes, they are provided at their free ends with vertically acting leveling cylinders, by means of which the support beams are supported on the wheels of a plurality of traveling gear assemblies via balancers for uniform distribution of the supporting forces.

Abstract: A system of multiple concentric annular support pedestal rings for providing load and counterweight support for a ring supported crane. The pedestal rings are fabricated from uniform sections of steel, which are mated at preferably triangular shaped ends. A top rail is secured on the ring segments to complete the pedestal ring. At least two rings support the crane through rocker beam assembly structures for powered and idler rollers, providing additional strength and stability to the crane through the distribution of weight forces down through a larger support footprint. Additional stability is also provided by substantially increasing the weight of counterweight that can be utilized. Weight distribution from the boom and mast is enhanced with an inventive boom foot carrier, that distributes the weight of the boom and/or mast through multiple concentric rings. Weight distribution from the counterweight is similarly distributed through the inventive counterweight carrier.

Abstract: A monitoring system is provided for monitoring positioning and stability of an articulated boom system The articulated boom system includes an articulated boom, having one or more boom sections, extending from a base, along with one or more outriggers extending from the base. The monitoring system includes a load sensor placed on a leading end of the articulated boom, a boom position sensor placed on the leading end, an outrigger sensor placed on the outrigger(s) and a computer. The load sensor delivers a signal to the computer indicative of the load on the leading end The boom position sensor delivers information to the computer indicative of the position of the leading end with respect to the base. The outrigger sensor delivers a signal to the computer indicative of the extension of the outrigger(s) from the base. The computer determines the position of the articulated boom based upon the sensed position of the leading end.

Abstract: A reach truck with two horizontal support legs supporting the reach truck by load wheels and the end of the legs. Simple means are provided to manufacture such trucks with varying spaces between the support legs.

Abstract: A self-propelled boom vehicle has an extendible axle and an extendible steering mechanism which has an automatic steering synchronization system. The extendible axle has a hollow central support sleeve and telescopic arm sections. A single hydraulic extension axle is positioned inside the hollow central support sleeve and connects to and drives the telescopic arm sections between their retracted and extended positions. The steering synchronization system includes a pair of steering cylinders in a closed hydraulic circuit working in a master-slave arrangement and which operate inversely with respect to each other. A mechanical check valve is carried by each piston which allows excess hydraulic fluid to flow through the check valve to allow the piston to travel to the end of its stroke to resynchronize the steering.

Abstract: A placement and orienting apparatus for a pump and water passing pipe assembly includes a wheeled trailer supporting the pump and water passing pipe assembly; an upper frame structure; a lower frame structure; a turntable bearing assembly positioned between and interconnecting the upper and lower frame assemblies and permitting rotation of the upper frame structure relative to the lower frame structure; a motor drivably connected to one of the upper frame structure, the lower frame structure and the turntable bearing assembly to rotate the upper frame structure and the trailer relative to the lower frame structure and the ground; and at least one upright hydraulic cylinder having a cylinder lower end connected to the upper frame structure and having a cylinder upper end connected to the trailer to drive the upper and lower frame assemblies downwardly together from the trailer so that the lower frame structure makes contact with the ground and elevates the trailer from the ground.

Abstract: An improved lift mechanism that is portable and towable, and has a telescopic and angularly adjustable load carrying boom, four telescopic support legs with pivotable wheels thereon, and a low center of gravity frame of a two part construction pivotally connected together and having a tilt indicator warning thereon.

Abstract: A compact mobile crane for lifting or lowering a load to or from a roof or other location of a building, and for raising, lowering, and supporting a load along the sides of a building. Elements of the mobile crane can be folded to allow the mobile crane to be moved into, and transported by, a standard size building elevator. Wheel assemblies on the carriage of the mobile crane can be configured for four wheel steering, locked in predetermined directions, or free pivoting. The wheel assemblies further include a wheel retraction apparatus for retracting the wheels of the mobile crane to support the crane on fixed length supports. The carriage frame members include rows of holes spaced at equal distances from each other, providing a system for easily fastening numerous elements to the mobile crane.

Abstract: A combination engine hoist and stand for lifting and supporting an engine includes a variably oriented "H" shaped multi hinged base with frame extension capability mounted on casters and a combined hoist and stand vertical column located on the base for communicating with and supporting both a hoist and a stand via a collar disposed therebetween. The hoist includes a boom and a hoist column, the boom pivotally attached to the hoist column and the hoist column attached to the stand column via the collar. The boom is manually adjustable for length via extension elements and the boom height is adjustable by activating a hydraulic jack. A wire rope depends from the outward extending end of the boom and is manually adjustable for length by operating a winch. The boom alone or the entire hoist is removable from the stand as desired. The stand includes a stand column and a shaft that pivotally and slidably communicates with the collar on the stand column and also includes a plate for attachment to an engine.

Abstract: A pickup loading hoist for loading and unloading heavy cargo to and from a bed of a pickup without requiring physical exertion by the user and which can be easily disassembled into a compact storage position. The inventive device includes a front frame and a rear frame vertically aligned parallel to one another and removably attachable to the bed of the pickup, an I-beam secured traversely to the front and rear frames and extending a finite distance beyond the rear frame, a sliding member attached to the I-beam, and a winch for manipulating a chain with a hook.

Abstract: A camera crane for use in motion picture and television productions, has a mast on a wheeled chassis. A weight bucket on the chassis around the mast securely holds counterweights used to balance arm. The steering section of the mobile base can be pivoted into a low position, to allow the arm to swing around the mobile base, without interference. A leveling system on the mast levels the mast, regardless of the orientation of the chassis. Outriggers are provided as an accessory to help stabilize the mobile base. Stiffening tubes on the arm stiffen the arm and protect the arm core.

Abstract: A reversible stabilizer pad for use with stabilizer arms of vehicles. The reversible stabilizer pad has a plate with first and second ground contact faces pivotally coupled to the stabilizer arm such that the plate can rotate about the arm to engage the ground surface with either ground contact face. A spring member is provided such that it provides a spring tension that resists rotation of the pad in at least a first direction to prevent the pad from rotating from one contact face to the other contact face due to the inertia of the pad as the stabilizer arm is moved. The spring member also indexes the rotational position of the pad with respect to the arm so that at least one of the contact faces evenly engages a ground surface as the arm is emplaced. In other embodiments, a resilient latch, coupled to one of the stabilizer pad and the arm, contacts the other of the stabilizer pad and the arm, and provides frictional resistance to rotation.

Abstract: A reversible stabilizer pad for use with stabilizer arms of vehicles. The reversible stabilizer pad has a plate with first and second ground contact faces pivotally coupled to the stabilizer arm such that the plate can rotate about the arm to engage the ground surface with either ground contact face. A spring member is provided such that it provides a spring tension that resists rotation of the pad in at least a first direction to prevent the pad from rotating from one contact face to the other contact face due to the inertia of the pad as the stabilizer arm is moved. The spring member also indexes the rotational position of the pad with respect to the arm so that at least one of the contact faces evenly engages a ground surface as the arm is emplaced.

Abstract: Flexibility of operation is added to a vehicle (10) having a vehicle frame (12) with an operator area (18) and front and rear wheels (14), (16), a power tool (32), a pair of outrigger arms (48) pivoted to the frame (12) and hydraulic cylinders (62) extending between the frame (12) and the arms (48) by providing a ground engaging tool (70), (168), (172), (192) mounted on at least one of the arms (58).