Abstract: A rear drive axle assembly includes fixedly attaching right and left axles to right and left rear wheels. Inner ends of the axles residing in a tube and reach in to almost a center of the vehicle, and extend out through self-aligning, pillow block bearings. Sprockets are attached to the axles between outer ends of the tube and the pillow block bearings. Negligible friction between the axles and tube is the only rotational coupling of the axles. The Rigid Tube provides concentricity between the two axles, provides perpendicularity of the drive wheels to the road surface and performs the function of a sleeve bearing.

Abstract: A Coupled Torsion Beam Axle (CTBA) bush may include an axial stiffness control portion which forms a cross section of a bush pipe 3 in a cross-sectional structure of additionally securing a gap, the bush pipe generating a rotation against an external load so that lateral stiffness performance and lateral steer performance are enhanced together; and a front and rear stiffness control portion which forms a bush mass in an X-shaped asymmetric bridge structure, the bush mass forming the bush pipe as an external diameter and forming a bush core as an internal diameter so that handling performance and ride comfort performance are enhanced together.

Abstract: A straddle type electric vehicle comprises a main frame, a motor unit including an electric motor, and a battery that supplies power to the motor unit. The main frame includes a left and right pair of portions. The motor unit is disposed overlapping the main frame in a side view of the vehicle. A motor shaft of the electric motor is disposed above the pivot shaft and rearward in the vehicle longitudinal direction.

Abstract: A suspension system for a vehicle includes a frame mounting bracket for mounting to the vehicle. The suspension includes front and rear rubber torsion axle assemblies. Front and rear lever assemblies are respectively pivotally attached to the vehicle at front and rear lever pivot points. Outer housings of the rubber torsion axle assemblies are each respectively rigidly mounted to the front and rear lever assemblies. A rigid control arm is pivotally connected at one end to the front lever assembly at a front control arm pivot point and its other end is pivotally connected to the rear lever assembly at a rear control arm pivot point. When the suspension assembly encounters a force causing the front lever assembly to rotate in one direction about the front lever pivot point the rigid control arm causes the rear lever assembly to rotate about the rear lever pivot in an opposite direction.

Abstract: A four-wheel independent suspension system for an electric wheelchair includes a chassis, two front wheels each fixed to a front rod respectively, and two rear wheels each fixed to a rear rod respectively. The chassis includes a rail extending in a width direction of the chassis, each of the front and rear rods has one end connected to a square first connecting sleeve, in the first connecting sleeve is disposed a first shock absorber which includes a rectangular outer pipe, and a rectangular inner pipe disposed in and rotated degrees with respect to the outer pipe, the edges of the inner pipe are abutted against the inner surface of the outer pipe, between each of the edges of the inner pipe and the inner space of the outer pipe is disposed an elastic rubber, the inner pipe of each of the first shock absorbers is sleeved on the rail.

Abstract: A motor vehicle arrangement, a motor vehicle and a connecting body for a motor vehicle. A leaf spring is configured to provide suspension of the motor vehicle, and an elastic connecting body is connected to the leaf spring, the elastic connecting body including a device configured to provide a rigid connection to a frame of the motor vehicle, a first elastic connecting body section and a second elastic connecting body section which are inclined with respect to one another and at least partially spaced apart from one another.

Abstract: A preferred embodiment of the present invention includes a triple torsion axle system and kit with various features to help reduce or prevent damage that otherwise may occur with large loads. For example, each axle assembly includes larger diameter caps on the ends of each torsion bar to prevent the bar from pulling out of its outer tube during high side loads. In another example, the outer end of the torsion bar has a rounded surface that is fixed to a swing arm so as to better equalize the stress around the weld joint. Additionally, the triple torsion axle is configured such that when the vehicle is unloaded, the middle axle assembly supports more weight than the two adjacent axle assemblies. However, when the vehicle is loaded, all three axle assemblies provide similar support to the vehicle.

Abstract: A stabilizer bar or stabilizer link in fiber composite construction is of a monolithic construction without fiber interruption. The cross section geometry, the wall thickness, and the fiber orientation vary in axial direction and radial direction such that the requirements defined by the available construction space and the expected loads are fulfilled. The fiber orientation is adjusted axially and radially load-appropriately. The middle section of the stabilizer bar that is primarily torsion-loaded is reinforced with fibers oriented between +/?35° and +/?55° relative to the longitudinal axis and the end members that are primarily bending-loaded are reinforced with fibers oriented between +/?20° and +/?40° relative to the longitudinal axis. In the transitional areas between the middle section and the end members there are transitions between these fiber orientations relatively to the longitudinal axis.

Abstract: A bush is adapted to connect a suspension link with a link support member which is one of a wheel support member and a vehicle body member. The bush includes an inner cylinder which extends in a front and rear direction and which is connected with one of the suspension link and the link support member, an outer cylinder which includes an inside circumferential surface confronting an outside circumferential surface of the inner cylinder and which is connected with the other of the suspension link and the link support member, and an elastic member interposed radially between the inner cylinder and the outer cylinder. The inner cylinder is formed with a bulge portion which projects radially outwards from the outside circumferential surface of the inner cylinder at a middle portion of the inner cylinder in an axial direction of the inner cylinder of the link bush.

Abstract: An independent suspension with no axle is disclosed which includes a hanger and a control arm having opposite first and second ends pivotally mounted to the hanger between the first and second ends. The suspension unit further includes a spindle arm mounted to the first end of the control arm. The suspension unit also includes a jounce spring on the control arm and a rebound spring mounted between the control arm and the hanger. The control arm and hanger are configured such that when the first end of the control arm pivots towards the frame of the vehicle the jounce spring is compressed and the rebound spring is relaxed and when the first end of the control arm moves away from the frame the jounce spring is relaxed and the rebound spring is compressed.

Abstract: A torsion suspension system of the present disclosure includes a vehicle frame and a bar group rotatably coupled to the vehicle frame. In an embodiment, the bar group includes a bolster tube. The bolster tube has an opening through an elongated side of the bolster tube. A torsion bar is positioned through the opening and has opposite ends extending outward of the opening. A plurality of elastomeric cords are positioned adjacent the torsion bar in the opening. The cords are sized to resist and dampen relative rotation between the opening and the torsion bar. The opposite ends of the torsion bar couple with the vehicle frame.

Abstract: The present invention generally relates to the use of EPDM (ethylene-propylene diene monomer) polymer compounds used in place of NR (natural rubber), SBR (styrene butadiene rubber), polyisoprene and other polymers in energy absorption elastomeric systems. In one embodiment a method of continuously manufacturing an EPDM based compound cured via a peroxide based cure system and used in an energy absorption elastomeric system is disclosed. The method includes the steps of forming a continuous part from a compound based on ethylene-propylene diene terpolymer and then curing the part via a continuous process and optionally cutting the final part to the appropriate length. Various advantages are achieved via the use of peroxide cured EPDM as replacements for NR, SBR, polyisoprene and other polymers.

Abstract: A suspension system for a machine is disclosed. The suspension system may have a front torsion axle assembly with a first arm connected at a first end to a first shaft, and a first axle connected to a second end of the first arm. The suspension system may also have a rear torsion axle assembly with a second arm connected at a first end to a second shaft, and a second axle connected to a second end of the second arm. The suspension system may further have a frame connected to an end of the first shaft and an end of the second shaft. The second ends of the first and second arms are oriented within common angular quadrants defined by a coordinate system having an axis passing through the first ends of the first and second arms and aligned with a travel direction of the machine.

Abstract: In a traditional hitched trailer there is no way to adjust the ride height of the trailer. Provided is an angular adjusting mechanism (13) for a suspension system (10) comprising a shaft (12) and a crank arm (20), the shaft (12) having a connecting end (14) connected to the crank arm (20), said angular adjusting mechanism (13) comprising a frusto-comcal shaped surface (16) provided on the connecting end (14) and pointing outwardly from said shaft (12), said surface (16) having an array of first cavities (18) arranged circumferentially, a frusto-comcal bore (22) proximate a first extremity of said crank arm (20), said bore (22) having an array of second cavities (24), said bore (22) being operative to mate with said surface (16) of said connecting end (14), and an interlocking element (30) partly positioned in one of said second cavities (24) and partly positioned in one of said first cavities (18) so as to lock said crank arm (20) at a predetermined angular position with respect to said shaft (12).

Abstract: A preferred embodiment of the present invention includes a triple torsion axle system and kit with various features to help reduce or prevent damage that otherwise may occur with large loads. For example, each axle assembly includes larger diameter caps on the ends of each torsion bar to prevent the bar from pulling out of its outer tube during high side loads. In another example, the outer end of the torsion bar has a rounded surface that is fixed to a swing arm so as to better equalize the stress around the weld joint. Additionally, the triple torsion axle is configured such that when the vehicle is unloaded, the middle axle assembly supports more weight than the two adjacent axle assemblies. However, when the vehicle is loaded, all three axle assemblies provide similar support to the vehicle.

Abstract: A torsion system (20) comprising a housing (24) adapted to be secured to a structural portion of a vehicle. A shaft (23) has a core portion (32) accommodated in the housing (24) and defines concavities (34) in the core portion (32). The shaft (23) has a connector end (30) connected to a crank arm. The connector end (30) protrudes out of the housing (24). Elastomeric members (25,25?) are received in the concavities (34) of the shaft (23). The elastomeric members (25,25?) each have a geometry so as to at least partially fill the concavities (34) and contact an inner surface of the housing (24), whereby a rotation of the crank arm results in a deformation of the elastomeric members (25,25?).

Abstract: A suspension system for a stroller is described. The suspension system may include a rotating damper mechanism used between a stroller frame and a stroller wheel. In one example, apparatus for providing suspension/damping of a stroller includes a first member attached to a stroller frame, a second member disposed co-axially with the first member and operable to rotate relative to the first member, and at least one elastic member (e.g., urethane) positioned between the first and second members for damping motion (e.g., rotational or translational motion) therebetween. In one example, four elastic members are disposed between the first and second members.

Abstract: A work machine is provided having a suspension arrangement between an axle of the machine and a caster wheel assembly. The suspension arrangement comprising a torsion spring assembly. The torsion spring assembly having a first spring housing, a second spring housing, and an inner member. The inner member being integrated directly with a wheel arm of the caster wheel assembly. The first and second spring housings being fastened together around the inner member wherein a plurality of elastomeric members are interposed between the inner member and the first and second spring housings. A torsion spring assembly is provided having a first spring housing, a second spring housing, and an inner member, the first and second spring housings being fastened together around the inner member wherein a plurality of elastomeric members are interposed between the inner member and the first and second spring housings.

Abstract: A trailer wheel assembly for mounting on the rear of a trailer has a structure that reduces or prevents oscillations about a vertical axis arising during high speed towing. The structure includes dual wheels mounted on an axle, a resilient support, and a suspension arm extending rearwardly and downwardly from the resilient support to the axle for the wheels.

Abstract: A motorcycle for supporting a seated rider straddling a saddle atop a frame and above a motor has an improved torsion acting shock absorbing mount for the cantilevered shock absorbing support of at least one of the motorcycle wheels from the frame. In a preferred embodiment, the torsion acting shock absorber includes a square sectioned metal tube, a correspondingly square sectioned metal shaft, and confined compressible rubber rods acting there between. A shock absorbing suspension is disclosed for both the front steered wheel and the rear driven wheel.

Abstract: A suspension arrangement for a work machine includes a frame and a rear axle rigidly carried by and substantially immovable relative to the frame. The suspension arrangement includes a caster wheel assembly having a shaft, a wheel arm, a suspension and a caster wheel. The shaft is pivotably couplable with an outboard end of the rear axle. The caster wheel is coupled with a lower end of the wheel arm. The suspension is in the form of a torsion spring including an outer tube, an inner member, and a plurality of elastomeric members interposed between the outer tube and the inner member. The outer tube is coupled with the shaft, and the inner member is coupled with an upper end of the wheel arm.

Abstract: A torsion system (20) comprising a housing (24) adapted to be secured to a structural portion of a vehicle. A shaft (23) has a core portion (32) accommodated in the housing (24) and defines concavities (34) in the core portion (32). The shaft (23) has a connector end (30) connected to a crank arm. The connector end (30) protrudes out of the housing (24). Elastomeric members (25,25?) are received in the concavities (34) of the shaft (23). The elastomeric members (25,25) each have a geometry so as to at least partially fill the concavities (34) and contact an inner surface of the housing (24), whereby a rotation of the crank arm results in a deformation of the elastomeric members (25,25?).

Abstract: A wheel supporting apparatus includes dampers, ball joints, a knuckle, an upper arm and a lower arm. The dampers are attached to a case of an in-wheel motor in the top-bottom direction of the vehicle's body and are connected respectively to the ball joints. The upper arm and the lower arm have respective one-ends connected to respective dampers via the ball joints and respective other ends pivotably fixed to the vehicle's body. The knuckle is connected to the ball joints to rotatably support a wheel hub via hub bearings.

Abstract: A suspension bushing is provided in a connection between a lower arm supporting a drive front wheel and a subframe. The suspension bushing includes an inner cylindrical portion secured to the subframe, an outer cylindrical portion secured to the lower arm, and a rubber resilient member joining the inner and outer cylindrical portions. A protrusion, provided on the rubber resilient member as a region receiving a load during acceleration of the vehicle, is arranged to have a greater spring constant than a portion of the rubber resilient member surrounding a second opening section provided as a region receiving a load during braking of the vehicle.

Abstract: A vehicle having a suspension assembly including a first torsion member connectable to a frame along a first axis and a second torsion member operatively coupled to the first torsion member along a second axis. A plurality of wheel arms are coupled to the second torsion member, which, in turn, are each coupled to a wheel shaft. This type of vehicle has enhanced suspension.

Abstract: A wheeled vehicle includes a front steered wheel, a rear driven wheel, and a support member that supports a rider. A main structural tube is disposed substantially horizontally along a longitudinal axis for supporting the front steered wheel at a forward end of the main structural tube, for supporting the rear driven wheel at a rear end of the main structural tube, and for supporting a rider who controls and steers the wheeled vehicle. An improved torsion acting shock absorbing mount is disclosed for the cantilevered shock absorbing support of at least one of the vehicle wheels from the frame. The torsion acting shock absorber includes a square sectioned metal tube, a correspondingly square sectioned metal shaft, and confined compressible resilient compound rods acting there between. The torsion acting shock absorber is attached at right angles to the main structural tube.

Abstract: It is a torsion beam suspension S including a pair of lateral trailing members, each of which has a front end portion 1a pivotally supported by a vehicle body and also has a rear end portion 1b adapted to suspend wheels, and a torsion beam 2 adapted to have an open face, in which a vehicle front side or a vehicle rear side thereof is opened, and to extend in a lateral direction of a vehicle. Intermediate portions 1c of the pair of trailing members 1 are respectively bonded to both end portions 2a of the torsion beam 2. On an inner side wall 1d of each of the trailing members 1, a patch member 4 connecting a corresponding one of the trailing members 1 to the torsion beam 2 is disposed.

Abstract: In a chassis suspension comprising a spring structure for oscillation isolation, which is mounted at least at one end in a bearing and provided with a spring movement limiting device, a buckling element forming a support for the spring structure is arranged in a housing consisting of two telescopic cylinders providing for longitudinal and transverse movement limits for the buckling element.

Abstract: In the torsion beam axle suspension of the present invention, by providing mounts formed on one end of each of trailing arms with a three-dimensional slant angle, when a transverse force is applied to a turning outer wheel at a rear suspension during cornering of a vehicle, toe-in characteristics are induced, and at the same time a transverse rigidity of the mounts can be increased.

Abstract: A torsion spring cartridge for an axle tube. The torsion spring cartridge includes a bearing housing configured to be removably mounted in an non-rotating relation in the axle tube. A torque arm including a torque hub defining a plurality of pockets and mounted for reciprocal, rotatable motion in the bearing housing. A draw bar is coupled to the torque hub. A counter torque hub is configured to be positioned in the axle tube in a spaced relation to the torque hub and in a non-rotating relation to the axle tube. The counter torque hub is composed of a plurality of plates configured to receive the draw bar and defining a plurality of pockets. At least two torsion bars are mounted between the torque arm and the counter torque hub for biasing the torque arm to a neutral position. The torsion bars are not fixedly mounted in the hub pockets.

Abstract: Mechanisms for preventing sway and distributing uneven forces applied on an axle in a moving vehicle are described. An axle tube is segmented into three components: two end segments and a middle segment. Spindle shafts extend from the end segments into the middle segment but do not come into direct contact with one another. Portions of the spindle shaft that are in the middle segment are press-fitted in the middle segment using inserts. The middle segment of the axle tube free to rotate. The inserts allow for interaction between both ends of the spindle shafts such that a rotational force applied to one spindle shaft is communicated to another spindle shaft. The amount of anti-sway capability desired can be calibrated by adjusting the length of the inserts and shafts in the axle tube and the materials and density of the various components.

Abstract: A linear or longitudinal torsion axle where the torsion shaft extends parallel to the longitudinal extent of the vehicle to which the torsion axle is attached. The torsion axle includes two torsion assemblies with the torsion shaft extending into and being supported by both torsion assemblies. Each torsion assembly has a housing enclosing a plurality of resilient torsion rods spaced about the outside of the torsion shaft. The torsion shaft is fixed to a wishbone connector that is positioned between the two torsion assemblies. A wheel spindle is fixed to an outer end of the wishbone connector to accept a wheel and tire assembly.

Abstract: The present invention relates to a suspension assembly for a carriage. The suspension assembly, in one embodiment, includes a first torsion member connectable to a carriage frame along a first axis and a second torsion member operatively coupled to the first torsion member along a second axis. A plurality of wheel arms coupled to the second torsion member, which, in turn, are each coupled to wheel spindle. This type of suspension assembly provides carriages with enhanced suspension and reduces damage to carriages during operation.

Abstract: A variable rate bushing passively controls the stiffness of a stabilizer bar. During normal vehicle operation, the stabilizer bar is compliant. As twist increase, the resistance increases. In one embodiment, the variable rate bushing includes at least one void which compresses as the vehicle turns. As the stabilizer bar axially twists, the void compresses and the rate of the bushing increases, reducing axial twist and increasing stiffness of the stabilizer bar. In one embodiment, the voids are teardrop shaped, arc shaped, or bone shaped. Alternatively, the bushing includes an inner layer of softer material and an outer layer of harder material to control stabilizer bar stiffness. Also, the bushing may include a molded insert made of a hard material inserted into a softer material to control the stiffness of the stabilizer bar.

Abstract: A suspension bar assembly for an automotive vehicle includes a suspension bar having a bushing, a bushing retainer that exerts radially and axially compressive forces onto the bushing such that the bushing is in frictional engagement with the suspension bar, thereby preventing relative movement of the bushing and the suspension bar, and a mounting bracket that is adapted to connect the suspension bar to the automotive vehicle. A method of inducing a pre-load onto a bushing that supports a bar includes: providing a bar, placing a bushing onto the bar, placing a bushing retainer onto the bushing, and compressing the bushing axially and radially within the bushing retainer.

Abstract: A multi-stage torsion axle that has a first stage torsion assembly positioned within a second stage torsion assembly. The first stage torsion assembly has a square first stage shaft within a first elastomeric bushing. The second stage torsion assembly has a square tubular second stage shaft within a second elastomeric bushing, the second stage shaft fitting around the first stage torsion assembly. A hollow square tubular housing fits around the second stage assembly. The resilience of the first stage torsion assembly is less than the resilience of the second stage torsion assembly. A stop mechanism directly transfers torque from the first stage shaft to the second stage shaft when the first stage has rotated more than a predetermined amount relative to the second stage shaft.

Abstract: A connecting component connecting two members, such as a suspension component and a vehicle component, dampens vibrations and produces springing forces. The connecting component is formed by a steel strip including a plurality of holes. A sealing strip is secured to the upper surface of the steel strip to contain fluid for damping, and springing strips are secured to the upper surface of the steel strip to provide for springing forces. The steel strip is rolled to form the connecting component, trapping the fluid between the sealing strips. As the connecting component is a linking element with several degrees of freedom, different springing and damping rates are possible at each degree of freedom.

Abstract: A load hauling trailer assembly adapted for on and off road use includes a towable mobile chassis, a storage container body mounted on the mobile chassis and having an open top, a top cover having an outer side and being mountable on the storage container body and movable between opened and closed positions relative to the open top of the storage container body, and a carrier rack mounted on the outer side of the top cover and adapted to carry gear thereon when the top cover is mounted on the storage container body and moved to the closed position. The mobile chassis includes a frame structure, a pair of wheel subassemblies, and suspension and frame structure height adjustment subassemblies mounted to and extending transversely of the frame structure and mounting the wheel subassemblies to the frame structure.

Abstract: A multi-stage torsion axle that has a first stage torsion assembly positioned within a second stage torsion assembly. The first stage torsion assembly has a square first stage shaft within a first elastomeric bushing. The second stage torsion assembly has a square tubular second stage shaft within a second elastomeric bushing, the second stage shaft fitting around the first stage torsion assembly. A hollow square tubular housing fits around the second stage assembly. The resilience of the first stage torsion assembly is less than the resilience of the second stage torsion assembly. A stop mechanism directly transfers torque from the first stage shaft to the second stage shaft when the first stage has rotated more than a predetermined amount relative to the second stage shaft.

Abstract: In a coupling of an axle member to a vehicle leaf spring or a longitudinal link, the axle member is coupled to a vehicle leaf spring or a longitudinal link with spring/damper elements therebetween. Arranged between the axle member and the vehicle leaf spring or the longitudinal link are at least two spring/damper elements, which, in the direction of travel, are arranged in front of and behind the section of the axle member to which the leaf spring or the longitudinal link is coupled. The stiffness of the spring/damper elements is greater in the horizontal directions than in the vertical direction. Vibrations of the body of a vehicle with a rigid axle that are caused by the vehicle drive, irregularities in the roadway and unbalance of the wheels are minimized.

Abstract: An axle assembly for a vehicle or a trailer includes an outer housing, an axle shaft and a plurality of bushings. The axle shaft is a single piece unitary construction which includes an activator shaft portion, a trailing arm portion and a spindle portion. The outer housing is adapted to be secured to the frame of the vehicle or trailer while the spindle portion is adapted to support a wheel assembly of the vehicle or trailer. Another embodiment has a single piece unitary axle which includes an activator shaft portion and a trailing arm portion. A spindle is secured to the trailing arm portion to complete the axle assembly.

Abstract: A variable rate bushing passively controls the stiffness of a stabilizer bar. During normal vehicle operation, the stabilizer bar is compliant. As twist increase, the resistance increases. In one embodiment, the variable rate bushing includes at least one void which compresses as the vehicle turns. As the stabilizer bar axially twists, the void compresses and the rate of the bushing increases, reducing axial twist and increasing stiffness of the stabilizer bar. In one embodiment, the voids are teardrop shaped, arc shaped, or bone shaped. Alternatively, the bushing includes an inner layer of softer material and an outer layer of harder material to control stabilizer bar stiffness. Also, the bushing may include a molded insert made of a hard material inserted into a softer material to control the stiffness of the stabilizer bar.

Abstract: A 6×4 utility vehicle utilizes a middle axle (21) which is suspended to the frame of the vehicle by means of a suspension assembly (22). The suspension assembly (22) allows the vehicle (10) to have a better ride quality, ride predictability, increased traction and better maneuverability.

Abstract: An articulating vehicle (10) includes a front axle (21) operatively connected to a front frame (40) and a rear axle (21) is operatively connected to the rear frame (30). A torsional joint (50) has an inner shaft member (51) operatively connected one of the frames and an outer hollow member (52) operatively connected to the other of the frames. An elastomeric material (53) is positioned between the inner member (51) and outer member (52). The elastic material (53) connects the inner and outer members, whereby the frames may rotate relative to each other along the longitudinal axis as the elastomeric member (53) is compressed and resiliently resists rotation between the frames (30 and 40). A torsional energy absorption suspension is provided for one of the wheels. The suspension includes a torsional joint (50), a single A-frame member (94). A lever arm (95) may also be utilized to vary the preload on the torsional joint (50).

Abstract: Attachment assemblies for attaching suspension components within a vehicle suspension assembly are provided. First, a bracket assembly having an axle beam utilizes a one piece bracket to improve the structural rigidity of the axle beam and provides the attachment points for the control rods, brake chambers, and air springs. Next, a torsion attachment assembly attaches the torsion assembly to suspension supports using a bushing that fits within a first cylindrical bore in the torsion assembly. A plug is received within a hole in the support and secured to the support by fasteners. A shaft on the plug fits within a second cylindrical bore in the bushing. In this way, the torsion assembly is free to rotate about the plug and the torsion assembly can be easily disconnected from the supports when the fasteners are removed. Finally, a control rod attachment assembly utilizes a pin having tapered ends and a fastening device to secure a control rod end to a supporting structure.

Abstract: An articulated self-propelled agricultural machine, in particular, a forage harvester, whose group of rear axles comprise two frame parts having regions thereof arranged one above the other and the frame parts being coupled to one another by a bearing which limits the angle of rotation. One of these two frame parts is coupled to the front axle of the forage harvester by an articulated joint, while one frame part is coupled to the optionally driveable rear axle of the forage harvester via an elastic joint.

Abstract: A wheelchair suspension system includes suspension members that interact to cause a positive movement of the suspension members to urge the drive wheels into contact with the ground. The resilient suspension system comprises a drive wheel suspension member for supporting a drive wheel and a front wheel suspension member for supporting a front wheel. The drive wheel suspension member and the front wheel suspension member are each adapted to be movably attached to the wheelchair frame. Each suspension member cooperates with a resilient element to resist movement of the suspension members relative to the frame. The suspension members are adapted to cooperate with each other in response to movement of the suspension members relative to the frame to urge the drive wheel into contact with the ground.

Abstract: Attachment assemblies for attaching suspension components within a vehicle suspension assembly are provided. First, a bracket assembly having an axle beam utilizes a one piece bracket to improve the structural rigidity of the axle beam and provides the attachment points for the control rods, brake chambers, and air springs. Next, a torsion attachment assembly attaches the torsion assembly to suspension supports using a bushing that fits within a first cylindrical bore in the torsion assembly. A plug is received within a hole in the support and secured to the support by fasteners. A shaft on the plug fits within a second cylindrical bore in the bushing. In this way, the torsion assembly is free to rotate about the plug and the torsion assembly can be easily disconnected from the supports when the fasteners are removed. Finally, a control rod attachment assembly utilizes a pin having tapered ends and a fastening device to secure a control rod end to a supporting structure.