Abstract: An isolator performance data logging system comprising a displacement unit for measuring a displacement of the isolator. the displacement unit comprises a displacement sensor housing fixable relative to a mitigated end of the isolator, a target fixable relative to an unmitigated end of the isolator. A displacement sensor is located within the displacement sensor housing for measuring a displacement of the target relative to the displacement sensor. A first accelerometer unit is fixable relative to the mitigated end of the isolator. A second accelerometer unit is fixable relative to the unmitigated end of the isolator.

Abstract: A flexible frame for a high clearance agricultural vehicle has left and right frame rails, an axle suspended beneath the frame rails, and a suspension system coupling the axle to the frame rails. Left and right vertical mounts are coupled to the frame rails. Upper and lower torque rods couple the axle to the vertical mounts with brackets. The suspension system also has a cross torque rod having a left end coupled to an inward facing bracket on the left vertical mount and a right end coupled to an inward facing bracket on the right vertical mount. Each of the upper, lower and cross torque rods are coupled to its respective torque rod brackets with rotatable joints. The rotatable joint permits angular rotation of the torque rod about its torque rod bracket.

Abstract: The invention relates to a wheel suspension for vehicles, with a vehicle body and wheels articulated on the vehicle body by means of wheel suspension parts. The wheel suspension parts of each wheel oscillate during the driving mode, and contain a wheel carrier supporting the wheel rotatably about a wheel axle and links connecting said wheel carrier to the vehicle body. The relative movement between the vehicle body and wheel suspension parts can be detected by means of detecting means. Articulation positions of the same and/or other wheel suspension parts can be automatically changed by at least one actuating means depending on the relative movements detected by the detecting means. At least one first and at least one second detecting means are respectively assigned to first and second vehicle sides of a vehicle axle.

Abstract: A jounce bumper can include a mounting wall and at least one helical thread. An end member can be at least partially formed from a quantity of polymeric material and can include a base wall and at least one helical thread integrally formed from the quantity of polymeric material. The end member and the jounce bumper can form a gas spring assembly. A method of assembly is also included.

Abstract: A vehicle wheel suspension is provided having a hydraulic vibration damper, which is connected in parallel to a suspension spring which proportionally supports the vehicle body. A rebound spring is provided, which preferably and typically becomes effective in the event of larger spring deflection distances. The support point of the rebound spring is displaceable in relation to the damper housing by way of a spring support piston, which is provided therein and is displaceable by fluid externally supplied with pressure via pump. In this case, the pump is connected to a pressure accumulator for the fluid and delivers fluid out of the pressure accumulator into the damper housing or out of the damper housing back into the pressure accumulator. The absolute value of the spring constant of the pressure accumulator is at least in the order of magnitude of the spring constant of the associated suspension spring or springs, or is greater.

Abstract: In a vehicle-height adjustment apparatus of a motorcycle having the hydraulic jack attached to the damper, damping force characteristics of a damper are stabilized, the influence of the charged gas pressure of an oil reservoir chamber is eliminated, and the sealing performance of a hydraulic jack is reduced. In the vehicle-height adjustment apparatus of a motorcycle, a back pressure chamber is provided on a side opposite to a jack chamber, with a plunger being interposed therebetween inside a hydraulic jack, and this back pressure chamber is communicated with a hydraulic chamber inside a damper tube.

Abstract: Methods and apparatus for converting an OEM ladder frame chassis. Various embodiments include modifying the front and rear suspensions to allow increased lowering of the payload section and cab sections, and further to incorporate a payload section having a lowered floor.

Abstract: A shock absorber for a vehicle having a damper and a first and second springs mounted coaxially around the damper and a preload adjuster for partially compressing at least one of the springs independently of the compression stroke. In one embodiment the preload adjuster is remotely controllable. In another embodiment the shock absorber includes an additional mechanism for preloading at least one of the springs.

Abstract: A cover member having plural peak portions and plural trough portions, and freely stretched and shrunk in an array direction of the plural peak portions and the plural trough portions or freely bent, the cover member includes: a hollow part formed in each of the plural peak portions, the hollow part being hollowed toward an inner side from a peak of each of the plural peak portions, being formed in a circumferential direction, and having edge parts, a bottom part and side parts located between the edge parts and the bottom part. The edge parts of the hollow part are brought into contact with each other before the side parts of the hollow part are brought into contact with each other, when at least one of the plural peak portions is subjected to force in a direction intersecting with the array direction from an outside.

Abstract: Methods and apparatus for converting an OEM ladder frame chassis. Various embodiments include modifying the front and rear suspensions to allow increased lowering of the payload section and cab sections, and further to incorporate a payload section having a lowered floor.

Abstract: A non-torque reactive trailing arm air suspension system for vehicle driven axle uses a spherical joint between trailing arm and axle as one of four nodes of four bar mechanism which is disposed on both sides of vehicle that maintains substantially constant pinion shaft angle during vehicle operation. The trailing arm is a rolled and formed beam of spring steel and utilizes a vertically resilient length between hanger bracket joint and axle joint to absorb road shocks.

Abstract: A solid state cup device that assists a coil over arrangement of an air suspension system for at least one motor vehicle wheel is disclosed. The device comprises at least one outer cup having a plurality of o-rings placed on the coil over arrangement. The system further includes at least one inner cup having a plurality of smaller o-rings, and which inner cup is placed on top of at least one spring. The at least one outer cup further includes at least one c-ring designed to prevent the at least one inner cup from sliding out of the at least one outer cup. With air injected into the at least one outer cup, the at least one inner cup may press down the at least one spring to provide tension on the at least one spring resulting in a smoother lift and lowering of the at least one motor vehicle.

Abstract: A shock absorber for a vehicle having a damper and a first and second springs mounted coaxially around the damper and a preload adjuster for partially compressing at least one of the springs independently of the compression stroke. In one embodiment the preload adjuster is remotely controllable. In another embodiment the shock absorber includes an additional mechanism for preloading at least one of the springs.

Abstract: A non-torque reactive trailing arm air suspension system for vehicle driven axle using a spherical joint means between trailing arm and axle as one of four nodes of four bar mechanism disposed on both sides of vehicle that maintains substantially constant pinion shaft angle during vehicle operation. Four bars L1, L2, L3, L4 are formed by 1) hanger bracket, 2) link rod, 3) driven axle with its attachments and 4) trailing arm respectively. In one of the preferred embodiments as disposed on one vehicle side, first end (42) of trailing arm (10) is pivotally connected to top of hanger bracket (06) which is attached to frame rail (04). Mid-portion (44) of trailing arm is “spherically” connected to axle top. Air spring (24) and shock absorber (26) are disposed between second end (46) of trailing arm and frame rail (04). One end of link rod (14) is pivotally connected to hanger bracket bottom and other end is pivotally connected to axle bottom.

Abstract: A wheel suspension for a motor vehicle, in particular for an automobile, is provided. The wheel suspension includes a wheel carrier and at least one damper element, which has a first element that can be fastened on the wheel carrier and a second element fastened to a suspension strut dome. The suspension strut dome together with the damper element forms a pre-assembled structural unit.

Abstract: A vehicular fluid damper system comprises a piston-type actuator, a static fluid damper, first and second flow passages, a first flow control valve, and a controller. The piston-type actuator comprises a cylinder and a piston that cooperate with one another to define first and second chambers. The static fluid damper defines first, second, and third dampening chambers. The first and second dampening chambers are in fluid communication with one another. The second and third dampening chambers are in fluid communication with each other. The first flow passage is in fluid communication with the first dampening chamber and the first chamber. The second flow passage is in fluid communication with the second dampening chamber and the second chamber. The controller is configured to facilitate operation of the first flow control valve to change a flow rate of fluid through the first flow passage.

Abstract: A displaceable spring seat (2) supporting one end of a vehicle suspension spring (S) is supported by a fluid pressure of an operation chamber (J). A screw pump (P) supplying a working fluid to the operation chamber (J) includes a pump chamber (L) defined within a cylinder (10) by a piston (11, a nut (13) formed integrally with the piston (11), and a screw shaft (14) screwed into the nut (13). A guide member (16) fixed to the cylinder (10) is fitted onto an outer circumference of the nut (13) or the piston (11) such that when the screw shaft (14) is driven to rotate, the piston (11) is fed via the nut (13). The guide member (16) formed from a non-metallic, low-friction material, reduces a driving resistance of the piston (11) and improves a durability of a screw portion between the nut (13) and the screw shaft (14).

Abstract: An axle assembly for a vehicle is described, in which the axle assembly has a suspension arm for accommodating an axle of the vehicle and a damper. The damper is coupled to a first engagement point of the suspension arm. The first engagement point is situated on the suspension arm so that the damper may be situated outside an installation space for axle components located between the suspension arm and a chassis of the vehicle.

Abstract: A suspension system suspends an axle from a vehicle undercarriage. A mounting mounts a trailing arm for pivotal motion about a horizontal axis passing through a proximal end of the trailing arm perpendicular to the direction of vehicle travel while the vehicle is being steered in a straight line. An air spring is disposed between the undercarriage and a distal end of the trailing arm. A fastening holds fast together the middle of a resiliently flexible locating strap, the middle of the trailing arm, and the axle. A front locating bracket and a rear locating bracket fastened to the undercarriage respectively locate the front end of the locating strap horizontally in a direction parallel to the horizontal axis about which the trailing arm pivots and the rear end of the locating strap horizontally in a direction parallel to the horizontal axis about which the trailing arm pivots.

Abstract: A suspension system for use with a vehicle comprising a control arm having an upper rear arm and a spring mounting plate integrally formed as a single member, a spindle extending outwardly from the upper rear arm, an air spring adapted to be mounted intermediate the spring plate and the vehicle, and a pivot assembly for pivotally mounting the control arm to the vehicle whereby the pivot assembly has a fist axis of rotation.

Abstract: The invention relates to a wheel suspension for motor vehicles, with a suspension strut which is formed from a shock absorber and a bearing spring, the bearing spring being supported by way of spring plates on the body of the motor vehicle and on the tube of the shock absorber, and a spring plate being movably guided relative to the body and able to be moved axially by means of an actuator relative to the shock absorber tube, and the suspension strut having a preloaded spring with a spring force which is opposite the bearing spring, which is supported on the body of the motor vehicle and also on the movable spring plate of the bearing spring. According to the invention, the actuator is located outside, in particular radially outside the suspension strut.

Abstract: A suspension system for use on off-road trailers may be an independent air suspension system that may provide ample wheel travel and stability to keep the wheels on the ground through rough and uneven terrain. Conventional suspension systems may lack adequate wheel travel, may bounce too much, or may not be soft enough. The suspension system of the present invention may use an air bag to normalize the suspension for varying weights of the trailer load, allowing proper suspension for both heavy and light loads.

Abstract: A damper unit and its employment as part of the suspension system for a vehicle are disclosed. A vehicle of the kind having wheels arranged in left-right pairs has a sprung mass and left and right unsprung masses associated with left and right wheels of a said left-right pair. Respective left and right damper units are mounted between the respective left and right unsprung masses and the sprung mass. Each damper unit has a damper housing defining first and second generally cylindrical chambers therewithin having a common axis. The first and second chambers are separated from each other in the axial direction by an intermediate wall. The first chamber has a first axial end wall at its end remote from the intermediate wall, and the second chamber has a second axial end wall at its end remote from the intermediate wall. A first piston is slidable in sealing engagement with the interior of the first chamber. A second piston is slidable in sealing engagement with the interior of the second chamber.

Abstract: The present invention relates to a membrane for secondary air suspension of a land or rail vehicle, in particular of heavy truck or passenger wagon type, this secondary suspension incorporating it, such a vehicle which is provided therewith, and the method for manufacturing this membrane. This substantially toroidal membrane (103) comprises two attachment areas (110) and at least one corded layer (106) of fabric and/or metallic threads which is situated between two radially internal (104) and external (105) elastomer layers and which extends between these attachment areas. According to the invention, said at least one corded layer has its or each of its thread(s) individually sheathed by an elastomer sheath compatible with the internal and external layers.

Abstract: A vehicle height adjustment suspension device provides for both automatic and selective raising and lowering of a supported portion of a vehicle frame relative a ground surface, while also providing shock absorption. The device includes a suspension assembly for absorbing shocks mounted on a rotatable threaded screw connected to a motor and extending into the suspension assembly. The assembly may be extended and retracted on the screw by rotating the screw in first and second directions to raise and lower the supported portion while the shock absorber assembly simultaneously provides shock absorption capability.

Abstract: A vehicle brake system includes: brakes provided for respective right-side wheel, left-side wheel, front wheel and rear wheel of a vehicle, and configured to restrain rotations of the respective wheels by activations of brake actuators of the brakes; and at least two energy sources independent from each other and configured to supply energy to the brake actuators. A first brake line includes (a) a first energy source as one of the at least two energy sources and (b) one of the brake actuators provided for the front wheel and activatable by the energy supplied from the first energy source. A second brake line includes (c) a second energy source as one of the at least two energy sources and (d) three of the brake actuators provided for the respective right-side, left-side and rear wheels and activatable by the energy supplied from the second energy source.

Abstract: A vehicle hydraulic suspension system has front left (15), front right (16), rear left (18) and rear right (17) wheel ram. There is a mode decoupling device (100) with first (129), second (130), third (132) and fourth (131) balance chambers formed by a cylinder/piston rod assembly (124,125,126). The compression chamber (45) of the front left wheel ram (15) is in fluid communication with the first balance chamber (129), the compression chamber (46) of the front right wheel ram (16) is in fluid communication with the second balance chamber (130), the compression chamber (48) of the rear left wheel ram (18) is in fluid communication with the third balance chamber (132), and the compression chamber (47) of the rear right wheel ram (17) is in fluid communication with the fourth balance chamber (131). There are also front and rear resilient vehicle support means between vehicle body and the wheel assemblies.

Abstract: An in-the-wheel hub-less suspension system for use on a vehicle is disclosed. The suspension mechanism has at least two vertical guides; at least two mounting brackets to be affixed to diametrically opposing positions on the rim of the wheel to which the suspension system is to be attached; at least one shock absorber unit; and one spring for each vertical guide. Each of the vertical guides extends through one of the at least one shock absorber units, wherein the spring for each vertical guide is located underneath the at least one shock absorber unit and encloses the vertical guide; and wherein each end of each of the at least two vertical guides engages with the corresponding mounting bracket.

Abstract: A suspension system for a vehicle includes a plurality of spring assemblies, each spring assembly including, in combination, a coil spring and an air spring arranged around a common central axis, and being mounted above the rear axle of the vehicle. A method for improving a vehicle's ride, handling, and load-carrying capability includes providing the foregoing suspension system for which respective coil springs are positioned within respective housings; partially inflating respective air springs thereby causing respective coil springs to partially collapse into their housings when improvement to the ride is desired in combination with improvement in load-carrying ability; and completely inflating respective air springs thereby causing respective coil springs of the plurality of spring assemblies to substantially completely collapse into their housings when maximum load-carrying ability is desired.

Abstract: An axle assembly for a vehicle is described, in which the axle assembly has a suspension arm for accommodating an axle of the vehicle and a damper. The damper is coupled to a first engagement point of the suspension arm. The first engagement point is situated on the suspension arm so that the damper may be situated outside an installation space for axle components located between the suspension arm and a chassis of the vehicle.

Abstract: A suspension device (S) of the present invention comprises: an actuator (A) including a motion conversion mechanism (T) for converting a linear motion to a rotational motion, and a motor (M) connected to a rotational member (1) which performs the rotational motion in the motion conversion mechanism (T); a fluid pressure damper (D) connected to a linear motion member (2) which performs the linear motion in the motion conversion mechanism (T); a mount (22) connected to a sprung member of a vehicle; and suspension springs (38) and (38) interposed between the mount (22) and an unsprung member, the actuator (A) being elastically supported by the mount (22) through a rubber vibration isolator (21).

Abstract: A stabilizer arrangement is provided for a motor vehicle with a stabilizer (1), which is connected to the vehicle chassis and which is connected, on each side of the vehicle, to a spring-mounted wheel carrier part with a piston-cylinder unit (4, 4?). Each of the piston-cylinder units (4, 4?) includes at least one piston (8), which is movably arranged in a cylinder (7) and which splits the cylinder into a first and a second cylinder chamber (7a, 7b). The cylinder chambers are separate from one another. The piston-cylinder units (4, 4?) are respectively connected in an articulated manner, at one end, to an end of the stabilizer 1 and, at the other end, to a spring-mounted wheel carrier part. The piston (8) has a connecting line (14) that connects the first and second cylinder chambers. The respective connecting line (14) has a nonreturn valve (15), which acts in one direction. The piston (8) can be moved into at least one end position.

Abstract: An axle/suspension system for a heavy-duty vehicle, in which the vehicle has a frame that includes a pair of hangers. The axle/suspension system is attached to the hangers, and includes an axle and a pair of suspension assemblies. Each of the suspension assemblies includes an air spring and at least one spring member. The spring member includes a first attachment portion and a second attachment portion. The first attachment portion is generally rigidly connected to the hanger via a clamped connection, and the second attachment portion is operatively connected to the axle. The spring member, connected in this manner, reduces or eliminates dock walk when a cargo transfer vehicle enters the heavy-duty vehicle, and also reduces or eliminates rebound when the cargo transfer vehicle exits the vehicle. The spring member is also capable of being tuned to a predetermined stiffness that is sufficient to control heavy-duty vehicle roll forces.

Abstract: A suspension system for a vehicle has an upper control arm and an associated lower control arm for mounting a wheel on the vehicle body. A hydro-pneumatic spring is connected between one of the control arms and the vehicle body. A compensating spring is associated with the hydro-pneumatic spring and is operable to act in opposition to the force exerted by the hydro-pneumatic spring as the hydro-pneumatic spring approaches full extension.

Abstract: A vehicle suspension system includes a pair of suspension assemblies mounted on a pair of spaced vehicle frame members for supporting a vehicle body on the vehicle wheels. A torsion axle extends between the pair of suspension assemblies and terminates in a pair of stub shafts. The axle is mounted on a pair of spaced frame brackets attached to the vehicle frame. An air spring extends between the vehicle frame and an outer end of a support arm pivotally mounted on each end of the torsion axle. The stub shafts are supported within an outer tube of the torsion axle by a plurality of elastomeric members. One end of each stub shaft is connected to a spindle arm which has a spindle extending from an opposite end of the arm.

Abstract: An integrated trailer suspension damper assembly for a trailer or towed vehicle that includes a trailer suspension damper, an air spring concentrically attached to an upper portion of the trailer suspension damper with an end rotatably attached to a trailer frame, a yoke having an upper end fixedly attached to a lower portion of the trailer suspension damper and a lower end constructed to be rotatably attached to a lower wishbone control arm, and a controller for controlling the trailer suspension damper assembly. The integrated trailer air spring damper assembly is constructed to maintain a uniform spring rate of said integrated suspension damper assembly to provide a lateral roll stability.

Abstract: A composite suspension system for a vehicle includes a mechanical suspension system supporting the body of the vehicle with respect to an axle and a pneumatic suspension system to selectively provide support for the body relative to the axle. Under heavy loads, the pneumatic suspension system may be inflated to support the body relative to the axle. When not under heavy loads the pneumatic suspension system may be deflated so as not to interfere with the support provided by the mechanical suspension system. A control system regulates a compressor connected to the pneumatic suspension system to inflate the same. The control system also regulates access of the pneumatic suspension system to a vacuum source to deflate the same.

Abstract: A wheel suspension includes a working cylinder, a main spring in parallel with the working cylinder, and a piston rod extending from the working cylinder and having a longitudinal axis, the piston rod having fixed thereto a piston and a mount for fixing the piston rod against movement with respect to a vehicle body. The piston is mounted with freedom of axial movement in an adjusting cylinder, the piston dividing the cylinder into a space above the piston and a space below the piston, and an additional spring is located on the longitudinal axis for supporting the adjusting cylinder against the working cylinder. A shut-off element is located in a flow connection connecting the space above the piston to the space below the piston, whereby movement of the piston in the adjusting cylinder can be blocked when the vehicle rolls.

Abstract: A vehicle suspension system includes a pair of suspension assemblies mounted on a pair of spaced vehicle frame members for supporting a vehicle body on the vehicle wheels. A torsion axle extends between the pair of suspension assemblies and terminates in a pair of stub shafts. The axle is mounted on a pair of spaced frame bars attached to the vehicle frame. An air spring extends between the vehicle frame and an outer end of a support arm mounted on the torsion axle. The stub shafts are supported within an outer tube of the torsion axle by a plurality of elastomeric members. One end of each stub shaft is connected to a spindle arm which has a spindle extending from an opposite end of the arm. The outer tube of the torsion axle pivotally supports the air spring support arm and the axis of the torsion axle is coaxial with the pivot axis of the air spring support arm to provide a more compact and sturdy suspension assembly.

Abstract: A mounting bracket assembly capable of operatively engaging an associated jounce tongue of an associated vehicle suspension and supporting a supplemental air spring assembly in spaced relation to an associated sprung or unsprung mass of the associated vehicle. The mounting bracket assembly can include a first bracket supported on the associated jounce tongue and a second bracket supported on the first bracket. A supplemental suspension system can include an air spring assembly and a mounting spring assembly. A supplemental suspension system kit is also included.

Abstract: A composite suspension system for a vehicle includes a mechanical suspension system supporting the body of the vehicle with respect to an axle and a pneumatic suspension system to selectively provide support for the body relative to the axle. Under heavy loads, the pneumatic suspension system may be inflated to support the body relative to the axle. When not under heavy loads the pneumatic suspension system may be deflated so as not to interfere with the support provided by the mechanical suspension system. A control system regulates a compressor connected to the pneumatic suspension system to inflate the same. The control system also regulates access of the pneumatic suspension system to a vacuum source to deflate the same.

Abstract: Method and arrangement for providing a suspension for a wheel on a motor vehicle. The wheel suspension includes a stub axle (36, 37) connected to a stub axle carrier (34, 35), a suspension arm (18, 19) which connects the stub axle carrier to the vehicle, and a stabilizer bar (9) fixed transversely to the longitudinal axis of the vehicle. The suspension arm (18, 19) is fixed against rotation to an outer end (14, 15) of the stabilizer bar and rotatably attached in at least one position (22, 23) axially separated from the outer end of the stabilizer bar. The invention also relates to a vehicle provided with such an arrangement.

Abstract: A vehicle hydraulic suspension system has front left (15), front right (16), rear left (18) and rear right (17) wheel ram. There is a mode decoupling device (100) with first (129), second (130), third (132) and fourth (131) balance chambers formed by a cylinder/piston rod assembly (124,125,126). The compression chamber (45) of the front left wheel ram (15) is in fluid communication with the first balance chamber (129), the compression chamber (46) of the front right wheel ram (16) is in fluid communication with the second balance chamber (130), the compression chamber (48) of the rear left wheel ram (18) is in fluid communication with the third balance chamber (132), and the compression chamber (47) of the rear right wheel ram (17) is in fluid communication with the fourth balance chamber (131). There are also front and rear resilient vehicle support means between vehicle body and the wheel assemblies.

Abstract: Vehicle with a vehicle body (7); at least two wheels (3, 4), which are connected to the vehicle body (7) and are movable in relation thereto; a stabilizer (10), which has two legs (11, 12) connected mechanically to one another via a torsion spring (13); two actuators (16, 17), via which the legs (11, 12) are coupled with the wheels (3, 4); and a control means (21), by means of which the coupling characteristic of the actuators (16, 17) can be varied, wherein an additional spring (8, 9) each is led around each of the actuators (16, 17) on the outside, and wherein the legs (11, 12) are additionally connected to the wheels (3, 4) via the additional springs (8, 9).

Abstract: A wheel suspension comprising a vehicle body, a wheel movably articulated on the vehicle body via a control arm assembly. A wheel carrier and at least one helical pressure spring which is supported on the vehicle body on the one hand and on the wheel carrier or the control arm assembly on the other hand. The spring stiffness of the vehicle body support referred to the wheel contact point of the wheel can be controlled so as to be variable. Use is made of a helical pressure spring assembly whose force action line deviates from the geometric spring center line. Furthermore, there are provided rotational means for the 3-dimensional adjustment of the force action line relative to the geometric spring center line.

Abstract: Disclosed is a shock absorber which includes a shock transmission part having a lower end integrally coupled with a non-rotation wheel shaft of a tire and an upper end extending upward, a lever that is in contact with the impact transmission part at its one end and has a support pin at its center, and a shock attenuating part connected to the other end of the shock transmission part to attenuate impact applied to the lever through the shock transmission part during vertical movement of a vehicle. Therefore, an impact press point is moved to a center support pin of the lever as impact from the tire of the vehicle to a spring is increased. As a result, a spring constant is increased in proportion to movement of the pressing contact point, namely, by setting a small spring constant to the small impact, and a large spring constant to the large impact.

Abstract: An air suspension system for a vehicle is provided and includes a torque arm that is pivotally connected to a lever arm. The lever arm is connected to a vehicle frame via a pivotal shackle. An air spring is disposed along the lever arm and extends between the vehicle frame and the lever arm.

Abstract: A vehicle suspension including a coil spring mounted between two supports of variable spacing. At least one of the ends of the spring (13) bears against one of the supports (14, 15) via an elastically deformable bushing (17) of variable stiffness.

Abstract: A trailer for all terrain vehicles and/or snowmobiles for transporting injured persons from remote locations. Trailer has a frame of tubing, a main axle, spring and shock suspension, flotation type tires, IV pole with multiple mounting locations, carrier area for injured personnel transport, and accessory tube for attaching miscellaneous accessories.

Abstract: A hydraulic system for a vehicle suspension for a vehicle, the vehicle including a vehicle body and at least two forward and two rearward wheel assemblies, the vehicle suspension including front and rear resilient vehicle support means between the vehicle body and the wheel assemblies for resiliently supporting the vehicle above the wheel assemblies, the hydraulic system including: at least two front (11, 12) and two rear (13, 14) wheel rams respectively located between the wheel assemblies and the vehicle body, each ram (11 to 14) including at least a compression chamber (45 to 48) and a rebound chamber (49 to 52); wherein the compression chamber (45, 46) and rebound chamber (49, 50) of each said front wheel ram (11, 12) is in fluid communication with the rebound chamber (47, 48) and compression chamber (51, 52) respectively of a diagonally opposed said rear wheel ram (13, 14) to respectively provide two fluid circuits, each fluid circuit providing a front and back compression volume therein, the front compr