Abstract: A wheel module (10) for a motor vehicle includes a wheel (12) and a wheel guide (14) for guiding the wheel (12). The wheel guide (14) includes a wheel carrier unit (16) for supporting the wheel (12); a wheel fork (24) supporting the wheel carrier unit (16); a steering actuator (18) for adjusting the steering angle of the wheel (12); a spring-damper unit (28); and a level adjustment unit (36) for adjusting the height of the vehicle body (32) of the motor vehicle. The spring-damper unit (28) is arranged in a region of the wheel guide (14) between the wheel fork (24) and the wheel carrier unit (16).

Abstract: Aircraft landing gear comprising a locking assembly including a pair of spaced-apart bearing pads and a lock member. The lock member is moveable between a locked position in which it engages the bearing pads to prevent pivotal movement of a steerable axle, and an unlocked position in which the member is disengaged from the bearing pads such that movement of the axle can occur. The lock member has a guide surface on either side for guiding the member and bearing pads into alignment during movement of the member from the unlocked to the locked position. The guide surface comprises a first inclined portion for moving the member towards alignment with the bearing pads and a second inclined portion, spaced apart from the first portion, for moving the member into alignment with the bearing pads such that the member and bearing pads are aligned in a movement comprising two stages.

Abstract: A tandem drive arrangement includes one or more independently driven wheels (118) that are arranged in a tandem configuration along a beam (120). The beam (120) is rotatably connected to a frame (102) of a machine (100). The tandem drive arrangement further includes an actuator (206) operating to selectively impart a rotating moment to the beam (102). The rotating moment tends to rotate the beam (120) in one direction and counteracts a torque imbalance resulting from operation of motors (128) rotating one or more independently driven wheels (118) connected to the beam (120).

Abstract: A tandem suspension for connecting a vehicle chassis to front and rear steerable axles is provided. The tandem suspension includes, on each side of the vehicle, a front leaf spring linking the chassis and the front axle, a rear leaf spring linking the chassis and the rear axle, an equalizer assembly mounted to the chassis for equalizing the front and rear axles, a front air spring disposed between the chassis and the front axle, a rear air spring disposed between the chassis and the rear axle, and a pneumatic control system pneumatically linked to the front and rear air springs for supplying pressurised gas thereto and operable to unload one of the front and rear air springs. A method of installing a tandem suspension in a vehicle having a first steerable axle and a front leaf spring is also provided.

Abstract: A vehicle includes a semi-active suspension including suspension dampers controllably adjustable in accordance with electronic stability control commands and ride and handling commands. Vehicle steering response states, turning direction states and vehicle dynamics states are binary coded in respective state variables and suspension control calibrations are binary coded in calibration words. Integrity and security of state variables and calibration words are ensured in efficient binary digit resource allocation schemes.

Abstract: In one embodiment, a dual purpose spring holder mounting bracket pivotally receives a rear suspension spring arm and also receives a tensioning member extending to a forwardly positioned mounting bracket.

Abstract: The invention relates to a vehicle suspension system. There is a need for a stable walking beam suspension system where the beam can oscillate and move vertically. Such a suspension system includes a support fixed to the vehicle frame and having first and second ends. A swing arm has a first end pivotally coupled to the first end of the support via a pair of spaced apart pivot pins. Air bags are coupled between the frame and the second end of the swing arm. A walking beam has opposite ends coupled to left and right wheel support assemblies. The walking beam is pivotally coupled to the swing arm. A damping cylinder is coupled between the frame and the second end of the swing arm. Resilient bumper members are engagable with the walking beam and are mounted on an end of the swing arm and fixed to an end of the support.

Abstract: A tractor-trailer slider includes spaced apart longitudinal side rails having control arm supports extending downwardly from the side rails for supporting the slider. Portions of the longitudinal side rails and the control arms supports are integrated using one or more common plates. Lightening holes and edge of the slider are flanged to reinforce the walls. Coining and ribbing are also used for additional reinforcement. Lateral cross-members extend between the longitudinal side rails. The lateral cross-members have tabs on opposing ends that are received in an interlocking relationship with complementary elongated slots in the longitudinal side rails. Air spring supports arranged at forward and rearward portions of the slider are secured to the longitudinal side rails, the control arm supports, and the lateral cross-members to provide a structurally rigid frame. The air spring supports provide spaced apart air spring mounting pads.

Abstract: A suspension is provided that comprises a tandem axle walking beam with a vertically compliant center pivot bushing and a spring medium located over each axle center. The walking beam is rigidly attached to the axles and is pivotally coupled to a frame of the vehicle at a location intermediate of the first and second axles.

Abstract: Arrangement for wheel suspension in a vehicle (1) including a vehicle frame (9) that bears at least two bogie axles (16, 17) which in turn each bear a wheel axle (5, 6), and also a first bogie element (18) and a second bogie element (19) which extend essentially in the longitudinal direction of the vehicle and are suspended in said vehicle frame (9). The invention includes at least one connection element (25; 41) extending essentially transversely to the longitudinal direction of the vehicle (1), which connection element (25; 41) is connected movably to at least one of the bogie axles (16; 17) and also to the bogie elements (18, 19), for transmission of a force which arises when relative movement takes place between the bogie axle (16; 17) concerned and said bogie elements (18, 19). By virtue of the invention, good comfort and a high degree of roll rigidity of the vehicle are obtained.

Abstract: An elevating trailer for moving between a low, cargo-loading position and an elevated, cargo-transporting position. The frame of the trailer has opposing sides, each side carrying a pair of tandem wheels. An inflatable air bag is mounted on a supporting and pivotal frame above the trailer side. When the bags are inflated the arms of the supporting frames are spread apart, lifting the frame. When the bags are deflated, the arms pivot toward each other, lowering the frame and facilitating loading of cargo into a container mounted on the trailer frame.

Abstract: A method of accommodating stepping movement in a walking beam assembly that has air suspension and a walking beam assembly with air suspension which includes a saddle and a pair of walking beams pivotally mounted in parallel spaced apart relation to the saddle. Supports for air bags are positioned on the saddle. A frame bracket is provided which is adapted for mounting to a chassis of a vehicle. The saddle is pivotally mounted to the frame bracket by a pivot bearing. In accordance with the teachings of the invention, the pivot bearing includes a housing and a ball having integral support shafts extending outwardly in opposed relation. The ball is supported within the housing for limited omnidirectional movement. In addition to accommodating up and down pivotal movement of the saddle, this configuration of pivot bearing accommodates limited yaw and limited roll.

Abstract: A suspension system provides a pair of walking beams mounted parallel to a longitudinal main frame of a vehicle subframe. The walking beams support tandem axles. The walking beams are mounted to lower outboard brackets extending from each axle. A spherical joint extending from each longitudinal end of each walking beam engages the lower outboard brackets. Each walking beam is constrained against fore-aft movement through a pair of watts linkages. The watts linkages are separated by a lateral torsion tube. Each walking beam is connected to its respective watts linkages through a revolute joint and pivot relative to the torque tube. A pair of tie-rods are attached between each watts linkages and a fixed support. The tie rods include spherical joints at each end. Each axle is further restrained by a V-rod attached to an upper bracket extending from each axle.

Abstract: A suspension system provides a pair of walking beams mounted parallel to a longitudinal main frame of a vehicle subframe. The walking beams support tandem axles. The walking beams are mounted to lower outboard brackets extending from each axle. A spherical joint extending from each longitudinal end of each walking beam engages the lower outboard brackets. Each walking beam is constrained against fore-aft movement through a pair of watts linkages. The watts linkages are separated by a lateral torsion tube. Each walking beam is connected to its respective watts linkages through a revolute joint and pivot relative to the torque tube. A pair of tie-rods are attached between each watts linkages and a fixed support. The tie rods include spherical joints at each end. Each axle is further restrained by a V-rod attached to an upper bracket extending from each axle.

Abstract: A suspension system for supporting a trailer frame on a trailer axle is provided. The suspension system includes a connector disposed about the trailer axle and upper and lower arms. The upper and lower arms are each coupled to the frame and to the connector. The upper arm is coupled to the connector at a point between the axle and the longitudinal rails of the frame. The lower arm is coupled to the connector at a point between the axle and ground. The upper and lower arms together form a Watt's linkage that minimizes and/or eliminates movement of the axle in the direction of vehicle travel.

Abstract: The invention relates to a suspension system for installation between a chassis and dual axles of a vehicle. The suspension system includes an equalizer beam pivotally linking the axles together. A trailing arm support member is pivotally attached to a hanger bracket on the chassis. A suspension saddle is secured to the trailing arm support member to provide pivotal support for an equalizer beam. Air springs are located between the chassis and the trailing arm support member.

Abstract: A high clearance vehicle includes a walking beam frame and an independent suspension. The frame consists of a main frame, A-shaped frames, a main truss, leg braces, and an axle. Pins which are used to join each A-shaped frame and leg braces to the main truss act as pivot points, as does the pin that attaches the axle to the main frame. Each leg brace may connect to each A-shaped frame by an elastic member to provide the independent suspension. Legs are at each corner of the frame. At the bottom of each leg is a wheel hub mount with a wheel drive assembly operably connected to a wheel for propelling the vehicle. At the top of the front legs are tapered kingpins which carry segmented thrust washers having a knob and receiving portion. A boom having extension arms and spray nozzles may also be attached. The walking beam frame may include a crab steering device which shifts the rear axle off-center so that the vehicle dog legs.

Abstract: A suspension system for a vehicle tandem axle has air springs positioned adjacent the ends of the trailing and lead axles of the tandem axle. Pairs of air springs on each side of the vehicle are pneumatically connected to form a common reservoir. Displacement of the ends of the lead and trailing axles of the tandem axle are averaged to provide a controlling input to air spring pressurization controllers provided for each pair of air springs.

Abstract: The invention relates to a suspension system (10,12) for installation between a chassis (14,16) and dual axles (18,20) of a vehicle. The suspension system (10,12) includes an equaliser beam (22) pivotally linking the axles (18,20) together. A trailing arm support member (14) is pivotally attached to a hanger bracket (68) on chassis (14,16). A suspension saddle (58) is secured to trailing arm support (64) to provide pivotal support for equaliser beam (22) and air spring means (72) located between chassis (14,16) and trailing arm support member (64).

Abstract: The invention relates to a suspension system (10,12) for installation between a chassis (14,16) and dual axles (18,20) of a vehicle. The suspension system (10,12) includes an equalizer beam (22) pivotally linking the axles (18,20) together. A trailing arm support member (64) is pivotally attached to a hanger bracket (68) on chassis (14,16). A suspension saddle (58) is secured to trailing arm support (64) to provide pivotal support for equalizer beam (22) and air spring (72) located between chassis (14,16) and trailing arm support member (64).

Abstract: A vocational vehicle (i.e. truck or trailer intended for off-road operation) comprising a chassis mounted on a tandem axle suspension and having lateral stability in addition to roll and fore-and-aft stability. Roll and fore-and-aft stability are provided by a suspension sub-assembly comprising the stabilizer or cross tube of the suspension and a crank arm fixedly mounted on each end of the stabilizer tube with its distal end pivotally attached to the adjacent side of the chassis. Lateral stability is provided by a transverse torque rod interconnected between the rear axle and the chassis.

Abstract: A suspension system is provided for a load carrying body of a load carrying machine. The suspension system includes a longitudinal frame, first and second axle assemblies, first and second suspension members, first and second balance beams, a first pair of flexible members, and a second pair of flexible members. The first pair of flexible members, and the second pair of flexible members are connected in the system at a predetermined location at which shear is reduced and service life is increased.

Abstract: An improved suspension system includes a central bracket that pivotally receives box beams fixed to each lateral side of the axles of each wheel. The combined spaced box beams and axle move as a unit, to provide roll stability to the suspension. The invention eliminates the need for any separate stabilizer bar.

Abstract: A start-assist system for a vehicle using air actuators attached to one of rear axles, behaving as a drive axle, is provided to increase the load to the drive axle and the traction when the vehicle starts to run. A control device supplies air to the air actuators when the unladen vehicle is stopped, but discharges air from the air actuators, while keeping residual air in them, when the laden vehicle is stopped or when the vehicle runs at a speed over a predetermined speed. Thus the air actuators are protected from collapsing.

Abstract: A start-assist system provided in a vehicle having two rear axles, one of which is a drive axle. A control device includes an air actuator attached to the drive axle; a level sensor for detecting loads applied to the axles; an air supply source for supplying compressed air to the air actuator; a first valve disposed in an air conduit for supplying air to the air actuator; a second valve for releasing air from the air actuator; and a controller for controlling the first valve and the second valve. The controller opens the first valve to introduce air to the air actuator when a signal from the level sensor indicates that the vehicle is stopped and is unladen, opens the second valve to release air from the air actuator when the signal from the level sensor indicates that the vehicle is stopped and is laden.

Abstract: An air suspension system for a motor home wherein a frame supports a body and the suspension system supports the frame relative to the axles of the motor home. A structure at the front and rear ends over the axles includes arm portions extended laterally of the frame for supporting the air bags. The position of the air bags is established to substantially maximize the air bag expansion at a determined maximum road deviation to be encountered by the motor home.

Abstract: A conventional leaf spring suspension system as applicable to pick-up trucks, vans and motor homes produces a harsh ride and is unable to compensate for changes in vehicle ride height and quality brought about by uneven or heavy vehilcle loading conditions. A more effective suspension is achieved by incorporating air springs to compliment the existing leaf springs thus providing the ability to adjust ride height and hence, ride quality. This is accomplished by replacement of existing suspension components, such as shock absorbers, with, on the front suspension, an air spring and various attachment brackets and, on the rear, an air spring in combination with a sub-frame and torque arm linked cross beam, carried between which is a low pressure air spring.

Abstract: A set of bag carrying saddles replace the leaf springs of conventional walking beam assemblies and operate in conjunction with a pair of linear stabilizing arms and shock absorbers thereby giving a traction distribution of approximately 25% per wheel. The use of walking beams in conjunction with shock absorbers gives a suspension system particularly suitable for extremely rough terrain because it operates on an approximate 2:1 ratio with the air bags. The saddles include vertical side plates having diagonal forwardly and upwardly extending front portions pivotally mounted to each chassis member of the vehicle and which are also pivotally connected to the walking beams intermediate the ends of the beams. Air bags operatively extend between the saddles and the chassis members.

Abstract: A vehicle dual axle suspension comprising a force transmitting structure connected at one end thereof to a forward axle of the vehicle, and at the opposite end thereof to the rear axle, and a central resilient bushing for fastening the force transmitting structure to a cross member of the frame of the vehicle at the mid-point of the force transmitting structure. In one embodiment, the force transmitting structure is a spring plate having a relatively small thickness extending in the vertical direction of the vehicle and having a relatively large width extending in the transverse direction with respect to the vehicle. Other embodiments include resilient bars, and rigid arms pivotally attached to one another. The forward and rear axles are permitted to move substantially independently of one another in the vertical direction as necessary to provide a soft ride when traveling down the highway.

Abstract: A front axle suspension for a vehicle that is soft in ride and stiff in roll is provided. The front axle is coupled to a solid beam. The beam is a relatively nonflexible member. The beam is pivotally coupled at one end thereof to the frame and is freely movable at the other end thereof, being coupled to said frame through a two-shackle coupling that permits vertical displacement and prevents horizontal displacement. Two air bag springs are coupled between said beam and said frame. In a second embodiment, the spring is J-shaped, having a thick uniform thickness bend short transition sections, a uniformly tapering section, joined to a thinner end of uniform thickness. The bend is closer to the end of the spring secured to the axle than to a second end of the spring coupled to the frame. In a third embodiment, an elongated spring is connected to the pivoted end of the beam and at its opposite end to the frame. A lever surface or beam seat on the beam presses against the undersurface of the spring.

Abstract: A device for adjusting at least one alignment characteristic in a suspension system of an automotive vehicle that includes a wheel support member and a wheel attached to the wheel support member by at least one removable bolt, whose removal permits the alignment characteristic of the wheel to be adjusted. The device includes an adjusting bolt means having a shaft whose diameter is smaller than the diameter of the removable bolt and a mechanism for engaging the adjusting bolt such that the adjusting bolt is axially offset in the bore from which the removable bolt was removed and a mechanism for acting against the wheel assembly due to the offset axial position of the adjusting bolt for movement of the wheel assembly relative to the wheel support and means for securing the bolt in a non-rotatable position once the adjustment of the alignment characteristic has been completed.

Abstract: A suspension system for tandem axle vehicles includes: A pair of walking beams with opposite ends connected to tandem axles and with a transverse beam extending through said walking beams. A spring assembly located on each side of vehicle frame. Two vertical members, each one located between tandem tires with lower ends connecting opposite ends of said transverse beam and upper ends engaging said spring assemblies.

Abstract: A suspension system for the idlers and guide wheels, and related structures, of a belted track-type vehicle provides cushioning for the vehicle and components as the vehicle traverses obstacles and uneven terrain. The suspension system also provides tensioning and recoil for the endless track belt during ingestion of foreign material between the belt and the idler wheel. The suspension system includes a plurality of hydropneumatic struts connected between the vehicle frame and various belt guiding and supporting components. Most endless track machines utilize auxiliary frame assembles on each side of the main vehicle frame to support track guiding rollers, idler wheels, suspension systems, and track recoil mechanisms. These auxiliary frame assembles are bulky, heavy, and complicated and generally limit the total amount of suspension and recoil afforded to the idler wheels and track guide wheels.

Abstract: A vehicle with an improved suspension system having a chassis with a bogie on each side of the chassis. The vehicle has a hydraulic system that includes actuator means connected between each bogie and the chassis for maintaining the chassis generally level on level ground. The hydraulic system includes first and second connecting systems extending between the two actuator means in a manner to have movement of one wheel in one bogie in one direction tend to cause movement of the corresponding wheel in the other bogie in the opposite vertical direction to the one direction to minimize tilting of the chassis. The improved suspension system also includes a second hydraulic system that can be selectively connected to one of the first and second connecting systems to tilt the chassis relative to the bogies in one direction or the other so as to generally maintain the chassis level on ground that slopes in the longitudinal direction of the vehicle.

Abstract: A front axle suspension for a vehicle that is soft in ride and stiff in roll is provided. The front axle is coupled to a solid beam. The beam is a relatively nonflexible member. The beam is pivotally coupled at one end thereof to the frame and is freely movable at the other end thereof, being coupled to said frame through a two-shackle coupling that permits vertical displacement and prevents horizontal displacement. Two air bags are coupled between said beam and said frame. The two air bags carry substantially all the weight of the vehicle over the front axle. The two bags are designed to provide a very soft ride. The two bags are positioned longitudinally along the beam such that one of the air bags is displaced a greater distance than the other from the pivotal connection of the beam to the frame. An air line couples the two air bags to each other to permit air to flow from one air bag to the other during movement of the front axle with respect to the frame.

Abstract: A suspension system for a vehicle equipped with a pair of belts arranged on opposite lateral sides of the vehicle's frame wherein each belt is entrained about an elevated drive wheel, a front and a rear idler wheel, and roller wheels arranged longitudinally between the idler wheels. Resilient front, intermediate, and rear struts connected respectively between the frame and a support apparatus of which the front idler comprises a portion, between the frame and one set of roller wheels, and between the frame and the rear idler wheel provide the vertical support for the vehicle's frame. Fluid interconnection of the front struts provides lateral load sharing during low speed vehicle operation and, during high speed vehicle operation, fluid interconnection of each front strut with its own accumulator provides independent suspension. Selective fluid interconnection of the rear strut with a recoil strut which provides the desired belt tension maintains belt to wheel engagement for high speed vehicular operation.

Abstract: A track-type vehicle capable of high speed operation over rough terrain includes a frame supported by lefthand and righthand suspension mechanisms individually having a plurality of hydropneumatically actuated struts for supporting the frame on a plurality of wheels. An elastomeric drive belt is entrained about these wheels and is frictionally driven by an elevated drive wheel. Forces from several struts are directed into the frame in a centralized common region which minimizes rocking of the vehicle. A front idler wheel is urged forwardly and downwardly against the drive belt by a hydropneumatically actuated recoil mechanism, and a front strut also acts on the front idler wheel to resiliently urge it downwardly. A plurality of pivoting members are cooperatively connected to the struts to more evenly distribute forces against the drive belt.

Abstract: A spring support system for tandem axles that supports the adjacent ends of the springs which support the front and rear tandem axles in the center and automatically adjusts the level of the trailer as load changes by having inflatable air bags that support a movable cross beam relative to the trailer frame. The spring ends are mounted on the movable cross beam. Air bags are inflated at a pressure that is automatically adjusted to be proportional to the load on the trailer. The air bags provide an air cushion support for smoother and more trouble free operation. The movement is guided adequately so that the support is very stable, by automatically adjusting the stiffness of the pneumatic bags which compensate for differing loads.

Abstract: An air suspension system for tandem axles vehicles includes a pair of inboard, laterally-spaced air springs disposed within or below the vehicle frame each in communication with a separate reservoir compartment. The air springs are connected to a transverse tubular cross member at their upper ends, which may function as to the air reservoir compartments and are seated on the interior ends of transverse levers, each lever articulating on a floating walking beam. Each floating transverse lever may be pivotally connected at its outer end to the lower end of an outrigger bracket which is mounted at its upper end on the frame of the vehicle. A rubber spring preferably is interposed between the outer end of the transverse lever and the outrigger bracket.Upper torque rods interconnect the tandem axles and the vehicle frame, while lower torque rods interconnect the frame support bracket and the tandem axles.

Abstract: A vehicle suspension element adjustment apparatus including improved structure for adjusting suspension elements to any of a plurality of discrete positions for alignment thereof wherein pairs of relatively adjustable elements are connected to respective pairs of plate members having formed surfaces for mutual interengagement of the pairs of plates in any of such discrete positions of adjustment. The formed surfaces preferably are vertically oriented serrations which permit relative horizontal adjustment between the pairs of plates, and hence between the suspension elements connected thereto.

Abstract: An improved suspension assembly for a seismic exploration vehicle having a substantially rigid main frame supported and moved by track assemblies disposed along opposing sides of the frame. The suspension assembly includes two bogies which engage the inner periphery of a track on one side of the vehicle and each of the two bogies is mounted on one end of a bogie arm that is pivotally connected, at the other end of the bogie arm, to a central portion of a walking beam pivotally connected to the vehicle frame. End portions of the walking beam overlay the distal ends of the bogie arms and air bags are mounted between the distal ends of the bogie arms and the ends of the walking beam to bias the bogie arms in a downward direction.

Abstract: An axle suspension system for a vehicle including a pair of torque rods splayed or outwardly angled relative to the longitudinal axis of the vehicle in which the torque rods cross each other and are flexibly connected to the vehicle chassis at their outer ends and flexibly connected to an axle at their inner ends, typically at a level above the axle corresponding to the level of and in proximity to the roll center of the vehicle chassis. In one embodiment, one of said torque rods curved upwardly in a vertical plane crosses the other of said torque rods curved downwardly in a vertical plane whereby interference between them is avoided. In another embodiment, one of the torque rods passes through an enlarged opening in the other torque rod to avoid interference between the torque rods.

Abstract: A vehicle such as a dumper with articulated steering has a load-carrying portion supported by two wheel-pairs mounted on bogies. One wheel-pair can be raised from the ground while the other, still on the ground, has softer suspension. In a vehicle with its two portions relatively swingable around a longitudinal axis, the two wheels on the ground are coupled so as to move relatively identically in relation to the vehicle frame. With one wheel-pair raised and the other suspended, the vehicle is still laterally stable. Spring suspension is obtained by tipping the bogies using a mechanism actuated by a hydraulic cylinder with a gas accumulator attached to the feeder line of the hydraulic cylinder. Gas spring suspension thus occurs only when one wheel-pair is raised.

Abstract: A trailer for elongated loads, especially for torsionally-sensitive loads, such as a crane boom, consists of a channel cross-section body having a plurality of wheels at each side to the rear. Each wheel is independently mounted on the trailer frame by a cranked arm pivoted to the frame and carrying the wheel on a stub axle. Normal road shocks are accommodated by helical compression springs mounted around the piston rod of a respective cylinder and piston assembly mounted above the wheel between the arm and the trailer frame, the assembly permitting the height of the trailer frame above the ground to be adjusted. The cylinders of each plurality are connected to one another for equalization and all of the cylinders are connected together for slow travel over rough terrain so that the trailer stays relatively level if any one wheel encounters an obstacle. For rapid travel on smooth roads the cylinders of one plurality are isolated from those of the other plurality by a valve in the hydraulic supply system.

Abstract: A tandem axle suspension system wherein laterally spaced walking beams are pivotally mounted on a trunnion tube and extend forwardly and rearwardly therefrom to overly forward and rearward axles. A pair of arms are coupled by adjustable bushings to each walking beam and extend respectively forwardly and rearwardly underlying the beam. The axles are rigidly coupled to the arms, and air springs are disposed between each axle and the corresponding walking beam portion overlying the axle.

Abstract: The manner in which a trailer "rides" and the "towability" of a trailer can both be improved by utilizing a wheel suspension system employing a separate suspension structure for each wheel of the trailer. Each of such suspension structures includes an elongated member serving as an axle. One of the ends of such a member is connected to the chassis of the trailer using a torsional energy absorption device while the other of the ends of the member carries a wheel of the trailer. The latter end of the member is connected to the chassis of the trailer through the use of a spring. Various adjustments are embodied within the suspension structure for use as reasonably required in connection with the trailer.

Abstract: An improved suspension system for tandem axle vehicles characterized by a horizontally oriented frame, a pair of live axles, and a pair of walking beam assemblies disposed beneath the frame of the vehicles interconnecting the axles, and a pair of air springs mounted on at least one of the axles and connected to the frame for damping highway-induced motion imparted to the walking beams, and a manually operable pneumatic circuit for selectively pressurizing the air springs for dissipating harmonic motion.

Abstract: A suspension system for tandem axle vehicles includes a crossbeam and a torque tube interconnecting speed anti-roll members. A resilient suspension member interconnects the crossbeam and the vehicle frame.

Abstract: The suspension, as mounted in duplicate to a truck or trailer frame midway between fore and rear axles of a rear axle pair, is located relatively closely adjacent the rear of said frame; and it utilizes but a single air bag or spring unit, horizontally interposed medially between the axles, yet well spaced forwardly and inwardly from their wheel tires, as a springing agency.This unit acts vertically between the frame and a horizontal rocker arm assembly of the suspension that is coupled front-to-rear with a pair of generally similar leaf spring sets. The suspension affords an equal loading of the leading and trailing rear axles by a total of only two such air springs, each coacting with a fully floating beam, this beam being slidably associated between said spring sets.

Abstract: The suspension device tends to eliminate the vibrations due to movements between the engine and the body.The body is connected to each shockabsorber by a chamber having a variable volume and a wall constituted by an elastically yieldable block whereas the engine is connected to the body through other variable volume chambers, each chamber being connected to the adjacent chamber by a pipe and the assembly being filled with an incompressible fluid.