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| Number | Title | Issue Date |
| 8033565 | Tandem wheel suspension systems A trailer tandem wheel suspension system comprising a pair of suspension units (3) for mounting on either side of a chassis (4) of a trailer (1) to support a pair of wheels 2′, 2″ and arranged to respond both to small and large deflec... | 10/11/2011 |
| 7837220 | Tandem wheel arrangement A machine (100) includes a frame (102) portion and a tandem wheel arrangement, which includes a main linkage (312) and a stabilizing linkage (322) that are pivotally connected to the frame (102) portion. A first mount (304) ... | 11/23/2010 |
| 7370853 | Vibration isolating bushing with embedded angular position sensor A bushing assembly adapted for application in vehicle suspension systems includes an outer, generally cylindrical bushing member, an inner generally cylindrical bushing member arranged concentrically within the outer member. The two bushing members are interconnecte... | 05/13/2008 |
| 7360756 | Vibration isolating bushing with embedded speed/position sensor A bushing assembly adapted for application in vehicle suspension systems includes an embedded position sensor and an embedded speed sensor. ... | 04/22/2008 |
| 7320469 | Ride height control system for walking beam suspension A trailer suspension system includes first and second axles with a walking beam interconnecting the first and second axles. An intermediate portion of the walking beam provides a fulcrum for the first and second axles. Air bags are arranged on the first and second a... | 01/22/2008 |
| 7303200 | Hanger-free movable subframe for tractor-trailers A movable subframe or slider box for tractor-trailers includes a pair of elongated, longitudinally-extending, spaced-apart, parallel main members, and a plurality of cross members which extend between and are attached to the main members to form a rigid slider box s... | 12/04/2007 |
| 7249780 | Air assist adaptation for leaf spring suspension systems An air spring and a linear guide are used to boost the effectiveness of a leaf spring suspension system for a motor vehicle. The air spring mounts between the axle and the vehicle frame. The aft end of the leaf spring mounts to the linear guide to allow the leaf spr... | 07/31/2007 |
| 7234713 | Axle suspension system An axle suspension system for a load-bearing vehicle is described which comprises first and second mounting brackets secured to the longitudinally extending frame members of the vehicle. First and second lower control arms are pivotally secured at their forward ends... | 06/26/2007 |
| 7229094 | Walking watts air beam A tandem axle suspension assembly includes a pair of walking beams disposed substantially parallel to a vehicle longitudinal axis supporting first and second axles. A link plate is pivotally attached to each of the walking beams and is pivotal about an axis transver... | 06/12/2007 |
| 7168718 | Vehicle suspension arrangement and vehicle provided with such a suspension An axle suspension arrangement for rigid axles in vehicles with a frame having a pair of longitudinal beams. The suspension arrangement includes at least one first longitudinal control arm extending substantially in the longitudinal direction of the vehicle, each lo... | 01/30/2007 |
| 7168716 | Swing mechanism for steering shaft in three-wheeled industrial vehicle A swing mechanism of a steering axle in a three-wheeled industrial vehicle has a steering axle, a pair of steerable wheels, a steering shaft, a center pin and a holder. The steerable wheels are supported on both sides of the steering axle. The steering shaft is conn... | 01/30/2007 |
| 7097187 | Suspension system for a motor vehicle An independent suspension system is provided for coupling a set of wheels to a vehicle body structure. The system includes independently pivotable swing arms, a shock absorber assembly, a joining arm and tie rods. The swing arms are attached to the vehicle body stru... | 08/29/2006 |
| 7017941 | Walking beam assembly A walking beam assembly includes a pair of axles in parallel spaced relation. At least one of the pair of axles being a drop axles having end portions and an intermediate portion that extends between the end portions. The intermediate portion drops down and has a se... | 03/28/2006 |
| 7017688 | Independent suspension for multi-use vehicle A half-track vehicle includes a frame, first and second beams having forward and rearward wheels attached thereto, and first and second suspension systems. The frame includes a first side and a second side, and the first suspension system suspends the first beam fro... | 03/28/2006 |
| 7000940 | Equalized rear suspension for multi-use vehicle An equalized suspension system for a vehicle includes a first trailing arm, a second trailing arm, first and second wheels, and a cushion. The first trailing arm has a lower end pivotally secured to the first wheel, and an upper end pivotally secured to the frame. T... | 02/21/2006 |
| 6921098 | Independent suspension system for light and medium duty vehicles The present invention relates to an improved vehicle suspension system. More particularly, the present invention relates to an independent suspension system for light and medium duty trailers which utilizes a flexible bladder mounted between the vehicle frame and th... | 07/26/2005 |
| 6921097 | Arrangement for wheel suspension 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 elemen... | 07/26/2005 |
| 6604756 | Tridem axle suspension A triple axle suspension for use in a vehicle having a front axle, a medium axle and a rear axle mounted in triple axle relationship. It makes use of rigid beams to support the axles. It also makes use of equalizers to interconnect the beams, and it is de... | 08/12/2003 |
| 6478321 | Rubber shear spring assembly for tandem axle trailer A rubber shear spring assembly for mounting between inner ends of adjacent leaf springs of a tandem axle including a hanger for mounting on a vehicle frame, hanger sides on the hanger, a rubber shear spring assembly between the hanger sides, the rubber sh... | 11/12/2002 |
| 6382659 | Load distributing tandem suspension assembly A load distributing tandem suspension assembly for supporting a chassis of a vehicle. Front and rear elongated spring arrangements are connected to each other through an intermediate equalizer arrangement. The front spring arrangement has a leaf spring pi... | 05/07/2002 |
| 6364340 | Wheel lifting method and apparatus A truck trailer having a pair of tandem spaced apart rear axles and a suspension system for supporting the axles from the chassis of the trailer having a pivot member intermediate the axles about which the axles may pivot relatively to one another, the ax... | 04/02/2002 |
| 5820156 | Vehicle suspension system A vehicle suspension system having a pair of hanger brackets. A first intermediate bracket dependent from a vehicle, a second intermediate bracket a pair of control arms, and a torque rod. One end of each control arm is pivotally mounted on a correspondin... | 10/13/1998 |
| 5816605 | Tandem axle suspension with self-steering rear axle A tandem axle vehicle suspension system which includes a rear axle mount that is automatically moveable between a forward caster and rearward caster position of the axle mount relative to the suspension system to cause self-steering of the rearward axle w... | 10/06/1998 |
| 5718445 | Vehicle suspension system A vehicle suspension system having a pair of hanger brackets. A first intermediate bracket dependent from a vehicle, a second intermediate bracket a pair of control arms, and a torque rod. One end of each control arm is pivotally mounted on a correspondin... | 02/17/1998 |
| 5447324 | Stabilized tandem axle drive suspension with elastomer spring in compression and shear A tandem axle vehicle suspension is provided which, in variant embodiments, employs one or two torque beams each supporting an axle of a tandem axle vehicle and each pivotally connected to a load compensator where a single elastomer spring is mounted betw... | 09/05/1995 |
| 5333895 | Dual rear axle system for large vehicles A dual rear axle system for large vehicles in which the vehicle has a frame, and the axle system includes a forward axle housing, a draft arm having one arm affixed to the forward axle housing and the other pivotally affixed to the vehicle frame, a rearwa... | 08/02/1994 |
| 5322328 | Suspension system for heavy-duty vehicles A suspension system for a cart having a pair of longitudinally aligned, oscillating wheel support units pivotally mounted fore and aft within a frame assembly on each side of the cart, a pair of longitudinally aligned wheels mounted on each support unit, ... | 06/21/1994 |
| 5308105 | Steerable dual rear axle system for large vehicles A steerable dual rear axle system for large vehicles in which the vehicle has a frame, and the axle system includes a forward axle housing, a draft arm having one arm affixed to the forward axle housing and the other pivotally affixed to the vehicle frame... | 05/03/1994 |
| 5163700 | Dual rear axle assembly for large vehicles A dual axle assembly for large vehicles having an elongated vehicle frame, a forward axle housing, a first torque arm rearwardly extending from the forward axle housing, a rearward axle housing having a second torque arm forwardly extending from the rearw... | 11/17/1992 |
| 5112073 | Steering system for load supporting dolly A steerable, load-supporting dolly is provided wherein the dolly is self-steerable in response to the loading thereon. Controllable responsiveness of the steering is provided by at least one king-pin, the castor of which may be selectively varied.... | 05/12/1992 |
| 5033769 | Asymmetric tandem axle suspension system for vehicles A tandem axle suspension system distributes a vehicle load asymmetrically to a drive and drag axle of a vehicle, the system comprises a compensator member that is pivotally connected between a front axle seat supporting the vehicle drive axle and a hanger... | 07/23/1991 |
| 4846495 | Suspension component assembly for a tandem axle assembly A suspension component assembly including a top plate assembly for mounting relative to a spring assembly of a vehicle and a saddle. The top plate assembly having a top plate and an alignment member having locating means for accurately receiving a nib of ... | 07/11/1989 |
| 4756550 | Suspension assembly with compound parallelogram A vehicle suspension assembly for tandem drive axles has a suspension system for each axle. Each suspension system incorporates two lower torque beams on each side of the vehicle and a single central upper torque rod. A central hanger is mounted between t... | 07/12/1988 |
| 4717170 | Axle-chassis connecting device Axle-chassis connecting device is particularly for a commercial vehicle having two tandem axles of the hydropneumatic suspension type. The vertical load coming from the chassis is transmitted directly to the wheels by jacks (23) without passing through th... | 01/05/1988 |
| 4706988 | Pneumatic spring support system 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 suppo... | 11/17/1987 |
| 4706989 | Rear independent suspension for automotive vehicle In order to enable the appropriate amount of understeer to be produced in a suspension wherein the rear wheel is steered to produce a toe-in effect by a lateral rod/knuckle arm arrangement, a device which in some embodiments is hydraulically controlled an... | 11/17/1987 |
| 4699399 | Tandem-axle walking beam suspension A tandem-axle walking beam suspension is disclosed which uses bushings of novel design in the bores at opposite ends of the walking beams. The cores of the bushings have projecting ends each of which fits between the bifurcated end of one of the pair of a... | 10/13/1987 |
| 4647067 | Vehicle suspension The suspension includes a pair of arms independently pivoted to opposite sides of the vehicle chassis at one end for up-and-down movement, each arm rotatably carrying a ground-engaging wheel of the vehicle at its free end. Each arm extends in the same dir... | 03/03/1987 |
| 4553773 | Load equalizer valve and suspension system A tandem axle suspension in which the air pressure in an air spring (28) is controlled by a valve (40) which in turn is responsive to the load at the end of a leaf spring (12) to balance the load on a leaf spring axle (14) with the load on a tag axle (30)... | 11/19/1985 |
| 4460196 | Suspension system for coupled vehicle axles A suspension system for coupled truck axles, comprising a pair of rigid arms each pivotally mounted at one end on a central pivot projecting from the truck frame and at the other end to one of a pair of axles. Each of the rigid arms has an upwardly projec... | 07/17/1984 |
