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| Number | Title | Issue Date |
| 8096568 | Hydropneumatic axle suspension for vehicles The hydropneumatic axle suspension for vehicles, especially the front axle thereof, cooperates with at least one suspension cylinder (10) connected to a hydraulic accumulator (26; 24) on both its ring side (14) and the piston side (12). T... | 01/17/2012 |
| 7976040 | Axle air dump for multiple axle vehicles A system and process for controlling vehicle loading on a multi-axle vehicle and improving maneuverability is disclosed. The system includes a reservoir of pressurized air and associated leveling valve that uses a relay valve to improve refill times when the vehicle... | 07/12/2011 |
| 7942432 | Leveling system for a vehicle air suspension A system for maintaining a vehicle front end air spring suspension level, for a vehicle having a designed load imbalance, includes a height control valve mounted on the higher load side of the vehicle and controlling compressed air to the air springs of the vehicle ... | 05/17/2011 |
| 7841608 | Pneumatic proportioning system for vehicle air springs A pneumatic proportioning system for heavy-duty vehicle air springs includes an air supply, a height control valve and a solenoid valve in fluid communication with one another and with the air springs of at least one axle/suspension systems of a heavy-duty vehicle. ... | 11/30/2010 |
| 7810827 | Pilot operated valve with inversion control and pressure hold functions A valve is disclosed for use in a system and process for controlling vehicle loading on a multi-axle vehicle and improving maneuverability. The valve partially exhausts air from an axle air bag when the vehicle is maneuvering at slow speed, reduces the load on the a... | 10/12/2010 |
| 7740257 | Vehicle suspension with linked air bags An air suspension system for a multi-axle vehicle has an air bag system including at least one air bag operatively associated with the vehicle wheels on selected wheel and axle sets to control relative movement between each of the selected wheels and a supporting fr... | 06/22/2010 |
| 7735846 | Hydraulic control circuit A hydraulic control circuit (100) comprises a source (180) of fluid pressure having a fluid inlet (201) and a fluid outlet (202); a fluid reservoir (181) fluidly connected to the fluid inlet of the pressure source; an attenuation m... | 06/15/2010 |
| 7681897 | Wheel suspension 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 r... | 03/23/2010 |
| 7658393 | Complementary suspension device Complementary suspension device applicable between the hydro-pneumatic suspension systems of at least two wheels of a vehicle, which transfer the forces originating in said wheels to the aforementioned complementary device by means of displacement, and/or decanting,... | 02/09/2010 |
| 7637517 | Vehicle height adjustment system In order to start vehicle height adjustment control even when an air suspension air tank is empty or sufficient air is not left therein, a vehicle height adjustment system includes a compressor which produces compressed air, a magnetic valve which controls air suppl... | 12/29/2009 |
| 7607672 | Vehicle height adjusting apparatus A vehicle height adjusting apparatus includes air spring portion, an air supply source, a switching valve causing a total air volume of the air spring portion to be constituted by only a main air chamber and by a sum of the main air chamber and a sub air chamber, an... | 10/27/2009 |
| 7552932 | Vehicle air-suspension system and method of operation A vehicle air-suspension system, especially an air-suspension system designed as a partly closed system, and a method for operating the system are provided. The air-suspension system includes at least one compressed-air delivery device, a plurality of air-suspension... | 06/30/2009 |
| 7475895 | Hydraulic circuit for a stabilizer bar A hydraulic system for use in a motorized vehicle including a pressure source, a valve fluidly coupled to the pressure source, and an actuator fluidly coupled to the valve. The actuator includes an outer casing and a piston slidably received in the outer casing such... | 01/13/2009 |
| 7441789 | Pneumatic suspension system for a vehicle A pneumatic suspension system for a vehicle includes a compressed air accumulator, a compressed air transport device, at least one pneumatic bellows and an electrically controllable reversing valve used to connect the compressed air accumulator to a suction connecti... | 10/28/2008 |
| 7441781 | Lift system for raising the rear of a truck A lift system for integration with the air suspension system of a truck for raising the rear of the truck so that the trailer can be attached and the landing gear let up includes an air dump valve, two air control switch valves, one one-way valve, one air gauge rate... | 10/28/2008 |
| 7416190 | Air suspension system for a vehicle An air suspension system for a load bearing vehicle which includes a pair of air springs fluidly connected to a pair of auxiliary air reservoirs and to a main air reservoir. The system includes control valves which permit the air in the air springs to be exhausted t... | 08/26/2008 |
| 7416189 | Vehicle ride control system A ride control suspension control system having suspension control units with a damper and a single pressure regulator that controls dampening in both the compression and rebound chambers of the damper. The fluid control circuit may include a plurality of check valv... | 08/26/2008 |
| 7396029 | Air-suspension device for vehicles, in particular for commercial vehicles An air-suspension device for vehicles, e.g., commercial vehicles, includes a valve block that is assigned to a rear axle and contains a central valve for aerating and venting air-spring bellows of the rear axle, and a valve block assigned to a front axle for aeratin... | 07/08/2008 |
| 7396024 | Fluid pressure control apparatus for stabilizers A hydraulic pressure control apparatus for stabilizers controls hydraulic fluid in a hydraulic communication path hydraulically connecting cylinders each operatively connected to each stabilizer of a vehicle. The apparatus includes a spool valve provided in the hydr... | 07/08/2008 |
| 7386378 | Linear control of an automobile suspension A vehicle suspension system that includes a cylinder, a rod inserted within the cylinder, a piston coupled to the rod and a piston valve which has an input piston current. The suspension system further includes a base coupled to the cylinder, a base valve which has ... | 06/10/2008 |
| 7360777 | Vehicle suspension system A vehicle suspension system for a vehicle, including: (a) a plurality of suspension cylinders each disposed between a chassis-side member and a corresponding one of a plurality of wheel-side members; (b) a controller cylinder including a housing and at least one pis... | 04/22/2008 |
| 7350795 | Suspension A rear axle suspension for a highway truck that includes a pair of trailing arms suspended below a frame by a pair of hanger brackets. The hanger brackets define a pivot axis for the trailing arms. A supplemental axle locating member is attached to the axle and incl... | 04/01/2008 |
| 7341263 | Hydropneumatic suspension A hydropneumatic suspension having at least one suspension cylinder (10) and at least one hydraulic accumulator configured as a suspension accumulator (18) has a pilot-actuated valve (20) for opening or blocking a fluid-carrying connection betwe... | 03/11/2008 |
| 7331592 | Compressed air processing apparatus for compressed air systems of motor vehicles A compressed air processing apparatus includes a pressure controller, an air dryer, a multi-circuit protection valve and an electronic control unit. A switching valve is designed and arranged to supply compressed air to an air suspension system and to deaerate the a... | 02/19/2008 |
| 7322580 | Stabilizer control device A stabilizer control device includes a pair of stabilizer bar positioned between right, left wheels of a vehicle, an electric motor, an actuator positioned between said pair of the stabilizer bar, the actuator comprising the electric motor, and a control means for c... | 01/29/2008 |
| 7318594 | Active roll stabilization system An active roll stabilization system of a vehicle having an axle with at least two wheels, wherein the axle is provided with a roll stabilizer that is actuated by means of a hydraulic device. The hydraulic device is actuated and controlled by at least one pressure co... | 01/15/2008 |
| 7318595 | Variable ride control A skid steer vehicle has a chassis with four drive wheels suspended from the chassis that are damped by four damping cylinders. An electronic controller varies the damping of the cylinders in an automatic mode, based on certain operational parameters of the vehicle,... | 01/15/2008 |
| 7311314 | Vehicular suspension system A vehicular suspension system having a fluid circuit including two fluid cylinders provided on respective front-wheel and rear-wheel sides, and two fluid passage systems one of which connects one of two fluid chambers of the fluid cylinder on the front-wheel side to... | 12/25/2007 |
| 7306239 | Height control system and sensor therefor A sensor for a height control system uses a transducer to detect changes in position of an arm relative to a vehicle and sends a proportional signal to a microprocessor that, in turn, actuates a pneumatic valve operably connected to an air spring between the arm and... | 12/11/2007 |
| 7303201 | Air suspension system for a vehicle A height control valve linkage assembly for an air suspension system, including an air bag and a height control valve controlling the supply of air to the air bag. A telescopic linkage is positioned between the arm of the height control valve and the suspension. The... | 12/04/2007 |
| 7293780 | Vehicle roll control system A vehicle roll control system for a vehicle has a hydraulic actuator attached to a torsion bar. The system includes first and second pressure control valves fluidly connected in series between a pressure source and a reservoir, and a directional valve fluidly connec... | 11/13/2007 |
| 7281722 | Wheeled vehicle with suspension units A wheeled vehicle has a front suspension unit coupled with a body frame to suspend a front wheel. The front suspension unit allows the front wheel to move relative to the body frame. The front suspension unit has a pair of front suspension members coupled with each ... | 10/16/2007 |
| 7278648 | Adjustable control arm for vehicle suspension mechanisms An adjustable control arm is for a suspension of a vehicle having a frame and at least one wheel. The control arm includes a first arm section connected with the frame and a second arm section connected with the wheel and coupled with the first arm section such that... | 10/09/2007 |
| 7255358 | Air suspension system for vehicle An air suspension system includes an air tank, an air drier, a compressor, and an air spring, which are sequentially provided in a first line. The air suspension system further includes a second line, a third line, an intake line, and a discharge line, which are con... | 08/14/2007 |
| 7240911 | System for controlling distribution of fluid to a system of air bags for use with vehicular trailers A valve system controls which air bags on a tractor trailer are in fluid communication with a pressurized air supply source. If one of the air bags develops a leak, an air bag may be taken out of fluid communication with the remaining air bags and pressurized air so... | 07/10/2007 |
| 7234707 | Integrated control unit for an active roll control system for a vehicle suspension system An Active Roll Control System for a motor vehicle that utilizes small valves to control large flows. Flow is supplied by a hydraulic pump which is powered in some fashion by the motor vehicle. Flow is directed to the actuators by a three-position-four-way valve that... | 06/26/2007 |
| 7221265 | System for sensing level change in vehicles A system for sensing relative position between chassis (5a, 5b) and axle (3) on a vehicle, which vehicle is provided with a so-called V-rod (1) mounted between the chassis (5a, 5b) and the axle ( | 05/22/2007 |
| 7192012 | Air suspension system with supply air restriction valve A control system, primarily for use with a vehicle, which increases ride stability and minimizes cycling of the control system during normal operation of the vehicle by utilization of a restriction valve to restrict the fluid introduced into or exhausted from a flui... | 03/20/2007 |
| 7192032 | Electronic control of vehicle air suspension A system is provided for use on large vehicles of the type wherein the vehicle frame (12) is supported on vehicle axle assemblies (14, 20, 22) through air bags (26, 30, 32), and each air bag has a lower end coupled to the lower end of an arm suc... | 03/20/2007 |
| 7175193 | Wheel bracket mechanism for an electric wheelchair equipped with auxiliary wheels A wheel bracket mechanism for an electric wheelchair equipped with auxiliary wheels, which comprises a frame, a pair of drive wheel brackets, four pedestal assemblies, a pair of caster brackets, a pair of oscillating assembly and a pair of anti-tipping brackets. The... | 02/13/2007 |
