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| Number | Title | Issue Date |
| 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 |
| 6752402 | Level control system for a motor vehicle A level control system for a motor vehicle having a vehicle body includes a plurality of air springs which can be filled or discharged with pressurized air to control the level of the vehicle body. A first control apparatus controls the functions of filling and disc... | 06/22/2004 |
| 6446980 | Device for determining the distance between vehicle body and vehicle wheel The intention is to specify a simplified design for a device which is used in vehicles for determining a vertical distance between a vehicle body and at least one vehicle wheel which is adjustably mounted thereon. In the device according to the invention, a fi... | 09/10/2002 |
| 6416061 | Hydraulic suspension system This invention relates to hydraulic suspension systems and in particular to vehicle oleopneumatic suspension systems employing sliding pillar struts. There is provided a suspension system for a vehicle comprising a plurality of suspension struts, each mou... | 07/09/2002 |
| 6168171 | Vehicle height adjust control apparatus and method The method of controlling a vehicle height adjust apparatus for a vehicle that includes an actuator capable of changing a vehicle height, a height detector that detects the vehicle height and a controller linked to the actuator that receives parameters in... | 01/02/2001 |
| 6076027 | Method of controlling a vehicle active tilt control system A method of controlling a vehicle active tilt control system is provided for increasing the operating efficiency and improving operator/passenger comfort associated with the operation of a motor vehicle having an active tilt control system. The tilt contr... | 06/13/2000 |
| 5587907 | Vehicle suspension apparatus capable of preventing generation of transitional variation in rolling movement A suspension apparatus for vehicles capable of changing a characteristic of suspension by controlling supply/release of fluid into/from hydraulic cylinders which are respectively provided between a vehicle body and each wheel. The apparatus detects vehicl... | 12/24/1996 |
| 5515274 | Method and system for controlling active suspensions of a vehicle An active suspension system of a vehicle has a feed back control system for controlling four suspensions for the four wheels to maintain a reference vehicle height responsive to detected vertical relative displacements between the wheels and the vehicle b... | 05/07/1996 |
| 5228704 | Vehicle height control system after ignition switch is turned off A vehicle height control system is provided. This height control system is directed to establish fluid communication between right and left suspension actuators or between front and rear suspension actuators, balancing fluid pressures in the actuators for... | 07/20/1993 |
| 4982972 | Hydraulic pump and actuator for parallel auxiliary leaf spring Selectively engagable auxiliary leaf springs (38 or 138) for vertically supporting a vehicle chassis (32) on an axle assembly (22 or 102) in parallel with main suspension springs (34 or 114). In three of the disclosed embodiments, both ends (38b,38a) of t... | 01/08/1991 |
| 4829436 | Vehicle air suspension system with accurate side to side leveling A vehicle suspension system has at least one leveling device with a leveling sensor on each side of the vehicle. Leveling action is initiated when a sensor indicates height out of a dead band around the calibrated level for the sensor. Once initiated, lev... | 05/09/1989 |
| 4798398 | Dual rate equalizer suspension A suspension system for a vehicle in which each suspension system at each wheel has a dual spring rate. An external accumulator is used in connection with the main oil/gas strut but is charged to a higher initial pressure than the pressure of the main str... | 01/17/1989 |
| 4558886 | Fluid circuit means for elevating the rear end of an air ride truck trailer Fluid circuit means to elevate the rear end of a truck trailer are incorporated in the air ride suspension means for the truck trailer and in communication with the air brake or spring brake fluid circuitry. The fluid circuitry provides manually controlla... | 12/17/1985 |
| 4371182 | Vehicle suspension system A motor vehicle suspension system comprises four hydro-pneumatic struts three of which are provided with sensors to detect variations in length of the struts. A control system is responsive to the sensors and operates valves to add fluid to or remove flui... | 02/01/1983 |
| 4252340 | Tandem wheel suspension system Tandem wheels are carried on arms trailing from a hinge point to a vehicle chassis. The forward wheel trailing arm extends rearwardly of the wheel to termination under an air bag. The rear wheel trailing arm extends forwardly of chassis hinge point to ter... | 02/24/1981 |
| 4050710 | Apparatus to reduce the effect of lateral forces during turns and/or one-sided loads on persons in a vehicle The invention covers an apparatus to reduce the effect of lateral forces during turns and/or one-sided or uneven loads on persons in a vehicle, whereby the chassis is provided with a feeler responding to lateral acceleration and inclination respectively, ... | 09/27/1977 |
