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| Number | Title | Issue Date |
| 5738190 | Flexing disc-blow off assembly for use in a shock absorber A shock absorber utilizes a single flexing disc assembly includes a flexing disc which is capable of performing the flexing disc function normally required for allowing the passage of fluid between the two sides of a shock absorber while also providing th... | 04/14/1998 |
| 5727662 | Thermal expansion compensation device for shock absorbers A shock absorber has a biasing member located between the base cup of a reserve tube and a cylinder end at the bottom of a pressure tube. The biasing member urges the pressure tube away from the base cup of the reserve tube and provides for movement betwe... | 03/17/1998 |
| 5725239 | Adaptive load dependent suspension system A suspension system for use in a motor vehicle that is self-adjusting in response to vehicle load and roadway conditions. The system incorporates a pneumatic arrangement for such an adaptive load dependent system which connects air springs with fluid-cush... | 03/10/1998 |
| 5706196 | Method and apparatus for determining the velocity of a vehicle body An adjustable damping system (26) for an automotive vehicle (12) having a damper (10) and sensors (28, 30, 32) for determining the movement of the automotive vehicle (12) and generating a signal representing the movement of the automotive vehicle (12). Th... | 01/06/1998 |
| 5682980 | Active suspension system In accordance with the teachings of the present invention, a hydraulic actuator is described which is operable to generate forces. The hydraulic actuator includes a pressure cylinder as well as a piston disposed within a pressure cylinder and being operab... | 11/04/1997 |
| 5653315 | Automatic damper system An automatic damper system for an automobile which includes a plurality of shock absorbers (10). Each of the shock absorbers (10) having a pressure cylinder (48), a first valve member (100) for establishing the first plurality of flow passages, as well as... | 08/05/1997 |
| 5579814 | Method and apparatus for charging dampers with pressurized gas A method and apparatus for charging a damper with pressurized gas by forming a flow passage between the dust lip of the oil seal and the piston rod. The flow passage is formed by locally deforming the dust lip under the action of a distortion clamp. A sou... | 12/03/1996 |
| 5518090 | Piston post for a damper A piston post (54) for use in a damper (10) comprising a pressure cylinder (48) having a working chamber (50) with first and second portions. The piston post (54) has a first flow passage (200) fluidly communicating with the first portion of the working c... | 05/21/1996 |
| 5474367 | Actuation member for a proportioning valve for load leveling applications A proportioning valve actuation member (110) for a vehicle (12) having a braking system and a load leveling system has an actuator (22) mounted between the proportioning valve (20) of the braking system and the rear suspension (14) of the vehicle (12). Th... | 12/12/1995 |
| 5433470 | Method and apparatus for absorbing resonance vibration in a leaf spring in a suspension system A suspension system for an automotive vehicle having a sprung portion and an unsprung portions. The suspension system includes a leaf spring for insulating the transmission of road vibration from the unsprung portion of the automotive vehicle to the sprun... | 07/18/1995 |
| 5363945 | Control valve for shock absorbers A direct acting shock absorber for damping the movement of the body of an automobile is disclosed. The shock absorber comprises a pressure cylinder forming a working chamber having first and second portions operable to store damping fluid. A piston is dis... | 11/15/1994 |
| 5350187 | Adjustable damping system An adjustable damping system (10) for motor vehicles is disclosed. The adjustable damping system (10) includes dampers (10) for damping road vibration. Each of the dampers (10) include a pressure cylinder (48) which forms a working chamber (50) which are ... | 09/27/1994 |
| 5337863 | Method and apparatus for absorbing mechanical shock A method and apparatus for absorbing mechanical shock is disclosed. The apparatus comprises a pressure cylinder forming a working chamber having first and second portions operable to store damping fluid. The apparatus further comprises the first valve for... | 08/16/1994 |
| 5325942 | Tunable hydraulic valve for shock absorber A novel tunable hydraulic valve assembly, adaptable to a standard direct acting hydraulic shock absorber, variably responsive to a plurality of selected ranges of fluid pressure differentials to provide a plurality of fluid flow paths between fluid contai... | 07/05/1994 |
| 5297424 | Telemetry system for tire pressure and temperature sensing An apparatus for measuring the temperature and pressure of air in a pneumatic tire. The apparatus comprises a circuit for sensing the temperature and pressure of air in the pneumatic tire. The apparatus further comprises a circuit for transmitting a signa... | 03/29/1994 |
| 5217245 | Switchable roll-stabilizer bar Vehicle suspension apparatus operating between the sprung and unsprung masses of a vehicle includes a pendular anti-roll bar connected to the vehicle, and a pair of links which connect the bar to the wheels. One and the other link, respectively, is extens... | 06/08/1993 |
| 5217095 | Method and apparatus for absorbing mechanical shock A method and apparatus for absorbing mechanical shock is disclosed. The apparatus comprises a pressure cylinder forming a working chamber having first and second portions operable to store damping fluid. The apparatus further comprises the first valve for... | 06/08/1993 |
| 5211268 | Control valve for shock absorbers A direct acting shock absorber for damping the movement of the body of an automobile is disclosed. The shock absorber comprises a pressure cylinder forming a working chamber having first and second portions operable to store damping fluid. A piston is dis... | 05/18/1993 |
| 5163659 | Hydraulic actuator for leveling system A hydraulic actuator including a pressure cylinder forming a working chamber having first and second portions operable to store damping fluid. The hydraulic actuator further includes a piston disposed within the pressure cylinder between the first and sec... | 11/17/1992 |
| 5154263 | Method and apparatus for controlling the flow of damping fluid through a piston A shock absorber for damping the movement of the body of an automobile. The shock absorber includes a pressure cylinder forming a working chamber with a piston disposed therein. The piston has a plurality of flow passages extending therethrough. A first v... | 10/13/1992 |
| 5152379 | Adjustable shock absorber assembly A shock absorber comprises a piston and piston rod assembly mounted for reciprocation in a cylinder, the piston dividing the cylinder into upper and lower chambers, a floating disk valve slidably disposed in a fluid reserve chamber of the piston for movem... | 10/06/1992 |
| 5148897 | Piston valving for shock absorbers A pressure-operated valving arrangement for a piston assembly of the type used in a direct-acting shock absorber is disclosed. Bi-directional primary and secondary flow paths are provided for regulating the damping forces generated during both rebound and... | 09/22/1992 |
| 5135203 | Vehicle leveling shock absorber assembly An improved shock absorbing and leveling system for vehicles or the like is disclosed and includes a shock absorber sub-assembly and an airspring sub-assembly that can be used as either an assist device for a primary spring or as a primary spring itself. ... | 08/04/1992 |
| 5125681 | Method and apparatus for determining the displacement of a piston within a shock absorber An apparatus for determining the displacement of a piston within a shock absorber. The shock absorber includes a pressure cylinder forming a working chamber having first and second portions operable to store damping fluid. A piston is provided for control... | 06/30/1992 |
| 5123671 | Method and apparatus for controlling shock absorbers An apparatus for damping the movement of the body of an automobile. The apparatus includes a shock absorber having a pressure cylinder which forms a working chamber and a first and second portion. A first sensor is used to generate an electrical signal in... | 06/23/1992 |
| 5113979 | Base valve for a shock absorber A shock absorber for damping the relative movement of the sprung portion of the automobile with respect to the unsprung portion of the automobile. The shock absorber includes a pressure cylinder and a piston disposed within the pressure cylinder. The pist... | 05/19/1992 |
| 5107970 | High pressure sealing system and method A sealing system for a hydraulic actuator is disclosed which is operable to selectively change the frictional sealing force exerted on a piston rod in response to the fluid pressure acting on the sealing system. The sealing system includes a leakage chamb... | 04/28/1992 |
| 5104144 | Shock absorber with sonar position sensor A damping device operable to change a suspension characteristic of a vehicle in response to changes in a relative relationship between the piston and the cylinder of the damping device. The damping device comprising a pressure cylinder forming a working c... | 04/14/1992 |
| 5097419 | Method and apparatus for dynamic leveling A method and apparatus for dynamically leveling the attitude of a vehicle using a low power fully active suspension system. The apparatus connects the suspension and body of the vehicle and includes a hydraulic damper having a pressure cylinder forming a ... | 03/17/1992 |
| 5092626 | Apparatus for controlling the damping of a shock absorber An apparatus for damping the movement of the body of an automobile. The apparatus includes a shock absorber having a pressure cylinder which forms a working chamber having first and second portions operable to store damping fluid. The apparatus further in... | 03/03/1992 |
| 5090524 | Shock absorber with an electrical connector A shock absorber is disclosed which electrically communicates with an external source of electrical potential. The shock absorber comprises a valve for electrically controlling the flow of damping fluid in the working chamber of the shock absorber. The sh... | 02/25/1992 |
| 5074533 | Endothermic furnace An endothermic furnace for sintering metal includes a pair of U-shaped retort tubes which are mounted to the underside of a flat, rectangular lid, the lid being removably secured along the respective top vertical edges of the furnace chamber sidewalls and... | 12/24/1991 |
| 5020825 | Method and apparatus for absorbing mechanical shock A method and apparatus for absorbing mechanical shock is disclosed. The apparatus comprises a pressure cylinder forming a working chamber having first and second portions operable to store damping fluid. The apparatus further comprises a first sensor for ... | 06/04/1991 |
| 5016908 | Method and apparatus for controlling shock absorbers An apparatus for damping the movement of the body of an automobile. The apparatus includes a shock absorber having a pressure cylinder which forms a working chamber and a first and second portion. A first sensor is used to generate an electrical signal in... | 05/21/1991 |
| 5007659 | Internal damping force sensor In a remote controlled fluid piston-piston rod type damper, a ported damping piston divides a cylinder into upper and lower chambers, a "spoiler" sleeve reciprocably encircles an electrical coil, a pair of shoulders extend radially from the piston rod, an... | 04/16/1991 |
| 5000478 | Shock absorber with Doppler fluid velocity sensor A hydraulic activator operable to change a suspension characteristic in response to changes in the velocity of damping fluid flowing through a flow passage provided in flow control valving within the shock absorber. The hydraulic activator comprising a pr... | 03/19/1991 |
| 4995635 | Ultrasonic Doppler velocity sensing within a hydraulic actuator A direct acting hydraulic damper comprising an internal, non-contact sensing means for the direct measurement of relative velocity between the piston and the cylinder of the damper. The damper comprising a cylinder forming a working chamber operable to st... | 02/26/1991 |
| 4989844 | Vehicle leveling shock absorber assembly An improved shock absorbing and leveling system for vehicles or the like is disclosed and includes a shock absorber sub-assembly and an airspring sub-assembly that can be used as either an assist device for a primary spring or as a primary spring itself. ... | 02/05/1991 |
| 4955460 | Control valve for shock absorbers A direct acting shock absorber for damping the movement of the body of an automobile is disclosed. The shock absorber comprises a pressure cylinder forming a working chamber having first and second portions operable to store damping fluid. A piston is dis... | 09/11/1990 |
| 4943083 | Signal conditioning circuit assembly A signal conditioning circuit assembly for use with a shock absorber. The signal conditioning circuit includes a pressure sensor for sensing differential pressure between the damping fluid stored in the upper and lower portions of the working chamber. The... | 07/24/1990 |
