| Patent Number |
Title Of Patent |
Date Issued |
| RE35168 |
Vehicle suspension assembly |
March 5, 1996 |
| A suspension assembly for a wheel of a motor vehicle, includes a suspension assembly, an axle beam, an elongated spring, and a radius arm. The radius arm has an extended length for attachment at a mid-region suspension connection point on the vehicle frame. The suspension bracket has mul |
| RE31212 |
Vehicle suspension device |
April 19, 1983 |
| A vehicle coil spring and shock absorber connected directly to the front wheel by a mounting tube having a removable bottom through which the shock absorber may be removed. .Iadd. |
| 5738190 |
Flexing disc-blow off assembly for use in a shock absorber |
April 14, 1998 |
| 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 the blow off function. The flexing |
| 5727662 |
Thermal expansion compensation device for shock absorbers |
March 17, 1998 |
| 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 between the lower ends of the two |
| 5682980 |
Active suspension system |
November 4, 1997 |
| 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 operable to divide the pressure cylinde |
| 5653315 |
Automatic damper system |
August 5, 1997 |
| 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 a second valve member (134) for |
| 5579814 |
Method and apparatus for charging dampers with pressurized gas |
December 3, 1996 |
| 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 source of pressurized gas is then |
| 5518090 |
Piston post for a damper |
May 21, 1996 |
| 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 chamber (50). In addition, the pis |
| 5474367 |
Actuation member for a proportioning valve for load leveling applications |
December 12, 1995 |
| 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). The actuator (22) is operative to |
| 5433470 |
Method and apparatus for absorbing resonance vibration in a leaf spring in a suspension system |
July 18, 1995 |
| 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 sprung portion of the automotive vehic |
| 5363945 |
Control valve for shock absorbers |
November 15, 1994 |
| 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 disposed within the pressure cylinde |
| 5350187 |
Adjustable damping system |
September 27, 1994 |
| 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 operable to store damping fluid. |
| 5337863 |
Method and apparatus for absorbing mechanical shock |
August 16, 1994 |
| 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 controlling the flow of damping |
| 5325942 |
Tunable hydraulic valve for shock absorber |
July 5, 1994 |
| 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 containing portions of the shock absorb |
| 5297424 |
Telemetry system for tire pressure and temperature sensing |
March 29, 1994 |
| 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 signal indicative of the temperatu |
| 5217245 |
Switchable roll-stabilizer bar |
June 8, 1993 |
| 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 extensible and inextensible, with the |
| 5217095 |
Method and apparatus for absorbing mechanical shock |
June 8, 1993 |
| 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 controlling the flow of damping |
| 5211268 |
Control valve for shock absorbers |
May 18, 1993 |
| 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 disposed within the pressure cylinde |
| 5163659 |
Hydraulic actuator for leveling system |
November 17, 1992 |
| 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 second portions of the working c |
| 5154263 |
Method and apparatus for controlling the flow of damping fluid through a piston |
October 13, 1992 |
| 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 valve disk is located on one surfa |
| 5152379 |
Adjustable shock absorber assembly |
October 6, 1992 |
| 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 movement between first and second |
| 5148897 |
Piston valving for shock absorbers |
September 22, 1992 |
| 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 compression strokes. During |
| 5135203 |
Vehicle leveling shock absorber assembly |
August 4, 1992 |
| 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. The preferring airspring sub- |
| 5125681 |
Method and apparatus for determining the displacement of a piston within a shock absorber |
June 30, 1992 |
| 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 controlling the flow of damping fluid |
| 5123671 |
Method and apparatus for controlling shock absorbers |
June 23, 1992 |
| 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 response to whether the shock ab |
| 5113979 |
Base valve for a shock absorber |
May 19, 1992 |
| 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 piston is able to control the flow of |
| 5107970 |
High pressure sealing system and method |
April 28, 1992 |
| 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 chamber formed in a rod guide surround |
| 5104144 |
Shock absorber with sonar position sensor |
April 14, 1992 |
| 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 chamber operable to store damp |
| 5097419 |
Method and apparatus for dynamic leveling |
March 17, 1992 |
| 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 working chamber in which a piston |
| 5092626 |
Apparatus for controlling the damping of a shock absorber |
March 3, 1992 |
| 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 includes a piston assembly disposed |
| 5090524 |
Shock absorber with an electrical connector |
February 25, 1992 |
| 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 shock absorber further comprise |
| 5074533 |
Endothermic furnace |
December 24, 1991 |
| 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 the retorts being removable |
| 5020825 |
Method and apparatus for absorbing mechanical shock |
June 4, 1991 |
| 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 generating a first electrical sig |
| 5016908 |
Method and apparatus for controlling shock absorbers |
May 21, 1991 |
| 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 response to the pressure differe |
| 5007659 |
Internal damping force sensor |
April 16, 1991 |
| 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, and a pair of precompressed coi |
| 5000478 |
Shock absorber with Doppler fluid velocity sensor |
March 19, 1991 |
| 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 pressure cylinder forming a working |
| 4995635 |
Ultrasonic Doppler velocity sensing within a hydraulic actuator |
February 26, 1991 |
| 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 store damping fluid. A piston is |
| 4989844 |
Vehicle leveling shock absorber assembly |
February 5, 1991 |
| 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. The preferred airspring sub-assem |
| 4955460 |
Control valve for shock absorbers |
September 11, 1990 |
| 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 disposed within the pressure cylinde |
| 4943083 |
Signal conditioning circuit assembly |
July 24, 1990 |
| 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 signal conditioning circuit |
| 4901828 |
Method and apparatus for controlling displacement of a piston in a shock absorber |
February 20, 1990 |
| A shock absorber for damping the movement of the body of an automobile is provided. The shock absorber comprises a pressure cylinder forming a working chamber operable to store damping fluid. The shock absorber further comprises a reciprocating piston disposed in the working chamber |
| 4890858 |
Method and apparatus for controlling shock absorbers |
January 2, 1990 |
| A method and apparatus for controlling shock absorbers as disclosed. The apparatus comprises a first valve member disposed within the pressure chamber of the shock absorber for establishing a first plurality of flow passages. The apparatus further comprises a second valve member also |
| 4867475 |
Method and apparatus for controlling shock absorbers |
September 19, 1989 |
| The method and apparatus for controlling shock absorbers is disclosed. The shock absorber comprises a pressure balanced shutter sleeve disposed within the piston rod of the shock absorber. The shutter sleeve has a plurality of flow passages in fluid communication with the lower portion |
| 4866966 |
Method and apparatus for producing bypass grooves |
September 19, 1989 |
| The present invention is directed to a method and apparatus for simultaneously producing multiple linear grooves on the internal surface of cylindrical tubes. The apparatus comprises an outer cage assembly with a mandrel assembly axially and slideably disposed therein. Additionally, |
| 4865170 |
Method and apparatus for sealing |
September 12, 1989 |
| A seal is provided for a shock absorber having a housing and a piston rod partially disposed within the damping fluid in the working chamber of the shock absorber. The seal comprises a first surface engaging the housing operable to prevent the flow of damping fluid between the first surf |
| 4846318 |
Electrical connector for shock absorbers |
July 11, 1989 |
| 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 shock absorber further comprise |
| 4802657 |
Vehicle leveling shock absorber assembly |
February 7, 1989 |
| 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. The preferred airspring sub-assem |
| 4723765 |
Piston rod tie down clip |
February 9, 1988 |
| A tie-down clip is described which is adapted for retaining the rod of a pressurized suspension unit in a retracted position within the suspension unit cylinder thereby protecting the rod from damage during shipping and handling and also reduces the size of the necessary packaging for th |
| 4712353 |
Gas pressurized shock absorber assembly |
December 15, 1987 |
| A hydraulic shock absorber is formed as a sealed assembly and subsequently, at a desired time, an opening is non-contaminantly pierced in the outer shell and the shock absorber is pressurized by passing a pressurized fluid through the opening and the opening is then non-contaminantly sea |
| 4564138 |
Gas pressurized shock absorber assembly |
January 14, 1986 |
| A hydraulic shock absorber is formed as a sealed assembly and subsequently, at a desired time, an opening is non-contaminantly pierced in the outer shell and the shock absorber is pressurized by passing a pressurized fluid through the opening and the opening is then non-contaminantly sea |
