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| Number | Title | Issue Date |
| 8167099 | Vehicle damper A damper (1) is provided with a body (2) which surrounds an annular compression chamber (3), the damper (1) being furnished with at least one pneumatic compensation chamber (30, 40) and a control piston (4) that can move rel... | 05/01/2012 |
| RE40649 | Adjustable shock absorber A shock absorber assembly includes a damping adjustment mechanism that can easily be incorporated into a twin cylinder design. The shock absorber includes an outer cylinder and an inner cylinder mounted within the outer cylinder. The inner cylinder is spaced apart f... | 03/10/2009 |
| 7455154 | Shock absorber A shock absorber with a shock absorber body having a cylinder. A piston is moveably guided in a receiving space of the cylinder. When the piston is moved, an air pressure generated in the receiving space exerts a braking force that acts on the piston. For air pressu... | 11/25/2008 |
| 7320388 | Stroke dependent damping A two-stage shock absorber has a pressure tube within which a valve assembly is slidably disposed. A piston rod is attached to the valve assembly and extends out of the pressure tube. A ring is slidably disposed within the pressure tube and engages the valve assembl... | 01/22/2008 |
| 7270222 | Externally adjustable internal bypass shock absorber A shock absorber that combines both the suspension function and the shock absorbing function in one unit. It has an elongated shock body filled with hydraulic fluid and a piston mounted on a piston rod that reciprocally travels within the shock body. The shock body ... | 09/18/2007 |
| 7216747 | Amplitude controlled orifice valving A dual tube shock absorber includes a spool valve located between the upper working chamber and the reserve chamber. The spool valve moves with the piston rod to open and close a flow path between the upper working chamber and the reserve chamber. This provides a lo... | 05/15/2007 |
| 7213690 | Self-powering shock, vibration and acoustic isolation system A shock and vibration isolation system for mounting equipment to a base wall uses a semi-active damper in parallel with a spring arrangement to provide optimum isolation with respect to both shock and vibration. The system comprises a load plate configured for attac... | 05/08/2007 |
| 7191877 | Fluid flow regulation of a vehicle shock absorber/damper Shock absorber components, such as a radial bypass damper, an anti-cavitation valve (ACV) and an incremental flow metering valve IFMV. The damper is of a continuous, unitary construction with a main hole and auxiliary holes interconnected by passageways. The ACV has... | 03/20/2007 |
| 7140601 | Independent and integrated compact air-bump stops A compact air-bump stop (jounceshock) provides improved motor vehicle suspension system accommodation of jounce and rebound than is provided than by a conventional shock absorber, bump cushion and/or air-bump stop. In an independent jounceshock, a primary shell and ... | 11/28/2006 |
| 7104369 | Vibration damper with stroke-dependent damping force A piston rod with a piston is installed with freedom of axial movement in a damping medium-filled cylinder, where, as a function of the stroke position of the piston, a bypass connects the two working spaces separated from each other by the piston. The piston has at... | 09/12/2006 |
| 7070031 | Apparatus for exerting a resisting force An improved crash attenuator that uses a cable and shock arresting cylinder arrangement to control the rate at which a vehicle impacting the crash attenuator is decelerated to a safe stop is disclosed. The crash attenuator is comprised of a front section and a plura... | 07/04/2006 |
| 7070028 | Frequency dependent damper A gas shock absorber has a pressure tube which defines a working chamber. A piston divides the working chamber into an upper working chamber and a lower working chamber. A flow path extends through the piston to provide fluid communication between the upper and lowe... | 07/04/2006 |
| 7055319 | Piston and cylinder assembly with volume compensating system A piston and cylinder assembly having a cylinder with a piston and a connected piston rod. The piston defines opposed chambers wherein a compensating device is disposed in at least one of the chambers. The compensating device includes a capsule of an elastic materia... | 06/06/2006 |
| 7055661 | Hydraulic shock absorber with adjusting of shock absorbing type A shock absorber (1) includes a compression chamber (2) in which a piston (3) moves along a path of travel from a near end to a far end. The chamber includes a constant force mode bleed orifice (10) adjacent the far end and a series of pr... | 06/06/2006 |
| 6974002 | Adjustable shock absorber An adjustable shock absorber for applying a force to a moving member so as to decelerate the member. The present invention provides a cylindrical outer tube having a plurality of circular, angular grooves formed in the inner surface of the tube. A cylindrical inner ... | 12/13/2005 |
| 6971492 | Shock adapter A shock adapter for converting a one-way shock absorber into a two-way shock absorber comprising a housing having a first slideable member located on one end and a second slideable member located on the opposite end with the housing having a chamber therein for rece... | 12/06/2005 |
| 6883650 | Adjustable shock absorber A shock absorber includes a body having an outer cylinder which rotates relative to an inner cylinder to provide an adjustable damping force through fluid bypass. A plurality of ports are formed through the inner cylinder to provide the fluid bypass when a passagewa... | 04/26/2005 |
| 6776269 | Twin piston shock absorber A two-stage piston has a twin piston design where one piston produces a high damping force and the second piston produces a low damping force. At specified positions along the pressure tube, by-pass passages are formed to allow fluid flow around the high damping for... | 08/17/2004 |
| 6763920 | Self-contained bidirectional end-of-stroke hydraulic snubber A bidirectional self-contained end-of stroke snubbing device (20) includes a housing (21), a rod (22) movable relative to the housing, a single fluid-filled variable-volume chamber (23) communicating with a fluid sump (24) through ... | 07/20/2004 |
| 6695104 | Reusable impact energy absorbing device An reusable impact energy absorbing device utilized a liquid filled piston and cylinder assembly whereby upon application of an impact to the piston the piston will move along the length of the cylinder and discharge the liquid outwardly through a sequenc... | 02/24/2004 |
| 6648109 | Adjustable shock absorber A shock absorber assembly includes a damping adjustment mechanism that can easily be incorporated into a twin cylinder design. The shock absorber includes an outer cylinder and an inner cylinder mounted within the outer cylinder. The inner cylinder is spa... | 11/18/2003 |
| 6415895 | Position-sensitive shock absorber The present invention is directed to shock absorbers with damping adjusters which vary the damping provided during compression and rebound strokes. The shock absorber includes a cylinder within which a piston is movably mounted for movement within the cyl... | 07/09/2002 |
| 6412615 | Hydraulic shock absorber for motor vehicles A hydraulic shock absorber for motor vehicles produces additional damping, starting at a certain immersion depth of the piston rod. This takes place by an auxiliary cylinder positioned axially inside the cylinder which, when the piston rod is immersed, is... | 07/02/2002 |
| 6352271 | Cylinder for improving the handling of a vehicle in turns A hydraulic and pneumatic cylinder (10) for use on a vehicle (100) to improve the handling of the vehicle in a turn or curve. The cylinder repositions the rear wheel (108) of the vehicle in response to a change in the speed of the vehicle. When the vehicl... | 03/05/2002 |
| 6202807 | Speed controlling hydraulic dampener A speed controlling hydraulic dampener comprises a tubular housing defining a closed cylindrical chamber for containing a hydraulic fluid. The chamber containing two separate pistons and piston rods that extend through sealed openings in the ends of the h... | 03/20/2001 |
| 6168205 | Load limiting device for a seat belt A load limiting device is used with a vehicle seat belt during a crash to allow a limited and controlled forward motion of a vehicle occupant after the retractor has locked. The load limiting device decreases the forces exerted by the seat belt on the veh... | 01/02/2001 |
| 6006873 | Industrial shock absorber The invention relates to an industrial shock absorber requiring very few component parts, which can be cost-effectively produced while expensive milling operations are avoided, wherein different damping curves can be realized relatively simply. The shock ... | 12/28/1999 |
| 5988606 | Hydraulic strut with over-pressure control A hydraulic strut having a damping rate that is variable includes a bypass valve which is operated to open and close by a gas spring supported within the piston of the strut. A main orifice plate divides an oil-filled cavity within the strut into first an... | 11/23/1999 |
| 5948021 | Hydraulic cylinders for limb gait control A hydraulic cylinder control unit for gait control of a prosthetic limb which features two cylindrical tubes that are eccentric with respect to each other. The inner tube houses hydraulic fluid and the gap between the two tubes serves as a displacement ch... | 09/07/1999 |
| 5927523 | Rail car buffer A rail car buffer includes a standard capsule body and a high pressure hydraulic buffer spring only in the body. The hydraulic spring has a high compression ratio and is charged with very high pressure gas and hydraulic oil.... | 07/27/1999 |
| 5908123 | Rail car buffer and method A rail car buffer has a capsule body and a spring assembly with an elastomer spring and a gas filled hydraulic spring in the body. Expansion of the buffer after collapse is snubbed by the gas filled hydraulic spring to convert energy stored in the elastom... | 06/01/1999 |
| 5871109 | Railcar cushion device preload valving systems A pressure relief valving system for a rail car cushion device including several preload valves mounted in the cylinder wall of the cushion device each having both spring biasing and hydraulic biasing applied to retain a valve piston against a seat until ... | 02/16/1999 |
| 5862895 | Adjustable variable oleopneumatic shock-absorbing device An oleopneumatic shock absorbing device including a hydraulic fluid-filled cylinder (1) combined with a movable assembly moved by outside forces for circulating the hydraulic fluid. The movable assembly consists of a hollow mobile piston (3) on the end of... | 01/26/1999 |
| 5826735 | Railcar cushion device valving systems A valving system for a rail car cushion device including several pressure control relief sequence valves (PCRS) mounted in the cylinder wall of the cushion device each having hydraulic biasing applied to retain a valve piston against a seat until a preloa... | 10/27/1998 |
| 5720368 | Snubber for a hydraulic cylinder Snubbers are useful in dampening inertia loads at the end of stroke movement of hydraulic cylinders. The known snubbers have one part attached to a piston rod assembly and another part on the cylinder assembly thereby any misalignment between the piston r... | 02/24/1998 |
| 5642823 | Railcar shock absorber with neutral position A railcar shock absorber has neutral position in which the piston is spaced between buff and draft ends of the cylinder. An external spring is mounted to the shock absorber. A slider rod has one end mounted to the coupling to move relative to the frame of... | 07/01/1997 |
| 5598904 | Adjustable energy absorption device An adjustable energy absorption device includes an outer cylinder and a shock tube that is rotatably secured within the outer cylinder. The shock tube includes a series of groups of holes passing from the interior to the exterior surface of the tube. The ... | 02/04/1997 |
| 5566794 | Shock absorber having nonadjustable metering A nonadjustable shock absorber that can accommodate for variations in weight, and propelling force, and to provide a specific deceleration or reaction force. The shock absorber provides dual function metering that combines soft contact dampening with the ... | 10/22/1996 |
| 5487480 | Hydro-pneumatic cushioning device An end-of-car coupler includes a hydro-pneumatic cushioning device. The latter has a ported tube separating the hydraulic cylinder chamber from an outer annular chamber containing gas. Each port is fitted with a valve, the obturating member of each valve ... | 01/30/1996 |
| 5388711 | Rail car double acting piston shock absorber A shock absorber for use with a sliding center sill rail car utilizes an internal gas type spring. The shock absorber has a housing and a cylinder located in the housing that moves with the center sill. An annular outer chamber surrounds the cylinder with... | 02/14/1995 |
