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| Number | Title | Issue Date |
| 8006963 | Wheel-guiding pneumatic spring damper unit A pneumatic spring and damper unit (1) has working chambers (2,3) which are filled with compressed air and are partially defined by rolled bellows or corrugated bellows. The working chambers are superimposed and connected through throttle valves, arran... | 08/30/2011 |
| 7963509 | Travel control for a gas spring and gas spring having very short travel modes A gas spring capable of having long and short travel modes is described. The gas spring uses liquid in combination with pressurized air to affect the travel length. Unlike conventional gas springs, the gas spring according to the invention may have its travel reduce... | 06/21/2011 |
| 7273209 | Suspension apparatus A suspension apparatus for use in a vehicle including a body, a body-side member, a wheel, and a wheel-side member, the apparatus including a hydraulic suspension device which is adapted to be provided between the body-side member and the wheel-side member; a first ... | 09/25/2007 |
| 7204456 | Landing gear having a gas vessel, and methods of maintaining such landing gear A landing gear includes a shock absorber having first and second elements slidable relative to each other, the slidable elements defining an inside volume which is filled in part with hydraulic fluid so as to leave a first chamber filled with gas under pressure and ... | 04/17/2007 |
| 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 |
| 7114710 | Pneumatic vibration isolator In a pneumatic vibration isolator that includes a housing, an upper part with a first cylindrical side wall and a lower part with a second cylindrical side wall, a pneumatic spring is disposed in an annular gap between the first and the second cylindrical side wall ... | 10/03/2006 |
| 7114705 | Grab-activated self-locking winch handle A lock/release mechanism for the crank handle of a winch consists of a set of one or more pins that are captured within the drive head of the handle. Within the drive head is an actuation rod, which acts on these pins. Depending on the position of the rod, the pins ... | 10/03/2006 |
| 7100908 | Shock absorber/pneumatic spring strut The invention relates to a damper arrangement, in particular an air spring strut, comprising a shock absorber having an essentially cylindrical housing and an air spring with a working space which is under internal pressure, and comprising an additional volume which... | 09/05/2006 |
| 7083163 | Booster with spring to adapt air spring pressure for load dependent shock absorber A suspension system for a vehicle includes a frequency dependent damper (FDD) or shock absorber defining a first pressurized working chamber and an air spring assembly defining a second pressurized working chamber. A booster enables pressure communication between th... | 08/01/2006 |
| 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 |
| 7017893 | Pull-type suspension A suspension unit used in a pull type shock application is disclosed, whereby a main shaft passes completely through a damping fluid so that the shock absorber fluid is not compressed when the shock shaft is displaced. The shaft also acts on a compression spring by ... | 03/28/2006 |
| 7000907 | Spring system for bicycles The present invention relates to a spring system for bicycles having a first load-applying segment and a second load-applying segment as well as at least one positive spring and at least one negative spring arranged to be effectively operable between the first and t... | 02/21/2006 |
| 6910682 | Pneumatic-spring wheel-suspension leg A pneumatic-spring wheel-suspension leg for motor vehicles. The leg comprises a bellows (1) that can be rolled up over a jacket (3) and accommodates a pneumatics chamber (9), a hydraulic dashpot inside the bellows or jacket, and a piston rod ( | 06/28/2005 |
| 6893033 | Integrated air spring and strut A strut for a vehicle suspension includes a hydraulic cylinder housing defining a hydraulic fluid chamber. The hydraulic cylinder includes an air passage adjacent to the chamber and separated therefrom by a first common wall. An air spring is supported on an upper p... | 05/17/2005 |
| 6837343 | Shock absorber A shock absorber comprises first and second axially aligned cylinders (11, 21) each having a liquid filled piston chamber (12, 22), an axially displaceable piston (13, 23) received in the piston chamber (12,22), and means (14, 24) ... | 01/04/2005 |
| 6513797 | Damping arrangement for suspension system A damper comprises a first chamber and a second chamber separated by a piston. At least one of the chambers includes an axially moveable member and an axially fixed member. A resilient or compressible member is positioned between the axially moveable memb... | 02/04/2003 |
| 6386525 | Dual volume air spring for suspensions A dual volume air spring for a truck suspension, which has an air bag chamber providing a variable volume and a fixed volume chamber. The chambers are interconnected by a closable orifice. The air bag is provided with a post-like orifice closer which is p... | 05/14/2002 |
| 6378848 | Gas spring apparatus A gas spring apparatus comprises an outer tube, a cylinder held in the outer tube, and a rod having a piston located in the cylinder. The rod is inserted into the cylinder through a sealing portion. The interior of the cylinder is divided in two, a first ... | 04/30/2002 |
| 6375170 | Spring system The invention is directed to a spring system for a vehicle including a two-wheel vehicle. The spring system includes first and second spring units mounted coaxially to each other. The first spring unit includes a first roll-off piston and a first rolling-... | 04/23/2002 |
| 6361027 | Shock absorber with flexible connection between an airlift component and top mount An air lift shock absorber for an automotive suspension system includes a damping piston slidable within a housing, a piston rod extending from the housing to a top mount assembly including a rigid top mount housing and a force absorbing member within the... | 03/26/2002 |
| 6311962 | Shock absorber with external air cylinder spring A gas spring shock absorber (10) includes a damping fluid cylinder (14) telescopically housed within a gas cylinder (12). A shaft (16) connects a sealed, outer end (18) of the gas cylinder (12) with a vented piston (32) movably mounted within damping flui... | 11/06/2001 |
| 6263556 | Temperature compensating gas spring strut and method of making An apparatus and a method of making an automatic temperature compensating gas spring strut, the method comprising providing an outer cylinder having opposite ends with one end closed and the other end apertured to permit movement of the strut therethrough... | 07/24/2001 |
| 6237889 | Seat suspension assembly A seat assembly for accommodating vibrations imparted thereto including a seat having a bottom surface, a frame including a base secured to a fixed surface and a support member extending upwardly therefrom. A substantially rigid pivot member is provided w... | 05/29/2001 |
| 6105988 | Adjustable suspension system having positive and negative springs A suspension system having first and second elements telescopingly engaged and being biased apart by a positive spring, such biasing being counteracted by a negative spring. In one embodiment, the positive spring and negative spring are disposed in the fi... | 08/22/2000 |
| 6102418 | Hydropneumatic suspension system A hydropneumatic suspension system, particularly for wheel support in motor vehicles, with at least one spring arrangement (1, 2) having at least one hydraulic spring strut (4), at least one hydropneumatic spring reservoir (6) and at least one damping val... | 08/15/2000 |
| 6059273 | Gas spring arrangement The invention relates to an arrangement for a gas spring. The arrangement comprises a cylinder (1). At its one end, this is delimited by a fixed end wall (2), and at its other end there is a first guide (3) sealed against the inner wall of the cylinder (1... | 05/09/2000 |
| 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 |
| 5947240 | Load vibration isolation apparatus A damping mounting structure for use between two members for isolating motion changes which incorporates a plurality of dampers connected between the two members in a closed geometric shape and which uses cross connections between the dampers located on o... | 09/07/1999 |
| 5918865 | Load isolator apparatus A damping mounting structure for use between two members for isolating motion changes which incorporates a plurality of dampers connected between the two members in a closed geometric shape and which uses cross connections between the dampers located on o... | 07/06/1999 |
| 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 |
| 5833218 | Degressive gas spring The invention relates to a degressive gas spring. This has two cylinder-piston units (1, 2), one of which is selected as a working spring (1) and the other as a slave spring (2), the cylinders (1a; 2b) and the ends of the piston rods (1b; 2b) of which are... | 11/10/1998 |
| 5803213 | Heavy load vibration isolation apparatus A damping mounting structure for use between two members for isolating motion changes which incorporates a plurality of dampers connected between the two members with spring members operating in parallel with the dampers to provide stiffness and where the... | 09/08/1998 |
| 5794924 | Pneumatic or hydropneumatic spring system A pneumatic or hydropneumatic spring system, especially for motor vehicles, has a plurality of separate spring units among which a valve-controlled pneumatic or hydraulic pipeline system is disposed. Thereby, the spring units can be connected to or discon... | 08/18/1998 |
| 5775677 | Air or gas sprung and dampened shock absorber An air or gas sprung and dampened shock absorber for a bicycle is set forth comprising a cylinder having a closed end and an open end forming a compression chamber, a shaft having a closed end and an open end, the open end of the shaft being reciprocally ... | 07/07/1998 |
| 5624105 | Hydropneumatic suspension system The invention pertains to a hydropneumatic suspension system, in particular for motor vehicles, with at least one hydraulic strut (2) that acts upon at least one hydropneumatic piston-type accumulator (6) during deflection and rebound movements. The pisto... | 04/29/1997 |
| 5522941 | Underwater washing method and device A method and device for jetting a pressurized water flow against a material under water to cause cavitation to wash the material. A negative pressure generated by the pressurized water flow is used to draw an air current and mix it into the pressurized wa... | 06/04/1996 |
| 5458218 | Suspension system for motor vehicles as well as damping valve for said suspension system A suspension system with at least one hydraulic spring strut. At least a portion of the hydraulic medium is displaced into a hydropneumatic spring reservoir during the compression movement of the spring strut, and that portion of the hydraulic medium flow... | 10/17/1995 |
| 5454455 | Cylinder piston device In a cylinder piston device the piston when approaching the end of the cylinder abuts against an indentation of the cylinder and is tilted or angled by the abutment, on the one hand, and by an axially directed force acting onto the piston rod, on the othe... | 10/03/1995 |
| 5364081 | Motor vehicle suspension system A moved mass of hydraulic medium is used as a compensating mass at critical frequencies of the suspension system to achieve a frequency-selective dynamic damping, and a suitable hydraulic transmission ratio can ensure that a relatively small quantity of h... | 11/15/1994 |
| 5344124 | Suspension system The present invention pertains to a suspension system, in particular, for wheel support of motor vehicles with at least one shock absorber leg consisting of a cylinder and a piston moving in this cylinder for contraction and extension, and actuated by a h... | 09/06/1994 |
