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| Number | Title | Issue Date |
| 7487863 | Pressure container in a vibration damper Vibration damper with a damping medium-filled cylinder, in which a piston rod is installed with freedom of axial movement, and a pressure container, which is connected to the vibration damper by an adapter piece. The adapter piece comprises a connecting part, which ... | 02/10/2009 |
| 7258211 | Rotary damper A rotary damper having an oil chamber within a housing which is divided into two by a vane, and generates a damping force by passing operating oil between the two oil chambers when the vane oscillates, has a shaft supporting the vane to allow oscillation in relation... | 08/21/2007 |
| 7204184 | Guide system with pneumatic stop for a movable component In a guide system with a pneumatic stop structure comprising a cylinder with a piston including a piston seal element movably disposed in the cylinder and a piston rod connected to the piston and extending from the cylinder wherein a displacement chamber is formed a... | 04/17/2007 |
| 7178764 | Device for operating rail switches In a device for operating rail switches, in which a plurality of mutually coupled hydraulic operating devices are arranged in an offset manner in the longitudinal direction of the rails, the cylinder-piston units of the hydraulic operating devices are connected to b... | 02/20/2007 |
| 7097012 | Compact temperature compensating gas spring A compact temperature compensating gas spring including a gas filled hollow cylinder and a piston assembly slidably received in the gas filled hollow cylinder. The piston assembly includes a piston head and a piston rod. The piston rod includes a temperature compens... | 08/29/2006 |
| 7097212 | Mechanism A mechanism for selectively locking and unlocking a vehicle door latch, comprising a rheological fluid in operable connection with an output and an input, the fluid acting so as to in a first state prevent actuation of the output upon actuation of the input and in a... | 08/29/2006 |
| 7066310 | Piston-cylinder unit A piston is guided in an axially displaceable manner sealed off from a closed cylinder via an annular seal radially surrounding it, and divides the cylinder interior into a working space near the piston rod and a working space away from the piston rod. The two worki... | 06/27/2006 |
| 7048098 | Toroidal rotary damper apparatus A toroidal rotary damper apparatus includes a housing having a toroidal inner housing surface and a piston moveable in the housing having a curved outer peripheral piston surface in engagement with the inner housing surface. A fluid barrier is attached to the housin... | 05/23/2006 |
| 7017720 | Front fork An object of the present invention is to provide a front fork with a double-rod damper, which can improve an efficiency of an assembly operation thereof by simplifying alignment work of piston rods on assembly. To achieve this object, a front fork (30) compri... | 03/28/2006 |
| 6974005 | Vibration damper with overload protection Vibration damper comprising a damping medium-filled pressure tube, in which a displacer is installed, where a damping device produces a damping force as a function of the movement of the displacer. A damping force-limiting device, independently of the flow of the da... | 12/13/2005 |
| 6974001 | Temperature compensating gas spring A gas spring provides an outer cylinder which is partitioned into a multiple of auxiliary volumes. A multiple of temperature compensation valves are located within a piston cylinder which sequentially open or close. As the temperature increases, the temperature comp... | 12/13/2005 |
| 6959906 | Blow-off valve for a hydraulic dashpot A blow-off valve for a hydraulic dashpot comprising a fluid charged cylinder (1) and a piston (3) that travels back and forth therein on the end of a piston rod. The piston partitions the cylinder into two compartments (6 & 7) and is prov... | 11/01/2005 |
| 6934996 | System for actuating a gas damper A gas-filled cylinder, with two concentric cylindrical bodies or tubes that determine an intermediate gas passage chamber and are separated by a shaft cap and a valve cap that allow the passage of gas towards the interior, in which a piston moves and forms two inter... | 08/30/2005 |
| 6918472 | Arrangement for a piston and cylinder device The hydraulic cylinder or shock absorber arrangement has a cylinder unit limiting an inner space in which a medium in the form of a gas or a liquid is intended to be placed. A forwardly and backwardly movable piston unit is placed such that it can slide within the s... | 07/19/2005 |
| 6659240 | Arrangement for a piston and cylinder device The hydraulic cylinder or shock absorber arrangement has a cylinder unit limiting an inner space in which a medium in the form of a gas or a liquid is intended to be placed. A forwardly and backwardly movable piston unit is placed such that it can slide w... | 12/09/2003 |
| 6386345 | Controlling movement of a seat in a vehicle A control assembly for use in regulating movement of a vehicle seat back is provided. The control assembly uses damping fluid to regulate the degree of damping applied to the seat back. The control assembly includes one or more initiator assemblies. A sel... | 05/14/2002 |
| 6244982 | Hydraulic chain tensioner with a piston having a plurality of sliding elements A hydraulic tensioning device for a power transmission system having a belt or a chain includes a cylinder and piston assembly of which a movable element, generally the piston, acts on the belt or chain so as to ensure that it is tensioned and thus ensure... | 06/12/2001 |
| 6179099 | Gas spring having an intermediate stop function and temperature compensation A gas spring includes a cylinder containing a fluid at least part of which is a compressed gas. The cylinder receives a piston that is affixed to a piston rod and divides the cylinder into two working chambers. The piston has a one-way valve that is cycle... | 01/30/2001 |
| 6092632 | Gas spring with temperature compensation A gas spring has a single bypass across the piston that is controlled by a valve member of an elastomeric material, which restricts flow through the bypass when the gas spring is compressed (piston rod moving into the cylinder) and produces a pressure dif... | 07/25/2000 |
| 5967268 | Temperature responsive damper A shock absorber demonstrating temperature conscious damping includes an auxiliary valve for passing damping fluid between the compression side and the rebound side. The auxiliary valve opens at lower temperatures and closes at higher temperatures. The va... | 10/19/1999 |
| 5937988 | Throttle device for hydraulic actuator systems and for hydraulic actuator systems of clutches of motor vehicles A throttle device for the directionally-dependent influencing of the flow velocity of the fluid in hydraulic actuator systems, in particular of friction clutches in motor vehicles, with a throttle located between a master cylinder and a slave cylinder in ... | 08/17/1999 |
| 5901821 | Rotary damper A rotary damper for stabilizing a temperature characteristic while allowing a leakage of operating oil from a clearance between a basic portion of a rotor and a bearing end on the casing side for supporting said rotor with relative rotational motion betwe... | 05/11/1999 |
| 5884733 | Temperature compensating system for fluid-damped suspension systems A temperature compensating system for a closed system, such as a damping system, in which fluid is subject to temperature increases and accompanying volume increases. The temperature compensating system provides a compressible member within a temperature ... | 03/23/1999 |
| 5743362 | Temperature compensated viscous damper A damper is provided which includes a first cylinder containing a viscous fluid. The first cylinder is sealed at both ends by end plates. The first cylinder is adapted for connection to a structure such as a building or a bridge. A piston head within the ... | 04/28/1998 |
| 5722643 | Temperature compensated safety gas spring A gas spring includes a piston assembly or pack having an additional seal, pressure relief valve, and check valve that increases the output force of the gas spring. Various temperature compensation structures, also added to the piston pack, permits this i... | 03/03/1998 |
| 5606503 | Suspension system control responsive to ambient temperature A suspension system control according to the steps of: determining an actuator demand force command; determining, responsive to vehicle speed, a first signal indicative of a first maximum demand force; determining, responsive to ambient temperature, a sec... | 02/25/1997 |
| 5404972 | Self-blocking gas spring with temperature-responsive bypass valve A gas spring comprises a first bypass with a one-way valve that allows fluid to bypass the piston when the piston moves outward and a second bypass with a temperature-compensating spring-biased one-way valve that allows fluid to bypass the piston when the... | 04/11/1995 |
| 5386896 | Torsional vibration damping device and lock-up clutch in torque converter A torsional vibration damping device located between an input member and an output member of a power transmission device comprises a case and a slider. The case is connected to either the input or output member, extends circumferentially and contains flui... | 02/07/1995 |
| 5282609 | Pneumatic counterbalance stay A partitioning body is fixed to an inner wall of a gas-charged cylinder to separate the cylinder into an actuating chamber and a pressure accumulating chamber, and a thermo-actuator is provided in the partitioning body. A plunger valve device comprising a... | 02/01/1994 |
| 5106065 | Self-blocking gas spring with temperature-responsive bypass valve A gas spring comprises a first bypass with a one-way valve that allows fluid to bypass the piston when the piston moves outward, a second bypass with a spring-biassed valve that allows fluid to bypass the piston when the piston is pushed inward with a for... | 04/21/1992 |
| 5099966 | Method and apparatus for regulating the damping of rotating masses A method and apparatus for regulating the damping of masses rotating on roller bearings. An oil pressure film in an oil pressure gap has its viscosity changed via temperature control as a function of the vibrating condition of the rotating masses in order... | 03/31/1992 |
| 5074389 | Peripherally valved, temperature-compensated shock absorber A shock absorber of the type having a hydraulic cylinder and piston is disclosed. The hydraulic cylinder is filled with an elevated viscosity fluid having slight compressibility which exhibits pseudo-plastic flow. The piston has an associated thermal expa... | 12/24/1991 |
| 4958706 | Adjustable shock absorbers An adjustable shock absorber includes a valve in the piston which has a flow path. The valve can be adjusted both rotationally and longitudinally to alter different characteristics of the flow path.... | 09/25/1990 |
| 4838392 | Semi-active damper for vehicles and the like The damper assembly has improved valve means that includes at least one annular movable valve member of the voice-coil type. Such valve member is formed at least in part of composite material that increases the strength and stiffness of the member, while ... | 06/13/1989 |
| 4799577 | Telescopic hydraulic shock absorber with temperature sensitive wire to control damping A telescopic hydraulic shock absorber with controlled damping comprising a cylinder (1), within which a piston (6) connected to the end of a rod (7) can reciprocate, the piston having at least one restricted passage (12) interacting with an elastic flap (... | 01/24/1989 |
| 4726452 | Fluid flow control apparatus A shock absorbing mechanism has a fluid filled pressure chamber with a piston mounted therein along with a restrictive orifice leading to an outer chamber. When shock is transmitted by the piston, fluid is forced through the opening against compressed gas... | 02/23/1988 |
| 4485899 | Shock absorber unit for vehicles In a shock absorber unit for vehicles of the double-tube type a piston rod guiding and sealing unit is provided adjacent a first end of a cylinder and a container surrounding the cylinder, and a bottom valve unit is provided at a second end of the cylinde... | 12/04/1984 |
| 4423800 | Shock absorber with improved compression valve mechanism An improved compression valve mechanism for a shock absorber comprising an upwardly facing annular valve seat on the shock absorber piston, an annular valve seat engaging member having an exterior periphery spaced closely from the interior periphery of th... | 01/03/1984 |
| 4408751 | Multi-chamber temperature compensated pneumatic counterbalance A pneumatic, piston/cylinder counterbalance in which the counterbalance force is obtained by differential pressure across the piston and in which the force changes due to temperature are compensated by use of a variable volume cylinder having one or more ... | 10/11/1983 |
| 4369864 | Shock absorber including thermostatically controlled fluid flow passage A hydraulic shock absorber includes a split ring surrounding the piston head and being mounted thereon so as to maintain a slight radial play between the ring and the shock absorber casing, and to maintain a slight longitudinal play between the ring and t... | 01/25/1983 |
