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| Number | Title | Issue Date |
| 8151952 | Proportional control valve The invention relates to a proportional control valve for the variable hydraulic adjustment of the damping force of a shock absorber, for which purpose the proportional control valve has a throttle function which can be set by varying the strength I of the electric ... | 04/10/2012 |
| 7546911 | Suspension apparatus A suspension apparatus for use in a vehicle including a first liquid passage; a first connection portion; a first accumulator which is connected to the hydraulic suspension device via the first connection portion and the first liquid passage; a second liquid passage... | 06/16/2009 |
| 7386378 | Linear control of an automobile suspension A vehicle suspension system that includes a cylinder, a rod inserted within the cylinder, a piston coupled to the rod and a piston valve which has an input piston current. The suspension system further includes a base coupled to the cylinder, a base valve which has ... | 06/10/2008 |
| 7360756 | Vibration isolating bushing with embedded speed/position sensor A bushing assembly adapted for application in vehicle suspension systems includes an embedded position sensor and an embedded speed sensor. ... | 04/22/2008 |
| 7357395 | Device for controlling suspension performance of a vehicle having variable axle loads A device for controlling suspension performance in a vehicle having variable loads on an axle, a level control system, and a hydropneumatic suspension apparatus between unsprung and sprung masses. The device includes at least one double-acting hydraulic cylinder hav... | 04/15/2008 |
| 7347307 | Integrated damping adjustment valve A variable damper assembly (10) includes a cylinder head (42) with multiple valves (50) selectively blocking corresponding flow paths (54) to provide multiple dampening rates. Hydraulic fluid passing through flow paths (54) within ... | 03/25/2008 |
| 7308975 | Velocity sensing system for a damper A velocity sensor including a damper assembly having a central axis, a magnet extending parallel to the central axis, the magnet having a magnetic axis radially oriented with the central axis, and a coil extending parallel to the central axis and radially oriented w... | 12/18/2007 |
| 7299908 | Shock absorber A device for absorbing shocks, in particular for two-wheeled vehicles, having at least a chamber filled with a fluid medium; at least a piston means (20) movable in the longitudinal direction of the chamber ... | 11/27/2007 |
| 7270221 | Bicycle damping enhancement system A bicycle shock absorber and methods for differentiating between rider-induced forces and terrain-induced forces includes a first fluid chamber having fluid contained therein, a piston for compressing the fluid within the fluid chamber, a second fluid chamber couple... | 09/18/2007 |
| 7213689 | Shock absorber for a remote-controlled model car A shock absorber for a remote-controlled model car includes a sealing member fixed on the topside of a piston. The sealing member has two opposite flexible portions respectively matching with the flow-guiding holes of the piston, with flow gaps formed between the fl... | 05/08/2007 |
| 7198125 | Cab support system for an agricultural vehicle An agricultural vehicle includes a chassis and a cab supported on the chassis by means of a support system which maintains the cab level. The support system comprises two pairs of hydraulic actuators. Each pair of actuators is operative to tilt the cab relative to t... | 04/03/2007 |
| 7163208 | Hydropneumatic suspension system for vehicles A hydropneumatic suspension system for a vehicle with a level control, in particular for the front axle of a tractor, includes a first 2/2 directional control valve having a regulating-up function communicating with the pressurized oil pump and a second 2/2 directio... | 01/16/2007 |
| 7128192 | Inertia valve shock absorber A damper including a valve movable between an open position and a closed position to selectively alter the compression damping rate of the shock absorber. The valve may include a self-centering feature that operates to keep the valve body centered about the valve sh... | 10/31/2006 |
| 7100907 | Braking- and damping device, in particular for movable pieces of furniture A braking and damping device for movable pieces of furniture has a fluid-cylinder (1) in which two pistons (2, 5) are arranged in a linearly displaceable manner. One of the pistons (2) is displaceable by a piston rod (3). Arranged between... | 09/05/2006 |
| 7066957 | Device and assembly for intervertebral stabilization The invention concerns a staiblizing device (150) designed to link two vertebrae, comprising at least two chambers (156, 158, 186, 188) arranged proximate to said vertebrae, said chambers containing a shock absorbing fluid. Means (192, 194) are ... | 06/27/2006 |
| 7055831 | Hydropneumatic, level-regulated axle suspension on vehicles, in particular for full-suspension vehicles A hydropneumatic, level-regulated axle suspension for the front wheel axle and rear wheel axle on vehicles, in particular vehicles whose large axle load spread is large, having two double-acting hydraulic suspension cylinders, whose cylinder spaces are each connecte... | 06/06/2006 |
| 7028771 | Hydrocarbon recovery Low concentrations, 1–10% of potassium salt, especially potassium formate, are used in a drilling fluid in oil production. Preferably they are used with guar derivatives, most preferably carboxymethyl hydroxypropyl guar. The concentration of potassium formate is m... | 04/18/2006 |
| 6974143 | Hydraulic shock absorber for vehicle In a hydraulic shock absorber for a vehicle in which a slide pipe is slidably provided within a cylinder tube, and a working fluid chamber is provided within the cylinder tube and the slide pipe, a guide bush coated with a polytetrafluoroethylene and an oil seal sea... | 12/13/2005 |
| 6964325 | Integrated tagging system for an electronic shock absorber An integrated tagging system for an electronically controlled shock absorber having a shock absorber with damping characteristics unique to the shock absorber. An electronic control module is in electronic communication with the shock absorber for controlling the sh... | 11/15/2005 |
| 6962085 | Pressure detector having elongate housing containing pressure-sensitive element therein A pressure detector such as a combustion pressure sensor includes a pressure-sensitive element disposed in a cylindrical housing. Electrical signals responsive to pressure applied to the pressure-responsive element are generated in the element and led to output term... | 11/08/2005 |
| 6959796 | Adjustable damper with valve mounted in-line A damper includes an outer cylinder and an inner cylinder. The inner cylinder is disposed inside the outer cylinder and contains a rod and valve to define an upper working chamber and a lower working chamber. An adjustable valve portion fluidly communicates the uppe... | 11/01/2005 |
| 6929271 | Hydraulically compensated stabilizer system The present technique provides a stabilizer system comprising a plurality of piston cylinder assemblies, which have multiple interconnected chambers to provide cross compensation between suspension members coupled to those piston cylinder assemblies. The piston cyli... | 08/16/2005 |
| 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 |
| 6913126 | Impact damper An impact damper for deceleration of a vehicle impacting on all obstacle by hydraulic damping forces and gas spring forces includes at least inner and outer pipes telescopically displaceable one inside the other and defining an annular space therebetween with a base... | 07/05/2005 |
| 6837344 | Piston and rod assembly for air-actuated variable damping A damper includes a piston that carries a relatively compact control valve for controlling fluid flow through the piston. The control valve provides a variable amount of damping by regulating damper fluid flow between the extension chamber and the compression chambe... | 01/04/2005 |
| 6749045 | Passive force element on the basis of electrorheologic liquids A passive force element on the basis of electrorheological liquids includes a piston with a piston rod guided in a cylindrical housing, and a force introduction element connected with the piston rod. The piston forms, in the cylindrical housing, two variable-volume ... | 06/15/2004 |
| 6729446 | Solenoid-operated driving apparatus and damping force control type hydraulic shock absorber using the same A damping force control type hydraulic shock absorber includes a plunger having a small-diameter main body portion slidably guided by a first fixed core made of a magnetic material. The plunger has a large-diameter attracted portion at an end thereof closer to a sec... | 05/04/2004 |
| 6719101 | Safety brake with retardation-dependent braking force A safety brake for braking a load receiving portion of an elevator has at least one brake wedge that penetrates a gap between a resiliently supported pressure body and a guide rail for the load receiving portion of the elevator and thereby generates a braking force.... | 04/13/2004 |
| 6715591 | Spacecraft isolator launch restraint A spacecraft isolator including shape memory alloy components that are electronically heated to unlock the isolator. The isolator can be manually unlocked with an adjustment bolt. ... | 04/06/2004 |
| 6668986 | Active hydraulic fluid vehicular suspension damper A vehicular damper includes a cylinder, a piston rod in the cylinder having a hollow end defining an axial rod passage and a cylindrical piston affixed to the end of the rod dividing the cylinder into a compression chamber and a rebound chamber. A valve p... | 12/30/2003 |
| 6655509 | Impact damper An impact damper as a connecting member between a bumper and a chassis of a motor vehicle for the purpose of damping the shock loading during a collision between this motor vehicle and an obstacle through hydraulic damping forces and gas-spring forces. Th... | 12/02/2003 |
| 6637555 | Pneumatic connections for vehicle suspensions The invention provides a damper assembly (10) comprising a housing (12) defining an inner chamber (22, 24) having a damping fluid disposed therein. A piston rod (14) is slidably retained by the housing (12), and at least partially extends into, the chambe... | 10/28/2003 |
| 6540051 | Damping force device with adjustable damping force A damping device with variable damping force, including a cylinder, in which a piston rod is arranged axially movably, and an adjustable damping valve which is activated as a function of the compression travel of an axle part. The adjustable damping valve... | 04/01/2003 |
| 6454060 | Vehicle suspension monotube strut base cup assembly A vehicle suspension damper assembly is provided which includes a cup member with a threaded opening formed therein. A piston rod includes a threaded portion, which is engaged in the threaded opening. An electrical connector including a terminal portion i... | 09/24/2002 |
| 6394238 | Regenerative suspension for an off-road vehicle A hydraulic circuit controls a doubling acting cylinder of a vehicle suspension to provide load leveling and shock absorption functions. A set of solenoid valves control the application of pressurized hydraulic fluid from a supply line to the cylinder and... | 05/28/2002 |
| 6352142 | Active suspension system An active suspension system for an automotive vehicle includes a mono-tube shock absorber for passively absorbing impact from a wheel, an actuator formed around the mono-tube shock absorber, the actuator acting as a cylinder for a mono-tube shock absorber... | 03/05/2002 |
| 6345705 | Self-corrective vehicle shock absorber A shock absorber which is responsive to changes in inertia from turning, accelerating or stopping, the change in inertia blocking flow of damping fluid in the normal reactive direction and allowing flow in the opposite direction, the flow in the opposite ... | 02/12/2002 |
| 6321887 | Suspension control apparatus When a hydraulic cylinder apparatus operates in a direction such that the same damping force as a skyhook damping force cannot be produced, a command signal is applied so as to operate an active system (a fluid supply/discharge valve) and supply or discha... | 11/27/2001 |
| 6298958 | Automatically adjustable damping force shock absorber An automatically adjustable damping force shock absorber includes an outer cylinder; an inner cylinder provided in the outer cylinder; a piston inserted into the inner cylinder. The piston includes a plunger assembly slidably fitted in the inner cylinder ... | 10/09/2001 |
| 6216830 | Shock absorber A shock absorber adapted for use in attenuation of vibration for prevention of sudden increase or decrease of attenuating force of plate-like open/close valve to thereby improve a rideability of a vehicle, the shock absorber disposed with a piston having ... | 04/17/2001 |
