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| Number | Title | Issue Date |
| 8047340 | Suspension spring adjusting apparatus of hydraulic shock absorber In a suspension spring adjusting apparatus of a hydraulic shock absorber, a mounting mating surface sealed by a spring adjusting case and a seal material of a case cover is formed in a flat surface shape, and an outer peripheral edge of the case cover is provided wi... | 11/01/2011 |
| 7950506 | Semi third tube design A shock absorber has an external valve that controls the damping loads for the shock absorber. The external valve extends generally parallel with the axis of the shock absorber and is attached to the reserve tube of the shock absorber. The inlet to the external valv... | 05/31/2011 |
| 7926632 | Shock absorber having a continuously variable valve with base line valving A shock absorber includes an external control valve which controls the damping characteristics of the shock absorber. The external control valve controls the flow of fluid between the lower working chamber of the shock absorber and the reservoir chamber and between ... | 04/19/2011 |
| 7591352 | Damping valve and shock absorber using same A damping valve (102) comprises: a first valve element (16); a first valve seat (15) in which the first valve element (16) is seated; a second valve element (26) placed in series with the first valve element (16); a second v... | 09/22/2009 |
| 7407044 | Variable damping valve of shock absorber A variable damping valve of a shock absorber is capable of properly adjusting a damping force according to read conditions, travel conditions and the like while a vehicle is traveling, thereby improving ride comfort and control stability. A flow of oil is controlled... | 08/05/2008 |
| 7333882 | Suspension control apparatus In a suspension control system a sky-hook command signal (B) obtained from velocity data obtained by integrating a sprung mass acceleration (αu) from a sprung mass acceleration sensor (9u) and an unsprung mass vibration damping command signal (C) obta... | 02/19/2008 |
| 7314124 | Vibration damping apparatus A damping apparatus for damping vibrations in a vibrating system including a piston which is reciprocally movable in a hydraulic fluid filled damper chamber, piston movement in either direction of movement being resisted by fluid pressure in the damper chamber behin... | 01/01/2008 |
| 7273138 | Damping force variable valve and shock absorber using same A damping force variable valve includes a main valve provided between a high pressure section and a low pressure section, for allowing a flow of oil from the high pressure section into the low pressure section when the main valve is opened, the main valve being capa... | 09/25/2007 |
| 7252181 | Air pressure proportional damper A suspension system includes an air spring and a shock absorber disposed between the sprung and unsprung portions of a vehicle. A vehicle height sensor sends signals to a control system which adjusts the height of the vehicle by increasing or decreasing the air pres... | 08/07/2007 |
| 7243763 | System comprising magnetically actuated motion control device A system that includes a magnetically actuated motion control device comprising a housing defining a cavity and including a slot therethrough. A movable member is located within the cavity and is movable relative to the housing. A magnetic field generator located on... | 07/17/2007 |
| 7111711 | Vibration damper with stroke-dependent damping force Vibration damper, containing a damping medium-filled cylinder, in which a piston rod with a piston is installed with freedom of axial movement, where, as a function of the stroke of the piston, a bypass connects a working space on the piston rod side to a working sp... | 09/26/2006 |
| 7076351 | Enhanced computer optimized adaptive suspension system and method A system and method for controlling a damping system. The system has at least two dampers for damping between sprung and unsprung masses in the compression and rebound directions. Sensors generate signals based on position and other parameters of motion representati... | 07/11/2006 |
| 6978871 | Adjustable damper with control valve, mounted in an external collar A shock absorber according to the present invention includes a pressure tube having a working chamber disposed therewithin. A piston is slidably disposed within the working chamber and divides the working chamber into an upper working chamber and a lower working cha... | 12/27/2005 |
| 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 |
| 6851528 | Shock absorber with adjustable valving A shock absorber includes a shock rod and piston which are disposed within a fluid chamber within a shock body. The piston separates the shock body fluid chamber into a compression fluid chamber and a rebound fluid chamber. A reservoir fluid chamber accommodates the... | 02/08/2005 |
| 6793048 | Solenoid actuated continuously variable shock absorber A shock absorber includes a pressure tube with a piston slidably disposed therein. A separate valve includes a fluid circuit for fluid low in rebound and a fluid circuit for fluid flow in compression. Each fluid circuit includes a variable orifice which allows selec... | 09/21/2004 |
| 6793049 | Acceleration sensitive damping for automotive dampers A shock absorber having a pair of valve assemblies which include an acceleration sensitive valve which couples the working chamber of the shock absorber to the shock absorber's reservoir chamber through a fluid path to provide a soft damping characteristic for the s... | 09/21/2004 |
| 6581733 | Acceleration sensitive damping for automotive dampers A shock absorber having a pair of valve assemblies which include an acceleration sensitive valve which couples the working chamber of the shock absorber to the shock absorber's reservoir chamber through a fluid path to provide a soft damping characteristi... | 06/24/2003 |
| 6464048 | Solenoid actuated continuously variable shock absorber A shock absorber includes a pressure tube with a piston slidably disposed therein. A separate valve includes a fluid circuit for fluid low in rebound and a fluid circuit for fluid flow in compression. Each fluid circuit includes a variable orifice which a... | 10/15/2002 |
| 6427986 | Air suspension apparatus An air chamber (53) of a damping force adjusting mechanism (49) disposed in a hydraulic shock absorber (3) of a damping force adjusting type communicates with an air chamber (7) of an air spring through a tubular path (57). A free piston (51) is transferr... | 08/06/2002 |
| 6318525 | Shock absorber with improved damping The present invention provides a shock absorber having improved damping. On the base of the shock absorber there is fastened the bottom of a barrel on which rests the counter-acting spring which urges in expansion the piston of the shock absorber. The bar... | 11/20/2001 |
| 6311812 | Device and application involving two parts working away from and towards each other and energy-absorbing device A device, e.g. a pressure regulator, for realizing an opening and/or closing function in connection with the force-velocity curves of the device incorporates two parts which work away from and towards each other at different velocities and accelerations, ... | 11/06/2001 |
| 6305512 | Valve which reacts as a function of pressure, especially for a vibration damper A pressure operated valve is provided including an adjusting device, a spring and a vent connection. The adjusting device is axially movably arranged in a pressure chamber defined in the valve and comprises a valve body and a pressure intensifier. A space... | 10/23/2001 |
| 6302248 | Damping force control type hydraulic shock absorber The flow of a hydraulic fluid between connecting ports caused by sliding movement of a piston in a cylinder is controlled by a fixed orifice and the flow path area determined by ports that is varied by a spool, thereby directly controlling orifice charact... | 10/16/2001 |
| 6269918 | Damping force control type hydraulic shock absorber The flow of a hydraulic fluid caused by sliding movement of a piston in a cylinder is controlled by a disk valve and extension- and contraction-side main valves, thereby generating damping force. By controlling the valve opening pressures of the disk valv... | 08/07/2001 |
| 6182805 | Damping force control type hydraulic shock absorber The flow of a hydraulic fluid caused by sliding movement of a piston is controlled through a sub-disk valve, a main disk valve and a disk valve to generate damping force. A coil is energized to urge a plunger in the valve closing direction against spring ... | 02/06/2001 |
| 6155391 | Hydraulic shock absorber of a dumping force adjustable type A hydraulic shock absorber of a damping force adjustable type generates a damping force by controlling the flow of an oily fluid caused to occur by the slidable movement of the piston in the cylinder by means of a subsidiary disc valve, a main disc valve ... | 12/05/2000 |
| 6135250 | Hydropneumatic vibration damper of variable damping force Disclosed is a hydropneumatic vibration damper of variable damping force, with a cylinder which is arranged between a piston rod guide and a bottom valve and in which a piston provided with at least one valve and connected to a piston rod subdivides the c... | 10/24/2000 |
| 6119829 | Hydraulic shock absorber with variable damping resistance A hydraulic shock absorber includes disc valves seated on valve seats, and annular retainer discs having a diameter less than that of the valve seat. The retainer discs are guided by spacers and axially separable from the disc valves. Annular seal discs a... | 09/19/2000 |
| 6079526 | Damping force control type hydraulic shock absorber A damping force control type hydraulic shock absorber is provided having a broad damping force control range and is capable of obtaining appropriate damping force over the entire piston speed range from a low speed region to a high speed region. A piston ... | 06/27/2000 |
| 6044939 | Vibration damper, for a motor vehicle, with adjustable damping force The cylinder is filled with damping medium. The vibration damper also includes a damping valve which is active as a function of pressure. The damping force of the damping valve can be modified by means of an actuator against a spring force on a shutoff va... | 04/04/2000 |
| 6035979 | Vibration damper and a vibration damper with a damping valve having an adjustable damping force A damping valve for a vibration damper including a cylinder filled with damping medium. A piston rod with a piston is realized in the cylinder so that the piston rod can move axially and the piston can divide the cylinder into two working chambers. The da... | 03/14/2000 |
| 6003644 | Damping force variable hydraulic shock absorber In a damping force variable hydraulic shock absorber 6 including a main valve 18 for opening and closing a main passageway 19 communicating with two main oil chambers 7a, 7b defined by a piston 9 within a cylinder 7, an auxiliary oil chamber 31 for causin... | 12/21/1999 |
| 5988331 | Vibration damper with adjustable damping force Disclosed is a vibration damper with an adjustable damping force and a method of producing the same. The adjustable vibration damper has a container tube to which is connected a shut-off valve arrangement. A damping medium is fed to the shut-off valve arr... | 11/23/1999 |
| 5975586 | Connection device for connecting a liquid or gaseous medium through an outer wall of a cylinder The invention relates to a connection device for a liquid or gaseous medium through an outer wall of a cylinder, whereby a connection piece interacts with a bore in the outer wall of the cylinder and with a centering part that is inserted into the bore. T... | 11/02/1999 |
| 5960915 | Hydraulic shock absorber of damping force adjusting type The present invention provides a hydraulic shock absorber in which a damping force can be changed nearly linearly as a valve body driven by a proportional solenoid is displaced, by utilizing ports and a oil groove which can easily be formed by a conventio... | 10/05/1999 |
| 5937975 | Vibration damper for a motor vehicle and a vibration damper having a damping valve with adjustable damping force for a motor vehicle A vibration damper has a cylinder filled with damping medium. In the cylinder, a piston rod with a piston is realized so that the piston can move axially. The piston divides the cylinder into two working chambers. The vibration damper also has a damping v... | 08/17/1999 |
| 5924528 | Load depending damping assembly A shock absorber having variable damping characteristics for damping the movement of the body of an automobile is disclosed. The shock absorber includes a variable flow control valve which modulates the rate of fluid flow between the upper portion of the ... | 07/20/1999 |
| 5901820 | Hydraulic shock absorber A piston is slidably fitted in a cylinder for dividing the interior of the cylinder into upper and lower cylinder chambers. The upper cylinder chamber communicates with the lower cylinder chamber through a check valve. The lower cylinder chamber communica... | 05/11/1999 |
| 5788028 | Method for compensating a control signal for a shock absorber of a motor vehicle A method is shown for determining an operating temperature of a continuously variable hydraulic shock absorber and compensating a control signal therefore. A solenoid 62 provides continuous variability in the damping level a shock absorber produces. The s... | 08/04/1998 |
