Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8177043 | Steering damping method for vehicle and steering damping device for vehicle A steering damper can generate a smaller damping force according to a first damping force characteristic or a larger damping force according to a second damping force characteristic by controlling a flow of hydraulic oil during a steering operation of a steering mem... | 05/15/2012 |
| 7766138 | Arrangement for telescopic fork leg with parallel damping A device for telescopic fork legs, preferably for a motorcycle or bicycle. The device is a compact removable unit that comprises parallel medium flow passages that run between upper and lower sides of the piston. This unit that is simple to adapt to different front ... | 08/03/2010 |
| 7635051 | Suspension system for motor vehicles A suspension system for motor vehicles with a level control for adjusting a predetermined height of the vehicle body is configured with at least one piston-cylinder unit which is provided with a work cylinder, a piston rod and a damping piston having damping valves,... | 12/22/2009 |
| 7604101 | Damping force control valve and shock absorber using the same The present invention relates to a damping force control valve and a shock absorber using the same. An object of the present invention is to provide a damping force control valve, in which the damping force characteristic at a high speed is maintained in a low level... | 10/20/2009 |
| 7448479 | Hydraulic damping force control unit, hydraulic shock absorber, front fork for vehicle, and hydraulic rotary damper A damping force is generated by keeping a damping force control valve closed when a piston of a hydraulic shock absorber starts to move from compression side dead center or expansion side dead center. A damping force control valve including a poppet valve for openin... | 11/11/2008 |
| 7438164 | Solenoid actuated continuously variable servo valve for adjusting damping in shock absorbers and struts 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... | 10/21/2008 |
| 7325660 | 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... | 02/05/2008 |
| 7306079 | Suspension system for motor vehicles A suspension system for a motor vehicle body having a level regulating device for setting a predetermined height of the motor vehicle body includes an outer tube and at least one piston-cylinder assembly arranged in the outer tube and having a working cylinder, a pi... | 12/11/2007 |
| 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 |
| 7255211 | Dashpot with amplitude-dependent shock absorption A dashpot featuring amplitude-dependent shock absorption, especially intended for the wheel of a vehicle and including a hydraulically parallel cylindrical pressure-compensation chamber (8). The pressure-compensation chamber is partitioned by an axially displ... | 08/14/2007 |
| 7124865 | Pressure regulating dampers A damper includes housing bounding a chamber. A barrier is movably disposed within the chamber so as to divide at least a portion of the chamber into a pressure compartment and a control compartment each having a volume, the volume of the pressure compartment and th... | 10/24/2006 |
| 7017719 | Vibration damper with adjustable damping force A piston is guided with freedom of axial movement in a damping medium-filled pressure tube, the piston dividing the pressure tube into a working space on the piston rod side of the piston and a working space on the side away from the piston rod. The medium can flow ... | 03/28/2006 |
| 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 |
| 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 |
| 6868947 | Piston for a hydraulic dashpot, and method of manufacturing such a piston A piston for a hydraulic dashpot. The piston (1) is mounted on one end of a piston rod (3), travels back and forth inside a cylinder (2), which it divides into two chambers (4 & 5), and has a body (10) provided with axial ch... | 03/22/2005 |
| 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 |
| 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 |
| 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 |
| 6527093 | Pressure controlled suspension damper A vibration damper for a vehicle suspension system includes a pumping cylinder concentrically aligned inside a housing defining a pumping chamber having a piston stroking therein for reducing the level of vehicle vibration. An intermediate cylinder define... | 03/04/2003 |
| 6474629 | Suspension system for motor vehicles A suspension system for motor vehicles with level regulation for adjusting a predetermined height of the vehicle body includes at least one piston-cylinder unit with a work cylinder, a piston rod and a damping piston having damping valves. A pump is conne... | 11/05/2002 |
| 6443272 | Vibration damper with adjustable damping force A vibration damper with adjustable damping force, having a cylinder in which a piston is guided with a piston rod so as to be axially movable. The piston divides the cylinder into a first and a second work space. At least one damping valve is arranged in ... | 09/03/2002 |
| 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 |
| 6419057 | Power-off damping in MR damper A magneto-rheological (MR) damper provides a higher than minimum level of damping when a power source to the MR damper is not supplying a control current. The present invention damper includes magnets positioned to direct a magnetic flux across a MR fluid... | 07/16/2002 |
| 6321888 | Damper with externally mounted semi-active system An automatic damper for an automobile automatic damper system which provides a compression valve operable to vary compressive damping characteristics of a damper, as well as a rebound valve operable to vary rebound damping characteristics of the damper. U... | 11/27/2001 |
| 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 |
| 6283259 | Hydraulic shock absorber A hydraulic shock absorber includes an inner cylinder filled with a working oil, an outer cylinder, and a reservoir defined between the inner and outer cylinders. A piston is slidably disposed within the inner cylinder so as to divide the interior of the ... | 09/04/2001 |
| 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 |
| 6254067 | Fluid regulating device for use with a hydraulic cylinder to obtain a variable shock absorbing effect A fluid regulating device includes a regulator housing that confines a valve receiving chamber and a fluid chamber filled with hydraulic fluid. The regulator housing is formed with a fluid opening that is in fluid communication with the valve receiving ch... | 07/03/2001 |
| 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 |
| 6112868 | Externally adjustable dampening control for a shock absorber An externally adjustable dampening control for a shock absorber provides the ability to adjust the hardness and softness of the ride near the normal curb/ride height, and still give strong resistance, and hence control, when the piston moves beyond the in... | 09/05/2000 |
| 6105740 | Hydraulic shock absorber The compensator is made separately from the cylinder of the shock absorber, and the two parts are prearranged for the reciprocal coupling with the possibility of articulation around said cylinder and/or around an axis, substantially perpendicular or ortho... | 08/22/2000 |
| 6000508 | Vibration damper and a damping valve with adjustable damping force for a vibration damper A damping valve, in particular for a vibration damper, including a cylinder filled with damping medium in which a piston rod with a piston is housed. The piston rod can move axially and the piston divides the cylinder into two working chambers. The dampin... | 12/14/1999 |
| 5988332 | Hydraulic shock absorber The compensator is made separately from the cylinder of the shock absorber, and the two parts are prearranged for the reciprocal coupling with the possibility of articulation and pivoting around an axis, substantially perpendicular or orthogonal to the ax... | 11/23/1999 |
| 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 |
| 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 |
| 5472070 | Controllable hydraulic vibration absorber A controllable hydraulic vibration absorber is disclosed whose power cylinder and a tube defines a connecting duct which affords a balance of volume between both power chambers of the vibration absorber and a balancing chamber which is formed between the ... | 12/05/1995 |
| 5467851 | Shock absorber with a check valve module and a check valve module for a shock absorber Shock absorber with adjustable damping force, comprising a cylinder, an axially movable piston rod with a piston connected to it, a number of fluid chambers with capacities which can be changed relative to one another as a function of the movement of the ... | 11/21/1995 |
| 5435421 | Hydraulic, adjustable vibration damper and a valve system for a hydraulic, adjustable vibration damper Hydraulic, adjustable vibration damper with a piston fastened to a piston rod, which piston divides a work cylinder into two work chambers filled with damping fluid, whereby at least partly to control the damping force, there is a valve system with at lea... | 07/25/1995 |
