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| Number | Title | Issue Date |
| 8177041 | Damper assemblies and vehicles incorporating the same A damper assembly includes damper body, a piston assembly and a pulser. The damper body is operable to maintain a fluid. The piston assembly may include a piston rod and a piston plunger. The piston plunger and at least a portion of piston rod is slidably positioned... | 05/15/2012 |
| 7694785 | Controllable damping force hydraulic shock absorber A controllable damping force hydraulic shock absorber including a pilot type damping valve having a back-pressure chamber for each of an extension stroke and a compression stroke. A piston connected to a piston rod is fitted into a sealed cylinder in which a hydraul... | 04/13/2010 |
| 7654369 | Hydraulic vibration damper piston with an integral electrically operated adjustment valve A vibration damper piston includes a piston body with a bore from which first and second apertures respectively provide paths to first and second chambers of the vibration damper. A valve spool in the bore defines a pilot chamber and controls fluid flow between the ... | 02/02/2010 |
| 7413062 | Electronically controlled frequency dependent damping A gas damper includes a gas pressurized working chamber and valving within the piston to control flow of the gas through the piston. A system is in communication with the working chamber to control the gas pressure within the working chamber in order to control the ... | 08/19/2008 |
| 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 |
| 7320387 | Load adaptive damper with transient air signal restrictor A shock absorber for a vehicle suspension includes a pneumatic actuator that is fluidly connected to a compressed air source in the vehicle suspension, such as a suspension air bag. The pneumatic actuator cooperates with an adjustment mechanism housed within the sho... | 01/22/2008 |
| 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 |
| 7234574 | Damping coefficient switching-type hydraulic damper There is disclosed a damping coefficient switching-type hydraulic damper that may automatically switch a damping coefficient without needing supply of energy from the outside at all, and also may always surely exert an energy absorption capacity greater than that of... | 06/26/2007 |
| 7143875 | Attenuation coefficient switching type hydraulic damper A hydraulic damper used for reducing shaking of a structure, for example in an earthquake. The hydraulic damper has a cylinder, a piston movable in a reciprocating manner within the cylinder, hydraulic chambers at opposite sides of the piston, and a single on-off co... | 12/05/2006 |
| 7137491 | Shock absorber non-vibrating check valve assembly A check valve assembly for a shock absorber includes a tapered valve seat and a polygonal check valve which includes a plurality of flat surfaces. Each pair of flat surfaces intersects at a linear engagement surface which slidably engages a cylindrical chamber. When... | 11/21/2006 |
| 7104139 | System and method for load sensing using piezoelectric effect System and method for measuring static load by using a piezoelectric load sensor with a feedback technique to compensate for the signal loss due to charge leakage, and therefore ensures measurement accuracy. The system is integrated with other structure, objects and... | 09/12/2006 |
| 7104369 | Vibration damper with stroke-dependent damping force A piston rod with a piston is installed with freedom of axial movement in a damping medium-filled cylinder, where, as a function of the stroke position of the piston, a bypass connects the two working spaces separated from each other by the piston. The piston has at... | 09/12/2006 |
| 7062367 | Vehicle actuator remote control system The control system includes a microprocessor based radio frequency receiver module and a radio frequency handset transmitter module. The microprocessor receives a specific input from the remote transmitter. The handset transmitter module contains two joysticks. Two ... | 06/13/2006 |
| 7011325 | Adjustable length suspension fork for a bicycle An improved, lightweight suspension fork for a bicycle with variable travel capability that maintains excellent torsional rigidity. This suspension fork allows for adjustable suspension travel adjusted at the handlebars of the bicycle. The suspension system includes... | 03/14/2006 |
| 7001671 | Kinetic sprayed electrical contacts on conductive substrates The present invention is directed to electrical contacts that comprise spaced electrically conductive particles embedded and bonded into the surface of conductors in which the particles have been kinetically sprayed onto the conductors with sufficient energy to form... | 02/21/2006 |
| 6926288 | Electromagnetic interference filter An electromechanical actuator in a vehicle suspension system includes a housing having a first section adapted to affix to a vehicle body and a second section adapted to affix to a vehicle wheel assembly suspended to the vehicle body, the first and second sections c... | 08/09/2005 |
| 6915885 | Oscillation damper with adjustable damping force Oscillation damper with variable damping force, comprising a valve device, in which an actuator for adjusting the valve device performs a rotary motion against the spring force of a torsion spring, the position of the valve device being determined from the manipulat... | 07/12/2005 |
| 6913128 | Piston-cylinder assembly having a speed-dependent damping force A piston rod is guided in an axially movable manner within a cylinder filled with a damping medium, and a piston is arranged on the piston rod, which piston divides the cylinder into a working space on the piston-rod side and a working space remote from the piston r... | 07/05/2005 |
| 6814347 | Booster to adapt air spring pressure for FDD shock absorber A suspension system for a vehicle includes a frequency dependent damper (FDD) shock absorber defining a first pressurized working chamber. An air spring assembly defines a second pressurized working chamber. A booster enables pressure communication between the first... | 11/09/2004 |
| 6793047 | Hydraulic dashpot A hydraulic dashpot comprises, first, a cylinder and a piston. The cylinder (1) is charged with shock-absorbing fluid. The piston (3) is provided with ports and valves, is mounted on one end of a piston rod (2) and divides the cylinder into two ... | 09/21/2004 |
| 6715744 | Air spring shock absorber module with internal load-based damping adjustment A suspension assembly is provided that includes a shock absorber having a housing filled with hydraulic fluid. An air spring is supported on the shock absorber, and the air spring includes a bladder filled with air. A valve assembly is surrounded by the fluid housin... | 04/06/2004 |
| 6655510 | Hydraulic damper An inner tube (2) connected to a vehicle body is inserted such that it is free to extend and contract in an outer tube (1) joined to a vehicle shaft. A partitioning member (3) divides an internal oil chamber at the end of the inner tube. A damping valve (... | 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 |
| 6626274 | Vibration damper having a rebound A vibration damper includes a rebound, in particular a rebound spring. The vibration damper includes a piston which is formed on an axially movable piston rod and which separates two working chambers in a cylinder, the working chamber penetrated by the pi... | 09/30/2003 |
| 6460663 | Hydraulic vibration damper for motor vehicles A hydraulic vibration damper for motor vehicles comprising a cylinder (1) containing damping fluid and a sealed, axially displaceable piston rod (2) that plunges into said cylinder. A damping piston (3) is secured to the lower end of the piston rod and di... | 10/08/2002 |
| 6450304 | 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 compres... | 09/17/2002 |
| 6422360 | Dual mode suspension damper controlled by magnetostrictive element Parallel paths for damping fluid are provided through the piston of a suspension damper, each of which are provided with separate damping valving sets to control damping. Communication through one of the paths is controlled by a movable control valve memb... | 07/23/2002 |
| 6389341 | Control system for a vehicle suspension A suspension system (20) controls the amount of compressible fluid (42) within struts (28) to determine spring rate coefficients (Ks) and dampening coefficients (Bs) for the struts (28). The spring rate and dampening coefficients (K | 05/14/2002 |
| 6374967 | Damping force control type hydraulic shock absorber A damping force control type hydraulic shock absorber capable of generating stable damping force even if the flow rate of hydraulic fluid changes sharply. Hydraulic fluid chambers at the respective ends of valve members are cut off from the downstream por... | 04/23/2002 |
| 6371262 | Damping force control type hydraulic shock absorber The flow of a hydraulic fluid, which occurs under a sliding movement of a piston in a cylinder, is directly controlled by virtue of an extension-stroke pressure control valve and a compression-stroke pressure control valve. At the same time, the pressure ... | 04/16/2002 |
| 6357564 | Connection bearing with a line connection A connection bearing with a line connection comprises an annular bearing body with a through-opening which receives a bearing pin. The connection bearing has a receiving channel for receiving a line penetrating the connection bearing. The receiving channe... | 03/19/2002 |
| 6343676 | Shock absorber mounted real time damper valve A shock absorber mounted electromagnetically operated real time damper valve which is mounted upon a piston rod and provides a flow path for fluid which bypasses the piston which separates a cylinder of the shock absorber into a pair of fluid containing c... | 02/05/2002 |
| 6332622 | Suspension apparatus having two interconnected shock absorbers The pilot suspension apparatus of the present invention is capable of biasing a damping valve in a direction for closing the valve, due to application of a pilot pressure. The suspension apparatus comprises at least one pair of hydraulic shock absorbers w... | 12/25/2001 |
| 6293377 | Variable-damping force shock absorber An actuator disposed within a piston rod of a variable-damping force shock absorber has coils mounted at an inner peripheral face of the piston rod, permanent magnets disposed facing a stator, and a cylindrical body supported rotatably about the piston ro... | 09/25/2001 |
| 6273224 | Shock absorber mounted electromagnetically operated damper valve A shock absorber mounted electromagnetically operated damper valve which is mounted upon a piston rod and provides a flow path for fluid which bypasses the piston which separates a cylinder of the shock absorber into a pair of fluid containing chambers. T... | 08/14/2001 |
| 6152271 | Shock absorber mounted electromagnetically operated damper valve A shock absorber mounted electromagnetically operated damper valve which is mounted upon a piston rod and provides a flow path for fluid which bypasses the piston which separates a cylinder of the shock absorber into a pair of fluid containing chambers. T... | 11/28/2000 |
| 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 |
| 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 |
| 5996748 | Damping force adjusting type hydraulic shock absorber A piston is slidably fitted in a cylinder for dividing the interior of the cylinder into upper and lower cylinder chambers. A reservoir is connected to the piston. A primary passage communicates between the upper cylinder chamber and the reservoir. The pr... | 12/07/1999 |
| 5975258 | Damping force control type hydraulic shock absorber A damping force control type hydraulic shock absorber of the present invention includes a cylindrical valve member. One end of the cylinder valve member is closed. Also, the shock absorber includes annular inner and outer seal portions, and a valve seat p... | 11/02/1999 |
