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Class Information
Number: 188/320
Name: Brakes > Internal-resistance motion retarder > Having a thrust member with a variable volume chamber (e.g., coaxial or telescoping tubes, compensating reservoir) > Fluid through or around piston within chamber > Via fixed or variable orifice in piston > Tortuous path orifice
Description: Device wherein said opening extends in other than a straight line, whereby liquid flows through the opening in a meandering course.










Patents under this class:

Patent Number Title Of Patent Date Issued
8573605 Active suspension system and hydraulic ram therefor Nov. 5, 2013
8333270 Floating piston valve of amplitude selective shock absorber Dec. 18, 2012
7726451 Vibration damper with amplitude-selective damping force Jun. 1, 2010
6860369 Vibration damper with variable damping force Mar. 1, 2005
6533084 Gas spring device Mar. 18, 2003
6510929 Controllable magneto-rheological fluid damper Jan. 28, 2003
5855259 Viscous fluid mount Jan. 5, 1999
5823306 Stroke dependent damping Oct. 20, 1998
5816566 Viscous fluid mount Oct. 6, 1998
5810128 Shock absorber Sep. 22, 1998
5593007 Shock absorber with third fluid chamber Jan. 14, 1997
5341905 Shock absorber with variable damping force Aug. 30, 1994
5316113 Hydraulic shock absorber May. 31, 1994
5316112 Restricted passage system in vibration damping device May. 31, 1994
5305859 Liquid spring having improved damper valve structure Apr. 26, 1994
5277281 Magnetorheological fluid dampers Jan. 11, 1994
5197692 Adaptive fluid mount Mar. 30, 1993
5152379 Adjustable shock absorber assembly Oct. 6, 1992
5148897 Piston valving for shock absorbers Sep. 22, 1992
5044474 Electrically adjustable shock absorber Sep. 3, 1991
4993524 Damping valve unit for a hydraulic oscillation damper Feb. 19, 1991
4815720 Damping device with elastomeric diaphragm forming conduit wall Mar. 28, 1989
4811934 Hydraulically damped resilient mounting Mar. 14, 1989
4809828 One-way damping valve mechanism for hydraulic damper Mar. 7, 1989
4793599 Electronically controlled mounting structure for mounting power unit on vehicle Dec. 27, 1988
4787610 Vibration isolating devices Nov. 29, 1988
4775038 Spring loaded piston seal and valving component for shock absorbers, Macpherson struts and the like Oct. 4, 1988
4742999 Quiet acting fluid filled vibration isolator having predictable low level high frequency minimum dynamic stiffness May. 10, 1988
4739979 Fluid-filled resilient support structure Apr. 26, 1988
4739978 Hydraulic antivibration support Apr. 26, 1988
4733758 Tunable electrorheological fluid mount Mar. 29, 1988
4709779 Vibration damping system for power unit Dec. 1, 1987
4693456 Fluid-filled resilient bushing with circumferential orifice Sep. 15, 1987
4618128 Two-chamber engine bearing which has hydraulic damping Oct. 21, 1986
4530425 Shock absorber Jul. 23, 1985
4512447 Hydraulic damper Apr. 23, 1985
4502575 Shock absorber Mar. 5, 1985
4502366 Hydraulic recoil brake system for braking the gun barrel recoil movement after the firing traverse Mar. 5, 1985
4475635 Vortex flow shock absorber with one-way valve Oct. 9, 1984
4467899 Cylinder-piston device Aug. 28, 1984
4466514 Cylinder-piston device Aug. 21, 1984
4442925 Vortex flow hydraulic shock absorber Apr. 17, 1984
4438833 Piston for a pneumatic, hydraulic, or hydropneumatic installation Mar. 27, 1984
4424952 Metering unit Jan. 10, 1984
4407397 Shock absorber with pressure-relief mechanism Oct. 4, 1983
4197929 Device for producing damping force in hydraulic shock absorbers Apr. 15, 1980
3995720 Truck damping Dec. 7, 1976
3973654 Viscosity sensitive valve for shock absorber Aug. 10, 1976











 
 
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