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Class Information
Number: 188/281
Name: Brakes > Internal-resistance motion retarder > Resistance alters relative to direction of thrust member (e.g., high resistance in one direction, low in the other)
Description: Internal-resistance motion retarder wherein the restraining effort is responsive to the path of movement of a piston (first member), within a fluid, with respect to a chamber or cylinder.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7523818 |
Vibration damper with amplitude-selective damping force |
Apr. 28, 2009 |
| 7438164 |
Solenoid actuated continuously variable servo valve for adjusting damping in shock absorbers and struts |
Oct. 21, 2008 |
| 7320388 |
Stroke dependent damping |
Jan. 22, 2008 |
| 7293634 |
Hydraulic vehicle shock absorber |
Nov. 13, 2007 |
| 6981578 |
Non-pressurized monotube shock absorber |
Jan. 3, 2006 |
| 6427986 |
Air suspension apparatus |
Aug. 6, 2002 |
| 6412614 |
Downhole shock absorber |
Jul. 2, 2002 |
| 6412606 |
Damper/positioning structure |
Jul. 2, 2002 |
| 6412615 |
Hydraulic shock absorber for motor vehicles |
Jul. 2, 2002 |
| 6390257 |
Suspension damper having piston plate with coined, continuously curved bypass |
May. 21, 2002 |
| 6390457 |
Soft-start, soft-return gas spring |
May. 21, 2002 |
| 6382373 |
Frequency dependant damper |
May. 7, 2002 |
| 6374966 |
Shock absorber assembly |
Apr. 23, 2002 |
| 6360857 |
Damping adjuster for shock absorber |
Mar. 26, 2002 |
| 6352145 |
Stroke dependent damping |
Mar. 5, 2002 |
| 6298959 |
Motion-damping arrangement, in particular for motor vehicles |
Oct. 9, 2001 |
| 6206152 |
Vibration damper with variable damping force |
Mar. 27, 2001 |
| 6182575 |
Adjustable stop-wagon retarders with locking function for wagons at high speed and disposal methods thereof |
Feb. 6, 2001 |
| 6129343 |
Gas spring with speed regulation |
Oct. 10, 2000 |
| 5957252 |
Hydraulic suspension unit |
Sep. 28, 1999 |
| 5927448 |
Shock absorber |
Jul. 27, 1999 |
| 5890568 |
Continuously variable twin-tube shock damper |
Apr. 6, 1999 |
| 5845749 |
Linear motion absorber with synthetic components |
Dec. 8, 1998 |
| 5781873 |
Apparatus and method for controlling damping force characteristic of vehicular suspension system |
Jul. 14, 1998 |
| 5458218 |
Suspension system for motor vehicles as well as damping valve for said suspension system |
Oct. 17, 1995 |
| 5454451 |
Process for controlling vibration damping force in a vibration damping device |
Oct. 3, 1995 |
| 5363945 |
Control valve for shock absorbers |
Nov. 15, 1994 |
| 5328004 |
Bypass valve assembly for a hydraulic damper |
Jul. 12, 1994 |
| 5257680 |
Surface effect dampers having both hysteresis and a frictional component |
Nov. 2, 1993 |
| 5249652 |
Two stage damping shock absorber |
Oct. 5, 1993 |
| 5230407 |
Linkage rod with shock absorbing |
Jul. 27, 1993 |
| 5211268 |
Control valve for shock absorbers |
May. 18, 1993 |
| 5184702 |
Hydraulic damper |
Feb. 9, 1993 |
| 5133435 |
Adjustable dry friction shock absorber |
Jul. 28, 1992 |
| 4955460 |
Control valve for shock absorbers |
Sep. 11, 1990 |
| 4948103 |
Spring-loaded dampening actuator |
Aug. 14, 1990 |
| 4938324 |
Automatic derailleur shifter |
Jul. 3, 1990 |
| 4915363 |
Impact damper |
Apr. 10, 1990 |
| 4858735 |
Stationary pivot mechanism for use with a damper |
Aug. 22, 1989 |
| 4834088 |
Shock absorber for vehicles with pneumatic suspension, more especially for heavy vehicles |
May. 30, 1989 |
| 4817766 |
Arrangements for damping shifting movements in transmissions |
Apr. 4, 1989 |
| 4785922 |
Gun recoil mechanism |
Nov. 22, 1988 |
| 4703838 |
Recoil damper for a reciprocating member |
Nov. 3, 1987 |
| 4651979 |
Temperature-compensated gas spring |
Mar. 24, 1987 |
| 4647026 |
Pneumatic or hydropneumatic tension spring |
Mar. 3, 1987 |
| 4623049 |
Dual mode shock absorber and method |
Nov. 18, 1986 |
| 4583621 |
Differentiated action oscillation damping device |
Apr. 22, 1986 |
| 4515845 |
Pile damper mechanism |
May. 7, 1985 |
| 4443926 |
Method of assembling shock absorbers |
Apr. 24, 1984 |
| 4383595 |
Gas spring having three different damping-rate stages |
May. 17, 1983 |
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