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Class Information
Number: 188/282.9
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) > Via valved orifice in thrust member > Spring-loaded valve > Adjusting the tension via (a) compressing or expanding or (b) different strength springs
Description: Spring-loaded, valved piston in which the coiled wire resiliency (a) can be varied or (b) comprises two different sizes.

Patents under this class:

Patent Number Title Of Patent Date Issued
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7886882 Pneumatic spring damper unit Feb. 15, 2011
7721856 Vibration damper having an amplitude-selective damping device May. 25, 2010
7565956 Shock absorber with a damping device Jul. 28, 2009
7159699 Adjustable shock absorber Jan. 9, 2007
7070029 Monotube piston valving system with selective bleed Jul. 4, 2006
6986414 Hydraulic shock absorber Jan. 17, 2006
6467593 Hydraulic shock absorber with progressive braking effect Oct. 22, 2002
6260832 Shock absorber with adjustable compression and rebound Jul. 17, 2001
6042091 Shock absorber Mar. 28, 2000
5579874 Adjustable speed gas spring Dec. 3, 1996
5392885 Adjustable hydraulic vibration damper for motor vehicles Feb. 28, 1995
5186074 Bicycle handlebar shock absorber Feb. 16, 1993
5168965 Bypass valve with selective characteristics for controlled and adjustable dashpots Dec. 8, 1992
5137125 Pressure-actuated valve Aug. 11, 1992
4872537 Adjustable damper means for shock absorber Oct. 10, 1989
4784375 Steplessly blockable setting device Nov. 15, 1988
4747475 Suspension wear compensating shock absorber May. 31, 1988
4624346 Multi-ratio hydraulic energy dissipater Nov. 25, 1986
4596270 Bi-directional flow control device Jun. 24, 1986
4474271 Shock absorber unit Oct. 2, 1984
4453638 Hydraulic shock absorber Jun. 12, 1984
4423800 Shock absorber with improved compression valve mechanism Jan. 3, 1984
4396098 Force-responsive shock absorbing apparatus Aug. 2, 1983
4337850 Hydraulic damper Jul. 6, 1982
4203507 Shock absorber May. 20, 1980
4128149 Piston arrangement for a shock absorber Dec. 5, 1978
4040523 Railway car cushioning device Aug. 9, 1977
4036335 Adjustable shock absorber Jul. 19, 1977
3981380 Shock absorber for motor vehicle Sep. 21, 1976
3948499 Impact absorption devices and valve structure Apr. 6, 1976

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