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Class Information
Number: 188/282.7
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 > Ball-type valve
Description: Valved piston in which the size varying element is a sphere, usually solid.










Patents under this class:

Patent Number Title Of Patent Date Issued
8123005 End-stop damper Feb. 28, 2012
8104591 Magnetic valve for shock absorbers Jan. 31, 2012
7878311 Piston with an integral electrically operated adjustment valve for a hydraulic vibration damper Feb. 1, 2011
7565956 Shock absorber with a damping device Jul. 28, 2009
7455154 Shock absorber Nov. 25, 2008
7007588 Device for adjusting the pressure in a hydraulic jack Mar. 7, 2006
6691842 Shock absorber for a radio control model Feb. 17, 2004
6659239 Shock absorber through the rod damping adjustment Dec. 9, 2003
6254067 Fluid regulating device for use with a hydraulic cylinder to obtain a variable shock absorbing effect Jul. 3, 2001
6202807 Speed controlling hydraulic dampener Mar. 20, 2001
6182575 Adjustable stop-wagon retarders with locking function for wagons at high speed and disposal methods thereof Feb. 6, 2001
5653425 Energy absorbers Aug. 5, 1997
5522482 Suspension control system Jun. 4, 1996
5026248 Hydrodynamic swing damper and tree handling vehicle incorporating the same Jun. 25, 1991
4874066 Variable flow shock absorber and method Oct. 17, 1989
4832318 Lifting telescoping tube May. 23, 1989
4588054 Linear motion damper May. 13, 1986
4545769 Tilt locking system for boat propellers Oct. 8, 1985
4475635 Vortex flow shock absorber with one-way valve Oct. 9, 1984
4445673 Shock absorber and air spring assembly May. 1, 1984
4419083 Tilt lever returning mechanism for outboard engine Dec. 6, 1983
4271938 Hydraulic shock absorbing arrangement for pipe conduit systems Jun. 9, 1981
4190239 Shock absorber assembly and installation Feb. 26, 1980
4185356 Door closer Jan. 29, 1980
3939947 Dashpot for either push or pull damping Feb. 24, 1976











 
 
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