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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:

Class Number Class Name Patents
188/282.1 Via valved orifice in thrust member 114


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8657086 Rotary damper mounting assembly and rotary damper apparatus Feb. 25, 2014
8627932 Bypass for a suspension damper Jan. 14, 2014
8528708 Air damper Sep. 10, 2013
8474802 Vibration isolator Jul. 2, 2013
8448759 Single cylinder type hydraulic shock absorber for vehicle May. 28, 2013
8397929 Integral buffering apparatus for automatically controlling flow rate of fluid and flat rack container including the integral buffering apparatus Mar. 19, 2013
8382076 Object-support column Feb. 26, 2013
8342301 Shock absorber Jan. 1, 2013
8322500 Shock absorber housing Dec. 4, 2012
8307965 Vibration damper with adjustable damping force Nov. 13, 2012
8302746 Hydraulic shock absorber Nov. 6, 2012
8282086 Vibration isolator Oct. 9, 2012
8256587 Shock absorber Sep. 4, 2012
8246019 Air spring for vehicle closure Aug. 21, 2012
8181756 Shock absorber May. 22, 2012
8167101 Damping force generating mechanism for shock absorber May. 1, 2012
8151952 Proportional control valve Apr. 10, 2012
8118144 Hydraulic dampers with pressure regulated control valve Feb. 21, 2012
7788011 Braking and drive force control apparatus for a vehicle Aug. 31, 2010
7748506 Bicycle damping enhancement system Jul. 6, 2010
7740263 Front wheel supporting structure Jun. 22, 2010
7690667 Bicycle damping enhancement system Apr. 6, 2010
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
6412615 Hydraulic shock absorber for motor vehicles Jul. 2, 2002
6412606 Damper/positioning structure 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

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