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Class Information
Number: 188/322.18
Name: Brakes > Internal-resistance motion retarder > Including seal or guide > Between piston and cylinder
Description: Device wherein the container includes a cylindrical chamber, the first member is a piston which reciprocates within the chamber, the component located at and functioning between the interface of the piston and the chamber.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8657085 Air damper Feb. 25, 2014
8528708 Air damper Sep. 10, 2013
8485325 Stop damper Jul. 16, 2013
8453807 Hydraulic damper device for retarding movement of a movable member toward a stationary member Jun. 4, 2013
8424657 Cylinder assembly Apr. 23, 2013
8342304 Pneumatic retarding device Jan. 1, 2013
8146720 Shock absorber for a transportation means Apr. 3, 2012
8109491 Vibration damper with a stop spring Feb. 7, 2012
7637128 Oil damper for drum-type washing machine Dec. 29, 2009
7621382 Shock absorber Nov. 24, 2009
7428954 Damper for drum type washing machine Sep. 30, 2008
7367086 String type air damper May. 6, 2008
7204104 Damper of drum type washing machine Apr. 17, 2007
7182190 Vibration damper with fire safety device Feb. 27, 2007
7104369 Vibration damper with stroke-dependent damping force Sep. 12, 2006
7083164 Cushion and cushion cylinder for ram or bolster of a press Aug. 1, 2006
6971303 Method and device at a piston-cylinder device Dec. 6, 2005
6928923 Piston with supporting connector elements for a piston-cylinder arrangement, in particular a shock absorber piston Aug. 16, 2005
6726219 Air damper with graphite coated lip seal Apr. 27, 2004
6712362 Primary seals for master-slave cylinder systems Mar. 30, 2004
6695294 Controlled equilibrium device with displacement dependent spring rates and integral damping Feb. 24, 2004
6591948 Piston with support webs for a piston-cylinder arrangement, in particular a shock absorber piston Jul. 15, 2003
6547046 Hydraulic damper Apr. 15, 2003
6513811 Air damper with graphite coated lip seal Feb. 4, 2003
6481336 Piston with pressure-dependent sealing effect for a piston-cylinder arrangement, in particular a shock absorber piston Nov. 19, 2002
6460839 Air damper for a movably supported structural part, in particular in automobiles Oct. 8, 2002
6397987 Dashpot piston in halves Jun. 4, 2002
6311813 Axially movable switching sealing ring within a groove Nov. 6, 2001
6199673 Silent damper with anti-rattle shaft Mar. 13, 2001
6176492 Piston ring for shock absorber Jan. 23, 2001
6164659 Piston rod seal Dec. 26, 2000
5988608 Piston-cylinder unit having a sealing valve Nov. 23, 1999
5884734 Air damper Mar. 23, 1999
5860497 Hydraulic shock absorber with removable components Jan. 19, 1999
5839551 Piston and piston-rod guide unit for hydraulic shock absorbers Nov. 24, 1998
5806840 Fluid-filled unit of a cylinder and a piston rod, in particular gas spring Sep. 15, 1998
5730263 Vibration damper Mar. 24, 1998
5697477 Air damper Dec. 16, 1997
5655634 Shock absorbers and vibration dampers; and shock absorbers and vibration dampers with a piston with a piston ring; and a cyclinder with a piston with a piston ring Aug. 12, 1997
5647578 Latch mechanism Jul. 15, 1997
5615756 Shock absorber for a motor vehicle, which shock absorber has a piston valve Apr. 1, 1997
5570761 Velocity responsive fluid actuated friction damper Nov. 5, 1996
5518223 Air damper assembly with piston seal and piston rod latch May. 21, 1996
5353689 Impact damping means for power cylinders Oct. 11, 1994
5339932 Apparatus and method to cushion movement of a member Aug. 23, 1994
5301716 Closure damper for a sanitary water fitting Apr. 12, 1994
5188345 Lockable elevating mechanism for the continuous adjustment of chair seats Feb. 23, 1993
5174551 Cylinder piston device Dec. 29, 1992
5172793 Vehicle brake with brake cylinder bore insert Dec. 22, 1992
5115892 Hydraulic shock absorber with piston seal structure for enhancement of initial response May. 26, 1992

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