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Class Information
Number: 267/124
Name: Spring devices > Fluid > Expansible-contractible chamber device > Piston
Description: Spring device in which the side wall structure defines a cylinder and the displaceable wall is a rigid member movable along and in substantially sealing proximity to said wall structure interior.


Sub-classes under this class:

Class Number Class Name Patents
267/125 For use in well drilling or operating 48
267/128 Rigid-material-spring impelled 2
267/129 Seal 23
267/126 System 30


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
7455154 Shock absorber Nov. 25, 2008
7401769 Gas spring Jul. 22, 2008
7353922 Air damper Apr. 8, 2008
7281704 Damping apparatus for moving furniture parts Oct. 16, 2007
7278632 Gas spring Oct. 9, 2007
7182323 Arrangement with a height-adjustable component Feb. 27, 2007
7140601 Independent and integrated compact air-bump stops Nov. 28, 2006
7017928 Bicycle Mar. 28, 2006
7011192 Air cylinder with high frequency shock absorber and accelerator Mar. 14, 2006
6988600 High frequency dampening apparatus Jan. 24, 2006
6945372 High frequency shock absorber and accelerator Sep. 20, 2005
6899206 Air cylinder with high frequency shock absorber and accelerator May. 31, 2005
6705201 Activation device for a piston/cylinder unit Mar. 16, 2004
6688626 Bicycle Feb. 10, 2004
6612410 High frequency shock absorber and accelerator Sep. 2, 2003
6578832 Air damper used in glove box of automobile Jun. 17, 2003
6564976 Visco elastic displacement controller May. 20, 2003
6460839 Air damper for a movably supported structural part, in particular in automobiles Oct. 8, 2002
6454061 High frequency shock absorber and accelerator Sep. 24, 2002
6352271 Cylinder for improving the handling of a vehicle in turns Mar. 5, 2002
6199837 Thermoplastic elastomer air spring Mar. 13, 2001
6170806 Piston/cylinder assembly Jan. 9, 2001
6086059 Gas spring device Jul. 11, 2000
6056277 Air spring arrangement May. 2, 2000
6032974 Device for retaining a boot on a gliding board adapted for snowboarding Mar. 7, 2000
6024343 Air spring for air spring axles Feb. 15, 2000
5964454 Piston cylinder unit with a piston having tolerance compensation Oct. 12, 1999
5915674 Adjustable-length gas spring Jun. 29, 1999
5887857 Gas spring Mar. 30, 1999
5775677 Air or gas sprung and dampened shock absorber Jul. 7, 1998
5728174 Swing phase control for an artificial knee joint Mar. 17, 1998
5722643 Temperature compensated safety gas spring Mar. 3, 1998
5702091 Gas spring Dec. 30, 1997
5628496 Pneumatic spring May. 13, 1997
5545233 Swing phase control device Aug. 13, 1996
5197718 Self-contained gas springs interchangeable with coil springs Mar. 30, 1993
5137124 Pressure tube piston unit Aug. 11, 1992
5106065 Self-blocking gas spring with temperature-responsive bypass valve Apr. 21, 1992
4949941 Longitudinally controllable adjustment device Aug. 21, 1990
4909488 Gas spring having a plurality of pressure chambers arranged one behind another Mar. 20, 1990
4877115 Piston for a piston-cylinder unit Oct. 31, 1989
4852862 Fluid-filled piston-cylinder unit Aug. 1, 1989
4832318 Lifting telescoping tube May. 23, 1989
4793600 Vibration isolating apparatus Dec. 27, 1988
4779845 Gas spring for motor vehicle with retaining drive for preventing piston rod return toward its operational, outermost position after accident Oct. 25, 1988
4770269 Closed air system seismic wave generator Sep. 13, 1988
4760768 Mechanism for suppressing bound of swingable elements on a key musical instrument Aug. 2, 1988
4736824 Pneumatic spring Apr. 12, 1988
4726571 Height control valve with spring return actuator Feb. 23, 1988
4718647 Pneumatic counterbalance with dual force Jan. 12, 1988

1 2


 
 
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