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Class Information
Number: 188/322.22
Name: Brakes > Internal-resistance motion retarder > Thrust member or piston structure
Description: Device wherein significance is attributed to a design or construction feature of a first member that is moved in or through the fluid contained by the device.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8668061 Nested check high speed valve Mar. 11, 2014
8668063 Damping shaft mechanism Mar. 11, 2014
8590678 Nested check high speed valve Nov. 26, 2013
8590680 Shock absorber Nov. 26, 2013
8550223 Methods and apparatus for position sensitive suspension dampening Oct. 8, 2013
8544621 Shock absorber Oct. 1, 2013
8511446 Nested check high speed valve Aug. 20, 2013
8479895 Vibration damper with stroke-dependent damping force Jul. 9, 2013
8448761 Valve mechanism for a gas suspension system May. 28, 2013
8443947 Magneto-rheological fluid damper May. 21, 2013
8439173 Methods and apparatus for a suspension system with progressive resistance May. 14, 2013
8418820 Shock absorber and its hydraulic stopper Apr. 16, 2013
8413774 Shock absorber Apr. 9, 2013
8322500 Shock absorber housing Dec. 4, 2012
8297418 Nested check high speed valve Oct. 30, 2012
8245823 Vibration damper Aug. 21, 2012
8240642 Fluid damper with internal compression spring Aug. 14, 2012
8235188 Damping element Aug. 7, 2012
8172052 Rapid recovery shock absorber system with hydraulic end stop and method for use thereof May. 8, 2012
8157064 Shock absorber for drawer Apr. 17, 2012
8118285 Gas spring with integrated lead screw drive Feb. 21, 2012
8109372 Damping valve Feb. 7, 2012
8069964 Junction bleed Dec. 6, 2011
8069963 Variable resistance strut assemblies and articles containing the same Dec. 6, 2011
8028813 Shock absorber Oct. 4, 2011
8025272 Air spring and damper unit having a pilot-controlled main valve Sep. 27, 2011
8016088 Damping mechanism Sep. 13, 2011
7997395 Strut suspension Aug. 16, 2011
7950508 Piston valve assembly of continuous damping control damper May. 31, 2011
7931132 Damper Apr. 26, 2011
7921973 Adaptive energy absorption system for a vehicle seat Apr. 12, 2011
7866452 Vibration damper for vehicles Jan. 11, 2011
7815023 Drive device for opening or closing a door or similar Oct. 19, 2010
7789208 Shock absorber for achieving linear damping force characteristics Sep. 7, 2010
7757826 Damping force adjustable fluid pressure shock absorber Jul. 20, 2010
7721856 Vibration damper having an amplitude-selective damping device May. 25, 2010
7641029 Annular groove monotube piston with non-symmetrical band Jan. 5, 2010
7637128 Oil damper for drum-type washing machine Dec. 29, 2009
7637520 Motorcycle lower fork tube cover Dec. 29, 2009
7559542 Low impact gas spring Jul. 14, 2009
7549519 Free space damper Jun. 23, 2009
7493995 Shock absorber with integrated displacement sensor Feb. 24, 2009
7487957 Pneumatic spring vibration damper assembly unit Feb. 10, 2009
7451860 Shock absorber with amplitude damping Nov. 18, 2008
7367435 Shock absorber design method May. 6, 2008
7347437 Damper assembly Mar. 25, 2008
7316409 Front fork of bicycle with buffer apparatus Jan. 8, 2008
7310876 Method for making a piston body Dec. 25, 2007
7299908 Shock absorber Nov. 27, 2007
7293634 Hydraulic vehicle shock absorber Nov. 13, 2007

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