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Class Information
Number: 188/283
Name: Brakes > Internal-resistance motion retarder > Piston having a restrictable opening (e.g., apertured plate) in a fixed volume chamber
Description: Internal resistance motion retarder wherein restraining effort varies in accordance with the relationship between a passage for fluid medium and an element modifying the size of the passage within a cylinder having a predetermined size.










Sub-classes under this class:

Class Number Class Name Patents
188/283.1 Vortex flow passages 9


Patents under this class:

Patent Number Title Of Patent Date Issued
8573605 Active suspension system and hydraulic ram therefor Nov. 5, 2013
8556047 Automobile hydraulic shock absorber Oct. 15, 2013
8393448 Spring fork Mar. 12, 2013
8245821 Vibration damping device, particularly for hydraulic shock absorbers for vehicles Aug. 21, 2012
8109491 Vibration damper with a stop spring Feb. 7, 2012
7828525 Soft in-plane tiltrotor hub Nov. 9, 2010
7228948 Hydraulic suspension damper Jun. 12, 2007
7070028 Frequency dependent damper Jul. 4, 2006
6481546 Magneto-rheological damping valve using laminated construction Nov. 19, 2002
6220409 Stroke dependent bypass Apr. 24, 2001
5921360 Digressive damper valve Jul. 13, 1999
5842688 Arrangement for damping through wire-drawing of a fluid and suspension system in particular of an automotive vehicle fitted with such a damping arrangement Dec. 1, 1998
5398786 Fluid operated damper unit Mar. 21, 1995
5228640 Device for the elastic coupling between two parts, and aircraft with rotating wings comprising said device Jul. 20, 1993
5163706 Electro-hydraulic pressure regulating valve assembly for a hydraulic damper Nov. 17, 1992
5050849 Vibration buffer Sep. 24, 1991
4697824 Damping force control device for vehicle damper Oct. 6, 1987
4660686 Adjustable shock absorber, especially for motor vehicles Apr. 28, 1987
4529180 Thermally efficient shock absorber Jul. 16, 1985
4465299 Vehicle suspension with load-controlled damping and load-controlled damper Aug. 14, 1984
4453638 Hydraulic shock absorber Jun. 12, 1984
4445671 Gas spring including hydraulic locking means May. 1, 1984
4023657 Device for damping a perpendicularly oscillating mass May. 17, 1977











 
 
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