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Class Information
Number: 188/308
Name: Brakes > Internal-resistance motion retarder > Having a thrust member with a variable volume chamber (e.g., coaxial or telescoping tubes, compensating reservoir) > Arcuately oscillating thrust member > Causing fluid flow through hub of thrust
Description: Device wherein said shaft is provided with an orifice extending generally diametrically therethrough for passage of fluid that is moved by said member.

Sub-classes under this class:

Class Number Class Name Patents
188/309 With manually adjusted valve in hub 5

Patents under this class:

Patent Number Title Of Patent Date Issued
8469163 Rotary damper Jun. 25, 2013
8261894 Rotary damper Sep. 11, 2012
7523817 Torsional vibration damper Apr. 28, 2009
7204354 Rotary damper Apr. 17, 2007
6213881 Damper device Apr. 10, 2001
6082507 Rotary vibration damper Jul. 4, 2000
5810129 Rotary damper Sep. 22, 1998
4724936 Fluid-filled bushing with variable damping forces Feb. 16, 1988
4286621 Dual acting check valve dampener Sep. 1, 1981

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