Fluid-filled type vibration-damping device

Details Fluid-filled type vibration-damping device Fluid-filled type vibration-damping device

2008-03-18

2008-03-18

Schwartz, Christopher P. (Department: 3683)

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

Reexamination Certificate

active

11370897

ABSTRACT:
A fluid-filled type vibration-damping device having a movable rubber plate housed within a partition member partitioning a pressure-receiving chamber and an equilibrium chamber from each other. The movable rubber plate is moved owing to the pressure difference between the two chambers. The movable rubber plate comprises the movable rubber plate formed of a generally disk shaped rubber elastic body having formed thereon in alternating fashion concave grooves and convex ribs each extending in a circumferential direction about a same center axis, the convex ribs have tapered cross section gradually narrowing in width towards an distal end thereof, and the concave grooves and convex ribs are disposed at the same locations in a diametrical direction on either face of the movable rubber plate so that the thickness of the movable rubber plate is varied in the circumferential direction.

REFERENCES:
patent: 4711206 (1987-12-01), Andra et al.
patent: 4742999 (1988-05-01), Flower
patent: 6598865 (2003-07-01), Kato
patent: 6637734 (2003-10-01), Thomazeau et al.
patent: 2002/0171186 (2002-11-01), Baudendistel et al.
patent: 2003/0080483 (2003-05-01), Umemura et al.
patent: 2006/0091594 (2006-05-01), Miyahara
patent: Y2 04-033478 (1992-08-01), None

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