Fluid filled vibration damping device whose flexible layer...

Details Fluid filled vibration damping device whose flexible layer... Fluid filled vibration damping device whose flexible layer...

2007-01-30

2007-01-30

Nguyen, Xuan Lan (Department: 3683)

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

C267S141600

Reexamination Certificate

active

10769089

ABSTRACT:
A fluid filled vibration damping device including: an elastic body elastically connecting a first and a second mounting member and partially defining a pressure receiving chamber filled with a non-compressible fluid and undergoing fluid pressure variation upon application of vibrational load between the first and second mounting members; a flexible diaphragm partially defining an equilibrium chamber filled with the non-compressible fluid and whose volume is variable; and an orifice passage permitting a fluid communication between the pressure-receiving chamber and the equilibrium chamber. The flexible diaphragm is constituted by a rubber elastic layer having an annular thick-walled portion and a central thick-walled portion situated at a substantially central portion of an inner area surrounded by the annular thick-walled portion, while being independent of the annular thick-walled portion.

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