Fluid-filled elastic mount having two orifice passages one of wh

Details Fluid-filled elastic mount having two orifice passages one of wh Fluid-filled elastic mount having two orifice passages one of wh

1992-02-06

1992-12-01

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

267219, 267 6414, F16M 500

Patent

active

051674033

ABSTRACT:
A fluid-filled elastic mount is disclosed which includes a first and a second support member, an elastic body for interconnecting the support members and partially defining a pressure-receiving chamber, and a partition structure which cooperates with a first and a second flexible diaphragm to define a first and a second equilibrium chamber. The elastic mount has a first and a second orifice passage for fluid communication between the pressure-receiving chamber and the respective equilibrium chambers. The elastic mount further has an air chamber on one side of the second diaphragm remote from the second equilibrium chamber, and an operating chamber separated from the air chamber by a biasing elastic member. The operating chamber is subjected to a vacuum pressure as needed to move the second diaphragm away from the opening of the second orifice passage, which is normally closed by the second diaphragm due to a biasing force of the biasing elastic member. The elastic mount further includes a rigid planar member interposed between a top plate of the biasing elastic member and the second diaphragm. Between the rigid planar member and the top plate of the biasing elastic member is formed an air passage for permitting an air flow into a central portion of abutting faces thereof upon abutting contact therebetween.

REFERENCES:
patent: 4546960 (1985-10-01), Abrams et al.
patent: 4828234 (1989-05-01), Hoying et al.
patent: 4867263 (1989-09-01), Sugino et al.
patent: 4869477 (1989-09-01), Hoying et al.
patent: 4886251 (1989-12-01), Hausserman

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