Fluid-filled elastic mount having two orifices passages one of w

Details Fluid-filled elastic mount having two orifices passages one of w Fluid-filled elastic mount having two orifices passages one of w

1992-01-31

1993-01-19

Graham, Matthew C.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

248562, F16F 1300, F16F 908

Patent

active

051801485

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 first and second equilibrium chambers, respectively. 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 flexible partition wall. The second orifice passage is disconnected from the second equilibrium chamber with its opening being closed by the second diaphragm which receives a biasing force, and communicates with the same chamber when a vacuum pressure is applied to the operating chamber to draw the second diaphragm away from the opening of the second orifice passage against the biasing force.

REFERENCES:
patent: 4546970 (1985-10-01), Abrams
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), Haussermann

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