Fluid-filled elastic mount having vacuum-receiving chamber parti

Details Fluid-filled elastic mount having vacuum-receiving chamber parti Fluid-filled elastic mount having vacuum-receiving chamber parti

1992-03-04

1993-06-08

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

267219, 248562, 248636, F16F 1300

Patent

active

052172112

ABSTRACT:
A fluid-filled elastic mount including first and second support members and an elastic body interposed between these members for elastic connection thereof. The elastic mount has a pressure-receiving chamber partially defined by the elastic body, first and second equilibrium chambers defined by first and second flexible diaphragms and communicating with the pressure-receiving chamber through first and second orifice passages, respectively. The second orifice passage has a higher ratio of the cross sectional area to the length than the first orifice passage. The present elastic mount further includes a pressure control device for selectively applying a vacuum pressure to a vacuum-receiving chamber which lies behind the second equilibrium chamber via the second diaphragm, to thereby restrict elastic deformation of the second diaphragm. A rigid restriction member is secured to a part of the second diaphragm which is opposed to an opening of an air passage through which the vacuum pressure is applied to the vacuum-receiving chamber.

REFERENCES:
patent: 4641817 (1987-02-01), Clark et al.
patent: 4657232 (1987-04-01), West
patent: 4711206 (1987-12-01), Andra et al.
patent: 4828234 (1989-06-01), Hoying et al.
patent: 4869477 (1989-09-01), Hoying et al.
patent: 5114124 (1992-05-01), Muramatsu

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