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

1992-02-28

1994-05-24

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

248562, F16F 1300, F16F 908

Patent

active

053141733

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 an elastic restriction member which is opposed to the second diaphragm and cooperates with the diaphragm to define a vacuum-receiving chamber for allowing elastic deformation of the second diaphragm. In operation, a vacuum pressure is applied where appropriate to the vacuum-receiving chamber, to draw the second diaphragm onto the elastic restriction member, so as to restrict free deformation of the second diaphragm and permit oscillation of the diaphragm with the elastic restriction member.

REFERENCES:
patent: 4657232 (1987-04-01), West
patent: 4720087 (1988-01-01), Duclos et al.
patent: 4861006 (1989-08-01), Takano et al.
patent: 5098072 (1992-03-01), Muramatsu et al.
patent: 5145156 (1992-09-01), Muramatsu et al.
patent: 5180148 (1993-01-01), Muromatsu

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