Fluid-filled elastic mount having vacuum-receiving chamber and a

Details Fluid-filled elastic mount having vacuum-receiving chamber and a Fluid-filled elastic mount having vacuum-receiving chamber and a

1992-07-28

1993-09-21

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

267219, 180312, 248562, 248636, F16F 1300

Patent

active

052462129

ABSTRACT:
A fluid-filled elastic mount including first and second support members and an elastic body interposed between these support members for elastically 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, and a vacuum-receiving chamber which is separated by the second diaphragm from the second equilibrium chamber. In operation, the vacuum-receiving chamber is selectively subjected to a sub-atmospheric pressure or exposed to the atmosphere to control the elastic deformation of the second diaphragm. The elastic mount further has an auxiliary air chamber which cooperates with the vacuum-receiving chamber to accommodate a volumetric change of the second equilibrium chamber when the vacuum-receiving chamber is exposed to the atmosphere.

REFERENCES:
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patent: 5170998 (1992-12-01), Muramatsu
Patents Abstracts of Japan, vol. 15 No. 329 (M-1149) Aug. 21, 1991 JP-A-3-125045 (Toyo Tire & Rubber Co Ltd).
Patent Abstracts of Japan, vol. 11 No. 135 (M-585) (2582) Apr. 28, 1987 JP-A-61-274 132 (Toyoda Gosei Co Ltd).

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