Fluid-filled elastic mount having means for controlling elastic

Details Fluid-filled elastic mount having means for controlling elastic Fluid-filled elastic mount having means for controlling elastic

1991-06-20

1992-12-15

Halvosa, George E. A.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

180312, 248562, 248636, 267219, F16F 1300

Patent

active

051709988

ABSTRACT:
A fluid-filled elastic mount including a first and a second support member which are spaced apart from each other in a load-receiving direction, an elastic body for elastically connecting these support members, and a partition structure supported by the second structure. The elastic mount has a pressure-receiving chamber partially defined by the elastic body, and a first and a second equilibrium chamber partically defined by respective first and second flexible diaphragms. The elastic mount further has a member which cooperates with the first diaphragm to define a first air chamber separated from the first equilibrium chamber by the diaphragm, and a pressure control device for applying a selected one of two different pressures to the first diaphragm or the above-described member, so as to selectively permit and inhibit elastic deformation of the first flexible diaphragm. A non-compressible fluid in the mount flows between the pressure-receiving and the first equilibrium chambers through a first orifice passage, and between the pressure-receiving and the second equilibrium chambers through a second orifice passage as well as the first orifice passage.

REFERENCES:
patent: 4401298 (1983-08-01), Eaton et al.
patent: 4630808 (1986-12-01), Ushijima et al.
patent: 4657232 (1987-04-01), West
patent: 4756513 (1988-07-01), Carlson et al.
patent: 4893797 (1990-01-01), Fol et al.
patent: 4909489 (1990-03-01), Doi

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