Electrorheological anti-vibration bush

Details Electrorheological anti-vibration bush Electrorheological anti-vibration bush

1990-08-28

1991-09-24

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

188267, F16F 700

Patent

active

050508504

ABSTRACT:
An anti-vibration bush comprises: an outer casing adapted to be mounted on either a vibration generating member or a vibration receiving member; a shaft disposed in the outer casing and adapted to be mounted on the other member; and an elastic member disposed between the outer casing and the shaft and having a plurality of small liquid chambers filled with electrorheologic fluid. Electrodes for electrically activating the electrorheologic fluid are provided in a restricted path which permits the small liquid chambers to be in communication with each other. The electrical activation of the electrodes causes the fluid's viscosity to vary, so that the resistance to flow of the fluid passing through the restricted path is changed.

REFERENCES:
patent: 2886151 (1959-05-01), Winslow
patent: 3047507 (1962-07-01), Winslow
patent: 4630806 (1986-12-01), Dan et al.
patent: 4630808 (1986-12-01), Ushijima et al.
patent: 4702346 (1987-10-01), Uno et al.
patent: 4733758 (1988-03-01), Duclos et al.

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