Elastic mount having fluid chamber partially defined by oscillat

Details Elastic mount having fluid chamber partially defined by oscillat Elastic mount having fluid chamber partially defined by oscillat

1992-11-23

1994-08-02

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

26714015, 29607, F16F 944, H01F 706

Patent

active

053338464

ABSTRACT:
A fluid-filled elastic mount wherein an elastic body elastically connecting a first and a second support partially defines a fluid chamber filled with a non-compressible fluid. The elastic mount includes an oscillating plate which partially defines the fluid chamber and which is displaceable to change a pressure of the fluid in the fluid chamber, and a permanent magnet disposed on one of opposite sides of the oscillating plate remote from the fluid chamber. A first and a second yoke member are connected to opposite magnetic pole faces of the magnet and cooperate with the magnet to define a closed magnetic circuit. The yoke members define therebetween an annular gap in the magnetic circuit, in which an annular moving coil is received. The coil is fixed to the oscillating plate, to oscillate the oscillating plate upon energization of the coil. Also disclosed is a method of manufacturing the elastic mount, in which a blank for the magnet is magnetized together with the yoke members after the blank and yoke members are assembled into a unit.

REFERENCES:
patent: 2306291 (1942-12-01), Alons
patent: 2952803 (1960-09-01), Charles et al.
patent: 3219889 (1965-11-01), Polushkin
patent: 4289937 (1981-09-01), Ikeda et al.
patent: 4635910 (1987-01-01), Ozawa et al.
patent: 4650170 (1987-03-01), Fakushima
patent: 4693455 (1987-09-01), Andra 267140.1

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