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

1992-12-03

1994-09-06

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

310256, F16M 500

Patent

active

053441290

ABSTRACT:
A fluid-filled elastic mount including an elastic body elastically connecting a first and a second support, and partially defining 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 by a plastic material, 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 a magnetic fluid and an annular moving coil are received. The magnetic fluid includes magnetic particles dispersed in a liquid medium. The coil is fixed to the oscillating plate, to oscillate the oscillating plate upon energization of the coil.

REFERENCES:
patent: 3750067 (1973-07-01), Fletcher et al.
patent: 4414437 (1983-11-01), Trauernicht et al.
patent: 4505461 (1985-03-01), Kakimoto
patent: 4624435 (1986-11-01), Freudenberg
patent: 4635910 (1987-01-01), Ozawa et al.
patent: 4638983 (1987-01-01), Idigkeit et al.
patent: 4650170 (1987-03-01), Fukushima
patent: 4693455 (1987-09-01), Andra
patent: 4869474 (1989-09-01), Best et al.

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