Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1989-06-12
1990-05-08
Reger, Duane A.
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
267219, F16F 500
Patent
active
049231782
ABSTRACT:
A fluid-filled cylindrical elastic mount including an inner and an outer sleeve; an elastic body interposed between the inner and outer sleeves; a rigid sleeve disposed over at least an outer circumferential surface of opposite axial end portions of the elastic body; a pressure-receiving chamber provided between the inner and outer sleeves, filled with a non-compressible fluid, and receiving a vibrational load to be damped; an equilibrium chamber provided between the inner and outer sleeves, filled with the fluid, and at least partially defined by a flexible wall; a restricted passage for restricted fluid communication between the pressure-receiving and equilibrium chambers; a recess-defining member disposed between the inner and outer sleeves, for defining a radially outwardly opening recess, the outer sleeve covering the recess to provide a space of a predetermined volume; and an elastic sleeve for fluid-tight sealing between the outer and rigid sleeves. A portion of the elastic sleeve which is aligned with the space, is spaced apart from the outer sleeve so as to provide a flexible diaphragm in the space, the flexible diaphragm serves as the flexible wall, and the equilibrium chamber is provided in the space. The rigid sleeve and the recess-defining member may be constituted by a single generally cylindrical member.
REFERENCES:
patent: 4690389 (1987-09-01), West
patent: 4749173 (1988-06-01), Kanda
patent: 4756514 (1988-07-01), Kanda
patent: 4786036 (1988-11-01), Kanda
patent: 4840357 (1989-06-01), Jouade
Funahashi Yoshiki
Matsumoto Nobuo
Shiraki Keita
Reger Duane A.
Tokai Rubber Industries Ltd.
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