Fluid-filled resilient bushing having excellent axial vibration

Details Fluid-filled resilient bushing having excellent axial vibration Fluid-filled resilient bushing having excellent axial vibration

1987-06-24

1988-07-12

Reger, Duane A.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

248562, F16F 500

Patent

active

047565144

ABSTRACT:
A fluid-filled resilient bushing including an inner sleeve, an outer sleeve with a plurality of apertures, a sealing sleeve fitted on the outer sleeve, so as to fluid-tightly close the apertures, and an annular resilient member interposed between the inner and outer sleeves so as to resiliently connect the inner and outer sleeves. The resilient member has a plurality of pockets alinged with the apertures. The bushing further includes a plurality of arcuate partition walls disposed in the pockets, respectively, and a plurality of orifice members. Each partition wall is formed as integral parts of the resilient member, so as to divide a radially inner portion of the corresponding pocket into two parts which are spaced apart from each other in an axial direction of the bushing. Each orifice member is fluid-tightly accommodated in a radially outer portion of the corresponding pocket such that the orifice member rests on the corresponding partition wall, so as to fluid-tightly close the two parts and thereby define a pair of fluid chambers which are filled with an incompressible fluid. Each orifice member is held in fluid tight relation with the sealing sleeve, and constitutes at least a part of an orifice through which the two fluid chambers communicate with each other.

REFERENCES:
patent: 3642268 (1972-02-01), Hipsher
patent: 3698703 (1972-10-01), Hipsher
patent: 4693456 (1987-09-01), Kanda

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