Fluid-filled resilient bushing with circumferential orifice

Details Fluid-filled resilient bushing with circumferential orifice Fluid-filled resilient bushing with circumferential orifice

1986-09-11

1987-09-15

Reger, Duane A.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

188320, F16F 500

Patent

active

046934561

ABSTRACT:
A fluid-filled resilient bushing including an inner sleeve, a rubber insert secured to the outer surface of the inner sleeve, an orifice sleeve fitted on the rubber insert, and an outer sleeve fitted on the orifice sleeve. The rubber insert has a plurality of circumferentially spaced-apart pockets which are closed by the orifice sleeve, whereby a plurality of fluid chambers are formed. The orifice sleeve has a circumferential groove formed continuously in its outer surface so as to cover at least one full circumference of the orifice sleeve, and a plurality of radial holes which communicate at their outer ends with the circumferential groove and at their inner ends with the fluid chambers, respectively. The outer sleeve closes the circumferential groove in the orifice sleeve, so as to define a continuous circumferential orifice which communicates with the fluid chambers through the radial holes in the orifice sleeve.

REFERENCES:
patent: 4277056 (1981-07-01), Ticks
patent: 4377216 (1983-03-01), Veno
patent: 4605207 (1986-08-01), Konishi

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