Rubber bushing that suppresses vibrations hydraulically

Details Rubber bushing that suppresses vibrations hydraulically Rubber bushing that suppresses vibrations hydraulically

1991-11-13

1993-01-12

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

267219, 2671412, F16M 100

Patent

active

051783754

ABSTRACT:
A rubber bushing that suppresses vibrations hydraulically, having a central longitudinal axis and being preponderantly subjected to loads in a direction perpendicular to its axis. The bushing comprises two axially coincident supporting sleeves arranged one inside the other and a rubber resilient element retained between the sleeves. The resilient element forms at least two essentially radially projecting webs having metal contact elements on the outer surfaces that rest against the inner surface of the outer supporting sleeve. The webs demarcate, in conjuction with the walls at each end of the sleeve and with the outer supporting sleeve, at least two working chambers that are full of fluid and communicate through connecting channels. The webs are resiliently compressed to less than their nominal size between the two retaining supporting sleeves. The ends of the webs are outwardly secured in the vicinity of the walls to mechanical rings demarcating, in conjuction with the outer supporting sleeve, annular channels that constitute part of the connecting channels. The annular channels, extending around each end of the resilient element, terminate at and conduct fluid into a working chamber inside the element. The annular channels communicate and conduct fluid through a straight channel that essentially parallels the longitudinal axis of the resilient element, diverges from axial to radial and opens into the annular channels at each end.

REFERENCES:
patent: 4700934 (1987-10-01), Andia et al.
patent: 4768760 (1988-09-01), LeFol
patent: 4822010 (1989-04-01), Thom
patent: 4840359 (1989-06-01), Hamaekevs et al.
patent: 4895353 (1990-01-01), Roth et al.
patent: 4982938 (1991-01-01), Brenner

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