Hydraulic antivibratory sleeves

Details Hydraulic antivibratory sleeves Hydraulic antivibratory sleeves

1991-03-14

1992-12-22

Halvosa, George E. A.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

180312, 248562, 248636, 267219, 26714011, 26714013, F16F 1300

Patent

active

051728931

ABSTRACT:
A hydraulic antivibratory sleeve comprises, on the the one hand, two rigid tubular frames (1, 2) with an axis X, one surrounding the other, joined together by an elastomer body (3) shaped so as to form therewith at least two sealed pockets (A, B) diametrically opposite in a direction Y perpendicular to axis X and communicating together through an narrow channel (4). The assembly formed by these pockets and the channel is filled with liquid. The sleeve includes, on the other hand, at one of its axial ends, an annular work-chamber (C) defined partially by a resilient wall (7) resisting axial compression. This sleeve further comprises at its other axial end an annular compensation chamber (D) defined partially by a flexible membrane (12), a narrow channel (13) connecting the two annular chambers directly together and the assembly formed by the channel and the two chambers being filled with liquid.

REFERENCES:
patent: 4721291 (1988-01-01), Makibayashi et al.
patent: 4763884 (1988-08-01), Matsui et al.
patent: 4840357 (1989-06-01), Jouade

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