Hydraulic antivibratory devices

Details Hydraulic antivibratory devices Hydraulic antivibratory devices

1990-07-19

1991-10-29

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

F16F 1504

Patent

active

050609173

ABSTRACT:
An improved hydraulic antivibratory device is disclosed intended to be inserted for damping and connection purposes between two rigid elements, comprising an annular frame (1) and a rigid hub (2), fixed respectively to the two rigid elements, a frustroconical elastomer spring (3) interposed between the frame and the hub, a flexible and sealed membrane (4) carried by the frame, a rigid intermediate wall (5) defining two chambers (A, B), a restricted passage (6) causing the two chambers to communicate permanently together and a liquid (L) contained in the two chambers and in the restricted passage. The hub comprises a shoe (11) which is too large to pass through a washer (8) of the frame and this shoe is connected to an annular zone of the intermediate dividing wall by a sealed bellows (12).

REFERENCES:
patent: 3669225 (1972-06-01), Moulton et al.
patent: 4199128 (1980-04-01), van den Boom et al.
patent: 4378935 (1983-04-01), Brown et al.
patent: 4657227 (1987-04-01), Hofmann
patent: 4660813 (1987-04-01), Reuter
patent: 4757982 (1988-07-01), Andra et al.
patent: 4770396 (1988-09-01), Jouade
patent: 4869478 (1989-09-01), Bouhours et al.

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