Hydraulic antivibratory devices

Details Hydraulic antivibratory devices Hydraulic antivibratory devices

1991-04-24

1992-06-23

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

2671401R, 248562, F16M 100

Patent

active

051236354

ABSTRACT:
A hydraulic antivibratory device is disclosed in which the restricted passage joining together the two chambers (A, B) comprises three portions (4, 5, 6) mounted in parallel, namely a first portion (4) whose flow section remains constant and two other portions (5, 6) whose flow sections are adjustable successively from a zero value to a maximum value by two rotary cams (9, 10) mounted on the same shift (11): the device thus provides good damping for oscillations whose frequencies increase (for example from 5 to 20 Hz) when the shaft is rotating.

REFERENCES:
patent: 4724936 (1988-02-01), Koga et al.
patent: 4763884 (1988-08-01), Matsui et al.
patent: 4822010 (1989-04-01), Thom

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