Hydraulic antivibration devices

Details Hydraulic antivibration devices Hydraulic antivibration devices

1994-02-14

1995-05-02

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

18832213, 248562, 248636, F16F 934

Patent

active

054112435

ABSTRACT:
A hydraulic antivibration device comprises, between its two chambers, two passages (8, 10) connected in parallel, and it also comprises a rotary shutter (11) having the same axis (X) as the device and suitable for opening or closing, at will, at least one of the two passages and also slots that put the chambers into communication with a decoupling shutter member. Angular displacement of the shutter is controlled by successively exciting two small antagonistic electromagnets (14, 15) housed in the outer portion of the intermediate partition (7) and suitable for attracting a ferromagnetic armature (16) of the shutter member, which armature is urged towards an intermediate position by a small spring (17).

REFERENCES:
patent: 2950088 (1960-08-01), Scott
patent: 4648576 (1987-03-01), Matsui
patent: 4699099 (1987-10-01), Arai et al.
patent: 4789143 (1988-12-01), Smith et al.
patent: 4869478 (1989-09-01), Bouhours et al.
patent: 5031884 (1991-07-01), Baudrit et al.
patent: 5165668 (1992-11-01), Gennesseaux
patent: 5246213 (1993-09-01), Zup et al.
Patent Abstracts of Japan, vol. 6, No. 32, 26 Feb. 1982 & JP-A-56150806 21 Nov. 1981.

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