Vibration isolation apparatus

Details Vibration isolation apparatus Vibration isolation apparatus

1992-03-11

1994-09-06

Butler, Douglas C.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

267219, F16M 100, F16F 500

Patent

active

053441265

ABSTRACT:
A vibration isolation apparatus comprises an outer cylinder, an inner cylinder, an elastic member disposed between the outer and inner cylinders and deforming when vibration is generated, a main fluid chamber able to expand and contract according to deformation of the elastic member, an auxiliary fluid chamber able to expand and contract according to deformation of a membrane, and a restricted path communicating between the main and auxiliary fluid chambers. The main and auxiliary fluid chambers are communicated with each other around the inner cylinder. The restricted path is disposed at sides in the axial direction of main and auxiliary fluid chambers. Therefore, the restricted paths can be connected to the main and auxiliary fluid chambers at the positions where the fluid chambers are separated farthest from each other. As a result, the restricted paths can be extended.

REFERENCES:
patent: 4884789 (1989-12-01), Takeda et al.
patent: 4893798 (1990-01-01), Hibi et al.
patent: 4923178 (1990-05-01), Matsumoto et al.
patent: 5098072 (1992-03-01), Muramatsu et al.

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