Liquid-sealing type vibration-isolating device

Details Liquid-sealing type vibration-isolating device Liquid-sealing type vibration-isolating device

1994-05-24

1995-08-22

Butler, Douglas C.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

267219, F16M 700, F16F 1300, B60K 512

Patent

active

054435749

ABSTRACT:
A liquid-sealing type vibration-isolating device has a primary fluid chamber and a subsidiary fluid chamber which communicate with each other through a short idle orifice and a long shock orifice, and a switch-over valve for connecting the primary and subsidiary fluid chambers with each other through the idle orifice in the low speed revolution range of an engine mounted on the device and through the long shock orifice in the medium-high speed revolution range. During the shifting of the switch-over valve, in order to prevent sudden increase in the spring constant of the device, the primary fluid is short-circuited with the subsidiary fluid chamber through a communication port, the inside of a valve member, a communication bore and an auxiliary communication passage.

REFERENCES:
patent: 4671227 (1987-06-01), Hollerweger et al.
patent: 4700933 (1987-10-01), Chikamori et al.
patent: 4789143 (1988-12-01), Smith et al.
patent: 4889326 (1989-12-01), Bouhours
patent: 5246213 (1993-09-01), Zup et al.
patent: 5310169 (1994-05-01), Kojima
patent: 5330164 (1994-07-01), Takano et al.

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