Vibration isolator

Details Vibration isolator Vibration isolator

1988-03-31

1989-10-31

Butler, Douglas C.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

267 35, 248562, F16F 910, F16F 1300

Patent

active

048772259

ABSTRACT:
A vibration isolator mounted on a support for a vehicle engine or the like which is a vibration source, in which a central limitational passage is formed in a partition wall which divides a fluid chamber filled with a fluid into a pair of small fluid chambers, the central limitational passage providing communication between the pair of small fluid chambers. The central limitational passage can be opened or closed by a valve capable of linearly moving so that the resistance to the fluid flowing through the central limitational passage is changed when vibrations occur. Additional connectable small limitational passages are provided in the valve and partition wall to provide communication between the small fluid chambers when the central limitational passage is closed by the valve. With this structure, vibrations can be absorbed over a wide frequency range.

REFERENCES:
patent: 4383679 (1983-05-01), Kakimoto
patent: 4660812 (1987-04-01), Dan et al.
patent: 4681306 (1987-07-01), Hofmann et al.
patent: 4709779 (1987-12-01), Takehara
patent: 4754956 (1988-07-01), Barone et al.

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