Fluid-sealed vibration isolating device

Supports – Resilient support – Including additional energy absorbing means – e.g. – fluid or...

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2671401, F16M 1300

Patent

active

058878440

ABSTRACT:
A fluid-sealed vibration isolating device comprises primary and secondary damping-fluid chambers, a fluid-flow restrictive plate or diaphragm for dividing the primary damping-fluid chamber into first and second main chambers and being responsive to an amplitude of input vibration for restricting a flow of damping fluid between the first and second main chambers when the amplitude of input vibration is greater than a predetermined amplitude, the secondary damping-fluid chamber including first and second sub-chambers, and first, second and third orifice passageways for defining respective flow restrictive passages between the first main chamber and the first sub-chamber, between the second main chamber and the first sub-chamber, and between the second main chamber and the second sub-chamber. The fluid-flow restrictive plate or diaphragm associated with the second and third orifice passageways for creating at least three resonant vibration systems required to damp three different input vibrations including engine shake, idling vibration, and high-frequency vibrations.

REFERENCES:
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patent: 4708329 (1987-11-01), Tabata et al.
patent: 4895353 (1990-01-01), Roth et al.
patent: 5040774 (1991-08-01), Veverka et al.
patent: 5188346 (1993-02-01), Hamada et al.
patent: 5213313 (1993-05-01), Tsutsumida et al.
patent: 5333847 (1994-08-01), Kanda
patent: 5547173 (1996-08-01), Tsutsumida et al.

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