Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1987-10-02
1989-01-10
Kashnikow, Andres
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
248562, 248636, F16M 500
Patent
active
047968745
ABSTRACT:
A hydraulic mount assembly includes a pair of mounting members connected to each other through a hollow elastomeric body. The body is closed by a resilient diaphragm so as to form a cavity for damping liquid. A partition or plate is provided to divide the fluid filled cavity into two distinct chambers. A primary chamber is formed between the partition and the interior wall of the body. A secondary chamber is formed between the partition and the interior wall of the diaphragm. The partition includes at least two flow passages connecting the two chambers. A sliding gate extends across the opening to one of the passages. This gate is displaceable to direct an infinitely variable flow of liquid between the primary and secondary chambers to provide an infinitely variable damping effect. The gate is actuated by a linear solenoid providing this desired proportional operation. The other passage opening remains fully open at all times. In another embodiment, a rotary valve extends across the passage entry. In still another embodiment the solenoid is driven by a pulse width modulator. A control circuit with on board transducers is provided to monitor vehicle operating and road conditions. A microprocessor acts in response to the sensed conditions and sends a control signal to operate the linear solenoid to provide the desired damping.
REFERENCES:
patent: 3069846 (1962-12-01), Buescher
patent: 4561524 (1985-12-01), Mizumukai et al.
patent: 4635910 (1987-01-01), Ozawa et al.
patent: 4709779 (1987-12-01), Takehara
Hoying John F.
Smith Stanley E.
General Motors Corporation
Kashnikow Andres
Le Mark T.
Phillips R. L.
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