Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1988-09-26
1989-05-09
Kashnikow, Andres
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
267 6428, 267219, 248550, F16M 500, B60G 1504
Patent
active
048282340
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 hydraulic damping fluid. A partition or plate is provided to divide the fluid filled cavity into two distinct chambers and the partition may include a decoupler. A primary chamber is formed between the partition and the interior wall of the hollow body. An expandable pneumatic bladder is mounted within the primary chamber. A secondary chamber is formed between the partition and the interior wall of the diaphragm. A pumping chamber is formed by the diaphragm and a sealed base plate. Hydraulic fluid passes through the orifice track between the two chambers providing the damping action. As the fluid enters the secondary chamber, the diaphragm expands. Expansion/contraction of the diaphragm within the sealed pumping chamber creates a supply of positive
egative pressure air. A control circuit governs flow of air between the pump and the pneumatic bladder, thereby selectively modulating the overall damping and dynamic rate characteristics in response to sensed vehicle operating conditions.
REFERENCES:
patent: 4342446 (1982-08-01), Eaton et al.
patent: 4415148 (1983-11-01), Mair et al.
patent: 4558173 (1985-12-01), Gajajiva et al.
patent: 4613118 (1986-09-01), Morita
patent: 4666016 (1987-05-01), Abe et al.
patent: 4712777 (1987-12-01), Miller
patent: 4720084 (1988-01-01), Hollerweger et al.
patent: 4756513 (1988-07-01), Carlson et al.
Hoying John F.
Smith Stanley E.
General Motors Corporation
Graham Matthew C.
Kashnikow Andres
Phillips Ronald L.
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