Spring devices – Vehicle – Comprising compressible fluid
Patent
1987-03-30
1988-08-09
Kashnikow, Andres
Spring devices
Vehicle
Comprising compressible fluid
188298, 267256, 267 6426, 267 6428, 137849, F16F 904, F16F 943, F16F 500, F16K 1514
Patent
active
047623080
ABSTRACT:
An air spring for motor vehicles to absorb road shocks includes first and second axially spaced end members with an intervening flexible sleeve forming a fluid pressure chamber therebetween. An improved two-way damping valve connects the pressure chamber to a fluid reservoir and provides damping for the air spring by restricting fluid flow in one direction, either into or out of the pressure chamber, without materially effecting the fluid flow in the opposite direction. The valve includes a flexible diaphragm formed of reinforced rubber having slots which provide one or more flaps. The diaphragm preferably is mounted on a rigid annular washer having a predetermined size center opening forming a damping orifice. The flaps are drawn automatically into the washer opening to restrict the fluid flow through the orifice when the fluid moves in one direction, with the flaps moving away from the orifice to permit free movement of the fluid therethrough when the fluid is moving in an opposite direction. In another embodiment the damping valve is mounted in a strut-type fluid shock absorber combined with an air spring.
REFERENCES:
patent: 1516004 (1924-11-01), Eckrode et al.
patent: 2809825 (1957-10-01), Allinquant
patent: 3831628 (1974-08-01), Kintner
patent: 3883030 (1975-05-01), Mathews
patent: 3901272 (1975-08-01), Banners
patent: 4045009 (1977-08-01), Pees
patent: 4383679 (1983-05-01), Kakimoto
Breitkrenz Ronald
Kashnikow Andres
Oberleitner Robert J.
The Firestone Tire & Rubber & Company
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