Gas spring apparatus

Details Gas spring apparatus Gas spring apparatus

1988-06-27

1989-11-14

Oberleitner, Robert J.

Spring devices

Vehicle

Comprising compressible fluid

267 6423, 92 48, 92 98R, 188298, F16F 904

Patent

active

048802131

ABSTRACT:
In a gas spring apparatus according to the present invention, a cylinder assembly comprises a cylinder housing and a rod fitted therein for axial reciprocation. An oil chamber and a gas chamber are defined inside the cylinder assembly, and the capacity of the gas chamber changes as the cylinder housing and rod reciprocate relatively to each other. A damping force generating mechanism is provided in the cylinder assembly. A flexible bladder includes a body made of elastomer and a gas-barrier film. The film is formed on the surface of the elastomer body. The bladder divides the oil and gas chambers completely. Thus, when the rod reciprocates in the axial direction, relatively to the cylinder, the bladder inflates and deflates. The gas spring apparatus is used for a suspension system of an automobile.

REFERENCES:
patent: 3013920 (1961-12-01), Harris et al.
patent: 3140085 (1964-07-01), Carbon
patent: 3397621 (1968-08-01), Groves
patent: 3469661 (1969-09-01), Hoffmann et al.
patent: 3587789 (1971-06-01), Keuholz et al.
patent: 3955807 (1976-05-01), Takahashi et al.
patent: 4555126 (1985-11-01), Ishimitsu et al.

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