Hydropneumatic spring

Details Hydropneumatic spring Hydropneumatic spring

1974-10-21

1976-03-30

Marbert, James B.

Spring devices

Vehicle

Comprising compressible fluid

F16F 500

Patent

active

039470032

ABSTRACT:
This invention relates to a hydropneumatic spring device comprising an outer cylindrical casing and an inner cylindrical casing both having closure means at each end. The inner cylindrical casing is positioned in said outer casing and is transversely spaced therefrom to define an elongated annular chamber. A piston slidably mounted in said inner casing has a piston rod extending axially from one end thereof through an axial bore in one of said closure means. A resilient sleeve encompassing the inner casing is positioned in the annular chamber extending substantially the length thereof. The ends of the sleeve are retained in fixed position so that a variable volume gas chamber is defined between the outer casing and the sleeve and a variable volume liquid chamber is defined between the inner casing and the sleeve. The gas chamber is adapted to be charged with gas under pressure and the portion of the inner casing between the piston and the other closure means is adapted to be charged with liquid. A passageway is provided through the inner casing for flow of such liquid into the liquid chamber.

REFERENCES:
patent: 2850276 (1958-09-01), Jackson
patent: 3819166 (1974-06-01), Ellis et al.

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