Oil and air suspension devices

Details Oil and air suspension devices Oil and air suspension devices

1975-03-13

1976-07-20

Marbert, James B.

Spring devices

Vehicle

Comprising compressible fluid

188286, 188315, F16F 500

Patent

active

039702928

ABSTRACT:
The invention relates to an air and oil suspension device notably for motor vehicles adapted to act both as a shock absorber and as a pneumatic spring. It comprises means for compensating the expansion of the fluids contained therein in case of temperature increment. In a cylinder divided into two chambers one containing a gas and the other a hydraulic fluid is slidably mounted another hollow cylinder closed at both ends and containing essentially a hydraulic fluid and a reduced volume of gas under pressure. This second cylinder has an integral external piston-forming flange provided with opposite non-return valves permitting the passage in either direction of the hydraulic fluid which is thus caused to undergo a substantial loss of pressure, and at least one opening through the wall of said second cylinder under said flange so that the pressures can balance each other on either side of the wall of said second cylinder.

REFERENCES:
patent: 3533613 (1970-10-01), Bendicsen
patent: 3751023 (1973-08-01), Thomas
patent: 3820818 (1974-06-01), Kress et al.

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