Fluid spring

Details Fluid spring Fluid spring

1989-06-22

1991-08-27

Graham, Matthew C.

Spring devices

Vehicle

Comprising compressible fluid

267 6417, 267113, F16F 902

Patent

active

050427822

ABSTRACT:
In a gas spring having two working chambers, a pressurized gas is provided within both the working chambers. One of the working chambers is connected with a pressure reservoir. A shut-off valve is provided between the pressure reservoir and the respective working chamber and is automatically controlled such as to admit pressurized gas from the reservoir to the respective chamber when the pressure value within the respective working chamber falls below a predetermined pressure value. The shut-off valve is closed again when the pressure within the respective working chamber has risen again up to a determined pressure. Accordingly, the pressure within the working chambers does not fall below the predetermined value as long as the increased pressure within the reservoir exists.

REFERENCES:
patent: 1142194 (1915-06-01), Morgan
patent: 2892625 (1959-06-01), Hartel
patent: 3658313 (1972-04-01), Hahn
patent: 3694111 (1972-09-01), Braun
patent: 4678203 (1987-07-01), Rohner et al.
patent: 4721289 (1988-01-01), Hennells
patent: 4826141 (1989-05-01), Buma et al.

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