Adjustable-length gas spring with permanent release mechanism

Details Adjustable-length gas spring with permanent release mechanism Adjustable-length gas spring with permanent release mechanism

1987-01-22

1988-10-25

Butler, Douglas C.

Spring devices

Vehicle

Comprising compressible fluid

188300, F16F 932

Patent

active

047798513

ABSTRACT:
An adjustable-length gas spring has a compressed gas-filled housing in which a piston with a piston rod is sealingly guided. At one end of the housing is provided a valve with a valve pin for connecting or separating two housing chambers, the valve pin being movable into the housing against the force exerted thereon by the gas pressure with the valve in the open position. The pin is movable against such force when the valve is in the closed position. There is also a permanent release mechanism for securing the valve pin when the valve is in the open position. In order to permit a particularly simple operation of the gas spring, the permanent release mechanism is formed by a bi-stable locking mechanism constructed in the manner of a mechanical flip-flop and which is coupled to the valve pin, being operated by the insertion thereof into the housing.

REFERENCES:
patent: 2351194 (1944-06-01), Davies
patent: 3656593 (1972-04-01), Bauer
patent: 4139182 (1979-02-01), Nagase et al.
patent: 4200332 (1980-04-01), Brauning
patent: 4221238 (1980-09-01), Madsen

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