Steplessly blockable setting device

Details Steplessly blockable setting device Steplessly blockable setting device

1987-08-19

1988-11-15

Butler, Douglas C.

Spring devices

Vehicle

Comprising compressible fluid

188319, 188300, F16F 500, E05F 304, E05F 312

Patent

active

047843756

ABSTRACT:
A hydropneumatic spring usable as steplessly blockable setting device comprises a by-pass connection in its piston. In this by-pass connection there is arranged a shut-off valve actuatable from the exterior. Furthermore the by-pass connection can be opened by excess pressure in each of the two working chambers. In this way the setting of length of the hydropneumatic spring can be altered by predetermined inward and/or outward thrust forces even when the shut-off valve is closed.

REFERENCES:
patent: Re29497 (1977-12-01), Freitag
patent: 3108610 (1963-10-01), De See
patent: 3762514 (1973-10-01), Freitag
patent: 3828651 (1974-08-01), Dorner et al.
patent: 4257582 (1981-03-01), Wirges

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