Self-pumping hydropneumatic shock absorbing strut with internal

Details Self-pumping hydropneumatic shock absorbing strut with internal Self-pumping hydropneumatic shock absorbing strut with internal

1996-12-06

1998-10-27

Oberleitner, Robert J.

Spring devices

Vehicle

Comprising compressible fluid

267 6426, B60G 1700

Patent

active

058268626

ABSTRACT:
Self-pumping hydropneumatic shock absorbing strut with internal level regulation, with a work cylinder which is filled with oil and is under the pressure of gas cushions, and with a damping piston which can be displaced in this work cylinder. The damping piston slides on the end of a hollow piston rod, the cavity in the piston rod acts as a pump cylinder of a pump rod which is fastened to the work cylinder. Whereby, when the piston rod is extended, damping medium is sucked out of a reserve chamber by way of a suction valve, and when the piston rod is inserted, damping medium is transported into the work chamber by way of a non-return valve and a ring-shaped gap which is formed between a control sleeve and the hollow piston rod. Whereby the pump rod is fastened so that it can move axially, radially and/or with free angular movement in the end wall of the work cylinder.

REFERENCES:
patent: 3291475 (1966-12-01), Allinquant
patent: 3554525 (1971-01-01), de Koning
patent: 3593978 (1971-07-01), Lohr
patent: 5062616 (1991-11-01), Sommer
patent: 5564680 (1996-10-01), Sano et al.

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