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

1996-12-19

1998-10-27

Oberleitner, Robert J.

Spring devices

Vehicle

Comprising compressible fluid

188289, 267 6419, B60G 17044

Patent

active

058268634

ABSTRACT:
A self-pumping hydropneumatic shock absorbing strut with internal level regulation contains a work cylinder which is filled with damping medium and is under the pressure of gas cushions, and a piston which can be displaced in the work cylinder on the end of a piston rod having a cavity disposed therein. The cavity in the piston rod acts as a pump cylinder of a pump rod which is fastened to the work cylinder, and, as a result of the spring movements, damping medium can be transported from a low pressure chamber into a high pressure chamber. The pump rod is realized in two parts, including an inner part which is connected to the work cylinder and an outer part which coaxially surrounds the inner part at least partly with radial clearance, which outer part is non-detachably connected to the inner part on the end of the outer part farther from the work cylinder.

REFERENCES:
patent: 3152667 (1964-10-01), Powell
patent: 3376032 (1968-04-01), Schmid
patent: 3554525 (1971-01-01), De Koning
patent: 3593978 (1971-07-01), Lohr
patent: 3836132 (1974-09-01), McNally et al.
patent: 4105194 (1978-08-01), Sweltzer et al.
patent: 4437548 (1984-03-01), Ashiba
patent: 4577840 (1986-03-01), Meller et al.
patent: 4877223 (1989-10-01), Hackett
patent: 4993693 (1991-02-01), Lohr et al.
patent: 5564680 (1996-10-01), Sano et al.

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