Longitudinally controllable adjustment device

Details Longitudinally controllable adjustment device Longitudinally controllable adjustment device

1990-11-29

1992-03-17

Halvosa, George A.

Brakes

Internal-resistance motion retarder

With means for locking parts together temporarily

137270, 251333, 267 6412, 277207R, 297355, F16F 934, A47B 910

Patent

active

050960296

ABSTRACT:
A longitudinally controllable adjustment device, in particular a gas spring partially filled with a fluid, has a piston disposed on a piston rod and a valve, inside of which a valve body is slidable in its longitudinal direction. It has a tapered section by which a seal, abutting on a sealing face, can be bridged. In order to make possible a long-stroke embodiment and a short-stroke embodiment, the seal has two sealing beads, of which the one sealing bead sealingly abuts in all embodiments against a truncated cone-like sealing face of the valve body, while the other sealing bead, if required, abuts on an optionally provided additional cylindrical sealing face between the truncated cone-like sealing face and the tapered section.

REFERENCES:
patent: 2992817 (1961-07-01), Templeton
patent: 3656593 (1972-04-01), Bauer
patent: 3913901 (1975-10-01), Molders
patent: 4257582 (1981-03-01), Wirges
patent: 4386766 (1983-06-01), Bauer et al.
patent: 4632228 (1986-12-01), Oster et al.
patent: 4867317 (1989-09-01), Wildemann et al.

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