Container piston rod unit

Details Container piston rod unit Container piston rod unit

1989-09-06

1991-09-17

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Including seal or guide

277 59, F16F 936, B65D 5300

Patent

active

050486470

ABSTRACT:
In a gas spring, the piston rod extends through one end of a container. Sealing rings are provided at this end of the container. These sealing rings are in sealing engagement with the piston rod and possibly also in sealing engagement with the inner surface of the container. Axially subsequent sealing rings are made of different caoutchouc materials. These different caoutchouc materials have different coefficients of permeation.

REFERENCES:
patent: 3856287 (1974-12-01), Freitag
patent: 4306729 (1981-12-01), Hiramatsu et al.
patent: 4342447 (1982-08-01), Marx
patent: 4360192 (1982-11-01), Ishida
patent: 4568777 (1985-04-01), Yamamoto et al.

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