Longitudinally controllable adjustment device

Details Longitudinally controllable adjustment device Longitudinally controllable adjustment device

1990-07-11

1992-01-14

Look, Edward K.

Motors: expansible chamber type

With motive fluid valve

Valved piston

91222, 91428, 92165R, 92168, 267131, F15B 1108

Patent

active

050799924

ABSTRACT:
A longitudinally controllable adjustment device comprises a cylindrical housing, in which a piston rod with a piston is slidable and sealingly extending outwards. Furthermore it comprises a valve for controlling length adjustment of the device. In order to avoid a destruction of seals preventing a flow to the outside of pressure medium at least two seals are provided between the housing and the piston rod whereby a seal between the outer end of the housing and a further seal prevents an inflow of gas and in particular of liquid from the outside into the housing.

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