Activation device for a piston/cylinder unit which can be...

Details Activation device for a piston/cylinder unit which can be... Activation device for a piston/cylinder unit which can be...

2005-05-03

2005-05-03

Lazo, Thomas E. (Department: 3745)

Motors: expansible chamber type

With motive fluid valve

Independent control of bypass between opposed working chambers

C091S464000, C297S362130

Reexamination Certificate

active

06886450

ABSTRACT:
A piston/cylinder unit having a selectively inhibited movement includes a cylinder filled with a hydraulic medium and a piston arranged on a piston rod and dividing the cylinder into working spaces. A flow connection system having a flow connection is arranged between the first and second working spaces. The flow connection system includes an on-off valve having a movable valve element which opens the flow connection as a function of a position of the movable valve element. The flow connection system further includes a load-dependent valve arranged in series with the on-off valve for inhibiting complete flow through the flow connection independently from the on-off valve when a load on the piston/cylinder unit is lower than an inhibiting load.

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