Hydraulic cylinder

Details Hydraulic cylinder Hydraulic cylinder

2006-07-25

2006-07-25

Lazo, Thomas E. (Department: 3745)

Motors: expansible chamber type

With motive fluid valve

Valved piston

C091S433000, C092S110000

Reexamination Certificate

active

07080589

ABSTRACT:
The invention relates to a hydraulic cylinder comprising a piston rod bearing at least one tool receiving element. Said hydraulic cylinder is characterized by an automatic disconnection device which is controlled in a hydraulic-mechanical manner, with a medium for the actuation of the hydraulic cylinder. Said medium which is used for building-up force, is also the medium which is used for the automatic disconnection device. Said hydraulic cylinder also comprises a first valve slider and a second valve slider which are used for disconnecting the displacement of a piston, which is connected to a piston rod according to a possible obstruction found in the path of the outward moving piston rod before a desired position by deviating the medium in the region of the piston.

REFERENCES:
patent: 2858804 (1958-11-01), Banker
patent: 2969044 (1961-01-01), Leduc
patent: 4258609 (1981-03-01), Conway
patent: 5079997 (1992-01-01), Hong
patent: 5802953 (1998-09-01), Nakamura
patent: 5918526 (1999-07-01), Jauhola
patent: 2 538 047 (1984-06-01), None

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