Adjusting switching device

Details Adjusting switching device Adjusting switching device

1996-03-13

1997-12-23

Nguyen, Hoang

Motors: expansible chamber type

With motive fluid valve

Independent control of bypass between opposed working chambers

91447, 91461, 60468, 60494, F15B 1108

Patent

active

056997140

ABSTRACT:
A switching device controlling at least one hydraulically operating apparatus has two check valves working in opposition to one another in a feed conduit and a discharge conduit, respectively. The conduits are connected to the operating apparatus, as well as to a pilot valve. Two openable nonreturn valves are connected parallel to the two check valves. The control line of one openable nonreturn valve is connected to the blocking connection of the other openable nonreturn valve. The switching device is especially for controlling a hydraulic cylinder to provide a float setting at low cost, with reliable operation, and with few components.

REFERENCES:
patent: 4362018 (1982-12-01), Torii
patent: 5117950 (1992-06-01), Kobayashi et al.
patent: 5259293 (1993-11-01), Brunner
patent: 5351601 (1994-10-01), Zeuner et al.

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