Motors: expansible chamber type – With motive fluid valve – Relatively movable serial valves
Patent
1996-06-21
1998-05-05
Lopez, F. Daniel
Motors: expansible chamber type
With motive fluid valve
Relatively movable serial valves
91449, F15B 11044
Patent
active
057461082
ABSTRACT:
Disclosed is a hydraulic control system of a transfer system for a machine tool, including a hydraulic pump for generating hydraulic pressure, a first directional control valve for controlling the flow direction of fluid from the hydraulic pump, a first flow speed control part located between the first direction control valve and a rotary cylinder to control the flow speed of fluid flowing therebetween, a second direction control valve controlling a flow direction of fluid fed from the first directional control valve and returned to a fluid tank, and a second flow speed control part for controlling flow speed of the returning fluid in accordance with a port variation of the second directional control valve.
REFERENCES:
patent: 840876 (1907-01-01), Steedman
patent: 2837875 (1958-06-01), Happel
patent: 3171331 (1965-03-01), Samuel
patent: 3635020 (1972-01-01), Mahlmann
patent: 3848515 (1974-11-01), Gardiner et al.
Hyundai Motor Company
Lopez F. Daniel
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