Motors: expansible chamber type – With motive fluid valve – Pilot valve
Patent
1993-04-08
1994-07-26
Michalsky, Gerald A.
Motors: expansible chamber type
With motive fluid valve
Pilot valve
13759615, 251 35, F15B 13042, F16K 31363
Patent
active
053318838
ABSTRACT:
The disclosure is directed to a valve arrangement for controlling a linear or rotary hydraulic motor. The valve is connected to a pump which acts as a pressure medium source by the valve means and to a tank. The tank connection may be either direct or indirect. The arrangement of the present invention includes at least one seat valve located in a main flow connection between the pump and a port of the motor. Each of the seat valves would adjust the flow in the main flow connection to the motor via a pilot flow adjustable by a pilot valve. The pilot flow originates from the main flow through the seat valve.
REFERENCES:
patent: 1046236 (1912-12-01), Wagner
patent: 3175800 (1965-03-01), Donner et al.
patent: 4535809 (1985-08-01), Andersson
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