Load responsive fluid control valves

Details Load responsive fluid control valves Load responsive fluid control valves

1976-12-13

1978-05-16

Michalsky, Gerald A.

Fluid handling

Systems

Supply and exhaust

60445, 91421, 91446, 1375961, F15B 1308

Patent

active

040893464

ABSTRACT:
A load responsive direction and flow control valve for use in a fluid power load responsive system. The valve maintains a selected constant flow level for control of both positive and negative loads in parallel or series type circuits, irrespective of the change in the load magnitude or change in the fluid pressure, supplied to the valve. When controlling positive or negative loads the valve maintains a constant pressure differential across a flow control metering orifice utilizing a single load responsive controller, first by throttling fluid entering the inlet chamber and then by throttling the fluid leaving the outlet chamber. The load responsive controller blocks the pump flow to the motor while controlling negative load, providing the motor inlet with fluid from the motor exhaust.

REFERENCES:
patent: 3807447 (1974-04-01), Masuda
patent: 3882896 (1975-05-01), Budzich
patent: 3984979 (1976-10-01), Budzich
patent: 4020867 (1977-05-01), Sumiyoshi

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