Dual Pump draft control valve

Details Dual Pump draft control valve Dual Pump draft control valve

1974-12-24

1976-04-13

Cohan, Alan

Fluid handling

Systems

Supply and exhaust

60486, 91 6, 91 47, 1375961B, 1376253, F15B 1309

Patent

active

039497836

ABSTRACT:
A draft control valve for use with two constant displacement pumps in an open center hydraulic system. The valve controls the implement position in response to the draft loads and manual control and normally employs pressurized fluid from a low volume pump for operating in response to draft load sensing for control the implement position and employs pressurized fluid from the high volume pump for relatively short periods of time for positioning of the implement in response by the operator and extreme draft loads.

REFERENCES:
patent: 1855060 (1932-04-01), Landenberger
patent: 3185175 (1965-05-01), Plate
patent: 3576104 (1971-04-01), Kokaly et al.
patent: 3596560 (1971-08-01), Butterworth

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