Hydraulic system and automatically shiftable direction control v

Details Hydraulic system and automatically shiftable direction control v Hydraulic system and automatically shiftable direction control v

1975-09-12

1976-08-10

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

60456, 60484, 60486, 91414, 137597, F15B 1116

Patent

active

039733980

ABSTRACT:
An improved automatically shiftable direction control valve for a tractor hydraulic system wherein there is provided a charging pump, low pressure priority functions such as cooling and lubrication connected to the charging pump, a main pump, a continuously acting reversible function, a single-acting function, and a double-acting function all connected to the output of the main pump, and a manually operable direction control valve for each of the functions. The improved automatically shiftable direction control valve has a restricted passage causing a pressure drop which shifts the valve so as to direct the exhaust of the continuously-acting and double-acting functions to the charging circuit and to direct the exhaust of the single-acting function to the fluid reservoir.

REFERENCES:
patent: 3543516 (1970-12-01), Treichel

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