F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
138/79.1
F15B 11/16 (2006.01) B60P 1/16 (2006.01) F15B 11/17 (2006.01)
Patent
CA 1053120
HYDRAULIC SYSTEM AND AUTOMATICALLY SHIFTABLE DIRECTION CONTROL VALVE THEREFOR Abstract of the Disclosure An improved automatically shiftable direction control valve for a tractor hydraulic system wherein there is provided a charg- ing pump, low pressure priority functions such as cooling and lubrication connected to the charging pump, a main pump, a con- tinuously 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 pres- sure drop which shifts the valve so as to direct the exhaust of the continuously-acting and double-acting functions to the charg- ing circuit and to direct the exhaust of the single-acting func- tion to the fluid reservoir.
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