F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
138/74.12
F15B 11/16 (2006.01) A01D 41/00 (2006.01)
Patent
CA 1141627
IMPROVED HYDRAULIC SYSTEM FOR HARVESTING MACHINES ABSTRACT OF THE DISCLOSURE An open center hydraulic system in which a pair of flow divider valves is connected in series with the system's hydraulic pump to create a parasitic pressure upstream of these flow valves and the feeder and separator cluthces are controlled remotely by simple solenoid actuated two-position valves. The cylinders actuating the clutches are of sufficient size upon application of the minimum parasitic pressure to hold the clutches in a given position so that no center neutral position is necessary on the two-position valves.
327680
Krukow Eugene J.
Stroup Norman G.
Case Corporation
Meredith & Finlayson
LandOfFree
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