F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/7, 138/74.12
F04B 49/00 (2006.01) B62D 5/06 (2006.01)
Patent
CA 1073739
Abstract of the Disclosure The discosure relates to a control system for hydrau- lic pumps driven by the engine of a vehicle or he like and used for operating an auxiliary mechanism such as a vehicle mounted implement, a power steering system or the like. The disclosed system includes means for interrupting the flow of operating fluid to the pump during periods of time when the out- put of the pump is not required. With the pump inlet closed, all of the hydraulic fluid on the suction side is immediately pumped out the pump discharge, leaving only a small amount of residual oil on the surface of the working parts to provide lubrication. A valve is provided to prevent fluid from returning to the pump because of downstream pressure in the circuit. Con- trol means, utilizing pressure downstream from the pump, for operating the valve in the inlet of the pump are disclosed. -1-
237901
Eley James M.
Joyce Arthur B.
LandOfFree
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