F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
138/41.15
F04B 13/00 (2006.01) F04B 49/00 (2006.01) F04B 49/24 (2006.01)
Patent
CA 1042313
VARIABLE DISPLACEMENT HYDRAULIC SYSTEM Abstract of the Disclosure A variable displacement hydraulic system includes a charge system having a substantially constant charge pressure, a re- ciprocating piston type pump having a drive chamber in communi- cation with the charge system, and a control valve regulating the flow of fluid from the charge system to the inlet of the reciprocating piston type pump which is manually movable from a closed fluid blocking position through a first range in which it varies and controls the quantity of fluid flowing to the pump inlet and a second range in which it varies the control of pres- sure of fluid flowing to the pump inlet at flow rates greater than those obtainable in the first range.
258868
Hemming Raymond J.
Ring Curtis P.
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