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专利名称：Hydraulic power unit发明人：Joseph D. Snitgen申请号：US06/307232申请日：19810930公开号：US04455828A公开日：19840626
摘要：A maximum displacement, reciprocating air operated demand only hydraulicpower unit for supplying hydraulic fluid under pressure to one or more hydraulic motors,comprising a pneumatic power cylinder having a power piston therein, a hydraulic slavecylinder having a slave piston therein powered by said power piston, said slave cylinderbeing connected to each said hydraulic motor to power same, a valve mechanism forcontrolling the supply of air and oil to said power and slave cylinders, a mechanism tocontrol the valve mechanism to operate the unit in a steady reciprocating motion, and anintensifier for two stage operation of said motors in either operating direction of the unit.An accumulator may also be included to supply fluid when the unit changes direction.
申请人：SNITGEN; JOSEPH D.
代理机构：Harness, Dickey & Pierce
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