Hydraulic power unit

Details Hydraulic power unit Hydraulic power unit

1981-09-30

1984-06-26

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Pulsator

60567, 60576, 60581, 60593, B60T 1300

Patent

active

044558287

ABSTRACT:
A maximum displacement, reciprocating air operated demand only hydraulic power 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 slave cylinder having a slave piston therein powered by said power piston, said slave cylinder being connected to each said hydraulic motor to power same, a valve mechanism for controlling the supply of air and oil to said power and slave cylinders, a mechanism to control the valve mechanism to operate the unit in a steady reciprocating motion, and an intensifier 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.

REFERENCES:
patent: 2032185 (1936-02-01), Sciaky
patent: 3001369 (1961-09-01), Allais
patent: 3257810 (1966-06-01), Hanni
patent: 3407601 (1968-10-01), Beck
patent: 3513656 (1970-05-01), Engle
patent: 3633365 (1972-01-01), Belknap
patent: 4170876 (1979-10-01), Dits et al.
patent: 4241581 (1980-12-01), Chace

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