Power plants – Pressure fluid source and motor – Ram driven by fluid pumped from reservoir
Patent
1977-06-23
1978-12-26
Geoghegan, Edgar W.
Power plants
Pressure fluid source and motor
Ram driven by fluid pumped from reservoir
60482, 254 93R, 417443, F15B 1518
Patent
active
041309910
ABSTRACT:
An hydraulic pump comprising a plunger slidingly located within a housing. A first valve is adapted to allow fluid to be drawn from a reservoir into the housing during movement of the plunger in one direction, and a second valve is adapted to allow fluid to flow from the housing during the greater part of movement of the plunger in its other direction. A control apparatus is provided to control the second valve at or near the completion of the plunger's movement in the mentioned other direction to allow fluid to move back through the second valve and into the reservoir.
REFERENCES:
patent: 2557880 (1951-06-01), Lynn
patent: 3464204 (1969-09-01), Rudkin
patent: 3615157 (1971-10-01), Trotta
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