Pumps – Motor driven – Fluid motor
Patent
1993-09-27
1994-07-12
Gluck, Richard E.
Pumps
Motor driven
Fluid motor
F04B 1700
Patent
active
053283392
ABSTRACT:
A pump driven by air pressure comprising an air cylinder, a piston in the cylinder to move up and down, an upper cylinder cap and a lower cylinder cap, a connector combined with a tubular projection of the upper cap for gas to flow through an interior of the connector, a valve base connected with a tubular projection of the lower cap, the piston moving up and down to move a tubular rod for changing gas flowing route and then forcing the piston to move in a reversed direction for pumping in liquid.
REFERENCES:
patent: 2012839 (1935-08-01), Turner
patent: 2935953 (1960-05-01), Coberly
patent: 5173036 (1992-12-01), Fladby
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