Air driven pump

Details Air driven pump Air driven pump

1974-08-13

1976-06-15

Maslousky, Paul E.

Pumps

Motor driven

Fluid motor

91306, 91307, 91309, 91313, F01L 2506

Patent

active

039633837

ABSTRACT:
The device is an air driven piston in a cylinder driving a pump. A shuttle valve is provided to control the admission of air under pressure to, and exhaust from the cylinder. The shuttle valve is a double ended piston operating in coaxial bores with a stem part of smaller diameter between the ends. The air passes to the cylinder through the bore around the intermediate part of the double ended shuttle valve. The piston at one end of the shuttle valve has greater area exposed to pressure than the area of the piston on the other end of the valve. The shuttle valve is operated by one or more pilot valves that are actuated by the main piston. The shuttle valve is shifted by controlling the pressures acting on the parts of the pistons having exposed areas of different sizes.

REFERENCES:
patent: 159782 (1875-02-01), Westinghouse, Jr.
patent: 785889 (1905-03-01), Jones
patent: 1962986 (1934-06-01), Dole
patent: 3035548 (1962-05-01), Wittlich
patent: 3489100 (1970-01-01), Hill

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