Pumps – Changeable by assembly or disassembly – For reverse drive or flow
Patent
1986-04-03
1987-06-16
Croyle, Carlton R.
Pumps
Changeable by assembly or disassembly
For reverse drive or flow
417413, 417454, F04B 1900, F04B 3700, F04B 4300, F04B 4500
Patent
active
046733361
ABSTRACT:
An oil free diaphragm gas pump for providing compressed gas and a gas vacuum is disclosed and includes a pressure tank, a concave pressure bulkhead, a first circular flange mounted on the pressure bulkhead and having a bevel on its inner edge, a round rigid diaphragm with an undulated circumferential periphery with its edge mounted on the bevel of the first circular flange, a round flexible diaphragm with an undulated circumferential periphery which matches the shape of the round rigid diaphragm and is mounted on the round rigid diaphragm, a second circular flange which together with the first circular flange presses together the flexible diaphragm and the rigid diaphragm, a prime mover for the purpose of moving the flexible diaphragm, and interchangable compressor and vacuum cartridge means alternately mounted between the diaphragms and the pressure tank for providing switching means for controlling the gas flow required for providing a compressor and a vacuum.
REFERENCES:
patent: Re31711 (1984-10-01), Horiuchi
patent: 1737388 (1929-11-01), Redmond
patent: 2144662 (1939-01-01), Paasche
patent: 2203479 (1940-06-01), Witwer et al.
patent: 2669176 (1954-02-01), Lazerus
patent: 3195808 (1965-07-01), Holt
patent: 3947156 (1976-03-01), Becker
Croyle Carlton R.
Stout Donald E.
Tower Lee W.
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