Pumps – Motor driven – Relatively movable pumping members driven by relatively...
Patent
1996-06-06
1998-01-13
Freay, Charles G.
Pumps
Motor driven
Relatively movable pumping members driven by relatively...
417343, 417393, 417395, 417534, 92140, F04B 1700
Patent
active
057072175
ABSTRACT:
The invention comprises an improved pressure transfer module having, in one embodiment, two double-diaphragm pumps each having its diaphragms connected to one another by a respective drive shaft for reciprocating motion. Spool valve assemblies are mounted directly on the connecting shafts of each pump and arranged to maintain the operation of the two diaphragms of the pumps 90.degree. out of phase in that each such assembly constitutes pressurized water control valves for the other pump. The two pumps are mounted with the drive shafts at 90.degree. to one another, and arranged to pump in sequence so that a complete pumping cycle comprises four pumping strokes, one every 90.degree.. To insure reversal of motion of the shafts in proper phase, the invention includes either two, meshed square cams and cam surfaces formed on respective shafts connecting the pumping surfaces, or a floating crankshaft with each end pivoted in one of the connecting shafts.
REFERENCES:
patent: 1920014 (1933-07-01), Horton et al.
patent: 3630642 (1971-12-01), Osterman
patent: 3652187 (1972-03-01), Loeffler et al.
patent: 4083186 (1978-04-01), Jackson, Sr.
patent: 4385869 (1983-05-01), Omata
patent: 4559866 (1985-12-01), Brenner
Advertising Supplement for Wilden Pumps from Catalog File Section of Thomas Register 1995, pp. 11461 to 11464 inclusive.
"Pumps, Diaphragm", a listing manufacturers in Thomas Register 1995, pp. 25737/PUM to 25742/PUM inclusive.
Catalog M37B for Haskell Air Driven Amplifiers, 1983 of Haskell, Inc., Burbank, Calif., pp. 1-3.
Catalog TSE7915-83 for Air Driven Hydraulic Pumps etc. of Jun., 1983 of Teledyne Sprague Engineering, Gardena, California, pp. 1-2.
Freay Charles G.
Vaughn Thermal Corporation
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