Pumps – With condition responsive pumped fluid control – Pressure responsive relief or bypass valve
Patent
1977-06-08
1979-08-21
Vrablik, John J.
Pumps
With condition responsive pumped fluid control
Pressure responsive relief or bypass valve
417420, 418126, 418129, 418135, 418196, F04C 108, F04C 1500, F04B 4902, F04B 3500
Patent
active
041652061
ABSTRACT:
A module pump comprises a manifold having intake and outlet connections; a plate to which gears and a "shoe" (which function to define pump chambers for a pair of gears) or, in a pump having three gears two "shoes;" a drive for the gears, which in a preferred embodiment is a magnetic drive; and a barrier between the drive and the plate. Each of the modules is subject to variations in design depending upon end use and hence wide versatility is achieved without great increases in manufacturing cost since only one of the modules need be altered. Use of three gears doubles the capacity of the pump; if three gears are not needed the mounting holes for the third gear may be plugged. A unique bypass is installed in the manifold to permit flow back to the intake when the pressure exceeds an adjustable amount.
REFERENCES:
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patent: 2589528 (1952-03-01), Bergsma
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patent: 2817297 (1957-12-01), Mosbacher
patent: 2915976 (1959-12-01), Demtchenko
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patent: 3133506 (1964-05-01), Luciani
patent: 3376824 (1968-04-01), Turolla
patent: 3427985 (1969-02-01), Difford
patent: 3802804 (1974-04-01), Zimmermann
Martin Thomas B.
Pieters Ferdinandus A.
Caplan Julian
Micropump Corporation
Vrablik John J.
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