Diaphragm vacuum pump

Details Diaphragm vacuum pump Diaphragm vacuum pump

1973-10-10

1976-05-04

Freeh, William L.

Pumps

Successive stages

417470, F04B 4504, F04B 300

Patent

active

039543528

ABSTRACT:
A diaphragm vacuum pump, which comprises a first and a second pressure reduction chambers respectively at the both faces of the spring loaded diaphragm piston assembly of the pump. The first and second chambers are respectively connected with a pneumatically operated device and the atmosphere and connected to each other, suction and discharge of the air in the first chamber being conducted in an opposite cycle against those in the second chamber to subsequently produce vacuum of a high degree by the reciprocation of the diaphragm piston assembly.

REFERENCES:
patent: 2189526 (1940-02-01), Babitch
patent: 2631538 (1953-03-01), Johnson
patent: 2798662 (1957-07-01), Evans
patent: 3035676 (1962-05-01), Nallinger
patent: 3045896 (1962-07-01), Compton et al.
patent: 3186349 (1965-06-01), Compton et al.
patent: 3252424 (1966-05-01), Johnson et al.
patent: 3298321 (1967-01-01), Reifel
patent: R14029 (1915-12-01), Schiodt
patent: R25849 (1965-09-01), Smith

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