Battery powered pump

Details Battery powered pump Battery powered pump

1975-06-30

1977-05-03

Croyle, Carlton R.

Pumps

Motor driven

Electric or magnetic motor

415169R, F04B 3504

Patent

active

040211509

ABSTRACT:
Leakage of fluid is prevented by a negative pressure created in a motor-shaft bearing section by providing means for forcing fluid in the pumping chamber to flow in one direction.

REFERENCES:
patent: 823027 (1904-06-01), Pitman
patent: 1108053 (1914-08-01), Wiwi et al.
patent: 2595406 (1952-05-01), Popovich
patent: 2909316 (1959-10-01), Proltaczka
patent: 2919120 (1959-12-01), Baxter
patent: 2961129 (1960-11-01), Bullock
patent: 3195148 (1965-07-01), Merkel, Jr.
patent: 3647323 (1972-03-01), Thomas
patent: 3697198 (1972-10-01), Holder, Jr.
patent: 3719429 (1973-03-01), Rule
patent: 3885127 (1975-05-01), Walter et al.

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