Oil pump

Details Oil pump Oil pump

1982-10-22

1985-05-21

Cline, William R.

Rotary expansible chamber devices

Working chamber surface expressed mathematically

418171, F04C 210

Patent

active

045183325

ABSTRACT:
An oil pump using internal gearing, wherein the difference in number of teeth between the internal and external gears is one, and wherein the inner rotor is directly connected to the crankshaft of the internal combustion engine or to the transmission shaft. The inner rotor is formed from a trochoidal curve and tracking circle which the outer rotor is formed from a trochoidal curve theoretically ideal for the inner rotor but modified by having circularly arched inwardly curved portions so as to decrease confinement of the inner rotor and smooth the operation thereof.

REFERENCES:
patent: 2475242 (1949-07-01), Iavelli
patent: 2490391 (1946-12-01), Wentling
patent: 2965039 (1960-12-01), Morita
patent: 3129875 (1964-04-01), Cirillo
patent: 3955903 (1976-05-01), de Dobo

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