Water pump for marine propulsion devices

Details Water pump for marine propulsion devices Water pump for marine propulsion devices

1985-10-30

1987-06-16

Peters, Jr., Joseph F.

Marine propulsion

Means for accomodating or moving engine fluids

Cooling for engine

418154, 440900, B63H 2138

Patent

active

046733590

ABSTRACT:
A fluid pump assembly comprising a circular drive shaft including a flat side, and an impeller hub including an inner surface formed in part by a circular bore receiving the drive shaft and by a generally crescent-shaped keyway adjoining the bore and having opposite ends, one of the ends being blunt, and an arcuate surface extending between the ends. The assembly also comprises a retainer key positioned in the keyway and having a flat surface complementary with the flat side of the drive shaft, an arcuate surface complementary with the arcuate surface of the keyway, and a blunt end complementary with the blunt end of the keyway.

REFERENCES:
patent: 550019 (1895-11-01), Gray et al.
patent: 599824 (1898-03-01), Barbour
patent: 641106 (1900-01-01), Hawksworth
patent: 3193312 (1965-07-01), Ehner
patent: 3955905 (1976-05-01), Frommholz
patent: 4392779 (1983-07-01), Bloemers

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