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US 4,392,779 AGranted
Marine drive water pump
AssigneeBrunswick Corporation
InventorsJames L. Bloemers, James M. Schiek, Michael E. Frazzell, Michael A. Karls
Life of this patent
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Abstract
Marine drives having water cooled engines utilize a water pump mounted over the drive shaft and internal to the drive shaft housing to provide engine cooling, the pump having stamped metal housing parts and a flexible impeller.
Claims5
In a marine drive having a water cooled engine rotating a drive shaft and having a cooling water intake, the improved water pump comprising:
- (a) a base plate mounted in said marine drive, said base plate having an eccentrically positioned drive shaft opening and a water inlet opening into the cooling water intake,
- (b) a cup-shaped impeller housing formed of deformed sheet metal having an end wall and a peripheral wall, said end wall having an eccentrically positioned drive shaft opening and a water outlet,
- (c) an impeller positioned in said impeller housing for propelling water received at said water inlet out said water outlet, said impeller having a central hub coupled to the drive shaft and a plurality of flexible impeller vanes extending outwardly from said central hub into contact with the peripheral wall of said impeller housing, and
- (d) a shroud formed of deformed sheet metal fitting over said impeller housing to embrace the end wall and peripheral wall of said housing, said shroud being secured to said base plate, said shroud forming an arcuate collecting chamber between the shroud and the impeller housing to connect said outlet with a water discharge opening for said pump angularly displaced from said water outlet about the axis of the drive shaft.
1 more element
Dependencies are inferred from the claim text.