Bearing lubrication system for gear pump having clearance betwee

Details Bearing lubrication system for gear pump having clearance betwee Bearing lubrication system for gear pump having clearance betwee

1979-06-28

1981-09-15

Vrablik, John J.

Rotary expansible chamber devices

Grooved abutting cylinder-rotating member end surfaces

Working fluid portion fills intertooth spaces or spaces...

418102, 418131, F04C 218, F04C 1500

Patent

active

042894603

ABSTRACT:
A gear pump suitable for pumping contaminated fuel has a lubrication passage in a pump bearing which receives fuel from the clearance volume between the bearing and the housing in the pump discharge arc. The clearance entrance between the bearing and the housing, which functions as a filter, is smaller than the passage so that contaminants traversing the clearance will not obstruct the passage. Since only contaminants smaller than the clearance entrance can enter the passage, the passage may be made sufficiently small so as not to adversely affect pump performance.

REFERENCES:
patent: 2993450 (1961-07-01), Weigert
patent: 3043230 (1962-07-01), Molly
patent: 3313238 (1967-04-01), Muller et al.

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