Geared pump with forced lubricated coupling

Details Geared pump with forced lubricated coupling Geared pump with forced lubricated coupling

2005-09-20

2005-09-20

Yu, Justine R. (Department: 3746)

Rotary expansible chamber devices

Shaft or trunnion lubrication or sealing by diverted working...

C418S206800, C417S410400, C417S440000

Reexamination Certificate

active

06945763

ABSTRACT:
A geared feed pump has a housing having a pump chamber in which a rotationally driven pair of gear wheels meshing with one another is disposed for pumping medium out of a suction chamber that communicates with a supply tank, along feed conduits, formed between the circumferential surface of the gear wheels and the circumferential walls of the pump chamber, into a pressure chamber. A drive shaft connected with one of the gear wheels via a coupling member is disposed inside the housing in a coupling chamber. The coupling chamber has a connection with the pressure chamber, so that lubrication of the coupling member is effected by the pumping medium.

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patent: 2 056 567 (1981-03-01), None
patent: 09-4570 (1997-07-01), None

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