Electric oil pump

Details Electric oil pump Electric oil pump

2007-07-10

2007-07-10

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Lubricators

Crankcase, pressure control

C123S19800E

Reexamination Certificate

active

11314242

ABSTRACT:
An object of the invention is to provide an electric oil pump with greatly improved operation, increased endurance, and extended service life of an Oldham's coupling connecting a drive shaft that rotates a rotor in a pump housing and a motor output shaft in a motor housing.The electric pump comprises a pump housing having a rotor and a drive shaft for rotatably supporting the rotor, and a motor housing connected to the pump housing and having an output shaft connected to the drive shaft via an Oldham's coupling. The pump housing is provided with a coupling chamber for accommodating the Oldham's coupling, and a linking channel for transporting the leaked oil from a rotor chamber accommodating the rotor of the pump housing to the coupling chamber.

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patent: 2002/0020385 (2002-02-01), Stromsky et al.
patent: 2002/0088425 (2002-07-01), Westerbeke, Jr.
patent: 2005/0039718 (2005-02-01), Tsutsumi et al.
patent: 11-173278 (1999-06-01), None

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