Electric motor

Details Electric motor Electric motor

2007-05-18

2008-11-25

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S054000, C310S058000, C310S06000A, C310S061000, C310S06700R, C310S089000

Reexamination Certificate

active

07456536

ABSTRACT:
An electric motor includes a rotor shaft arranged in a casing and having an axial hollow bore formed therethrough for passage of lubricating oil, a rotor, a stator, a pair of bearings each having an inner race and an outer race, a pair of bearing fixing parts supporting the rotation of the rotor shaft, and bearing cooling devices each having a cylindrical heat dissipation portion fixedly secured to the rotor shaft so as to be in contact with either one of end faces of the individual inner races, the heat dissipation portion extending from the one end face of each inner race to a side opposite to the bearings. A pair of spaces between rotor-side end faces of the bearings and the bearing fixing parts, respectively, are in communication with ring gaps between the heat dissipation portions and the rotor shaft, respectively, through radial communication holes in the rotor shaft.

REFERENCES:
patent: 2846600 (1958-08-01), Potter
patent: 2896569 (1959-07-01), Ferguson, Sr. et al.
patent: 3466478 (1969-09-01), Gail
patent: 4574210 (1986-03-01), Wieland
patent: 5726511 (1998-03-01), Kusase et al.
patent: 6373158 (2002-04-01), Hsu et al.
patent: 6710479 (2004-03-01), Yoshida et al.
patent: 6727609 (2004-04-01), Johnsen
patent: 6903471 (2005-06-01), Arimitsu et al.
patent: 7091635 (2006-08-01), Gilliland et al.
patent: 2001/0017498 (2001-08-01), Matsuoka et al.
patent: 2002/0084702 (2002-07-01), Balas
patent: 2004/0012286 (2004-01-01), Zens
patent: 11-166497 (1999-06-01), None

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