The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Feb. 27, 2007

Filed:

May. 04, 2006
Applicants:

Kouichi Ihata, Okazaki, JP;

Shigenobu Nakamura, Anjo, JP;

Motoki Ito, Obu, JP;

Masatoshi Koumura, Toyota, JP;

Inventors:

Kouichi Ihata, Okazaki, JP;

Shigenobu Nakamura, Anjo, JP;

Motoki Ito, Obu, JP;

Masatoshi Koumura, Toyota, JP;

Assignee:

Denso Corporation, Kariya, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 9/06 (2006.01); H02K 11/04 (2006.01); H02K 5/18 (2006.01); H02K 5/20 (2006.01);
U.S. Cl.
CPC ...
Abstract

A rotor and a stator are contained in a housing composed of front and rear frames, and a rectifier is mounted on the rear frame and covered with a rear cover having axial and radial openings. A minus heatsink plate having cooling fins extending in the axial direction is disposed to face the radial openings, forming radial air passages, and another air passage is formed between the minus heatsink plate and the rear frame. Cooling air introduced from the radial openings flows through the cooling fins and through the passage between the minus heatsink plate and the rear frame. Thus, efficiency for cooling the rectifier is enhanced.


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