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.
Patent No.:
Date of Patent:
Dec. 09, 2008
Filed:
May. 25, 2004
Applicants:
Tsutomu Natsuhara, Shiga-ken, JP;
Hidenori Shimizu, Hikone, JP;
Mitsumasa Mizuno, Neyagawa, JP;
Hiroki Inoue, Hikone, JP;
Inventors:
Tsutomu Natsuhara, Shiga-ken, JP;
Hidenori Shimizu, Hikone, JP;
Mitsumasa Mizuno, Neyagawa, JP;
Hiroki Inoue, Hikone, JP;
Assignee:
Matsushita Electric Works, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 11/00 (2006.01); H02K 5/20 (2006.01); H02K 9/22 (2006.01); H02K 5/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A brushless motor has a stator, a rotor and a circuit board for controlling rotation of the rotor. The stator has iron cores and coils wound around the iron cores. Switching elements for turning on and off electric power to be supplied to the coils for the stator are mounted to the circuit board. A heat-radiating member is fixed to the iron cores.