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:
Apr. 14, 1998
Filed:
Jan. 03, 1997
Applicant:
Inventors:
Min-Der Wu, Tai Chung, TW;
Shyh-Jier Wang, Hsinchu Hsien, TW;
Assignee:
Industrial Technology Research Institute, Taipei, TW;
Primary Examiner:
Int. Cl.
CPC ...
H02K / ; H02K / ; H02K / ;
U.S. Cl.
CPC ...
310254 ; 310162 ; 310164 ;
Abstract
A stator for a single-phase axially wound brushless motor with a diametrical air-gap has a plate structure with at least one plate whose profile comprises: a central circular hole; a plurality of salient poles surrounding the central hole with each salient pole having a symmetrical profile; and a groove opening for every two adjacent salient poles. The ratio of the included angle of the two sides of a groove opening divided by the pitch angle of salient poles is between 0.55 to 0.68.