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:
Mar. 03, 1998
Filed:
Jan. 31, 1996
Masatomo Sumi, Takefu, JP;
Shigeo Inaki, Takefu, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In assembling a stator being divided into a pole portion and a yoke portion and provided with a winding on the insulated pole portion, the yoke portion is forcibly enlarged outwardly, whereafter the tip ends of the projections of the pole portion are fitted in the recesses of the yoke portion. The two opposing surfaces of each recess are made parallel to each other and the bottom surface of the recess is made parallel to the outer peripheral surface of the yoke portion. The thickness of a portion existing between the bottom surface and the outer peripheral surface is not exceeding 3% of the diameter of the yoke portion and is not less than the thickness of an iron plate of the laminated iron core, whereby the press-fitting load applied when the pole portion is fitted into the yoke portion enlarged is reduced. Thus, even a large-sized stator iron core can readily be assembled and an electric motor of improved properties and enhanced output obtained.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile