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:
Jul. 17, 1990
Filed:
Mar. 30, 1989
Katsuyoshi Fukaya, Aichi, JP;
Aisan Kogyo Kabushiki Kaisha, Aichi, JP;
Abstract
Disclosed is an electric motor having a stator structure including an assembly of first and second cup shaped members each having a circumferential surface portion in the form of a cylindrical wall having at a free end thereof a recess and a projection formed as an extension of the circumferential wall portion and first and second magnetic pole plates each having an annular plate-formed portion having a plurality of additional recesses formed along an outer circumferential edge thereof. The projection formed on the first cup shaped members is loosely engaged in one of the additional recesses formed in the first magnetic pole plate, force fitted in one of the additional recesses formed in the second magnetic pole plate and loosely engaged in one of the recesses formed in the second cup shaped member. The projection formed on the second cup shaped member is loosely engaged in one of the additional recesses formed in the second magnetic pole plate, force fitted in one of the additional recesses formed in the first magnetic pole plate and loosely engaged in one of the recesses formed in the first cup shaped member. The first and second cup shaped members and the first and second magnetic pole plates have a plurality of magnetic pole pieces formed in a concentrical relationship thereon.