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. 08, 1992
Filed:
Aug. 26, 1991
Applicant:
Inventor:
Masayuki Shinto, Takefu, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310156 ; 310 42 ; 310261 ; 310271 ;
Abstract
A rotor for a rotary machine with permanent magnets includes an iron core member, permanent magnets, each having an arcuate cross section and arranged on an outer periphery of the iron core member, and a non-magnetic metallic pipe applied, under pressure, over outer peripheries of arcuate magnets. Each of the arcuate magnets is formed with chamfering on one end portion on its outer circumferential face in an axial direction, and the chamfering is small at its central portion, and becomes larger towards opposite sides in a widthwise direction of the arcuate magnet.