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:
Jun. 01, 1993
Filed:
May. 12, 1992
Applicant:
Inventors:
Yasuaki Nakazawa, Isesaki, JP;
Masashi Fukui, Ashikaga, JP;
Hirohiko Maekawa, Yabuzukahon, JP;
Takayoshi Sakamoto, Tatehayashi, JP;
Assignee:
Mitsuba Electric Manufacturing Co., Ltd., Kiryu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 89 ; 310154 ;
Abstract
A casing of a motor is rendered light and also capable of forming a magnetic circuit in cooperation with a permanent magnet. The casing consists of an outer cylinder and an end bracket each being made of aluminum. An inner cylinder, made of iron and carrying a permanent magnet fixed to the inner peripheral surface thereof, is integrally fitted on the inner peripheral surface of a cylindrical portion of the outer cylinder which is sealed by the end bracket.