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:
May. 09, 2000
Filed:
Jul. 21, 1997
Applicant:
Inventors:
Koichi Ohtake, Yokohama, JP;
Tetsuya Hiramatsu, Machida, JP;
Hiroyuki Kato, Yokohama, JP;
Shuichiro Honda, Kawasaki, JP;
Assignee:
Ebara Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 87 ; 310261 ; 310264 ; 310265 ;
Abstract
A canned motor includes a rotor having a rotor core and a rotor can covering an outer circumferential surface of the rotor core, and a stator fixedly disposed around the rotor with a radial gap defined therebetween and having a stator core and a stator can covering an inner circumferential surface of the stator core. The rotor core has at least one groove defined in an outer circumferential surface thereof and extending longitudinally thereof. The rotor can has a portion pressed into the groove and held in intimate contact fully with the outer circumferential surface of the rotor core.