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:
Feb. 26, 1991
Filed:
Dec. 01, 1989
Applicant:
Inventor:
Georg Strobl, Repulse Bay, HK;
Assignee:
Johnson Electric S.A., La Chaux de Fonds, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ; F16B / ;
U.S. Cl.
CPC ...
310261 ; 310 42 ; 29598 ;
Abstract
A rotor for an electric motor comprises a shaft having a laminated armature stack mounted thereon. A collar is fitted on the shaft at each end of the stack, and an epoxy resin coating coats the stack and bonds the collar to the shaft to fix the stack in position on the shaft. The collar may be formed by a cylinder which is split along its length and has an internal diameter equal to, or slightly less than the shaft diameter, so as to form a space between the shaft and collar and facilitate entry of the epoxy resin.