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. 28, 1987
Filed:
Apr. 26, 1982
Applicant:
Inventors:
Daniel J MacDonald, Brookfield, WI (US);
Thomas H Jones, Wauwatosa, WI (US);
Assignee:
MagneTek, Inc., Encino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310105 ;
Abstract
An eddy current coupling has a field coil (42) for magnetically coupling an inductor drum (26) and rotor (28). The thickness of the supporting arm (48) for the coil increases in a step-wise manner in a direction away from the end of the arm. The diameter of the adjacent portions (30) of the rotor is reduced in a corresponding manner to provide a plurality of air gaps (54a, 54b, 54c) across which the flux passes in radial directions. The flux passage and heat removal characteristics of the coupling are enhanced.