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.

Date of Patent:
Aug. 10, 1976

Filed:

Jan. 20, 1975
Applicant:
Inventors:

Henri Fehr, Montmorency, FR;

Raymond Lucien Carriere, deceased, LATE OF Paris, FR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310103 ;
Abstract

The coupling is constructed for synchronous as well as asynchronous operation. To this end, the driving rotor and driven rotor are each provided with tooth-like poles and the poles of one rotor are spaced apart to cover only a part of the rotational surface of the rotor. The remaining part of the rotational surface is covered by smooth electrically-conductive layers. A circumferential band may also be disposed about or within a rotor in facing relation to the poles of the other rotor while being of smaller width than the air gap between the two rotors. For increased asynchronous operation, conductor rods are disposed between the poles of the rotors.


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