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:
Mar. 17, 1987
Filed:
Apr. 08, 1985
Applicant:
Inventors:
Carlo Domenichini, Poggibonsi, IT;
Gaetano Gastaldin, Verona, IT;
Assignee:
Axis S.p.A., , IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ;
U.S. Cl.
CPC ...
324 64 ; 324 62 ; 3241 / ;
Abstract
A method, and apparatus, for determining the resistance of the electrical connections between coils and the bars of a commutator for electric motors as well as the resistance of the coils themselves includes applying appropriate voltages to the commutator bars to simulate a cut in the winding thus permitting determination of the connection resistance independently of the coil resistance. After the connection resistance has been determined, the measurement of an additional voltage permits the determination of the coil resistance.