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:
Aug. 25, 2015
Filed:
Jan. 25, 2013
Johnson Electric S.a., Murten, CH;
Gian Carlo Magnetti, Asti, IT;
Daniele Paolo Dal Colle, Asti, IT;
Johnson Electric S.A., Murten, CH;
Abstract
A DC electric motor has a stack of laminations defining a rotor with at least two pairs of poles and an even number of slots at least equal to 8. The rotor also has a commutator with an even number of segments and a closed distributed rotor winding. The winding extends in the slots and is connected in a predetermined manner to the segments of the commutator. The rotor winding has a winding section of the lap type, connected to two consecutive segments of the commutator and, in series with this, a plurality of winding sections of the wave type. These winding sections all span an identical number of slots.