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:
Jan. 07, 2020
Filed:
Nov. 27, 2017
Institut Vedecom, Versailles, FR;
Tahar Hamiti, Montigny le Bretonneux, FR;
Franck Vangraefschepe, Nanterre, FR;
Raouf Benlamine, Issy-les-Moulineaux, FR;
INSTITUT VEDECOM, Versailles, FR;
Abstract
The present invention concerns a brushless electric machine with a rotor having interior permanent magnets, characterised in that the rotor consists of a tubular core (), said core () having N pairs of longitudinal slots () having trapezoidal cross-section, a width Land a length L, where L/L is between 0.25 and 0.35, the two slots () of a pair extending on either side of the median radial plane, at an angle of 7.5°±1.5°, the core having, in the region of convergence of each pair of slots, a longitudinal channel () opening on either side of the front ends of the core ().