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:
Jun. 29, 2021
Filed:
May. 23, 2019
Borgwarner Inc., Auburn Hills, MI (US);
Michael D. Bradfield, Anderson, IN (US);
BorgWarner Inc., Auburn Hills, MI (US);
Abstract
A pole piece () for a rotor () of a rotary electric machine () includes a hub portion () and a plurality of pole segments () distributed evenly about the hub portion (). The pole segments each have a base () that is connected to the hub portion () and a tip () that is disposed axially opposite the base () along an axis () of the pole piece (). Each pole segment () defines circumferentially opposite side surfaces () that extend between the base () and the tip (). Each pole segment () also defines radially opposite outer and inner surfaces () that extend between the side surfaces (). A groove is recessed in the side surfaces () of each pole segment (). A radially innermost portion () of the groove () is arranged proximate to the radially outer surface.