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:
Feb. 02, 2021
Filed:
Mar. 20, 2018
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02K 15/02 (2006.01); H02K 15/03 (2006.01); C21D 8/12 (2006.01); B21D 28/22 (2006.01); C21D 1/04 (2006.01); H02K 1/16 (2006.01); H02K 1/27 (2006.01); C21D 1/42 (2006.01); H01F 1/153 (2006.01); H01F 1/147 (2006.01);
U.S. Cl.
CPC ...
H02K 15/024 (2013.01); B21D 28/22 (2013.01); C21D 1/04 (2013.01); C21D 1/42 (2013.01); C21D 8/1294 (2013.01); H02K 1/16 (2013.01); H02K 1/274 (2013.01); H02K 15/03 (2013.01); H01F 1/14775 (2013.01); H01F 1/15333 (2013.01);
Abstract
A method of manufacturing a stator is provided. The method may include stamping steel into laminations each having an inner edge area defining a residual stress associated with a magnetic permeability. The method may also include exposing the laminations to a changing magnetic field such that, for each of the laminations, a density of resulting eddy currents is greatest near the inner edge area to heat the same relative to central areas of the lamination to decrease the residual stress and core loss.