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:
Nov. 30, 2021
Filed:
Jan. 29, 2019
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventor:
Cyrille Goldstein, Ferndale, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/32 (2006.01); H02K 1/27 (2006.01); H02K 29/03 (2006.01); B60K 6/26 (2007.10); B60K 6/36 (2007.10); B60K 6/40 (2007.10);
U.S. Cl.
CPC ...
H02K 1/276 (2013.01); H02K 1/32 (2013.01); B60K 6/26 (2013.01); B60K 6/36 (2013.01); B60K 6/40 (2013.01); B60Y 2200/92 (2013.01); B60Y 2306/05 (2013.01); B60Y 2400/60 (2013.01); H02K 29/03 (2013.01);
Abstract
The rotor of a permanent magnet motor includes a stack of laminations. Each lamination is located with respect to a shaft using a key with a tangential fillet. Each lamination also includes a set of lightening holes having a shape designed to minimize hoop stresses and thereby increase the maximum permissible operating speed of the motor. Furthermore, the tightening holes are aligned with the key to minimize interactions of the respective stress concentrations.