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. 25, 2020
Filed:
Mar. 30, 2017
Ford Global Technologies, Llc, Dearborn, MI (US);
Wei Xu, Canton, MI (US);
Zhichun Ma, Ann Arbor, MI (US);
Shuzhen Liu, Novi, MI (US);
Jiyao Wang, Canton, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
An electric motor/generator includes a stator-core enclosing a rotor-core, which are each formed from stacked annular laminates. The stator-core laminates are configured to reduce vibration, and each have teeth extending radially inward from a root of an annular stator yoke/back-iron, to a flux-cap. Each tooth is formed to have opposite, lateral-edges spaced a distance-apart that changes between the root to the flux-cap, to establish a variable tooth-stiffness and a predetermined mechanical-resonance of the tooth. The opposite lateral-edges may each be configured with either a linear or a non-linear, curved edge-profile, and to have the variable tooth-stiffness and the lateral-edge distance-apart changing or decreasing between the root and the flux-cap. Each tooth may also have an edge-profile that is different from at least one adjacent tooth, and which is configured with a variable tooth-stiffness and a predetermined mechanical resonance that is different from the at least one adjacent tooth.