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:
Oct. 29, 2013
Filed:
Sep. 24, 2010
Gary E. Horst, Manchester, MO (US);
Daniel E. Bailey, Ballwin, MO (US);
Daniel E. Hilton, St. Louis, MO (US);
Gregory M. Levine, St. Louis, MO (US);
L. Ranney Dohogne, Creve Coeur, MO (US);
Gary E. Horst, Manchester, MO (US);
Daniel E. Bailey, Ballwin, MO (US);
Daniel E. Hilton, St. Louis, MO (US);
Gregory M. Levine, St. Louis, MO (US);
L. Ranney Dohogne, Creve Coeur, MO (US);
Nidec Motor Corporation, St. Louis, MO (US);
Abstract
A stator or rotor of an electric motor or generator comprises a core formed of ferromagnetic material having a plurality of teeth arranged circumferentially about an axis. In one aspect of the invention, at least one retaining member connects the end portions of at least two of the teeth to each other in a manner inhibiting relative movement between said tooth end portions. By inhibiting relative movement between said tooth end portions, vibration is reduced. Vibration can also be reduced by welding interior surfaces of a core to each other. Reducing the vibration reduces the noise emissions of the rotor or stator during operation.