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. 16, 2012
Filed:
Apr. 20, 2010
Thomas M. Bourquin, Peters, MO (US);
Samuel E. Mayberry, Troy, MO (US);
John H. Hussey, St. Louis, MO (US);
Alan D. Crapo, Florissant, MO (US);
Thomas M. Bourquin, Peters, MO (US);
Samuel E. Mayberry, Troy, MO (US);
John H. Hussey, St. Louis, MO (US);
Alan D. Crapo, Florissant, MO (US);
Nidec Motor Corporation, St. Louis, MO (US);
Abstract
An electric induction motor assembly includes a rotor assembly and a stator assembly. The rotor assembly includes an exposed bar rotor comprising a plurality of axially stacked, punched-to-size rotor laminations. The stator assembly includes a plurality of axially stacked, punched-to-size stator laminations. Each of the laminations presents an axial thickness of less than 0.024 inches. The rotor assembly and the stator assembly cooperatively define a radially extending air gap between a radially outer periphery of the rotor assembly and a radially inner periphery of the stator assembly that is less that 0.012 inches.