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:
Sep. 17, 2013
Filed:
Jul. 24, 2007
Xiaolan Ai, Massillon, OH (US);
Richard Knepper, North Canton, OH (US);
Don Remboski, Ann Arbor, MI (US);
Chris Van Dress, Alliance, OH (US);
Brad Mularcik, Copley, OH (US);
Xiaolan Ai, Massillon, OH (US);
Richard Knepper, North Canton, OH (US);
Don Remboski, Ann Arbor, MI (US);
Chris Van Dress, Alliance, OH (US);
Brad Mularcik, Copley, OH (US);
The Timken Company, Canton, OH (US);
Abstract
A mechanical structure () for enabling a rotor () in a permanent magnet electric motor A to be moved axially relative to a stator () under an actuating force, without experiencing frictional sliding during such a movement. As the rotor () is moved away from the stator (), the motor magnetic field is weakened, enabling the motor A to operate efficiently at elevated speeds, extending speed coverage under constant power.