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:
Dec. 29, 2015
Filed:
Oct. 17, 2011
Yoshiharu Naito, Tokyo, JP;
Koji Nagata, Tokyo, JP;
Yoshiharu Naito, Tokyo, JP;
Koji Nagata, Tokyo, JP;
MEIDENSHA CORPORATION, Tokyo, JP;
Abstract
A rotor structure for a rotary machine in which a rotor () is securely fastened to the outer periphery of a shaft () and a positioning key is formed on the inner wall of the rotor (), while a key () is formed on the outer periphery of the shaft (), wherein curved sections (R) are formed on the side surfaces on both sides of the positioning key (), thereby reducing stress at the angled sections of the rotor core to a greater extent than positioning keys of the prior art. At the same time, torque can be transmitted over the entire surface of an interference section of the shaft () thereby enabling torque to be reliably transmitted, and a magnetic path of a magnetic protrusion (d-axis) to be ensured. A motor can thus be reduced in size.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile