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. 07, 2012
Filed:
May. 19, 2009
Shinya Tabata, Kyoto, JP;
Tadaaki Fujinaga, Kyoto, JP;
Yoshitaka Hiraishi, Kyoto, JP;
Hideaki Uchise, Kyoto, JP;
Takashi Tsukada, Kyoto, JP;
Shinya Tabata, Kyoto, JP;
Tadaaki Fujinaga, Kyoto, JP;
Yoshitaka Hiraishi, Kyoto, JP;
Hideaki Uchise, Kyoto, JP;
Takashi Tsukada, Kyoto, JP;
Nidec Corporation, Kyoto, JP;
Abstract
A rotor yoke includes a substantially flat or annular flat cover portion coaxial or substantially coaxial with a rotational axis and a substantially cylindrical side wall portion extending from an outer circumference of the cover portion in a parallel or substantially parallel relationship with the rotational axis. The rotor yoke further includes a substantially annular flange portion extending radially outwards from an open end of the side wall portion. The cover portion and the side wall portion define a cup portion whose center of gravity deviates from the rotational axis in a plane perpendicular or substantially perpendicular to the rotational axis, and the flange portion has an outer circumferential circle whose center deviates from the rotational axis in a direction opposite to the deviation direction of the center of gravity of the cup portion.