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:
May. 21, 2013
Filed:
Oct. 29, 2012
Nidec Corporation, Kyoto, JP;
Atsushi Yawata, Kyoto, JP;
Yasuhiro Suzuki, Kyoto, JP;
Shintaro Saeki, Kyoto, JP;
Takehito Tamaoka, Kyoto, JP;
Nidec Corporation, Kyoto, JP;
Abstract
A spindle motor includes a stator unit and a rotor unit supported to be rotatable with respect to the stator unit. The stator unit includes a stator, a base portion including a through hole, and a circuit board. The circuit board includes a connection portion to which a conductive wire from the stator is connected after passing through the through hole. A lower surface of the base portion includes a central region, a peripheral region, a recess portion, and a protrusion. A position of a distal portion of the protrusion is provided at a level higher than a level of a lowermost surface region of the central region and lower than a level of a bottom surface of the recess portion in a direction parallel or substantially parallel to a central axis.