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:
Apr. 09, 2013
Filed:
Feb. 17, 2011
Masayoshi Saichi, Kyoto, JP;
Kazuhiko Fukushima, Kyoto, JP;
Hironori Ando, Kyoto, JP;
Kazushi Miura, Kyoto, JP;
Katsuya Takahashi, Kyoto, JP;
Takehito Tamaoka, Kyoto, JP;
Jonathan M. Garbarino, San Jose, CA (US);
Robert N. Lion, Redwood City, CA (US);
Masayoshi Saichi, Kyoto, JP;
Kazuhiko Fukushima, Kyoto, JP;
Hironori Ando, Kyoto, JP;
Kazushi Miura, Kyoto, JP;
Katsuya Takahashi, Kyoto, JP;
Takehito Tamaoka, Kyoto, JP;
Jonathan M. Garbarino, San Jose, CA (US);
Robert N. Lion, Redwood City, CA (US);
Nidec Corporation, Kyoto, JP;
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A spindle motor includes a base portion, a rotor hub, a stator, and a circuit board. The base portion preferably includes a through hole and is arranged to spread out radially around a central axis. The rotor hub is arranged above the base portion to rotate about the central axis. The stator is arranged above the base portion, and includes coils each including at least one lead wire. The circuit board is arranged radially outward of the through hole, and arranged on a lower surface of the base portion. The base portion includes a communicating groove arranged to join the through hole and the circuit board to each other. The at least one lead wire of the coils is arranged to pass inside the through hole and the communicating groove to be electrically connected to the circuit board. The through hole is sealed with a sealant.