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:
Jun. 29, 2010
Filed:
Nov. 05, 2004
Mitsuhiro Yamashita, Tokyo, JP;
Takashi Nagasaka, Tokyo, JP;
Hideki Miura, Tokyo, JP;
Yasuhiro Matsukawa, Tokyo, JP;
Kazuo Sato, Tokyo, JP;
Akira Sato, Tokyo, JP;
Hironori Sato, Tokyo, JP;
Takayuki Ito, Tokyo, JP;
Yasuhiko Kitajima, Tokyo, JP;
Mitsuhiro Yamashita, Tokyo, JP;
Takashi Nagasaka, Tokyo, JP;
Hideki Miura, Tokyo, JP;
Yasuhiro Matsukawa, Tokyo, JP;
Kazuo Sato, Tokyo, JP;
Akira Sato, Tokyo, JP;
Hironori Sato, Tokyo, JP;
Takayuki Ito, Tokyo, JP;
Yasuhiko Kitajima, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A coil apparatus having a divided winding conformation and a manufacturing method of the coil apparatus which can prevent a winding from collapsing while achieving a reduction in size of a core and simplification of a structure. A coil apparatus includes a ferrite core and a coil provided around the core. The coil includes at least a first coil portion and a second coil portion, and a boundary end surface of the first coil portion on the second coil portion side is inclined in such a manner that its inner peripheral side is closer to the second coil portion than its outer peripheral side. Further, a boundary end surface of the second coil portion on the first coil portion side is inclined in such a manner that its outer peripheral side is closer to the first coil portion than its inner peripheral side.