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:
Jul. 20, 2010
Filed:
Sep. 16, 2005
Kazuhiro Hirose, Itami, JP;
Haruhisa Toyoda, Itami, JP;
Atsushi Sato, Osaka, JP;
Takao Nishioka, Itami, JP;
Yasuhiro Endo, Okazaki, JP;
Ryoji Mizutani, Aichi, JP;
Kazutaka Tatematsu, Toyota, JP;
Kenji Harada, Aichi, JP;
Kazuhiro Hirose, Itami, JP;
Haruhisa Toyoda, Itami, JP;
Atsushi Sato, Osaka, JP;
Takao Nishioka, Itami, JP;
Yasuhiro Endo, Okazaki, JP;
Ryoji Mizutani, Aichi, JP;
Kazutaka Tatematsu, Toyota, JP;
Kenji Harada, Aichi, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
A method for producing a dust core compact includes the steps of forming a compact component by pressure-forming a soft magnetic powder having an average particle diameter Da under a pressure Pa, and forming a compact by pressure-forming a soft magnetic powder having an average particle diameter Db and the compact component under a pressure Pb. Average particle diameters Da and Db of the soft magnetic powders satisfy relationship Da/Db≧2, and pressures Pa and Pb applied during the pressure-forming satisfy relationship Pa/Pb≦½. With this structure, a method for producing a dust core compact exhibiting a high strength and capable of being fabricated even when it has a complex shape, and the dust core compact can be provided.