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:
Oct. 24, 2017
Filed:
Apr. 11, 2017
Aichi Steel Corporation, Aichi, JP;
Yoshinobu Honkura, Aichi, JP;
Hironari Mitarai, Aichi, JP;
Hiroshi Matsuoka, Aichi, JP;
Masayuki Kato, Aichi, JP;
Ikuzou Okumura, Aichi, JP;
AICHI STEEL CORPORATION, Aichi, JP;
Abstract
A production method for an anisotropic bonded magnet includes: filling the annular cavity with a magnet raw material including one or more types of rare-earth anisotropic magnet powder and a binder resin; applying aligning magnetic fields to the magnet raw material being aligned in the softened or molten binder resin, the aligning magnetic fields are applied from an even number of aligning magnetic pole bodies arranged around outer periphery of the annular cavity such that directions of magnetic fields are alternated; subjecting the magnet raw material to a molding to form a compact; rotating the aligning magnetic pole bodies in circumferential direction for a predetermined angle; and applying demagnetization magnetic fields to the compact from the aligning magnetic pole bodies during the alignment step. The demagnetization magnetic fields are in directions for cancelling magnetization of the compact caused by the aligning magnetic fields.