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. 12, 2016
Filed:
Apr. 05, 2011
Yoshinobu Honkura, Tokai, JP;
Hironari Mitarai, Tokai, JP;
Hiroshi Matsuoka, Tokai, JP;
Masayuki Kato, Tokai, JP;
Ikuzou Okumura, Tokai, JP;
Yoshinobu Honkura, Tokai, JP;
Hironari Mitarai, Tokai, JP;
Hiroshi Matsuoka, Tokai, JP;
Masayuki Kato, Tokai, JP;
Ikuzou Okumura, Tokai, JP;
AICHI STEEL CORPORATION, Aichi, JP;
Abstract
A production method for a case-integrated bonded magnet includes: filling a tubular cavity with a magnet raw material that includes a rare-earth magnet powder and a thermosetting resin binder; heating the magnet raw material to cause the thermosetting resin softened or melted while compressively molding the magnet raw material to obtain a tubular compact; discharging the tubular compact from the tubular cavity while press-fitting the tubular compact into a metal tubular case having an inner peripheral surface coaxial with the tubular cavity; and heat-curing the tubular compact with the tubular case to cure the thermosetting resin. The tubular compact press-fitted into the tubular case is thermally cured thereby causing the tubular compact to transform to a tubular bonded magnet, which expands unexpectedly due to heat.