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:
Dec. 28, 1999
Filed:
Jul. 28, 1998
Masayuki Katagiri, Nagano, JP;
Hiromitsu Takei, Nagano, JP;
Kabushiki Kaisha Sankyo Seiki Seisakusho, Nagano, JP;
Abstract
In one face of an annular permanent magnet 20, notch recesses 30 and 31 are formed in diameter directions which are different in phase by 90.degree. and used as positioning recesses 30 and fixing recesses 31. The positioning recesses 30 are positioned with respect to a mounting jig 41 by keys 61 which are similar to a magnetizing head, and fixed in the portions of the fixing recesses 31 by plastic working which is performed on an end face 62 of a case 18 by incision and bend cutters 48. Therefore, both the magnetization and the mounting can be performed by using the same reference, i.e., the positioning recesses 30 of the permanent magnet 20, and hence the accuracy of the magnetized positions can be ensured.