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. 07, 2014
Filed:
Apr. 13, 2011
Satoshi Maekawa, Kawaguchi, JP;
Akira Kurosawa, Saitama-ken, JP;
Satoshi Maekawa, Kawaguchi, JP;
Akira Kurosawa, Saitama-ken, JP;
Canon Denshi Kabushiki Kaisha, Chichibu-shi, JP;
Abstract
A magnetic driver includes a rotor magnet, a coil bobbin around which a coil is wound, and which has a through hole in a central portion, a yoke including a straight portion to be inserted into the through hole, and an arcuate portion connected to a distal end of the straight portion, a support member which rotatably supports the rotor magnet, and a thrust receiving member which includes an engaging portion to be engaged with the support member, has one surface which regulates one end of the rotor magnet in a thrust direction, and the other surface on which the coil bobbin is placed, and is held between the coil bobbin and the arcuate portion of the yoke. The yoke is assembled as an integrated yoke by inserting the straight portion into the through hole, and fixing the straight portion to the arcuate portion as another member.