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. 10, 2006
Filed:
Aug. 01, 2005
Takae Matsuda, Kitasaku-Gun, JP;
Takashi Toda, Kitasaku-Gun, JP;
Noriyuki Yoshimura, Kitasaku-Gun, JP;
Takae Matsuda, Kitasaku-Gun, JP;
Takashi Toda, Kitasaku-Gun, JP;
Noriyuki Yoshimura, Kitasaku-Gun, JP;
Minebea Co., Ltd., Nagano, JP;
Abstract
A stepping motor stator stack and rotor stack finishing method whereby the burrs remaining on the small tooth surfaces of the stacks can be eliminated and prevented from lodging in the spaces between laminations of a plurality of stacked steel plates, without causing dulling of these small teeth. After abrasive finishing is carried out, a high pressure liquid jet spray nozzle is introduced into the central cylindrical cavity of a stator stack, and while the nozzle is moved along the central axis of the central cylindrical cavity and rotated relatively centered on the central axis of the central cylindrical cavity, the high pressure liquid jet is sprayed from the jet orifices striking the small tooth surfaces of the stator stack facing the central cylindrical cavity so as to remove the burrs remaining on the small tooth surfaces.