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:
Mar. 16, 2004
Filed:
Sep. 06, 2001
Takaichi Mabuchi, Matsudo, JP;
Mabuchi Motor Co., Ltd., Matsudo, JP;
Abstract
In a miniature electric motor for generating vibration, an output portion of a rotary shaft is formed into an irregular shape in cross-section other than a circular shape in cross-section. An engaging hole having a predetermined shape in cross-section, which corresponds to the irregular shape in cross-section of the output portion and which makes a vibrator to be kept under a relatively non-rotatable condition to the rotary shaft, is formed in the vibrator. The output portion is engaged with the engaging hole and the vibrator is positioned and held in a thrust direction relative to the output portion to thereby fix the vibrator to the rotary shaft. This motor is used as a vibration generator for a mobile phone and the like.