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:
Nov. 04, 1997
Filed:
Feb. 02, 1996
Shih-Chou Chen, Hsinchu, TW;
Tung-Chuan Wu, Hsinchu, TW;
Chen-Sheng Weng, Hsinchu Hsien, TW;
Ray-Ten Chen, Tsupei, TW;
Chang-Chun Chen, Chia-Yi, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
An improved swinging type generator for use in automatic wrist watches is disclosed. It contains: (a) a base with a center shaft hole, (b) a stator mounted on the base containing at least one layer of ring-shaped coil plate having at least one periodic-wave-shaped induction coil arranged on and along a circumference of the ring-shaped coil plate; (c) an unbalanced-and-weighted swinging magnetic rotor having a central rotary shape. The rotary shaft is mounted in the shaft hole of the base, and the unbalanced-and-weighted swinging magnetic rotor includes a magnetic ring having a plurality of magnets arranged in a head-to-tail manner along a circumference of the magnetic ring. In a preferred embodiment the induction coil has the shape of a multiple-cycle square-wave, and the angle of the square wave equals the magnetic angle, which is the angle formed between half of the arc length of an individual magnet of the magnetic ring and the center of the shaft hole, so as to maximize the electro-motive force that can be generated.