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:
Jun. 27, 2000
Filed:
Dec. 21, 1998
Ching-Wen Liu, Changhua, TW;
Pai-Hsiang Hsu, Tainan, TW;
Yann-Jy Yang, Hsinchu, TW;
Caesar Chen, Taipei, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
An electric auxiliary apparatus for a bicycle mainly comprises an electric motor, a gear reduction mechanism, a power combination mechanism, and a pedal force sensing mechanism, wherein the gear reduction mechanism includes a planetary gear assembly, a bevel gear assembly, and two reduction gears; the power combination mechanism comprises two chain-wheel seats, two elastic member seats, two elastic members, and two single-direction clutches, the pedal force sensing mechanism primarily includes a sensing sliding seat, a magnet, a magnetizable member, a restoring spring, and a sensor.