Automatic gear-shifting bicycle with optimal shift timing
US8977450B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 3, 2012 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Mar 17, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62M9/123
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An automatic gear-shifting bicycle includes: a bicycle body provided with two cranks, two pedals and a derailleur, a power supply module, a microcomputer, a gear shifting control driver, and a pedal position sensor module installed in the bicycle body corresponding to the cranks and electrically coupled to the microcomputer for enabling the microcomputer to determine the angular position and forward/backward pedaling of the cranks. The microcomputer calculates the optimal shift timing subject to the time point the crank to be moved over the pedaling dead point in the next time, the pedaling speed to be below a predetermined speed value or the cranks are been pedaling backwardly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.