Automatic transmission for electric bicycle
CA 2356932 A1 · Owner: Hong, Seok-Gi · Inventors: Hong, Seok-Gi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There are provided an automatic transmission for an electric bicycle comprising a mechanical gear shifting means and an electronic gear shifting means for mechanically and electronically shifting an output of the motor according to a magnitude of friction force between the wheel and ground and transferring the shifted output of the motor to the driving member; a moving housing in which the motor, the driving member the power transmitting means, the mechanical and electric gear shifting means are mounted; a fixed housing which is fixedly disposed at an outer side of the moving housing; and a first rotational shaft which penetrates through the driving member the moving , housing, and …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 11, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 11, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 11, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.