Bicycle front wheel drive
CA 2211209 C · Owner: Chalfant, Wayne Charles · Inventors: Chalfant, Wayne Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A front wheel drive system (10) for a bicycle which can be installed on a bicycle to drive the front wheel by rocking the handlebars back and forth. A chain positioning and support mechanism is attached to the handlebar (18) of a bicycle. The handlebar is attached to a rotatable outer sleeve of a handlebar stem (12). A rocker switch in the outer sleeve selectively locks the handlebar relative to the stem or allows the handlebar to rotate about the stem. A chain (24) attached to the chain positioning and support mechanism engages a freewheel attached to the front hub (14) of a bicycle and terminates in a spring (22) connecting back to the chain positioning and support mechanism.
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 February 9, 1996 and granted June 5, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 9, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 9, 2018.
- 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.