Elliptical rolling track
CA 2185471 C · Owner: Pouliot, Simon · Inventors: Pouliot, Simon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention uses a rolling track consisting of articulated links supported by wheels which roll on an elliptical rail. The rail is elliptical with a curve toward the ground so as to allow only one point of contact with the ground thereby reproducing the movement of the working part of a wheel with respect to any obstacles to be overcome. In this manner only one link at a time is in contact with the ground providing control on friable or slippery terrain. The elliptical rolling track can be used on all types of terrain and in all weather and can be used as a drive system on single-track motorcycles pedal-drive vehicles, wheelchairs, garden vehicles sports and recreational vehicles 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 September 13, 1996 and granted March 24, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 13, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 13, 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.