Control of a personal transporter
CA 2425148 C · Owner: Yundt, George B. · Inventors: Field, J. Douglas; Heinzmann, John David; Kamen, Dean L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods for controlling a motorized balancing transporter that has two wheels in contact with the ground in normal operation. Upon detection of a fault condition, a control variable is adjusted at a specified increment in the direction of a goal value until the control variable equals the goal value. A user is afforded accelerated access to operation of the balancing transporter by first initializing a single-axis stabilizer and, while intializing a 3-, axis stabilizer allowing operation of the transporter, and then completing initialization of the 3-axis stabilizer. Traction is maintained between wheels of a transporter and an underlying surface by comparing acceleration of a wheel …
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 October 11, 2001 and granted September 20, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 11, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 11, 2023.
- 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.