Electrically assisted vehicle
CA 2189203 C · Owner: Sagara, Hiroaki · Inventors: Matsumoto, Toshihiro; Tanaka, Tatsuaki; Sagara, Hiroaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrically assisted vehicle includes a vehicle main body having a driving wheel a human drive system having a driving force applying part to which a human driving force for driving the driving wheel is applied and a torque detecting part for detecting the human driving force applied to the driving force applying part and an electric drive system having a motor a control part for controlling the motor and a battery for power supply wherein the motor has an electric driving force characteristic such that it outputs the electric driving force only at speeds lower than a predetermined speed and the control part of the electric drive system controls the motor with a predetermined ratio on …
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 30, 1996 and granted April 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 30, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 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.