Electrically assisted vehicle
CA 2213883 C · Owner: Sanyo Electric Co. Ltd. · Inventors: Sagara, Hiroaki; Tanaka, Tatsuaki; Maeda, Yoshihiko
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 body having a driving wheel driven by human driving power and electric driving power, a driving power applying section for applying the human driving power to drive the driving wheel, a torque detection section to detect the human driving power applied to the driving power applying section a, motor to auxiliarily drive the driving wheel by the electric driving power, a battery to supply power for the motor and, a control section to control the motor according to a result detected by the torque detection section wherein the control, section has a plurality of switchable assist modes relating to an assist ratio of the electric driving power …
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 August 19, 1997 and granted October 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 2019.
- 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.