Vehicle automatic transmission control system
CA 2077096 C · Owner: Hasegawa, Yusuke · Inventors: Sakai, Ichiro; Hasegawa, Yusuke; Iwaki, Yoshihisa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for controlling a multi-step geared or continuously variable automatic transmission in which a gear ratio to be shifted to is determined by retrieving a conventional preestablished shift diagram by an engine load and a vehicle speed. A fuzzy reasoning is carried out using parameters such as a driving resistance to correct the gear ratio obtained by retrieved. Alternatively, the fuzzy reasoning is carried out to correct one of the engine load and vehicle speed detected and using the corrected value the shift, diagram is retrieved to determine a gear ratio to be shifted to. Further, another fuzzy reasoning is carried out to ascertain the driver's intention to decelerate and the first …
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 28, 1992 and granted February 3, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 2014.
- 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.