Hydraulic control system of an automatic transmission for a vehicle and a shifting control method thereof
CA 2213006 A1 · Owner: Hyundai Motor Company · Inventors: Jang, Jaeduk
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a hydraulic control system of an automatic transmission for a vehicle which includes a pressure regulator for regulating hydraulic pressure created by an oil pump, manual and automatic shift controllers for forming a shift mode according to a position of a shift selection lever, a hydraulic controller for controlling shift quality and shift response to smoothly change transmission speeds when shifting, and a hydraulic pressure distributor and release mechanism which distributes an appropriate amount of hydraulic pressure to and releases pressure from each of the friction elements in the automatic transmission, wherein the hydraulic distribution and release means has a 2-4/3-4 …
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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 13, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 13, 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.