Method for the safe control of doors of a railroad transport train and device for its implementation
CA 2027205 A1 · Owner: Demarais, Gerard · Inventors: Demarais, Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Company known as :, FAIVELEY TRANSPORT "Method for the safe control of doors, of a railroad transport train and device for its implementation", (An invention of Gérard DEMARAIS) The method for the safe control of doors of a railroad train comprising several cars ( R1 R2, R3 ) com-, prises a sequence of the following steps initiated by an operator from any one of the cars:, - command authorization initiated after the, train has stopped - command for opening a specified portion of all of said doors, - command for closing said doors and - transmission to a driver situated at the front of the train of a selective authorization for the moving off of the train after execution of a prior step for …
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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 October 10, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2012.
- 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
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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.