Railway vehicle wheel and related rail truck
CA 2484766 C · Owner: Alstom Transport Sa · Inventors: Nast, Jean-Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This wheel (2), intended to be used on a rail featuring an angle of inclination of 1/20 includes a running zone (8) intended to come into contact with the rail a lateral flange (12) protruding radially outwards in relation to the tread strip (6) as well as a portion of linkage (14) presenting conicity which continuously increases in the direction of the flange (12). The running zone (8) features in cross-section, a straight section (8A) where the conicity is between 0.052 and 0.058 which ensures the rail truck is adequately self-centering.
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 November 10, 2004 and granted May 21, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.