Turbine engine for example a gas turbine engine for an aircraft
CA 2500548 C · Owner: Snecma · Inventors: Marchi, Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A turbine engine including a wheel with hollow blades that are cooled internally by a forced air flow. According to an important characteristic of the invention an annular-hook flange (70) is interposed between the outer edge of the labyrinth-disk (52) and the rotor disk (36) the annular-hook flange comprising a retention shoulder (72) forming an outer annular hook in which the outer edge of the labyrinth-disk is embedded and a support shoulder (74) constituting an inner hook engaged in a groove around the circumference of the rotor disk.
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 March 2, 2005 and granted October 30, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 2, 2025.
- 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.