Manufacturing process of ceramic refractory cores for turbine engine blades
CA 2527837 C · Owner: Prigent, Serge · Inventors: Defrocourt, Christian; Prigent, Serge
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method of manufacturing a cast ceramic core (10) comprising at least one recess particularly for partitions, for a turbomachine blade in particular comprising the shaping in a mould of a mixture containing a ceramic particles filler and an organic binder extraction of the core from the mould, removal of the binder and a heat treatment to consolidate the core. The method is characterized in that a core (10) rough casting without the said recess is formed in the said mould and in that the said recess is machined 10AB 10BC, 10CD, 10DE, 10EF, 10FG) once the rough casting has been extracted from the mould and before the heat treatment operation. In particular the …
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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 November 25, 2005 and granted August 14, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 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.