Turbine stator for a turbojet, and method of manufacture
CA 2017263 C · Owner: Societe Nationale D'Etude Et De Construction De Moteurs D'Aviation "Snec Ma" · Inventors: Letanter, Gerard; Fouillot, Jacques G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The stator is made of ceramic matrix composite material and comprises: a bladed hub carrying blades with a radially projecting finger at the end of each blade; and two toothed rings having teeth facing one another with the rings being urged towards each other in order to hold each tenon of a blade both axially and circumferentially between a flank of one of the teeth of one of the rings and a flank of one of the teeth of the other ring. The rings are urged towards each other by resilient means which enable them to move apart from each other with the two rings also rotating relative to each other under the effect of the blade tenons expanding with the stator being , fixed to the casing of a …
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 May 22, 1990 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 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
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.