Variable-geometry turbine stator blade, particularly for aircraft engines
CA 2436638 C · Owner: Avio S.P.A. · Inventors: Dalle Crode, Domenico; Ciacci, Paolo Lorenzo; Coutandin, Daniele
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A blade for a stator of a variable-geometry turbine particularly for aircraft engines; the blade has an airfoil profile hinged to a structure of the stator to rotate about an axis and having a pressure front wall and a suction rear wall; the blade also has two end walls which are located at opposite ends of the airfoil profile cooperate in sliding manner with the structure of the stator and are cooled, in use, by air flowing through a number of holes; the outlet of the holes are located close to the outer edges between the end walls and the front wall to generate a tangential stream of cooling air by virtue of the pressure difference acting on the front and rear walls.
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 August 5, 2003 and granted August 2, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 5, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 5, 2025.
- 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.