Turbine airfoil with variable and compound fillet
CA 2548168 C · Owner: Guentert, Joseph Michael · Inventors: Bailey, James Robert; Guentert, Joseph Michael; Lee, Ching-Pang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A turbine airfoil may be a rotating blade having a single platform or a stationary nozzle having a pair of platforms. The airfoil body has pressure and suction sidewalk (22 24) extending between leading and trailing edges (14 16). A compound fillet is disposed between the airfoil body and at least one of the platforms. The compound fillet includes a concave first fillet having a first radius and a concave second fillet having a second greater radius. The second fillet extends from the leading edge (14) downstream along the suction sidewall (24) and terminates at a point upstream of the trailing edge (16). The second fillet may also extend downstream from the leading edge (14) along 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 May 25, 2006 and granted April 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 25, 2026.
- 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.