Bullnose step turbine nozzle
CA 2527645 C · Owner: General Electric Company · Inventors: Lee, Ching-Pang; Palmer, Nicholas Charles; Lu, Wenfeng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A turbine airfoil (12) includes opposite pressure and suction sides (18,20) extending in span from a flowpath surface (28). The flowpath surface (28) has chordally opposite forward and aft edges (30,32) and laterally opposite first and second endfaces (34,36) corresponding with the airfoil pressure and suction sides (18,20). The flowpath surface (28) joins the first endface (34) at the forward edge (30) in a forward bullnose (42) and joins the second endface (36) at the aft edge (32) in an aft bullnose (44) with the bullnoses (42,44) varying in radius from the opposite edges (30,32).
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 November 24, 2005 and granted September 23, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 24, 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.