Vane assembly with improved vane roots
CA 2622017 C · Owner: Pratt & Whitney Canada Corp. · Inventors: Denis, David; Barnett, Barry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vane (30) for a vane assembly (20) of a gas turbine engine (10) includes a vane root (32) connected to the airfoil portion (36) opposite a tip (34) thereof. The vane root includes a platform (46) and a button portion (58) interconnecting the platform and the airfoil portion. The button portion has relatively blunt leading and trailing ends (62,64) which respectively protrude beyond leading and trailing edges (38,40) of the airfoil portion. The vanes are inserted into a series of openings (74) in a turbine casing (24) with a , grommet (66) sealingly interposed between the button portion and the openings. During a foreign object damage event, a vane which is hit will move rearward …
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 September 12, 2006 and granted April 23, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 12, 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.