Gas turbine engine vane assembly repair
CA 2189642 C · Owner: Chromalloy Gas Turbine Corporation · Inventors: Huynh, Lang; Goodwater, Frank; Kang, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process and apparatus are provided for separating components of a brazed vane assembly (1) by preheating the assembly to a temperature below the solidus of the base metal of the vane assembly and above the liquids of the braze then maintaining such temperature, while separating the airfoil (23) from the platform (45) by pulling /pushing the airfoil (23) and platform apart (45).
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 March 20, 1995 and granted November 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2017.
- 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.