Method for preventing closure of cooling holes in hollow air cooled turbine engine components during application of a plasma spray coating
CA 1256753 A · Owner: United Technologies Corporation · Inventors: Sheffler, Keith D.; Radzavich, Thomas J.; Nordstrom, Donald G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method for Preventing Closure of Cooling Holes in Hollow, Air Cooled Turbine Engine Components During Application of a Plasma Spray Coating This invention relates to the application of plasma sprayed coatings to the surface of components which have small holes therein, such as hollow air, cooled blades or vanes used in turbine engines. Coating material is prevented from depositing on the wall surface of the holes by the presence of fugitive plugs in the holes during the coating process. The plugs are removed after the coating has been applied resulting in the holes being open and unobstructed.
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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
- Granted July 4, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 4, 2006.
- 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
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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.