US Patent 7939135 Method of shielding and coating an airfoil

Patent 7939135 was granted and assigned to United Technologies on May, 2011 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

United Technologies

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7939135

Date of Patent

May 10, 2011

Patent Application Number

12326292

Date Filed

December 2, 2008

Patent Citations Received

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US Patent 11933188 Method of manufacturing gas turbine engine element having at least one elongated opening

Patent Primary Examiner

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Frederick J Parker

Patent abstract

A gas turbine engine is used for power generation or propulsion and includes vanes. Each vane includes a trailing edge having a curvature and cooling slots that cool the vane. A photochemical edge shield includes an edge and projections that project from the edge. Before coating the vane, the photochemical edge shield is positioned on the vane such that each of the projections is received in one of the cooling slots. A ceramic coating is then applied to the vane. The photochemical edge shield prevents the ceramic coating from entering and clogging the cooling slots of the vane during the ceramic coating process.