The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 1998
Filed:
May. 17, 1996
Bhupendra K Gupta, Cincinnati, OH (US);
Robert P Ziegler, Montgomery, OH (US);
Wilbur D Scheidt, Cincinnati, OH (US);
General Electric Company, Cincinnati, OH (US);
Abstract
A fluid cooled article having a protective coating on a surface, for example an air cooled gas turbine engine article having a Thermal Barrier Coating, includes through an article wall a fluid cooling passage, and typically a plurality of passages, having openings sized to maintain desired fluid flow, unobstructed by coating within the passage at an exit opening. The passage has a first or inlet opening, which establishes the amount of fluid flow through the passage, and a second opening through which the flow exits the passage through a wall surface on which the coating is deposited. A method for making the article to have such unobstructed flow includes selecting a cross sectional area for the first opening, selecting a coating method for deposit of the coating, in a selected thickness range, on the wall surface and partially within the passage at the second opening, and generating the passage to have a second opening with a cross sectional area greater than that of the first opening by an amount which is no less than a reduction in cross sectional area resulting from partial deposit of the coating through the second opening.