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:
Feb. 07, 2017
Filed:
Dec. 28, 2012
United Technologies Corporation, Hartford, CT (US);
James M. Koonankeil, Marlborough, CT (US);
Edward F. Pietraszkiewicz, Southington, CT (US);
Karl A. Schachtner, Marlborough, CT (US);
Kevin J. Klinefelter, Uncasville, CT (US);
Markus W. Fritch, Manchester, CT (US);
Jason Daley, East Hartford, CT (US);
UNITED TECHNOLOGIES CORPORATION, Farmington, CT (US);
Abstract
A method of machining cooling holes in a component includes the steps of inserting an electro discharge machining guide that houses an electrode into an internal cavity of a component, and machining a cooling hole into a wall of the component with the electrode. A gas turbine engine component includes first and second spaced apart walls providing an internal cavity. The first wall has outer and inner surfaces. The inner surface faces the internal cavity. A cooling hole extends through the first wall from the inner surface to the outer surface. The cooling hole includes entry and exit openings respectively provided in the inner and outer surfaces. The exit opening includes a cross-sectional area that is smaller than a cross-sectional area of the entry opening.