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. 08, 2011
Filed:
Jan. 24, 2005
Edward F. Pietraszkiewicz, Southington, CT (US);
Kevin J. Klinefelter, Uncasville, CT (US);
Atul Kohli, Tolland, CT (US);
Todd R. Coons, Gilbert, AZ (US);
Edward F. Pietraszkiewicz, Southington, CT (US);
Kevin J. Klinefelter, Uncasville, CT (US);
Atul Kohli, Tolland, CT (US);
Todd R. Coons, Gilbert, AZ (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
The diffusion opening in the cooling hole of an airfoil is formed by an EDM process in which the outwardly flaring sidewalls of the opening, rather then having surfaces that are approximated to be smooth by having many small ribs formed therein, are formed with relatively few ribs with both longitudinally extending and radially extending surfaces that are substantially greater in dimension than those as normally formed. In this manner, the machining process is simplified and expedited, while at the same time, the cooling efficiency is increased.