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. 28, 2005
Filed:
Oct. 15, 2002
Wayne Charles Hasz, Pownal, VT (US);
Nesim Abuaf, Lincoln, OR (US);
Robert Alan Johnson, Simpsonville, SC (US);
Ching-pang Lee, Cincinnati, OH (US);
Wayne Charles Hasz, Pownal, VT (US);
Nesim Abuaf, Lincoln, OR (US);
Robert Alan Johnson, Simpsonville, SC (US);
Ching-Pang Lee, Cincinnati, OH (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A method of providing turbulation on the inner surface of a passage hole (e.g., a turbine cooling hole) is described. The turbulation is first applied to a substrate which can eventually be inserted into the passage hole. The substrate is often a bar or tube, formed of a sacrificial material. After the turbulation is applied to the substrate, the substrate is inserted into the passage hole. The turbulation material is then fused to the inner surface, using a conventional heating technique. The sacrificial substrate can then be removed from the hole by various techniques. Related articles are also described.