06359254 is referenced by 79 patents.

The present invention is a more efficient method for manufacturing shaped holes, which include a diffuser section and a cylindrical meter section. Unlike electro-discharge machining (EDM), which is the current method for manufacturing shaped holes, the method of the present invention laser drills the diffuser section followed by the cylindrical meter section. Laser drilling the cylindrical meter section creates the formation of re-solidified vapor in the diffuser section, which is easily milled. Recognizing that it is much easier to mill re-solidified vapor compared to the parent material, the present invention first creates the diffuser section and allows re-solidified vapor to form therein. Although the re-solidified vapor is thereafter milled, the entire process of the present invention is a more efficient method for producing shaped holes in comparison to EDM.

Title
Method for producing shaped hole in a structure
Application Number
9/408695
Publication Number
6359254 (B1)
Application Date
September 30, 1999
Publication Date
March 19, 2002
Inventor
Robert T Brown
Bolton
CT, US
Assignee
United Technologies Corporation
CT, US
IPC
B23K 26/00
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