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:
Mar. 16, 2004
Filed:
Sep. 20, 2002
Applicant:
Inventors:
Michael N Wybrow, Nottingham, GB;
Terence S Milward, Nottingham, GB;
Assignee:
Rolls-Royce plc, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 2/638 ;
U.S. Cl.
CPC ...
B23K 2/638 ;
Abstract
A method of producing an angled hole in a workpiece includes the steps of: using a laser beam to produce an initial orifice in the workpiece ; translating the laser beam away from the initial orifice to a starting point at a periphery of the hole to be produced; and moving the laser beam such that it traces an elliptical path on the surface of the workpiece, thus defining the periphery of the hole , whilst maintaining the focus of the laser beam on the workpiece surface. The starting point is located in a region of the edge of the angled hole which meets the surface of the workpiece at an obtuse angle.