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:
Aug. 08, 1989
Filed:
Dec. 11, 1987
Applicant:
Inventor:
Herman C Denny, Rural Hall, NC (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H / ; B23H / ;
U.S. Cl.
CPC ...
219 6915 ;
Abstract
An electrode for forming a hole in a metal part by an electrical discharge machining process, the electrode being provided with a longitudinal flushing bore which extends from the free end of the electrode in the direction of the electrode longitudinal axis and is spaced laterally from the longitudinal axis, at least at the free end, such that electrode material is present on the longitudinal axis at the free end. When a hole is tapped in a metal part by this electrode, the electrode rotates so that no core, or slug, is left in the tapped hole at the end of the machining operation.