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. 15, 2005
Filed:
Nov. 06, 2002
William C. Anderson, Springdale, OH (US);
Edward I. Stamm, Cincinnati, OH (US);
Vicky S. Budinger, Loveland, OH (US);
Terry L. Lievestro, West Chester, OH (US);
William C. Anderson, Springdale, OH (US);
Edward I. Stamm, Cincinnati, OH (US);
Vicky S. Budinger, Loveland, OH (US);
Terry L. Lievestro, West Chester, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
A drive head for a bolt, fastener, coupling, nut or other driveable head made from a less malleable metal such as a powder metal nickel alloy. The drive head has an upper drive portion having at least six convex corners spaced around the outer periphery thereof, each corner terminating in an edge. The drive head also has a lower flange portion adjacent to the drive portion and having an edge extending radially outwardly to at least the edge of each corner. The drive portion and the flange portion of the drive head is formed by subjecting a blank having a generally circular head to electrochemical machining (ECM). A tool is also provided for the ECM method to form the drive portion and flange portion of the drive head.