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. 04, 2013
Filed:
Oct. 09, 2009
Eugene Y. Ivanov, Grove City, OH (US);
Erich Theado, Columbus, OH (US);
David B. Smathers, Columbus, OH (US);
Eugene Y. Ivanov, Grove City, OH (US);
Erich Theado, Columbus, OH (US);
David B. Smathers, Columbus, OH (US);
Tosoh SMD, Inc., Grove City, OH (US);
Abstract
A method of making metal target blank using circular groove pressing includes pressing a metal or metal alloy target blank in a first circular grooved pressing die set into a first concentric corrugated shape while maintaining an original diameter of the target blank to create concentric rings of shear deformation in the target blank. Forces are then applied to the concentric corrugated target blank sufficient to substantially flatten the target blank with a flat die set while maintaining the original diameter of the target blank to restore the target blank to a substantially flat condition. The target blank is pressed in a second circular grooved die set into a second concentric corrugated shape while maintaining the original diameter of the target blank, wherein the second die set has a groove pattern offset from a groove pattern of the first die set so as to create concentric rings of shear deformation in areas of the target blank which were not previously deformed. Forces are again applied to the concentric corrugated target blank sufficient to substantially flatten the target blank with a flat die set while maintaining the original diameter of the target blank to restore the target blank to a substantially flat condition.