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. 22, 2017
Filed:
Apr. 17, 2015
The United States of America As Represented BY the Secretary of the Navy, Washington, DC (US);
Nishkamraj U. Deshpande, Novi, MI (US);
Eric Scheid, Bloomington, IN (US);
James E. Schwabe, Bedford, IN (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A method of modifying material properties of a fragmentation device, includes providing a fragmentation device with a first surface, a first section, a second section, a second surface spaced apart from the first surface, a third section, and a fourth section disposed between the first, second, and third sections. The method further includes positioning the fragmentation device within a carbon-rich environment, and absorbing carbon from the carbon-rich environment into the first and second surfaces of the fragmentation device. Additionally, the method further includes increasing a content of carbon at the first and second surfaces of 0.06 wt. % carbon to 1.0 wt. % carbon and maintaining an original content of carbon of 0.01 wt. % carbon to 0.05 wt. % carbon at the fourth section of the fragmentation device by controlling penetration of the carbon into the fourth section.