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(11)

EP 2 688 712 A1

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(43) Date of publication: 29.01.2014 Bulletin 2014/05 (21) Application number: 12760262.1 (22) Date of filing: 20.03.2012

(51) International Patent Classification (IPC):  B24B 7/04(2006.01) (86) International application number: PCT/US2012/029837 (87) International publication number: WO 2012/129244 (27.09.2012 Gazette 2012/39)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 21.03.2011 US 201161454893 P (71) Applicant: Lawrence Livermore National Security, LLC Livermore, CA 94550 (US)

(72) Inventors: SURATWALA, Tayyab I. Livermore California 94550 (US) STEELE, William A. Livermore California 94550 (US) FEIT, Michael D. Livermore California 94550 (US) DESJARDIN, Richard P. Livermore California 94550 (US) MASON, Daniel C. Livermore California 94550 (US) DYLLA-SPEARS, Rebecca J. Livermore California 94550 (US) WONG, Lana L. Livermore California 94550 (US) MILLER, Philip E. Livermore California 94550 (US) GERAGHTY, Paul Livermore California 94550 (US) BUDE, Jeffrey D. Livermore California 94550 (US) (74) Representative: Diehl & Partner GbR  Patentanwälte Erika-Mann-Strasse 9 80636 München 80636 München (DE)