(19)

(11)

EP 2 655 015 A2

(12)

(88) Date of publication A3: 13.12.2012 (43) Date of publication: 30.10.2013 Bulletin 2013/44 (21) Application number: 11832158.7 (22) Date of filing: 20.12.2011

(51) International Patent Classification (IPC):  B24D 18/00(2006.01) B24D 3/34(2006.01) B24D 7/02(2006.01) B24B 53/017(2012.01) B24D 3/06(2006.01) (86) International application number: PCT/US2011/065970 (87) International publication number: WO 2012/088004 (28.06.2012 Gazette 2012/26)

(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: 20.12.2010 US 201061424870 P (71) Applicant: Diamond Innovations, Inc. Worthington, OH 43229 (US)	(72) Inventors: RULAND, Gary, E. Warner Robins GA 31088 (US) RAREY, Charles Lewis Center OH 43035 (US) EASLEY, Thomas, Charles Bexley OH 43209 (US) GRAHAM, James Gahanna OH 43230 (US) SCHWEIZER, Mark Powell OH 43065 (US) (74) Representative: Setréus, Ellen et al Sandvik Intellectual Property AB 811 81 Sandviken 811 81 Sandviken (SE)