(19)

(11)

EP 2 480 374 A1

(12)

(43) Date of publication: 01.08.2012 Bulletin 2012/31 (21) Application number: 10768104.1 (22) Date of filing: 23.09.2010

(51) International Patent Classification (IPC):  B24B 3/02(2006.01) B24B 41/04(2006.01) (86) International application number: PCT/US2010/049963 (87) International publication number: WO 2011/038093 (31.03.2011 Gazette 2011/13)

(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 SE SI SK SM TR (30) Priority: 24.09.2009 US 245309 P (71) Applicant: Gleason Cutting Tools Corporation Loves Park IL 61111 (US)	(72) Inventors: HACKMAN, Roger, L. Winnegago IL 61088 (US) MARTIN, Wayne Roscoe IL 61073 (US) RITCHIE, Mark, A. Machesney Park IL 61115 (US) (74) Representative: Leinweber & Zimmermann  Rosental 7, II. Aufgang 80331 München 80331 München (DE)