(19)

(11)

EP 1 940 587 A2

(12)

(88) Date of publication A3: 04.10.2007 (43) Date of publication: 09.07.2008 Bulletin 2008/28 (21) Application number: 06817260.0 (22) Date of filing: 19.10.2006

(51) International Patent Classification (IPC):  B24B 9/00(2006.01) (86) International application number: PCT/US2006/041166 (87) International publication number: WO 2007/047996 (26.04.2007 Gazette 2007/17)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 19.10.2005 US 728126 P 18.10.2006 US 582711 (71) Applicant: TBW Industries Inc. Furlong, PA 18925 (US)	(72) Inventor: BENNER, Stephen, J. Lansdale, PA 19446 (US) (74) Representative: Miller, James Lionel Woolverton et al Kilburn & Strode, 20 Red Lion Street London WC1R 4PJ London WC1R 4PJ (GB)