(19)

(11)

EP 2 097 218 A2

(12)

(88) Date of publication A3: 18.09.2008 (43) Date of publication: 09.09.2009 Bulletin 2009/37 (21) Application number: 07867765.5 (22) Date of filing: 14.12.2007

(51) International Patent Classification (IPC):  B24B 7/00(2006.01) (86) International application number: PCT/US2007/025626 (87) International publication number: WO 2008/076366 (26.06.2008 Gazette 2008/26)

(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 MT NL PL PT RO SE SI SK TR (30) Priority: 15.12.2006 US 875094 P (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 LLP 20 Red Lion Street London WC1R 4PJ London WC1R 4PJ (GB)