(19)

(11)

EP 1 843 870 A1

(12)

(43) Date of publication: 17.10.2007 Bulletin 2007/42 (21) Application number: 05718384.0 (22) Date of filing: 03.02.2005

(51) International Patent Classification (IPC):  B23F 15/06(2006.01) B23F 23/08(2006.01) B23F 21/02(2006.01) G05B 19/18(2006.01) (86) International application number: PCT/IB2005/000913 (87) International publication number: WO 2006/082470 (10.08.2006 Gazette 2006/32)

(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 MC NL PL PT RO SE SI SK TR (71) Applicants: Fisher, David J. Milton ON L9T 2B5 (CA) Russell, Adrian Richmond Hill ON L4C 7T5 (CA) Folprecht, George Willowdale ON M2J 2K7 (CA) Wheldon, Garth A. Burlington ON L7M 3T7 (CA)	(72) Inventors: Fisher, David J. Milton ON L9T 2B5 (CA) Russell, Adrian Richmond Hill ON L4C 7T5 (CA) Folprecht, George Willowdale ON M2J 2K7 (CA) Wheldon, Garth A. Burlington ON L7M 3T7 (CA) (74) Representative: Brown, David Leslie  HASELTINE LAKE, Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)