(19)

(11)

EP 1 733 096 A1

(12)

(43) Date of publication: 20.12.2006 Bulletin 2006/51 (21) Application number: 05734048.1 (22) Date of filing: 24.03.2005

(51) International Patent Classification (IPC):  E01B 29/17(2006.01) (86) International application number: PCT/GB2005/001164 (87) International publication number: WO 2005/095716 (13.10.2005 Gazette 2005/41)

(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 (30) Priority: 27.03.2004 GB 0406945 (71) Applicant: W & D McCulloch Craigiemains, Main Street Ballantrae, KA26 0NB (GB)	(72) Inventor: MCCULLOCH, William, Francis Ballantrae KA26 0NB (GB) (74) Representative: Gray, John James  Murgitroyd & Company 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)