(19)

(11)

EP 3 516 114 A1

(12)

(43) Date of publication: 31.07.2019 Bulletin 2019/31 (21) Application number: 17771567.9 (22) Date of filing: 19.09.2017

(51) International Patent Classification (IPC):  E01B 27/02(2006.01) E01B 29/16(2006.01) (86) International application number: PCT/GB2017/052780 (87) International publication number: WO 2018/055349 (29.03.2018 Gazette 2018/13)

(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 RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 22.09.2016 GB 201616130 (71) Applicant: W & D McCulloch Ltd. Ballantrae, Ayrshire KA26 0NB (GB)	(72) Inventor: MCCULLOCH, William Francis Ballantrae Ayrshire KA26 0NB (GB) (74) Representative: Murgitroyd & Company  Scotland House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)