(19)

(11)

EP 2 521 824 A1

(12)

(43) Date of publication: 14.11.2012 Bulletin 2012/46 (21) Application number: 10794949.7 (22) Date of filing: 13.12.2010

(51) International Patent Classification (IPC):  E03F 5/042(2006.01) (86) International application number: PCT/EP2010/069485 (87) International publication number: WO 2011/082970 (14.07.2011 Gazette 2011/28)

(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 (30) Priority: 08.01.2010 GB 201000200 (71) Applicant: Kelmar Limited Douglas Isle of Man IM1 1AF (GB)	(72) Inventor: KELLY, Frank Worcestershire WR9 0PX (GB) (74) Representative: Jackson, Derek Charles  Derek Jackson Associates The Old Yard Lower Town Claines Worcestershire WR3 7RY Lower Town Claines Worcestershire WR3 7RY (GB)