(19)

(11)

EP 1 370 729 A1

(12)

(43) Date of publication: 17.12.2003 Bulletin 2003/51 (21) Application number: 02708844.2 (22) Date of filing: 20.03.2002

(51) International Patent Classification (IPC)7: E01B 13/00, E01B 3/00 (86) International application number: PCT/NO0200/115 (87) International publication number: WO 0207/7367 (03.10.2002 Gazette 2002/40)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 23.03.2001 NO 20011489 (71) Applicant: Leiv Eiriksson Nyfotek AS 7462 Trondheim (NO)	(72) Inventors: LÖHREN, Alf, Helge N-7013 Trondheim (NO) NORDAL, Rasmus, S. N-7020 Trondheim (NO) (74) Representative: Dealtry, Brian  Eric Potter Clarkson,Park View House,58 The Ropewalk Nottingham NG1 5DD Nottingham NG1 5DD (GB)