(19)
(11) EP 1 075 585 A1

(12)

(43) Date of publication:
14.02.2001 Bulletin 2001/07

(21) Application number: 99950359.2

(22) Date of filing: 22.04.1999
(51) International Patent Classification (IPC)7E21B 19/15, E21B 19/20, E21B 7/02
(86) International application number:
PCT/SE9900/647
(87) International publication number:
WO 9958/812 (18.11.1999 Gazette 1999/46)
(84) Designated Contracting States:
BE DE DK ES FI FR GB IT NL PT

(30) Priority: 29.04.1998 SE 9801519

(71) Applicant: Hardab Karlstad Aktiebolag
653 50 Karlstad (SE)

(72) Inventor:
  • SJÖBERG, Bo
    S-669 91 Deje (SE)

(74) Representative: Hynell, Magnus 
Hynell Patenttjänst AB,Patron Carls väg 2
683 40 Hagfors/Uddeholm
683 40 Hagfors/Uddeholm (SE)

   


(54) DEVICE RELATING TO A BORING ASSEMBLY