(19)

(11)

EP 0 571 561 A1

(12)

(43) Date of publication: 01.12.1993 Bulletin 1993/48 (21) Application number: 92909698.0 (22) Date of filing: 22.05.1992

(51) International Patent Classification (IPC):  E04H 12/ 32( . ) G09F 17/ 00( . ) (86) International application number: PCT/NO1992/000095 (87) International publication number: WO 1992/021842 (10.12.1992 Gazette 1992/31)

(84) Designated Contracting States: CH DE GB LI NL SE (30) Priority: 28.05.1991 NO 19910002053 (71) Applicant: JORGENSEN, Arne N-0983 Oslo (NO)	(72) Inventor: JORGENSEN, Arne N-0983 Oslo (NO) (74) Representative: Hynell, Magnus  Hynell Patenttjänst AB, Box 2236 S-683 02 Hagfors S-683 02 Hagfors (SE)