(19)

(11)

EP 0 521 006 A1

(12)

(43) Date of publication: 07.01.1993 Bulletin 1993/01 (21) Application number: 91905097.0 (22) Date of filing: 08.03.1991

(51) International Patent Classification (IPC):  E05B 27/ 00( . ) E05B 27/ 04( . ) (86) International application number: PCT/NO1991/000037 (87) International publication number: WO 1991/014064 (19.09.1991 Gazette 1991/22)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI NL SE (30) Priority: 12.03.1990 NO 19900001133 (71) Applicant: PEDERSEN, Kai N-0662 Oslo 6 (NO)	(72) Inventor: PEDERSEN, Kai N-0662 Oslo 6 (NO) (74) Representative: Rackham, Stephen Neil  GILL JENNINGS & EVERY, Broadgate House, 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)