(19)

(11)

EP 0 211 885 A1

(12)

(43) Date of publication: 04.03.1987 Bulletin 1987/10 (21) Application number: 86901146.0 (22) Date of filing: 07.02.1986

(51) International Patent Classification (IPC):  G08B 17/ 10( . ) G08B 17/ 11( . ) (86) International application number: PCT/NO1986/000013 (87) International publication number: WO 1986/004708 (14.08.1986 Gazette 1986/18)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL (30) Priority: 08.02.1985 NO 19850000482 (71) Applicant: A/S NORSK VIFTEFABRIKK N-0666 Oslo 6 (NO)	(72) Inventor: ERIKSSON, Mats N-1400 Ski (NO)