(19)

(11)

EP 0 349 565 A1

(12)

(43) Date of publication: 10.01.1990 Bulletin 1990/02 (21) Application number: 88902594.0 (22) Date of filing: 07.03.1988

(51) International Patent Classification (IPC):  G08B 13/ 04( . ) G08B 13/ 16( . ) (86) International application number: PCT/SE1988/000105 (87) International publication number: WO 1988/006774 (07.09.1988 Gazette 1988/20)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 06.03.1987 SE 19870000952 (71) Applicant: Eriksson, Lars S-361 00 Emmaboda (SE)	(72) Inventor: Eriksson, Lars S-361 00 Emmaboda (SE) (74) Representative: Bjelkstam, Peter  Radjursvägen 11 S-131 42 Nacka S-131 42 Nacka (SE)