(19)

(11)

EP 0 693 207 A1

(12)

(43) Date of publication: 24.01.1996 Bulletin 1996/04 (21) Application number: 94912723.0 (22) Date of filing: 07.04.1994

(51) International Patent Classification (IPC):  G08B 13/ 26( . ) (86) International application number: PCT/SE1994/000308 (87) International publication number: WO 1994/024645 (27.10.1994 Gazette 1994/24)

(84) Designated Contracting States: AT BE DE ES FR GB IT SE (30) Priority: 08.04.1993 SE 19930001206 (71) Applicants: Hansson, Göran S-752 41 Uppsala (SE) Lindgren, Bo S-136 49 Haninge (SE) SODERBERG, Tommy S-186 32 Vallentuna (SE)	(72) Inventors: Hansson, Göran S-752 41 Uppsala (SE) Lindgren, Bo S-136 49 Haninge (SE) SODERBERG, Tommy S-186 32 Vallentuna (SE) (74) Representative: Mrazek, Werner, et al  Dr. Ludwig Brann Patentbyra AB P.O. Box 1344 S-751 43 Uppsala S-751 43 Uppsala (SE)