(19)

(11)

EP 0 741 830 A1

(12)

(43) Date of publication: 13.11.1996 Bulletin 1996/46 (21) Application number: 95908410.0 (22) Date of filing: 01.02.1995

(51) International Patent Classification (IPC):  E04H 12/ 32( . ) G09F 17/ 00( . ) (86) International application number: PCT/SE1995/000093 (87) International publication number: WO 1995/021307 (10.08.1995 Gazette 1995/34)

(84) Designated Contracting States: BE DE DK FR GB IT NL (30) Priority: 01.02.1994 SE 19940000327 (71) Applicant: AB GUSTAV STRÖMBLAD S-433 38 Partille (SE)	(72) Inventor: TYCHE, Rolf S-436 56 Askim (SE) (74) Representative: Roth, Ernst Adolf Michael, et al  GÖTEBORGS PATENTBYRA AB Box 5005 402 21 Göteborg 402 21 Göteborg (SE)