(19)

(11)

EP 0 912 793 A1

(12)

(43) Date of publication: 06.05.1999 Bulletin 1999/18 (21) Application number: 96920080.0 (22) Date of filing: 16.04.1996

(51) International Patent Classification (IPC):  D21C 7/ 06( . ) (86) International application number: PCT/SE1996/000487 (87) International publication number: WO 1997/039177 (23.10.1997 Gazette 1997/45)

(84) Designated Contracting States: DE FI FR GB (71) Applicant: Regalco Engineering AB 181 03 Lidingö (SE)	(72) Inventor: NILSSON, Kjell S-181 65 Lidingö (SE) (74) Representative: Waldinger, Ake  Roslinvägen 41 161 55 Bromma 161 55 Bromma (SE)