(19)

(11)

EP 0 746 736 A1

(12)

(43) Date of publication: 11.12.1996 Bulletin 1996/50 (21) Application number: 95911542.0 (22) Date of filing: 03.03.1995

(51) International Patent Classification (IPC):  F26B 21/ 08( . ) (86) International application number: PCT/SE1995/000225 (87) International publication number: WO 1995/023946 (08.09.1995 Gazette 1995/38)

(84) Designated Contracting States: AT DE DK FR GB IT (30) Priority: 03.03.1994 SE 19940000745 (71) Applicant: PROPAC AB 977 75 Lulea (SE)	(72) Inventors: BJÖRKMAN, Eric S-975 95 Lule (SE) ERICSSON, Stefan S-975 95 Lule (SE) (74) Representative: Onn, Thorsten, et al  AB STOCKHOLMS PATENTBYRA Box 23101 104 35 Stockholm 104 35 Stockholm (SE)