(19)

(11)

EP 0 759 139 A1

(12)

(43) Date of publication: 26.02.1997 Bulletin 1997/09 (21) Application number: 95918810.0 (22) Date of filing: 02.05.1995

(51) International Patent Classification (IPC):  F28D 9/ 02( . ) B21D 53/ 04( . ) B21D 13/ 04( . ) F28D 9/ 00( . ) (86) International application number: PCT/SE1995/000479 (87) International publication number: WO 1995/030867 (16.11.1995 Gazette 1995/49)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: LT LV SI (30) Priority: 06.05.1994 SE 19940001567 (71) Applicant: HEED, Björn S-412 61 Göteborg (SE)	(72) Inventor: HEED, Björn S-412 61 Göteborg (SE) (74) Representative: Lindberg, Klas Valter Bo, et al  AWAPATENT AB, Södra Hamngatan 37-41, P.O. Box 11394 404 28 Göteborg 404 28 Göteborg (SE)