(19)

(11)

EP 0 745 052 A1

(12)

(43) Date of publication: 04.12.1996 Bulletin 1996/49 (21) Application number: 95942706.0 (22) Date of filing: 20.12.1995

(51) International Patent Classification (IPC):  B21D 51/ 20( . ) B65D 8/ 22( . ) B23K 26/ 24( . ) (86) International application number: PCT/EP1995/005047 (87) International publication number: WO 1996/019385 (27.06.1996 Gazette 1996/29)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IE IT LI NL (30) Priority: 20.12.1994 DE 19944445365 27.06.1995 DE 19951023200 26.09.1995 DE 19951035736 (71) Applicant: SULO EISENWERK Streuber & Lohmann GmbH & Co. KG 32051 Herford (DE)	(72) Inventors: NOLTING, Reinhard D-32758 Detmold (DE) WEIGEL, Hans, U. D-32052 Herford (DE) KLEIN, Rolf D-52146 Würselen (DE) POPRAWE, Reinhard D-52072 Aachen (DE) FISCHER, Rainer D-52146 Würselen (DE) (74) Representative: Steinmeister, Helmut, Dipl.-Ing., et al  Patentanwälte TER MEER-MÜLLER-STEINMEISTER & PARTNER Artur-Ladebeck-Strasse 51 33617 Bielefeld 33617 Bielefeld (DE)