(19)

(11)

EP 0 699 292 A1

(12)

(43) Date of publication: 06.03.1996 Bulletin 1996/10 (21) Application number: 94911228.0 (22) Date of filing: 25.03.1994

(51) International Patent Classification (IPC):  B21D 53/ 04( . ) F28F 3/ 04( . ) F28D 9/ 00( . ) F28F 3/ 08( . ) (86) International application number: PCT/GB1994/000632 (87) International publication number: WO 1994/028367 (08.12.1994 Gazette 1994/27)

(84) Designated Contracting States: AT BE CH DE DK ES FR IT LI NL SE (30) Priority: 29.05.1993 GB 19930011198 08.12.1993 GB 19930025148 (71) Applicant: Bowman E.J. (Birmingham) Ltd. Birmingham B6 4AP (GB)	(72) Inventor: BOWMAN, John, Edwin 5 Blyth Way West Midlands B91 3EY (GB) (74) Representative: Hands, Horace Geoffrey, et al  GEORGE FUERY & CO Whitehall Chambers 23 Colmore Row Birmingham B3 2BL Birmingham B3 2BL (GB)