(19)

(11)

EP 0 621 807 A1

(12)

(43) Date of publication: 02.11.1994 Bulletin 1994/44 (21) Application number: 93902377.0 (22) Date of filing: 11.01.1993

(51) International Patent Classification (IPC):  B29C 70/ 68( . ) B29D 33/ 00( . ) B29C 70/ 74( . ) (86) International application number: PCT/GB1993/000041 (87) International publication number: WO 1993/013876 (22.07.1993 Gazette 1993/18)

(84) Designated Contracting States: BE DE ES FR IT PT SE (30) Priority: 16.01.1992 GB 19920000905 (71) Applicant: THE TEMPERED SPRING COMPANY LIMITED Sheffield, Yorkshire S4 7WS (GB)	(72) Inventors: FINCH, John, Russell 41 Lang Road Yorkshire, Y02 1QJ (GB) FERDANI, Philip Warwickshire CV22 6QD (GB) (74) Representative: Hammersley, John  c/o T & N plc Group Patent & Trademark Department Bowdon House Ashburton Road West, Trafford Park Manchester M17 1RA Manchester M17 1RA (GB)