(19)

(11)

EP 1 509 703 A1

(12)

(43) Date of publication: 02.03.2005 Bulletin 2005/09 (21) Application number: 02767622.0 (22) Date of filing: 03.09.2002

(51) International Patent Classification (IPC)7: F16B 31/02 (86) International application number: PCT/GB2002/004040 (87) International publication number: WO 2003/021115 (13.03.2003 Gazette 2003/11)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR (30) Priority: 03.09.2001 GB 0121317 (71) Applicant: SJB Engineering Ltd Bristol BS1 6HG (GB)	(72) Inventors: WILTSHIRE, Clive Coalpit Heath,Bristol BS36 2PY (GB) WALTERS, David, John Bristol BS9 1BW (GB) (74) Representative: Williams, Ceili et al Stevens Hewlett & PerkinsHalton House20/23 Holborn London EC1N 2JD London EC1N 2JD (GB)