(19)

(11)

EP 0 932 770 A1

(12)

(43) Date of publication: 04.08.1999 Bulletin 1999/31 (21) Application number: 97944960.0 (22) Date of filing: 17.10.1997

(51) International Patent Classification (IPC):  F16B 2/ 20( . ) F16B 21/ 08( . ) (86) International application number: PCT/GB1997/002747 (87) International publication number: WO 1998/017922 (30.04.1998 Gazette 1998/17)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 18.10.1996 GB 19960021786 11.12.1996 GB 19960025676 04.08.1997 GB 19970016409 (71) Applicant: Caldwell Investments PLC Leeds LS8 4BA (GB)	(72) Inventors: HILTON, Kevin Newcastle-upon-Tyne NE1 8ST (GB) MARTIN, Daniel Newcastle-upon-Tyne NE1 8ST (GB) (74) Representative: Pawlyn, Anthony Neil  Urquhart-Dykes & Lord, Tower House, Merrion Way Leeds, West Yorkshire LS2 8PA Leeds, West Yorkshire LS2 8PA (GB)