(19)

(11)

EP 0 612 366 A1

(12)

(43) Date of publication: 31.08.1994 Bulletin 1994/35 (21) Application number: 92915647.0 (22) Date of filing: 17.07.1992

(51) International Patent Classification (IPC):  E05B 9/ 08( . ) E05B 1/ 00( . ) (86) International application number: PCT/GB1992/001315 (87) International publication number: WO 1993/002267 (04.02.1993 Gazette 1993/04)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 23.07.1991 GB 19910158659 (71) Applicant: HIS LIMITED Bridgwater, Somerset TA6 6PS (GB)	(72) Inventors: BERRY, William, Kenneth Woodpecker Hill Wedmore Somerset BS28 4HW (GB) HEAD, Gregory, Charles 49 Derick Road Devon EX16 5AB (GB) (74) Representative: Sanders, Peter Colin Christopher, et al  BROOKES & MARTIN High Holborn House 52/54 High Holborn London WC1V 6SE London WC1V 6SE (GB)