(19)

(11)

EP 0 954 662 A1

(12)

(43) Date of publication: 10.11.1999 Bulletin 1999/45 (21) Application number: 97916531.0 (22) Date of filing: 10.04.1997

(51) International Patent Classification (IPC):  E05B 13/ 00( . ) (86) International application number: PCT/GB1997/000994 (87) International publication number: WO 1997/038190 (16.10.1997 Gazette 1997/44)

(84) Designated Contracting States: BE DE ES FR GB IT NL (30) Priority: 11.04.1996 GB 19960007496 24.03.1997 GB 19970006218 (71) Applicant: Houghton, Ernest Gilbert Ipswich, Suffolk IP1 2PG (GB)	(72) Inventor: Houghton, Ernest Gilbert Ipswich, Suffolk IP1 2PG (GB) (74) Representative: Copp, David Christopher  25 The Square Martlesham Heath Ipswich, Suffolk IP5 7SL Ipswich, Suffolk IP5 7SL (GB)