(19)

(11)

EP 0 148 875 A1

(12)

(43) Date of publication: 24.07.1985 Bulletin 1985/30 (21) Application number: 84902464.0 (22) Date of filing: 14.06.1984

(51) International Patent Classification (IPC):  E05B 17/ 22( . ) (86) International application number: PCT/GB1984/000204 (87) International publication number: WO 1985/000192 (17.01.1985 Gazette 1985/02)

(84) Designated Contracting States: AT BE CH DE FR LI LU NL SE (30) Priority: 23.06.1983 GB 19830017060 (71) Applicant: WILMOT BREEDEN LIMITED Birmingham B30 3BW (GB)	(72) Inventors: JEAVONS, Philip, Swingewood Hall Green Birmingham B28 (GB) VILAIN, Francis, Leon Solihull, West Midlands (GB)