(19)

(11)

EP 0 022 804 A1

(12)

(43) Date of publication: 28.01.1981 Bulletin 1981/04 (21) Application number: 80900116.0 (22) Date of filing: 14.01.1980

(51) International Patent Classification (IPC):  E05B 47/ 00( . ) (86) International application number: PCT/GB1980/000007 (87) International publication number: WO 1980/001586 (07.08.1980 Gazette 1980/18)

(84) Designated Contracting States: DE FR GB NL SE (30) Priority: 24.01.1979 GB 19790002561 (71) Applicant: LOWE & FLETCHER LIMITED Leamore, Walsall West Midlands WS2 7LZ (GB)	(72) Inventor: HERRIOTT, Leslie Victor Wolverhampton West Midlands (GB) (74) Representative: Lewis, Samuel Hewitt  FORRESTER & BOEHMERT Franz-Joseph-Strasse 38 D-80801 München D-80801 München (DE)