(19)

(11)

EP 0 469 111 A1

(12)

(43) Date of publication: 05.02.1992 Bulletin 1992/06 (21) Application number: 91903904.0 (22) Date of filing: 13.02.1991

(51) International Patent Classification (IPC):  E04B 1/ 70( . ) F26B 21/ 08( . ) F26B 21/ 00( . ) (86) International application number: PCT/GB1991/000219 (87) International publication number: WO 1991/012476 (22.08.1991 Gazette 1991/19)

(84) Designated Contracting States: BE DE DK ES FR GB IT NL SE (30) Priority: 16.02.1990 GB 19900003571 (71) Applicant: MANAGEMENT & GUIDANCE SERVICES LIMITED Lichfield, Staffordshire WS14 9TZ (GB)	(72) Inventor: SIMPSON, Anthony Harry Nr. Rugeley, Staffordshire WS15 1QA (GB) (74) Representative: Parker, Nigel Edward, et al  H.N. & W.S. Skerrett, Charles House, 148/9 Great Charles Street Birmingham B3 3HT Birmingham B3 3HT (GB)