(19)

(11)

EP 0 229 137 A1

(12)

(43) Date of publication: 22.07.1987 Bulletin 1987/30 (21) Application number: 86904255.0 (22) Date of filing: 25.06.1986

(51) International Patent Classification (IPC):  E04H 17/ 10( . ) (86) International application number: PCT/GB1986/000370 (87) International publication number: WO 1987/000231 (15.01.1987 Gazette 1987/01)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 26.06.1985 GB 19850016152 01.07.1985 GB 19850016656 (71) Applicant: BRANSTON, Colin, James Cheltenham, Gloucestershire GL54 2LF (GB)	(72) Inventor: BRANSTON, Colin, James Cheltenham, Gloucestershire GL54 2LF (GB) (74) Representative: Topps, Ronald, et al  D. YOUNG & CO 10 Staple Inn London WC1V 7RD London WC1V 7RD (GB)