(19)

(11)

EP 0 358 648 A1

(12)

(43) Date of publication: 21.03.1990 Bulletin 1990/12 (21) Application number: 88902905.0 (22) Date of filing: 06.04.1988

(51) International Patent Classification (IPC):  B24C( . ) B05B 7/ 32( . ) E04F 21/ 12( . ) B05B 7/ 14( . ) B24C 7/ 00( . ) (86) International application number: PCT/GB1988/000264 (87) International publication number: WO 1988/007915 (20.10.1988 Gazette 1988/23)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 09.04.1987 GB 19870008499 (71) Applicant: GAGEMARCH LIMITED North Yorkshire HG5 9DR (GB)	(72) Inventors: NICHOLSON, Bruce North Yorkshire HG5 9DR (GB) DAVIS, Ronald West Yorkshire BD2 2AU (GB) (74) Representative: Bray, Lilian Janet  L. J. Bray & Co. Raw Holme Midgehole Road Hebden Bridge, West Yorkshire HX7 7AF Hebden Bridge, West Yorkshire HX7 7AF (GB)