(19)

(11)

EP 0 681 634 A1

(12)

(43) Date of publication: 15.11.1995 Bulletin 1995/46 (21) Application number: 94905169.0 (22) Date of filing: 26.01.1994

(51) International Patent Classification (IPC):  E04D 13/ 12( . ) E04G 21/ 32( . ) (86) International application number: PCT/GB1994/000149 (87) International publication number: WO 1994/017261 (04.08.1994 Gazette 1994/18)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 26.01.1993 GB 19930001504 (71) Applicants: PATERSON & SON Barrhead, Glasgow G78 1QB (GB) CRAWFORD, Henry East Kilbride, Glasgow G74 2EG (GB)	(72) Inventor: CRAWFORD, Henry East Kilbride Glasgow g74 2EG (GB) (74) Representative: Naismith, Robert Stewart, et al  CRUIKSHANK & FAIRWEATHER 19 Royal Exchange Square Glasgow, G1 3AE Scotland Glasgow, G1 3AE Scotland (GB)