(19)

(11)

EP 0 188 563 A1

(12)

(43) Date of publication: 30.07.1986 Bulletin 1986/31 (21) Application number: 85903676.0 (22) Date of filing: 23.07.1985

(51) International Patent Classification (IPC):  E04C 3/ 06( . ) E04C 3/ 04( . ) (86) International application number: PCT/GB1985/000326 (87) International publication number: WO 1986/000949 (13.02.1986 Gazette 1986/04)

(84) Designated Contracting States: DE FR GB IT NL SE (30) Priority: 26.07.1984 GB 19840019108 (71) Applicant: GKN Kwikform Limited GB-Ealing, London W5 5SE (GB)	(72) Inventor: LOVERING, Dennis William Wolverhampton West Midlands WV6 7DJ (GB)