(19)

(11)

EP 0 730 695 A1

(12)

(43) Date of publication: 11.09.1996 Bulletin 1996/37 (21) Application number: 95902841.0 (22) Date of filing: 25.11.1994

(51) International Patent Classification (IPC):  E04B 1/ 94( . ) (86) International application number: PCT/GB1994/002588 (87) International publication number: WO 1995/014828 (01.06.1995 Gazette 1995/23)

(84) Designated Contracting States: DE FR (30) Priority: 26.11.1993 GB 19930024344 (71) Applicant: BTR plc London SW1P 2PL (GB)	(72) Inventor: GANENDRAN, Arasapillai N. Swadlincote, Derby DE11 0OX (GB) (74) Representative: Sparrow, Alvar Alfred, et al  BTR Group Business Services, Intellectual Property, PO Box 504 Erdington, Birmingham B24 9QH Erdington, Birmingham B24 9QH (GB)