(19)

(11)

EP 0 670 939 A1

(12)

(43) Date of publication: 13.09.1995 Bulletin 1995/37 (21) Application number: 94900247.0 (22) Date of filing: 23.11.1993

(51) International Patent Classification (IPC):  E04B 2/ 74( . ) E04B 2/ 78( . ) E04B 2/ 76( . ) (86) International application number: PCT/GB1993/002404 (87) International publication number: WO 1994/012740 (09.06.1994 Gazette 1994/13)

(84) Designated Contracting States: AT BE CH DE DK ES FR GR IE IT LI LU MC NL PT SE (30) Priority: 24.11.1992 GB 19920024398 21.07.1993 GB 19930015139 (60) Divisional application: 97202201.6 / 0805241 (71) Applicant: HAVELOCK EUROPA PLC Eastwood, Nottingham NG16 3HT (GB)	(72) Inventors: IZATT, Alan Douglas Kelty, Fife KY4 0BD (GB) McCUSKER, Walter Rosyth, Fife KY11 2UF (GB) HARPER, Alexander Aberdour, Fife KY3 0XA (GB) WELDON, Ronald James Aberdour, Fife KY3 0RY (GB) (74) Representative: Szczuka, Jan Tymoteusz, et al  Cruikshank & Fairweather 19 Royal Exchange Square Glasgow G1 3AE Scotland Glasgow G1 3AE Scotland (GB)