(19)

(11)

EP 0 808 392 A1

(12)

(43) Date of publication: 26.11.1997 Bulletin 1997/48 (21) Application number: 96939213.0 (22) Date of filing: 25.11.1996

(51) International Patent Classification (IPC):  E03B 7/ 04( . ) (86) International application number: PCT/GB1996/002897 (87) International publication number: WO 1997/020112 (05.06.1997 Gazette 1997/24)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE (30) Priority: 28.11.1995 GB 19950024315 (71) Applicant: Willmott, John Andrew Tenbury Wells, Worcs. WR15 8NJ (GB)	(72) Inventor: Willmott, John Andrew Tenbury Wells, Worcs. WR15 8NJ (GB) (74) Representative: Shaw, Laurence  5th Floor, Metropolitan House, 1 Hagley Road, Edgbaston Birmingham B16 8TG Birmingham B16 8TG (GB)