(19)

(11)

EP 1 086 508 A1

(12)

(43) Date of publication: 28.03.2001 Bulletin 2001/13 (21) Application number: 99922323.3 (22) Date of filing: 14.05.1999

(51) International Patent Classification (IPC)7: H01Q 1/24, H01Q 3/18 (86) International application number: PCT/GB9901/548 (87) International publication number: WO 9960/658 (25.11.1999 Gazette 1999/47)

(84) Designated Contracting States: AT CH DE DK ES FR GB IT LI NL SE (30) Priority: 15.05.1998 GB 9810584 (71) Applicant: Cambridge Industries Limited Theale, Berkshire RG7 4AB (GB)	(72) Inventors: GRICE, Derek Arthur Henry West Byfleet,Surrey KT14 6DZ (GB) WILSON, Simon Paul Maidenhead,Berkshire SL6 1PB (GB) (74) Representative: Naismith, Robert Stewart et al CRUIKSHANK & FAIRWEATHER19 Royal Exchange Square Glasgow, G1 3AEScotland Glasgow, G1 3AEScotland (GB)