(19)

(11)

EP 0 993 526 A1

(12)

(43) Date of publication: 19.04.2000 Bulletin 2000/16 (21) Application number: 98932309.2 (22) Date of filing: 29.06.1998

(51) International Patent Classification (IPC)7: E01C 9/08, E04H 15/56 (86) International application number: PCT/GB9801/896 (87) International publication number: WO 9901/618 (14.01.1999 Gazette 1999/02)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 01.07.1997 GB 9713786 (71) Applicant: SLD Genlite Limited Gildersome,Leeds LS27 7TN (GB)	(72) Inventor: NOLAN, Anthony,James & Bloom Limited Stockport,Cheshire SK4 5DF (GB) (74) Representative: Maguire, Peter Albert et al Maguire Boss,5 Crown Street St. Ives,Cambridgeshire PE17 4EB St. Ives,Cambridgeshire PE17 4EB (GB)