(19)

(11)

EP 0 946 398 A1

(12)

(43) Date of publication: 06.10.1999 Bulletin 1999/40 (21) Application number: 97913326.0 (22) Date of filing: 24.11.1997

(51) International Patent Classification (IPC):  B65D 81/ 32( . ) (86) International application number: PCT/GB1997/003210 (87) International publication number: WO 1998/028206 (02.07.1998 Gazette 1998/26)

(84) Designated Contracting States: CH DE FR IE IT LI NL (30) Priority: 23.12.1996 GB 19960026804 02.07.1997 GB 19970013896 (71) Applicant: BIRKETT ELECTRIC LTD Bucks HP17 9RS (GB)	(72) Inventor: BIRKETT, Brian, Henry Roan Cottage Buckinghamshire HP16 0QQ (GB) (74) Representative: Kensett, John Hinton  Rowland Allsop & Co, 9 Rickmansworth Road Watford, Hertfordshire WD1 7HE Watford, Hertfordshire WD1 7HE (GB)