(19)

(11)

EP 0 948 729 A1

(12)

(43) Date of publication: 13.10.1999 Bulletin 1999/41 (21) Application number: 97911327.0 (22) Date of filing: 10.11.1997

(51) International Patent Classification (IPC):  E05C 19/ 16( . ) B29C 45/ 00( . ) F25D 23/ 08( . ) (86) International application number: PCT/GB1997/003009 (87) International publication number: WO 1998/021534 (22.05.1998 Gazette 1998/20)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 09.11.1996 GB 19960023378 (71) Applicant: NORFROST LIMITED Caithness KW14 8TY (GB)	(72) Inventor: GRANT, Alexander Caithness KW1 5XJ (GB) (74) Representative: Ede, Eric  Fitzpatricks, 4 West Regent Street Glasgow G2 1RS, Scotland Glasgow G2 1RS, Scotland (GB)