(19)

(11)

EP 0 375 701 A1

(12)

(43) Date of publication: 04.07.1990 Bulletin 1990/27 (21) Application number: 88906985.0 (22) Date of filing: 18.07.1988

(51) International Patent Classification (IPC):  F25C 5/ 18( . ) (86) International application number: PCT/GB1988/000578 (87) International publication number: WO 1989/000668 (26.01.1989 Gazette 1989/03)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 17.07.1987 US 19870074834 17.09.1987 US 19870097890 23.06.1988 US 19880225711 (71) Applicant: Sunwell Engineering Company Limited Woodbridge Ontario L4L 4X7 (CA)	(72) Inventor: GOLDSTEIN, Vladimir, L. Toronto, Ontario M4P LZ2 (CA) (74) Representative: Orr, William McLean  URQUHART-DYKES & LORD 5th Floor, Tower House Merrion Way Leeds West Yorkshire, LS2 8PA Leeds West Yorkshire, LS2 8PA (GB)