(19)

(11)

EP 0 507 864 A1

(12)

(43) Date of publication: 14.10.1992 Bulletin 1992/42 (21) Application number: 91902641.0 (22) Date of filing: 20.12.1990

(51) International Patent Classification (IPC):  A47J 37/ 12( . ) F25D 13/ 06( . ) F25B 5/ 04( . ) (86) International application number: PCT/US1990/007553 (87) International publication number: WO 1991/009558 (11.07.1991 Gazette 1991/15)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 29.12.1989 US 19890458982 (71) Applicant: ARTHUR D. LITTLE, INC. Cambridge, Massachusetts 02140-2390 (US)	(72) Inventors: CARON, Richard, N. Dorchester, MA 02122 (US) McFADDEN, David, H. Lexington, MA 02173 (US) COLLINS, John, M. Ipswich, MA 01938 (US) DIECKMANN, John Belmont, MA 02178 (US) (74) Representative: Thomson, Paul Anthony  Potts, Kerr & Co. 15, Hamilton Square Birkenhead Merseyside L41 6BR Birkenhead Merseyside L41 6BR (GB)