(19)

(11)

EP 0 172 241 A1

(12)

(43) Date of publication: 26.02.1986 Bulletin 1986/09 (21) Application number: 85901266.0 (22) Date of filing: 22.02.1985

(51) International Patent Classification (IPC):  F24H 1/ 24( . ) F23L 15/ 04( . ) F24B 7/ 00( . ) F23J 13/ 02( . ) F24B 5/ 02( . ) (86) International application number: PCT/US1985/000291 (87) International publication number: WO 1985/003763 (29.08.1985 Gazette 1985/19)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 22.02.1984 US 19840582300 (71) Applicant: ROBERTSON, Andrew S. Lafayette, CA 94549 (US)	(72) Inventor: ROBERTSON, Andrew S. Lafayette, CA 94549 (US)