(19)

(11)

EP 0 056 375 A1

(12)

(43) Date of publication: 28.07.1982 Bulletin 1982/30 (21) Application number: 81901557.0 (22) Date of filing: 10.07.1980

(51) International Patent Classification (IPC):  F23R 3/ 16( . ) F23R 3/ 30( . ) (86) International application number: PCT/US1980/000884 (87) International publication number: WO 1982/000334 (04.02.1982 Gazette 1982/04)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (71) Applicant: CATERPILLAR TRACTOR CO. Peoria, Illinois 61629 (US)	(72) Inventor: BAILEY, John M. Dunlap, IL 61525 (US) (74) Representative: Jackson, Peter Arthur, et al  GILL JENNINGS & EVERY Broadgate House 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)