(19)

(11)

EP 0 020 363 A1

(12)

(43) Date of publication: 07.01.1981 Bulletin 1981/01 (21) Application number: 79900945.0 (22) Date of filing: 29.11.1978

(51) International Patent Classification (IPC):  F16D 25/ 06( . ) F16D 48/ 02( . ) F16H 63/ 02( . ) F16H 59/ 08( . ) F16D 25/ 00( . ) F16H 61/ 06( . ) F16H 63/ 12( . ) (86) International application number: PCT/US1978/000177 (87) International publication number: WO 1980/001153 (12.06.1980 Gazette 1980/13)

(84) Designated Contracting States: FR GB (71) Applicant: CATERPILLAR TRACTOR CO. Peoria, Illinois 61629 (US)	(72) Inventor: BLAKE, William Wayne Kewanee, IL 61443 (US) (74) Representative: Brunner, Michael John  GILL JENNINGS & EVERY Broadgate House 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)