(19)

(11)

EP 0 065 980 A1

(12)

(43) Date of publication: 08.12.1982 Bulletin 1982/49 (21) Application number: 82900206.0 (22) Date of filing: 02.12.1981

(51) International Patent Classification (IPC):  B24B 23/ 04( . ) F16H 1/ 32( . ) (86) International application number: PCT/US1981/001595 (87) International publication number: WO 1982/001923 (10.06.1982 Gazette 1982/15)

(84) Designated Contracting States: AT CH DE FR GB LI LU NL SE (30) Priority: 03.12.1980 US 19800212615 (71) Applicant: CONCEPT ENGINEERING INC. Lincoln, NB 68502 (US)	(72) Inventor: GESCHWENDER, Robert C. Lincoln, NB (US)