(19)

(11)

EP 0 080 495 A1

(12)

(43) Date of publication: 08.06.1983 Bulletin 1983/23 (21) Application number: 82901950.0 (22) Date of filing: 14.05.1982

(51) International Patent Classification (IPC):  B23B 31/ 107( . ) (86) International application number: PCT/US1982/000645 (87) International publication number: WO 1982/004209 (09.12.1982 Gazette 1982/29)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 08.06.1981 US 19810271394 (71) Applicant: SCOTT, Larry Fort Collins, CO 80524 (US)	(72) Inventor: SCOTT, Larry Fort Collins, CO 80524 (US)