(19)

(11)

EP 0 139 636 A1

(12)

(43) Date of publication: 08.05.1985 Bulletin 1985/19 (21) Application number: 83901289.0 (22) Date of filing: 04.03.1983

(51) International Patent Classification (IPC):  B23B 31/ 00( . ) B23B 51/ 08( . ) (86) International application number: PCT/US1983/000299 (87) International publication number: WO 1984/003461 (13.09.1984 Gazette 1984/22)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (71) Applicant: SCOTT, Larry Fort Collins, CO 80524 (US)	(72) Inventor: SCOTT, Larry Fort Collins, CO 80524 (US) (74) Representative: Langhoff, Walter, Dr.  Patentanwälte Grünecker, Kinkeldey, Stockmair & Partner Maximilianstrasse 58 D-8000 München 22 D-8000 München 22 (DE)