(19)

(11)

EP 0 433 284 A1

(12)

(43) Date of publication: 26.06.1991 Bulletin 1991/26 (21) Application number: 88909489.0 (22) Date of filing: 06.09.1988

(51) International Patent Classification (IPC):  B25B 23/ 00( . ) (86) International application number: PCT/US1988/003057 (87) International publication number: WO 1990/002634 (22.03.1990 Gazette 1990/07)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (71) Applicant: NICKIPUCK, Michael F. Brookfild, IL 60513 (US)	(72) Inventor: NICKIPUCK, Michael F. Brookfild, IL 60513 (US) (74) Representative: Lewald, Dietrich, Dipl.-Ing.  Patentanwalt Pienzenauerstrasse 2 W-8000 München 80 W-8000 München 80 (DE)