(19)

(11)

EP 0 203 915 A1

(12)

(43) Date of publication: 10.12.1986 Bulletin 1986/50 (21) Application number: 84904319.0 (22) Date of filing: 27.11.1984

(51) International Patent Classification (IPC):  B25B 13/ 46( . ) (86) International application number: PCT/US1984/001933 (87) International publication number: WO 1986/003155 (05.06.1986 Gazette 1986/12)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (71) Applicant: COLVIN, David S. Farmington Hills, MI 48018 (US)	(72) Inventor: COLVIN, David S. Farmington Hills, MI 48018 (US) (74) Representative: Orr, William McLean, et al  URQUHART-DYKES & LORD 5th Floor, Tower House Merrion Way Leeds West Yorkshire, LS2 8PA Leeds West Yorkshire, LS2 8PA (GB)