(19)

(11)

EP 0 238 606 A1

(12)

(43) Date of publication: 30.09.1987 Bulletin 1987/40 (21) Application number: 86905887.0 (22) Date of filing: 30.09.1986

(51) International Patent Classification (IPC):  B25C 5/ 15( . ) B27F 7/ 00( . ) B25C 5/ 16( . ) (86) International application number: PCT/GB1986/000584 (87) International publication number: WO 1987/001983 (09.04.1987 Gazette 1987/08)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 30.09.1985 LU 19850086102 (71) Applicant: UNITED TECHNOLOGICAL INDUSTRIES LIMITED Bristol BS4 3HD (GB)	(72) Inventor: WOLFF, Norbert Namer (LU)