(19)

(11)

EP 0 781 191 A1

(12)

(43) Date of publication: 02.07.1997 Bulletin 1997/27 (21) Application number: 95918196.0 (22) Date of filing: 02.05.1995

(51) International Patent Classification (IPC):  B24D 5/ 06( . ) B23K 1/ 00( . ) B28D 1/ 02( . ) B23K 35/ 30( . ) B23D 61/ 04( . ) B24D 5/ 12( . ) B28D 1/ 12( . ) (86) International application number: PCT/KR1995/000044 (87) International publication number: WO 1996/007521 (14.03.1996 Gazette 1996/12)

(84) Designated Contracting States: AT BE DE ES FR GB IT PT (30) Priority: 05.09.1994 KR 19940022268 (71) Applicants: EHWA DIAMOND IND. CO., LTD. Kyongki-do 447-060 (KR) GENERAL TOOL, INC. Irvine, CA 92714 (US)	(72) Inventors: HAN, Jung, Soo Gunpo-si 435-042 (KR) KIM, Jae, Woo Youngdeungpo-ku-Seoul 150-010 (KR) (74) Representative: Parr, Ronald Edward R.E. Parr & Co.  Colman House Station Road Knowle Solihull West Midlands B93 0HL Knowle Solihull West Midlands B93 0HL (GB)