(19)

(11)

EP 0 725 757 A1

(12)

(43) Date of publication: 14.08.1996 Bulletin 1996/33 (21) Application number: 94909704.0 (22) Date of filing: 22.02.1994

(51) International Patent Classification (IPC):  B66C 3/ 02( . ) E02F 3/ 26( . ) E02F 5/ 02( . ) E21B 7/ 00( . ) E02D 17/ 13( . ) E02F 3/ 47( . ) E21B 4/ 18( . ) E02F 9/ 22( . ) (86) International application number: PCT/US1994/001777 (87) International publication number: WO 1994/019272 (01.09.1994 Gazette 1994/20)

(84) Designated Contracting States: AT DE FR GB IT (30) Priority: 22.02.1993 IL 19930104820 (71) Applicants: HELFGOTT & KARAS, P.C. New York, NY 10118 (US) YITSHAQ, Lipsker Ramat Hasharon (IL)	(72) Inventor: YITSHAQ, Lipsker Ramat Hasharon (IL) (74) Representative: VOSSIUS & PARTNER  Siebertstrasse 4 81675 München 81675 München (DE)