(19)

(11)

EP 0 406 394 A1

(12)

(43) Date of publication: 09.01.1991 Bulletin 1991/02 (21) Application number: 90902118.0 (22) Date of filing: 19.01.1990

(51) International Patent Classification (IPC):  B66C 5/ 00( . ) B66C 23/ 52( . ) B66C 19/ 00( . ) (86) International application number: PCT/AU1990/000016 (87) International publication number: WO 1990/008093 (26.07.1990 Gazette 1990/17)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 20.01.1989 AU 19890002361 (71) Applicant: TONKIN, Norman Oatley, NSW 2223 (AU)	(72) Inventor: TONKIN, Norman Oatley, NSW 2223 (AU) (74) Representative: Kahler, Kurt, Dipl.-Ing.  Patentanwälte Kahler, Käck, Fiener & Sturm P.O. Box 12 49 D-87712 Mindelheim D-87712 Mindelheim (DE)