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(11)

EP 0 312 538 A1

(12)

(43) Date of publication: 26.04.1989 Bulletin 1989/17 (21) Application number: 87904372.0 (22) Date of filing: 02.07.1987

(51) International Patent Classification (IPC):  B23G 5/ 06( . ) B23G 9/ 00( . ) (86) International application number: PCT/AU1987/000196 (87) International publication number: WO 1988/000103 (14.01.1988 Gazette 1988/02)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 03.07.1986 AU 19860006722 (71) Applicants: TRIO DEVELOPEMENTS PTY. LTD. Narre Warren, VIC 3805 (AU) MIZZI, Joseph Phillip Anthony Sale, VIC 3850 (AU)	(72) Inventor: MIZZI, Joseph Phillip Anthony Sale, VIC 3850 (AU) (74) Representative: Stracke, Alexander, Dipl.-Ing., et al  Jöllenbecker Strasse 164 D-33613 Bielefeld D-33613 Bielefeld (DE)