(19)

(11)

EP 0 069 122 A1

(12)

(43) Date of publication: 12.01.1983 Bulletin 1983/02 (21) Application number: 81902610.0 (22) Date of filing: 15.09.1981

(51) International Patent Classification (IPC):  G01L 17/ 00( . ) B60C 23/ 00( . ) (86) International application number: PCT/AU1981/000129 (87) International publication number: WO 1982/001166 (15.04.1982 Gazette 1982/10)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (30) Priority: 03.10.1980 AU 19800005867 (71) Applicant: SMITH, Noel Bethania Waters, Qld.,4205 (AU)	(72) Inventor: SMITH, Noel Bethania Waters, Qld.,4205 (AU) (74) Representative: Stuart, Ian Alexander, et al  MEWBURN ELLIS York House 23 Kingsway London WC2B 6HP London WC2B 6HP (GB)