(19)

(11)

EP 0 241 489 A1

(12)

(43) Date of publication: 21.10.1987 Bulletin 1987/43 (21) Application number: 86905692.0 (22) Date of filing: 09.10.1986

(51) International Patent Classification (IPC):  A61D 7/ 00( . ) F04B 43/ 08( . ) F04B 9/ 14( . ) G01F 11/ 08( . ) (86) International application number: PCT/AU1986/000298 (87) International publication number: WO 1987/002422 (23.04.1987 Gazette 1987/09)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 11.10.1985 AU 19850002878 (71) Applicant: HARRIS, Graeme, William Kojonup. W.A. 6395 (AU)	(72) Inventor: HARRIS, Graeme, William Kojonup. W.A. 6395 (AU)