(19)

(11)

EP 0 089 334 A1

(12)

(43) Date of publication: 28.09.1983 Bulletin 1983/39 (21) Application number: 81902619.0 (22) Date of filing: 22.09.1981

(51) International Patent Classification (IPC):  F16K 5/ 02( . ) F16K 5/ 06( . ) F16K 5/ 04( . ) F16K 41/ 00( . ) (86) International application number: PCT/AU1981/000139 (87) International publication number: WO 1983/001099 (31.03.1983 Gazette 1983/08)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (71) Applicant: B.C. RICHARDS & CO. PTY. LTD. Geebung, Qld 4034 (AU)	(72) Inventor: RICHARDS, Cecil Graham Aspley, QLD 4034 (US)