(19)

(11)

EP 0 070 885 A1

(12)

(43) Date of publication: 09.02.1983 Bulletin 1983/06 (21) Application number: 82900769.0 (22) Date of filing: 05.02.1982

(51) International Patent Classification (IPC):  F15D 1/ 08( . ) (86) International application number: PCT/AU1982/000012 (87) International publication number: WO 1982/002750 (19.08.1982 Gazette 1982/20)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (30) Priority: 09.02.1981 AU 19810007515 04.11.1981 AU 19810001420 (71) Applicant: LEES, Jeremy J. Birchgrove, N.S.W. 2041 (AU)	(72) Inventor: LEES, Jeremy J. Birchgrove, N.S.W. 2041 (AU) (74) Representative: Roos, Michael John, et al  KILBURN & STRODE 30 John Street London WC1N 2DD London WC1N 2DD (GB)