(19)

(11)

EP 0 317 608 A1

(12)

(43) Date of publication: 31.05.1989 Bulletin 1989/22 (21) Application number: 88905103.0 (22) Date of filing: 16.05.1988

(51) International Patent Classification (IPC):  F16K 11/ 06( . ) F16K 11/ 065( . ) (86) International application number: PCT/US1988/001616 (87) International publication number: WO 1988/009457 (01.12.1988 Gazette 1988/26)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 19.05.1987 CA 19870537390 (71) Applicant: HAMILTON, Larry C. Toronto, Ontario M5A 4E2 (CA)	(72) Inventor: HAMILTON, Larry C. Toronto, Ontario M5A 4E2 (CA) (74) Representative: Kopacz, William James Cabinet M. SABATIER  83 avenue Foch F-75116 Paris F-75116 Paris (FR)