(19)

(11)

EP 0 119 210 A1

(12)

(43) Date of publication: 26.09.1984 Bulletin 1984/39 (21) Application number: 83902739.0 (22) Date of filing: 11.08.1983

(51) International Patent Classification (IPC):  F04B 47/ 08( . ) (86) International application number: PCT/US1983/001233 (87) International publication number: WO 1984/001191 (29.03.1984 Gazette 1984/09)

(84) Designated Contracting States: AT BE CH DE FR GB LI NL SE (30) Priority: 22.09.1982 US 19820421503 (71) Applicant: WATTS, John Dawson Houston TX 77084 (US)	(72) Inventor: WATTS, John Dawson Houston TX 77084 (US) (74) Representative: Wynne-Jones, John Vaughan, et al  22, Rodney Road Cheltenham Glos, GL50 1JJ Cheltenham Glos, GL50 1JJ (GB)