(19)

(11)

EP 0 644 984 A1

(12)

(43) Date of publication: 29.03.1995 Bulletin 1995/13 (21) Application number: 93908356.0 (22) Date of filing: 12.03.1993

(51) International Patent Classification (IPC):  F04B 17/ 00( . ) F04B 53/ 10( . ) F04B 53/ 00( . ) F16K 15/ 00( . ) (86) International application number: PCT/US1993/002379 (87) International publication number: WO 1994/020754 (15.09.1994 Gazette 1994/21)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: SAURWEIN, Albert C. Granger, WA 98932 (US)	(72) Inventor: SAURWEIN, Albert C. Granger, WA 98932 (US) (74) Representative: Arthur, Bryan Edward  Withers & Rogers 4 Dyers Buildings Holborn London, EC1N 2JT London, EC1N 2JT (GB)