(19)

(11)

EP 0 072 835 A1

(12)

(43) Date of publication: 02.03.1983 Bulletin 1983/09 (21) Application number: 82900631.0 (22) Date of filing: 19.02.1982

(51) International Patent Classification (IPC):  F04B 53/ 06( . ) (86) International application number: PCT/DK1982/000016 (87) International publication number: WO 1982/002928 (02.09.1982 Gazette 1982/21)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 19.02.1981 DK 19810000751 (71) Applicant: A/S N. Foss Electric DK-3400 Hilleroed (DK)	(72) Inventor: PETERSSON, Mogens DK-2970 Horsholm (DK)