(19)

(11)

EP 0 049 292 A1

(12)

(43) Date of publication: 14.04.1982 Bulletin 1982/15 (21) Application number: 81901162.0 (22) Date of filing: 10.04.1981

(51) International Patent Classification (IPC):  E03F 5/ 04( . ) (86) International application number: PCT/NL1981/000012 (87) International publication number: WO 1981/002906 (15.10.1981 Gazette 1981/24)

(84) Designated Contracting States: AT CH DE FR GB LI LU NL SE (30) Priority: 11.04.1980 NL 19800002125 (71) Applicant: Raatjes, Egbert Sijbolt NL-3768 BG Soest (NL)	(72) Inventor: Raatjes, Egbert Sijbolt NL-3768 BG Soest (NL) (74) Representative: Kooy, Leendert Willem  OCTROOIBUREAU VRIESENDORP & GAADE P.O. Box 266 NL-2501 AW The Hague NL-2501 AW The Hague (NL)