(19)

(11)

EP 0 217 909 A1

(12)

(43) Date of publication: 15.04.1987 Bulletin 1987/16 (21) Application number: 86902523.0 (22) Date of filing: 27.03.1986

(51) International Patent Classification (IPC):  F23N 5/ 00( . ) F24C 5/ 16( . ) (86) International application number: PCT/NL1986/000010 (87) International publication number: WO 1986/005860 (09.10.1986 Gazette 1986/22)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 27.03.1985 NL 19850000889 (71) Applicants: MINTEN,Johannes, Martinus NL-6413 AD Heerlen (NL) MINTEN,Hubertus, Leonardus NL-6371 XK Schaarsberg (NL)	(72) Inventors: MINTEN,Johannes, Martinus NL-6413 AD Heerlen (NL) MINTEN,Hubertus, Leonardus NL-6371 XK Schaarsberg (NL) (74) Representative: Stenger, Watzke & Ring Patentanwälte  Kaiser-Friedrich-Ring 70 D-40547 Düsseldorf D-40547 Düsseldorf (DE)