(19)

(11)

EP 0 835 416 A1

(12)

(43) Date of publication: 15.04.1998 Bulletin 1998/16 (21) Application number: 96921155.0 (22) Date of filing: 27.06.1996

(51) International Patent Classification (IPC):  F28D 9/ 00( . ) (86) International application number: PCT/NL1996/000263 (87) International publication number: WO 1997/002461 (23.01.1997 Gazette 1997/05)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IE IT LI NL SE (30) Priority: 30.06.1995 NL 19951000706 (71) Applicant: LEVEL ENERGIETECHNIEK B.V. 5691 GD Son (NL)	(72) Inventor: VELTKAMP, Wessel, Bart NL-5691 GD Son (NL) (74) Representative: Eveleens Maarse, Pieter, et al  Arnold & Siedsma, Advocaten en Octrooigemachtigden, Sweelinckplein 1 2517 GK Den Haag 2517 GK Den Haag (NL)