(19)

(11)

EP 0 948 725 A1

(12)

(43) Date of publication: 13.10.1999 Bulletin 1999/41 (21) Application number: 97912564.0 (22) Date of filing: 07.11.1997

(51) International Patent Classification (IPC):  F24H 1/ 22( . ) F24H 7/ 04( . ) (86) International application number: PCT/NL1997/000611 (87) International publication number: WO 1998/020286 (14.05.1998 Gazette 1998/19)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE Designated Extension States: RO SI (30) Priority: 07.11.1996 NL 19961004469 (71) Applicant: Van Den Berg, Robert Ferdinand Alwin 1671 JW Medemblik (NL)	(72) Inventor: Van Den Berg, Robert Ferdinand Alwin 1671 JW Medemblik (NL) (74) Representative: 't Jong, Bastiaan Jacobus, et al  Arnold & Siedsma, Advocaten en Octrooigemachtigden, Sweelinckplein 1 2517 GK Den Haag 2517 GK Den Haag (NL)