(19)

(11)

EP 0 880 660 A1

(12)

(43) Date of publication: 02.12.1998 Bulletin 1998/49 (21) Application number: 97951143.0 (22) Date of filing: 03.11.1997

(51) International Patent Classification (IPC):  F24H 1/ 43( . ) F24H 6/ 00( . ) F24H 1/ 52( . ) (86) International application number: PCT/EP1997/006179 (87) International publication number: WO 1998/020287 (14.05.1998 Gazette 1998/19)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 01.11.1996 NL 19961004410 (71) Applicant: Cooperatieve Inkoopvereniging "Coopra-Rotterdam" N.V. 3011 TG Rotterdam (NL)	(72) Inventors: BROUWER, Johan, Derk NL-8162 NN Epe (NL) BENSCHOP, Wim NL-3262 EW Oud-Beijerland (NL) DE BRUIN, Paulus, Albertus, Bartholomeus NL-1076 RG Amsterdam (NL) (74) Representative: Land, Addick Adrianus Gosling, et al  Arnold & Siedsma, Advocaten en Octrooigemachtigden, Sweelinckplein 1 2517 GK Den Haag 2517 GK Den Haag (NL)