(19)

(11)

EP 0 839 265 A1

(12)

(43) Date of publication: 06.05.1998 Bulletin 1998/19 (21) Application number: 96908391.0 (22) Date of filing: 10.04.1996

(51) International Patent Classification (IPC):  F01B 11/ 02( . ) F02B 71/ 04( . ) F01L 25/ 06( . ) F02B 75/ 02( . ) (86) International application number: PCT/NL1996/000157 (87) International publication number: WO 1996/032576 (17.10.1996 Gazette 1996/46)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE (30) Priority: 10.04.1995 NL 19951000098 01.06.1995 NL 19951000479 27.11.1995 NL 19951001750 20.12.1995 NL 19951001939 (71) Applicant: T. Potma Beheer B.V. 2159 LL Kaag (NL)	(72) Inventor: POTMA, Theodorus, Gerhardus NL-2159 LL Kaag (NL) (74) Representative: Ferguson, Alexander  Octrooibureau Vriesendorp & Gaade, P.O. Box 266 2501 AW Den Haag 2501 AW Den Haag (NL)