(19)

(11)

EP 2 160 574 A1

(12)

(43) Date of publication: 10.03.2010 Bulletin 2010/10 (21) Application number: 07805668.6 (22) Date of filing: 26.06.2007

(51) International Patent Classification (IPC):  G01F 23/04(2006.01) (86) International application number: PCT/IT2007/000456 (87) International publication number: WO 2009/001380 (31.12.2008 Gazette 2009/01)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (71) Applicant: DYTECH - Dynamic Fluid Technologies S.p.A. 10123 Torino (IT)	(72) Inventors: ZASA, Mario I-10042 Nichelino (IT) DEFILIPPI, Roberto I-10141 Torino (IT) (74) Representative: Fiussello, Francesco et al Studio Torta Via Viotti, 9 I-10121 Torino I-10121 Torino (IT)