Patent ID: 6865957

Claim:
A fluid mass flow meter device, comprising: a. a housing having a wall portion forming a chamber, said chamber possessing an entrance and an exit for passing fluid through said chamber; b. a body located in said chamber said body including a first conical portion having a base and an apex positioned adjacent said chamber entrance, a second conical portion having a base and an apex positioned adjacent said chamber exit, and a cylindrical portion intermediately positioned relative to said first and second conical portions, said cylindrical portion having a first base and a second base, said base of said first conical portion lying against said first base of said cylindrical portion to orient said apex of said first conical portion toward said chamber entrance to contact fluid entering said chamber, said base of said second conical portion lying against second base of said cylindrical portion to orient said apex of said second conical portion toward said exit of said chamber to contact fluid passing through said chamber, said apexes of said first and second conical portions being free to directly contact fluid in said chamber; c. support means for holding said body within said chamber; d. a first pressure probe, said first pressure probe obtaining a first pressure measurement at the apex of said first conical portion of said body; and e. a second pressure probe, said second pressure probe obtaining a second pressure measurement at said cylindrical portion of said body.