Patent ID: 8181537

Claim:
A fluid flow meter comprising: a housing; a torque force measuring means disposed in said housing; a first torque shaft increment disposed along a torque axis and coupled at one end thereof to said force measuring means for measuring torque forces in said torque shaft about said torque axis; a static impeller secured proximate of one end of a second torque shaft increment that is disposed along said torque axis for developing torque forces about said torque axis in response to fluid flow contacting said flow impeller; and, linearizer means disposed along said torque axis between said one end of said first shaft increment and said one end of said second shaft increment, respective other ends of said first and second shaft increments being secured to said linearizer means, said linearizer means for converting exponential angular displacement of said impeller due to fluid flow thereover to a more linear angular displacement at the one end of said first shaft increment essentially corresponding to the rate of fluid flowing over said static impeller.