Impeller 1 rotates about fixed axis A and has three teeth d. Distributor rotor 2 rotates about fixed axis B and has circular recess c. Rotor 2 serves to separate the suction and discharge chambers. Upon rotation of impeller 1, fluid is continuously delivered in the direction of arrows a and b. Impeller 1 and rotor 2 are driven by two meshing gears keyed on the shafts of the impeller and rotor. The gears have the transmission ratio i₁₂=ω₁/ω₂=n₁/n₂=-1/3 where ω₁, ω₂, n₁ and n₂ are the angular velocities and speeds of impeller 1 and rotor 2.
$4002$THP,GP$