Impeller 1 rotates about fixed axis A and has tooth d. When impeller 1 rotates, the tip of tooth d slides along the circular inside surface c of the housing and continuously delivers fluid in the direction of arrows a and b. The suction and discharge chambers are separated by lever-type hinged abutment 3, turning about fixed axis B and held to the impeller by spring 2.
$3996$THP,GP$