Circular rotor 1 rotates about eccentrically located fixed axis A, coinciding with the geometric axis of housing 3. Rotor 1 slides along the internal surface of housing 3. Connecting rod 4 is connected by turning dpairs B and C to rotor 1 and to rocker arm 2 which oscillates about fixed axis D. When rotor 1 rotates, liquid is delivered in the direction of the arrows. The suction and discharge chambers are separated by abutment a which is rigidly attached to rocker arm 2.
$3836$LHP,RP$