Circular rotor 1 rotates about fixed axis A, coinciding with the geometric axis of housing 2. Vanes 3 turn about axes B. When the rotor rotates, vanes 3 are held against the housing by centrifugal force or springs (not shown) and deliver liquid in the direction of the arrows. Vanes 3 are retracted into slots a in rotor 1.
$3790$LHP,RP$