Circular rotor 1 rotates about fixed axis A, eccentrically located with respect to the geometric axis of housing 4. Vanes 2, having flat heads a at one end, reciprocate in guide slots b of rotor 1. When rotor 1 rotates, heads a of vanes 2 slide along stationary circular eccentric 3 an deliver the fluid (liquid or gas) in the direction of the arrows. The suction and discharge chambers are formed between vanes 2, housing 4 and rotor 1.
$3832$LHP,RP$