ROTARY MACHINE Russian patent published in 1996 - IPC

FIELD: mechanical engineering for handling working media in hydraulic drives of various machines. SUBSTANCE: rotary machine has housing and two engageable profiled rotors. Each profile of rotor has addendum part of tooth on its load-bearing end limited by epicycloid and section of involute adjoining pitch circle of rotor. Profile of tooth dedendum of rotor load-bearing end is limited by hyrocycloid enveloped with epicycloid of addendum part of other rotor and section of involute adjoining pitch circle of rotor. Line of contact of involute sections of both rotors is just section of straight line drawn at pressure angle Ltw till intersection of generatrices of addendum part epicycloid and dedendum hypocycloid. EFFECT: enhanced reliability. 2 cl, 2 dwg