FIELD: machine engineering.
SUBSTANCE: rotary piston machine contains a rotor in the form of hollow profiled body with ring gear on its inner surface for transferring the torque to the gears of the two working shafts. The length of the section between the intersection of straight line passing through the centers of the shafts with rotor profile envelope is unchanged when it is rotated. The inner rotor surface has a profile corresponding to its outer envelope. The rotor body is made of thin-walled lightweight material and reinforced with internal ribbing in the form of several supporting rims-discs with the possibility of their free rolling along the roller-wheels grooves mounted on working shafts parallel to the gears.
EFFECT: invention allows to increase the mechanical efficiency of the machine by reducing rotor friction agaist the body and gear shafts which increases the specific productivity due to increased rotor rotation and durability of the above-mentioned volume type rotary machines.
2 cl, 9 dwg
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