ROTARY MACHINE Russian patent published in 1996 - IPC

FIELD: rotary machines used as engines or pumps. SUBSTANCE: mounted concentrically in cylindrical housing provided with intake and discharge ports is profiled rotor; at least one revolving damper-piston is mounted concentrically in segment slot of housing; rotor of damper-piston rotates in one direction only. Inner surface of housing and surfaces of rotor and damper-piston form working chamber of varying volume. Mounted concentrically in other slot of housing is second revolving damper-piston engageable with first damper-piston. Dampers-pistons rotate in opposite directions. Rotor and dampers-pistons are interconnected by means of gear drive. EFFECT: enhanced reliability. 3 dwg