PISTON MACHINE Russian patent published in 2000 - IPC

FIELD: using piston machines as engine, pump or compressor. SUBSTANCE: proposed machine has housing, cylinder with piston and rod, shaft and two cam rotors provided with wave-shaped closed grooves on parallel walls. Ball of ball-and-socket joint mounted on end of rod is engageable with grooves of rotors; one rotor is rigidly mounted on shaft and other rotor is mounted on shaft by means of bush mounted rigidly together with it; this bush is supported by two ball bearings of shaft; each rotor has four cam projections and shapes of their wave-like grooves copy outer profiles of rotors; transversal profile of each groove is formed by arc of radius of ball of ball-and-socket joint of rod and rectangular recess in center portion of groove. EFFECT: increased productivity; enhanced reliability. 1 dwg