Rotary pumps and engines

Claim 1

A ROTARY INTERNAL COMBUSTION ENGINE COMPRISING A MALE ROTOR HAVING A PLURALITY OF SUBSTANTIALLY CYCLODIAL SHAPED LOBES ABOUT THE CIRCUMFERENCE OF SAID ROTOR, AT LEAST ONE FEMALE ROTOR ADJACENT SAID MALE ROTOR HAVING ITS AXIS PARALLEL TO THE AXIS OF SAID MALE ROTOR, THE PERIPHERY OF SAID FEMALE ROTOR HAVING A PLURALITY OF CAVITIES THEREIN FOR RECEIVING SAID LOBES, SAID CAVITIES BEING SHAPED TO EFFECT SEALING WITH THE SIDES OF SAID LOBES AND BEING DEEPER THAN THE LENGTH OF SAID LOBES, A CASING HAVING RADIAL WALLS DEFINING INTERSECTING PARALLEL CYLINDRICAL BORES HOUSING SAID RESPECTIVE ROTORS, GEAR MEANS FOR SYNCHRONIZING THE ROTATION OF SAID ROTORS WHEREBY EACH OF THE CAVITIES IN SAID FEMALE ROTOR RECEIVES A LOBE OF THE MALE ROTOR DURING ROTATION, MEANS FOR INTRODUCING AN AIR AND FUEL MIXTURE BETWEEN SAID MALE ROTOR AND THE RADIAL CASING WALL WHEREBY DURING ROTATION SAID MIXTURE IS COMPRESSED BY THE LEADING FACE OF EACH MALE ROTOR LOBE AS IT APPROACHES A FEMALE ROTOR CAVITY, A SPARK PLUG IN SAID RADIAL CASING WALL, AND MEANS SYNCHRONIZED WITH THE ROTATION OF SAID ROTORS FOR FIRING SAID SPARK PLUG, SAID SPARK PLUG BEING LOCATED ADJACENT THE POSITION AT WHICH SAID FEMALE ROTOR CAVITY IS CLOSED BY SAID MALE ROTOR LOBES AND SAID FIRING MEANS BEING SYNCHRONIZED TO FIRE SPARK PLUG JUST PRIOR TO THE CLOSING OF SAID FEMALE ROTOR CAVITY.