Multiple arrangement of rotary combustion engines

Claim 1

A DOUBLE ROTARY COMBUSTION ENGINE HAVING A CYCLE WHICH INCLUDES THE FOUR STROKES OF INTAKE, COMPRESSION, EXPANSION AND EXHAUST; SAID ENGINE COMPRISING A HOUSING HAVING TWO SPACED CAVITIES WITH THE INNER SURFACE OF THE PERIPHERAL WALL OF EACH CAVITY HAVING A TWO-LOBE PRFILE AND WITH THE TWO-LOBE PROFILES OF SAID CAVITIES BEING AXIALLY ALINED; A SHAFT EXTENDING CO-AXIALLY THROUGH SAID CAVITIES AND HAVING A PAIR OF AXIALLY-SPACED ECCENTRIC PORTIONS, ONE FOR EACH OF SAID CAVITIES; A PAIR OF ROTORS EACH JOURNALED ON ONE OF SAID ECCENTRIC PORTIONS FOR PLANETARY ROTATION WITHIN THE ASSOCIATED CAVITY, SAID TWO ECCENTRIC PORTIONS BEING ROTATIVELY OFFSET 180* AND EACH ROTOR HAVING THREE CIRCUMFERENTIALLY-SPACED APEX PORTIONS, EACH HAVING SEALING ENGAGEMENT WITH SAID PERIPHERAL WALL TO FORM A PLURALITY OF WORKING CHAMBERS BETWEEN SAID ROTOR AND PERIPHERAL WALL WHICH ROTATE ABOUT SAID SHAFT AND VARY IN VOLUME DURING ROTOR ROTATION WITH THE ROTATIVE POSITION OF EACH ROTOR ABOUT ITS AXIS BEING ROTATIVELY OFFSET 60* FROM THE ROTATIVE POSITION OF THE OTHER ROTOR ABOUT ITS AXIS, EACH HOUSING CAVITY HAVING AN AIR INLET PORT AND AN EXHAUST GAS OUTLET PORT FOR SAID WORKING CHAMBERS WITH SAID INLET PORTS BEING DISPOSED ONE BEHIND THE OTHER WHEN VIEWED IN A DIRECTION PARALLEL TO THE SHAFT AXIS AND SAID OUTLET PORTS BEING SIMILARLY DISPOSED; AND GEARING DISPOSED ONLY AT THE REMOTE END FACES OF THE TWO ROTORS FOR COUPLING THE ROTORS TO THE HOUSING, SAID GEARING INCLUDING A PAIR OF INTERNAL GEARS, ONE FOR EACH ROTOR WITH EACH INTERNAL GEAR BEING SECURED TO ITS ROTOR AT AN END FACE THEREOF REMOTE FROM THE OTHER ROTOR AND WITH THE TWO ADJACENT END FACES OF THE ROTOR BEING FREE OF ANY GEARING, AND A PAIR OF ANNULAR FIXED GEARS, ONE FOR AND DISPOSED IN MESHING ENGAGEMENT WITH EACH OF SAID INTERNAL GEARS WITH EACH FIXED GEAR BEING SECURED TO THE HOUSING AND BEING CO-AXIALLY DISPOSED ABOUT THE ADJACENT PORTION OF THE SHAFT, THE DIAMETER OF THE SHAFT SAID ECCENTRIC PORTIONS BEING GREATER THAN THE INTERNAL DIAMETER OF SAID ANNULAR FIXED GEARS.