Rotary piston engine

Claim 1

A ROTARY-PISTON INTERNAL COMBUSTION ENGINE OF TROCHOIDAL CONSTRUCTION, COMPRISING: HOUSING MEANS PROVIDED WITH INTERNAL SURFACE MEANS AND LATERAL HOUSING PARTS, ECCENTRIC SHAFT MEANS PROVIDED WITH ECCENTRIC MEANS, POLYGONAL PISTON MEANS HAVING RADIAL AND AXIAL SEAL MEANS AND ROTATABLY SUPPORTED ON SAID ECCENTRIC MEANS, SAID PISTON MEANS SLIDING WITH THE RADIAL SEAL MEANS THEREOF ARRANGED AT THE PISTON CORNERS ALONG THE INNER SURFACE MEANS AND WITH THE AXIAL SEAL MEANS THEREOF ARRANGED AT THE END WALLS THEREOF, WHICH INCLUDE OIL SEAL RING MEANS, ALONG THE LATERAL PARTS, OIL PUMP MEANS CONSTRUCTED AS GEAR PUMP AND RIGIDLY ARRANNGED AT THE END SURFACE OF THE ECCENTRIC MEANS AT LEAST ON ONE SIDE OF THE PISTON MEANS BETWEEN THE PISTON END WALL AND THE CORRESPONDING LATERAL HOUSING PART, A GEAR WHEEL RIGIDLY SECURED TO SAID HOUSING MEANS AND DISPOSED SUBSTANTIALLY CONCENTRICALLY TO THE ECCENTRIC SHAFT MEANS, AND DRIVE MEANS FOR DRIVING SAID PUMP MEANS INCLUDING FURTHER GEAR WHEEL IN MESHING ENGAGEMENT WITH SAID FIRST-MENTIONED GEAR WHEEL, SAID OIL PUMP MEANS BEING OPERABLE TO DRAW OIL OUT OF THE SPACES BETWEEN A PISTON END WALL AND THE CORRESPONDING LATERAL HOUSING PART WITHIN THE AREA OF THE OIL SEAL RING MEANS AND FORCIBLY DISCHARGING THE SAME INTO A DISCHARGE BORE PROVIDED WITHIN SAID ECCENTRIC MEANS AND WITHIN SAID ECCENTRIC SHAFT MEANS.