Abstract: A rotary internal combustion engine, including all types of vehicles and equipments or apparatus provided with such rotary engines, or machines which principally consist of a two, three or four, either radially curved or flat, apex rotor and a radially arcaded or curved epicyclic or two or three lobed epitrochoid housing cavity, in which construction such rotary engine, the rotor (21 of FIG. 1), has its rotations integrated with the rotations of the main crankshaft (24 of FIG. 1), through the intermeshing gears train (37, 38, 37, 48, 51, 52 of FIG. 1) or through the planetary gears system or epicyclic gears train (324, 348, 459, 360, 361, 362 of FIGS. 5 and 6 and 362/I, 362/II of FIGS. 9 and 10) by which rotor will be rotated or rotates in accordance to its specific basic speed ratio (such as 1:2 for bi-apex rotor, 1:3 for tri-apex rotor, etc.

Abstract: A rotary internal combustion engine, including all types of vehicles and equipments or apparatus provided with such rotary engines, or machines which principally consist of a two, three or four, either radially curved or flat, apex rotor and a radially arcaded or curved epicyclic or two or three lobed epitroichoid housing cavity, in which construction such rotary engine, the rotor (21 of FIG. 1), has its rotations integrated with the rotations of the main crankshaft (24 of FIG. 1), through the intermeshing gears train (37, 38, 37, 48, 51, 52 of FIG. 1) or through the planetary gears system or epicyclic gears train (324, 348, 359, 360, 361, 362 of FIGS. 5 and 6 and 362/I, 362/II of FIGS. 9 and 10) by which rotor will be rotated or rotates in accordance to its specific basic speed ratio (such as 1:2 for bi-apex rotor, 1:3 for tri-apex rotor, etc.

Abstract: A rotary internal combustion engine which principally consists of a two, three or four, either radially curved or flat, apex rotor and a radially arcaded or curved epicyclic or two or three lobed epitrochoid housing cavity, in which construction such rotary engine, the rotor has its rotations integrated with the rotations of the main crankshaft through the intermeshing gears by which the rotor will be rotated in accordance to its specific basic speed ratio so thereafter the rotor rotates with an effective clearance during all relative rotations and therefore is able to maintain such permanent distance between the housing and the rotor.

Abstract: A rotary engine, such as a rotary internal combustion engine, a rotary pump, a rotary compressor or the like, comprises a housing defining a cavity with a n-lobed epitrochoidal shaped wall, a n+l lobed rotor within said cavity and movable in a planetary fashion, n being 1,2,3. . . and a main crank shaft with an eccentric supporting said rotor. The engine further comprises a transmission installed between the rotor and the main crank shaft, the transmission ratio of which being based on a certain ratio between the rotation of the rotor and the rotation of the main crank shaft such that during rotation of the rotor the shape of the outer envelope of the rotating rotor is exactly the same as the shape of the wall of the cavity.

Abstract: A rotary internal combustion engine which principally consists of a two, three or four, either radially curved or flat, apex rotor and a radially arcaded or curved epicyclic or two or three lobed epitrochoid housing cavity, in which construction such rotary engine, the rotor has its rotations integrated with the rotations of the main crankshaft through the intermeshing gears by which the rotor will be rotated in accordance to its specific basic speed ratio so thereafter the rotor rotates with an effective clearance during all relative rotations and therefore is able to maintain such permanent distance between the housing and the rotor.