1. A rotary combustion engine comprising housing means having at least two cavities with peripheral walls having a common major axis and a common minor axis, said housing means including an intermediate housing between one side of each cavity and outboard located housings on the other sides of said cavities, a one-piece crankshaft having an eccentric located in each said cavity, said crankshaft further having at least three main journals with one of said main journals located between said eccentrics and the other main journals located on the other sides of said eccentrics, bearing means rotatably supporting said crankshaft at each of said other main journals in said outboard located housings, a rotor rotatably mounted on each said eccentric, said rotors having concentrically arranged rotary phasing gears that rotate therewith with at least oNe of said rotary phasing gears on one of said rotors located adjacent said intermediate housing, an annular stationary phasing gear received about said crankshaft and secured to one of said outboard located housings and meshing with the other of said rotary phasing gears, and split carrierbearing-gear means mounted about said crankshaft and between said eccentrics in said intermediate housing, said split carrierbearing-gear means comprising an annular carrier with concentric inwardly and outwardly facing inner and outer cylindrical surfaces and an integral concentric stationary phasing gear at one end, said carrier being split into two halves along a longitudinal plane in which the center line of said carrier lies, a cylindrical bearing split into two halves along a longitudinal plane in which the center line of said bearing lies, each said bearing half mounted on the inner cylindrical surface of one of said carrier halves, said inner cylindrical surface sized to provide a crush fit on said bearing halves when said carrier halves are assembled, said intermediate housing having a cylindrical mounting hole sized to permit free passage of said eccentrics and provide a close fit with said outer cylindrical surface of said carrier halves, bolts for bolting said carrier halves together with said bearing halves in place about said one main journal while said one main journal is located to one side of said intermediate housing, said outer cylindrical surface of said carrier having a peripherally extending reduced radius portion on only one of said carrier halves to permit the assembled carrier halves to be inserted into said mounting hole and said integral stationary phasing gear brought into mesh with said one rotary phasing gear after one of said eccentrics has first been passed therethrough and said intermediate housing and said crankshaft are turned in a threaded manner relative to each other, and a pair of nesting dowels mounted in parallel guide holes in said intermediate housing at right angles to said major axis and in the direction of the major combustion gas pressure force transmitted by said rotor to said crankshaft, said nesting dowels at their inner ends received in pockets in said one carrier half located at equal distances from and on opposite sides of said minor axis, and means for engaging the outer ends of said nesting dowels so that said dowels are loaded in compression and locate the split of said carrier in line with said major axis and hold said outer cylindrical surface of said carrier on the other carrier half in position against the wall of said mounting hole in said intermediate housing to receive the combustion gas pressure force while permitting slight angular movement of said carrier and thus said integral stationary phasing gear to dampen gear tooth shock loading.

2. A rotary combustion engine comprising housing means having at least two cavities with peripheral walls having a common major axis and a common minor axis, said housing means including an intermediate housing between one side of each cavity and outboard located housings on the other sides of said cavities, a one-piece crankshaft having an eccentric located in each said cavity, said crankshaft further having at least three main journals with one of said main journals located between said eccentrics and the other main journals located on the other sides of said eccentrics, bearing means rotatably supporting said crankshaft at each of said other main journals in said outboard located housings, a rotor rotatably mounted on each said eccentric, said rotors having concentrically arranged rotary phasing gears that rotate therewith with at least one of said rotary phasing gears on one of said rotors located adjacent said intermediate housing, an annular stationary phasing gear received about said crankshaft and secured to one of said outboard located housings and meshing with the other of said rotary phasing gears, and split carrier-bearing-gear means mounted about said crankshaft and between said ecCentrics in said intermediate housing, said split carrier-bearing-gear means comprising an annular carrier with concentric inwardly and outwardly facing inner and outer cylindrical surfaces and an integral concentric stationary phasing gear at one end, said carrier being split into two halves along a longitudinal plane in which the center line of said carrier lies, a cylindrical bearing split into two halves along a longitudinal plane in which the center line of said bearing lies, each said bearing half mounted on the inner cylindrical surface of one of said carrier halves, said inner cylindrical surface sized to provide a crush fit on said bearing halves when said carrier halves are assembled, said intermediate housing having a cylindrical mounting hole sized to permit free passage of said eccentrics and provide a close fit with said outer cylindrical surface of said carrier halves, bolts for bolting said carrier halves together with said bearing halves in place about said one main journal while said one main journal is located to one side of said intermediate housing, said outer cylindrical surface of said carrier having a peripherally extending reduced radius portion on only one of said carrier halves to permit the assembled carrier halves to be inserted into said mounting hole and said integral stationary phasing gear brought into mesh with said one rotary phasing gear after one of said eccentrics has first been passed therethrough and said intermediate housing and said crankshaft are turned in a threaded manner relative to each other, and a pair of nesting dowels mounted in parallel guide holes in said intermediate housing at right angles to said major axis and in the direction of the major combustion gas pressure force transmitted by said rotor to said crankshaft, said nesting dowels at their inner ends received in pockets in said one carrier half located at equal distances from and on opposite sides of said minor axis, and spring means for engaging the outer ends of said nesting dowels so that said dowels are loaded in compression and locate the split of said carrier in line with said major axis and hold said outer cylindrical surface of said carrier on the other carrier half in position against the wall of said mounting hole in said intermediate housing to receive the combustion gas pressure force while permitting slight angular movement of said carrier and thus said integral stationary phasing gear to dampen gear tooth shock loading.

3. A rotary combustion engine comprising housing means having at least two cavities with peripheral walls having a common major axis and a common minor axis, said housing means including an intermediate housing between one side of each cavity and outboard located housings on the other sides of said cavities, a one-piece crankshaft having an eccentric located in each said cavity, said crankshaft further having at least three main journals with one of said main journals located between said eccentrics and the other main journals located on the other sides of said eccentrics, bearing means rotatably supporting said crankshaft at each of said other main journals in said outboard located housings, a rotor rotatably mounted on each said eccentric, said rotors having concentrically arranged rotary phasing gears that rotate therewith with at least one of said rotary phasing gears on one of said rotors located adjacent said intermediate housing, an annular stationary phasing gear received about said crankshaft and secured to one of said outboard located housings and meshing with the other of said rotary phasing gears, and split carrier-bearing-gear means mounted about said crankshaft and between said eccentrics in said intermediate housing, said split carrier-bearing-gear means comprising an annular carrier with concentric inwardly and outwardly facing inner and outer cylindrical surfaces and an integral concentric stationary phasing gear at one end, said carrier being split into two halves with interfaces on a longitudinal plane in which the center line of said carrier lies, a cylindrical bearing split into two halves along a longitudinal plane in which the center line of said bearing lies, each said bearing half mounted on the inner cylindrical surface of one of said carrier halves, said inner cylindrical surface of one of said carrier halves, said inner cylindrical surface sized to provide a crush fit on said bearing halves when said carrier halves are assembled, said intermediate housing having a cylindrical mounting hole sized to permit free passage of said eccentrics and provide a close fit with said outer cylindrical surface of said carrier halves, bolts through the mating interfaces for bolting said carrier halves together with said bearing halves in place about said one main journal while said one main journal is located to one side of said intermediate housing, one of said interfaces having radial reliefs axially located between the gear teeth and said bolts so that the bolt clamping load is positively transmitted to clamp the gear halves, a hollow dowel received about at least two of said bolts and received in counterbores in the mating interfaces to assure accurate mating of said carrier halves, said outer cylindrical surface of said carrier having a peripherally extending reduced radius portion on only one of said carrier halves to permit the assembled carrier halves to be inserted into said mounting hole and said integral stationary phasing gear brought into mesh with said one rotary phasing gear after one of said eccentrics has first been passed therethrough and said intermediate housing and said crankshaft are turned in a threaded manner relative to each other, and a pair of nesting dowels mounted in parallel guide holes in said intermediate housing at right angles to said major axis and in the direction of the combustion gas pressure force transmitted by said rotor to said crankshaft, said nesting dowels at their inner ends received in pockets in said one carrier half located at equal distances from and on opposite sides of said minor axis, and a flexible beam secured at a mid position to said intermediate housing and engaging on opposite sides thereof with the outer ends of said nesting dowels so that said dowels are loaded in compression and locate the split of said carrier in line with said major axis and hold said outer cylindrical surface of said carrier on the other carrier half in position against the wall of said mounting hole in said intermediate housing to receive the combustion gas pressure force while permitting slight angular movement of said carrier and thus said integral stationary phasing gear to dampen gear tooth shock loading.

4. A rotary combustion engine comprising housing means having at least two cavities with peripheral walls having a common major axis and a common minor axis, said housing means including an intermediate housing between one side of each cavity and outboard located housings on the other sides of said cavities, a one-piece crankshaft having an eccentric located in each said cavity, said crankshaft further having at least three main journals with one of said main journals located between said eccentrics and the other main journals located on the other sides of said eccentrics, bearing means rotatably supporting said crankshaft at each of said other main journals in said outboard located housings, a rotor rotatably mounted on each said eccentric, said rotors having concentrically arranged rotary phasing gears that rotate therewith, an annular stationary phasing gear received about said crankshaft and secured to one of said housings and meshing with each of said rotary phasing gears, and split carrier-bearing means mounted about said crankshaft and between said eccentrics in said intermediate housing, said split carrier-bearing means comprising an annular carrier with concentric inwardly and outwardly facing inner and outer cylindrical surfaces, said carrier being split into two halves along a longitudinal plane in which the center line of said carrier lies, a cyliNdrical bearing split into two halves along a longitudinal plane in which the center line of said bearing lies, each said bearing half mounted on the inner cylindrical surface of one of said carrier halves, said inner cylindrical surface sized to provide a crush fit on said bearing halves when said carrier halves are assembled, said intermediate housing having a cylindrical mounting hole sized to permit free passage of said eccentrics and provide a close fit with said outer cylindrical surface of said carrier halves, bolts for bolting said carrier halves together with said bearing halves in place about said one main journal while said one main journal is located to one side of said intermediate housing, said outer cylindrical surface of said carrier having a peripherally extending reduced radius portion on only one of said carrier halves to permit the assembled carrier halves to be inserted into said mounting hole after one of said eccentrics has first been passed therethrough and said intermediate housing and said crankshaft are turned in a threaded manner relative to each other, and a pair of nesting dowels mounted in parallel guide holes in said intermediate housing at right angles to said major axis and in the direction of the major combustion gas pressure force transmitted by said rotor to said crankshaft, said nesting dowels at their inner ends received in pockets in said one carrier half located at equal distances from and on opposite sides of said minor axis, and means for engaging the outer ends of said nesting dowels so that said dowels are loaded in compression and locate the split of said carrier in line with said major axis and hold said outer cylindrical surface of said carrier on the other carrier half in position against the wall of said mounting hole in said intermediate housing to receive the combustion gas pressure force and dampen any angular movement of said carrier.

5. A rotary combustion engine comprising housing means having at least two cavities with peripheral walls having a common major axis and a common minor axis, said housing means including an intermediate housing between one side of each cavity and outboard located housings on the other sides of said cavities, a one-piece crankshaft having an eccentric located in each said cavity, said crankshaft further having at least three main journals with one of said main journals located between said eccentrics and the other main journals located on the other sides of said eccentrics, bearing means rotatably supporting said crankshaft at each of said other main journals in said outboard located housings, a rotor rotatably mounted on each said eccentric, said rotors having concentrically arranged rotary phasing gears that rotate therewith, an annular stationary phasing gear received about said crankshaft and secured to one of said housings and meshing with each of said rotary phasing gears, and split carrier-bearing means mounted about said crankshaft and between said eccentrics in said intermediate housing, said split carrier-bearing means comprising an annular carrier with concentric inwardly and outwardly facing inner and outer cylindrical surfaces, said carrier being split into two halves along a longitudinal plane in which the center line of said carrier lies, a cylindrical bearing split into two halves along a longitudinal plane in which the center line of said bearing lies, each said bearing half mounted on the inner cylindrical surface of one of said carrier halves, said inner cylindrical surface sized to provide a crush fit on said bearing halves when said carrier halves are assembled, said intermediate housing having a cylindrical mounting hole sized to permit free passage of said eccentrics and provide a close fit with said outer cylindrical surface of said carrier halves, bolts for bolting said carrier halves together with said bearing halves in place about said one main journal while said one main journal is located to one side of said intermediate housing, said outer cylindrical surface of said carrier having a peripherally extending reduced radius portion on only one of said carrier halves to permit the assembled carrier halves to be inserted into said mounting hole after one of said eccentrics has first been passed therethrough and said intermediate housing and said crankshaft are turned in a threaded manner relative to each other, and a pair of nesting dowels mounted in parallel guide holes in said intermediate housing at right angles to said major axis and in the direction of the major combustion gas pressure force transmitted by said rotor to said crankshaft, said nesting dowels at their inner ends received in pockets in said one carrier half located at equal distances from and on opposite sides of said minor axis, and spring means for engaging the outer ends of said nesting dowels so that said dowels are loaded in compression and locate the split of said carrier in line with said major axis and hold said outer cylindrical surface of said carrier on the other carrier half in position against the wall of said mounting hole in said intermediate housing to receive the combustion gas pressure force and dampen any angular movement of said carrier.

6. A rotary combustion engine comprising housing means having at least two cavities with peripheral walls having a common major axis and a common minor axis, said housing means including an intermediate housing between one side of each cavity and outboard located housings on the other sides of said cavities, a one-piece crankshaft having an eccentric located in each said cavity, said crankshaft further having at least three main journals with one of said main journals located between said eccentrics and the other main journals located on the other sides of said eccentrics, bearing means rotatably supporting said crankshaft at each of said other main journals in said outboard located housings, a rotor rotatably mounted on each said eccentric, said rotors having concentrically arranged rotary phasing gears that rotate therewith with at least one of said rotary phasing gears on one of said rotors located adjacent said intermediate housing, an annular stationary phasing gear received about said crankshaft and secured to one of said housings and meshing with each of said rotary phasing gears, and split carrier-bearing means mounted about said crankshaft and between said eccentrics in said intermediate housing, said split carrier-bearing means comprising an annular carrier with concentric inwardly and outwardly facing inner and outer cylindrical surfaces, said carrier being split into two halves with interfaces on a longitudinal plane in which the center line of said carrier lies, a cylindrical bearing split into two halves along a longitudinal plane in which the center line of said bearing lies, each said bearing half mounted on the inner cylindrical surface of one of said carrier halves, said inner cylindrical surface sized to provide a crush fit on said bearing halves when said carrier halves are assembled, said intermediate housing having a cylindrical mounting hole sized to permit free passage of said eccentrics and provide a close fit with said outer cylindrical surface of said carrier halves, bolts through the mating interfaces for bolting said carrier halves together with said bearing halves in place about said one main journal while said one main journal is located to one side of said intermediate housing, a hollow dowel received about at least two of said bolts and received in counterbores in the mating interfaces to assure accurate mating of said carrier halves, said outer cylindrical surface of said carrier having a peripherally extending reduced radius portion on only one of said carrier halves to permit the assembled carrier halves to be inserted into said mounting hole, after one of said eccentrics has first been passed therethrough and said intermediate housing and said crankshaft are turned in a threaded manner relative to each other, and a pair of nesting dowels mounted in parallel guide holes in said intermediatE housing at right angles to said major axis and in the direction of the combustion gas pressure force transmitted by said rotor to said crankshaft, said nesting dowels at their inner ends received in pockets in said one carrier half located at equal distances from and on opposite sides of said minor axis, and a flexible beam secured at a mid position to said intermediate housing and engaging on opposite sides thereof with the outer ends of said nesting dowels so that said dowels are loaded in compression and locate the split of said carrier in line with said major axis and hold said outer cylindrical surface of said carrier on the other carrier half in position against the wall of said mounting hole in said intermediate housing to receive the combustion gas pressure force and dampen any angular movement of said carrier.