Rotary block engine

In a rotary-block engine comprising a rotatable cylinder block having a plurality of radially mounted cylinders therein, a main shaft supporting said cylinder block and rotatable with said cylinder block, each of said plurality of cylinders having a reciprocating piston mounted therein which is moved in response to the explosion of a combustion gas in the combustion chamber of the cylinder, a plurality of secondary shafts, one for each of said plurality of cylinders, for rotatably mounting thereon the plurality of reciprocating pistons, and a stationary housing rotatably mounting therein said main shaft and said cylinder block, wherein the improvement comprises:

• said main shaft being an eccentric shaft and mounting said cylinder block on the eccentric thereof so that a point on said cylinder block traces a path in the form of an epitrochoid, each of said plurality of secondary shafts also being an eccentric shaft, each of said pistons being mounted on the eccentric of its respective secondary shaft so that a point on the piston will trace a path in the form of a hypotrochoid, means for fixing the spacing between said main shaft and said cylinder block and radially fixing the plurality of secondary shafts with respect to said main shaft, each of said secondary shafts rotating at a speed less than the speed of said main shaft and each of said pistons having a speed about said main shaft that is also less than the speed of said main shaft, and means for controlling the movement of said pistons so that they move in said hypotrochoid manner.