Patent ID: 8015956
Filing Date: 2011-09-13
Classification: F01B,F02B

Abstract:
1. A barrel engine comprising: a drive shaft; an undulating cam plate interconnected to the drive shaft for rotation therewith; a plurality of cylinders, each having a longitudinal axis that is generally parallel with the drive shaft, the axes of the cylinders being arranged in a generally circular manner about the drive shaft; a pair of guide rods corresponding to each cylinder of the engine, each rod having an outer surface extending longitudinally along an axis generally parallel with the axes of the cylinders; and a plurality of piston assemblies each comprising; a piston head slidably coupled to one of the cylinders for reciprocal movement along the axis of the cylinder; a guide block operatively coupled to the cam plate to cause axial displacement of the piston head in the cylinder in response to rotation of the cam plate with the drive shaft, the guide block further having a pair of longitudinal bores defined therethrough, the bores having inner walls, each of the bores slidably receiving the guide rod therethrough for guiding the piston head during reciprocal movement along the axis of the cylinder, each inner wall being spaced apart from the outer surface of a respective guide rod to define an oil reservoir therebetween, the oil reservoir extending generally continuously between opposite ends of the guide block.