Patent ID: 8596240
Filing Date: 2013-12-03
Classification: F01L,F01M,F02B,F02F,Y10T

Abstract:
1. An internal combustion engine comprising: an engine block forming an enclosure defining an engine cylinder and a crankcase chamber; a piston; a crankshaft; a crank web rigidly attached to the crankshaft at a periphery of the crankshaft; a rod connecting the piston to the crank web for transfering linear motion of the piston into a circular motion of the crank web and crankshaft; an intake valve for receiving a mixture of fuel and air into the engine cylinder; an exhaust valve for expelling waste gasses from the engine; a carburetor or a throttle body for providing the mixture of fuel and air; a crankpin linking the rod to the crank web; an outboard starter having a starter shaft loosely attached to the crankpin by a yoke, a portion of the outboard starter disposed outside of the engine block, the yoke including a ‘U’ slot surrounding the crankpin on three sides with sufficient tolerance for the yoke to slide perpendicularly to the axis of the crankpin, in which the starter shaft has axially spaced apart first and second radial passages, an axial passage connecting and axially extending between the first and second radial passages, the second radial passage in fluid communication with an oil separator chamber, and wherein the piston, crankshaft, crank web, rod, and crankpin, being located inside the engine block.