Patent ID: 6363904
Filing Date: 2002-04-02
Classification: F01M,F02B,F02F,F05C

Abstract:
A four-stroke cycle internal combustion engine for use with an operator-carried, multiple-position implement comprising an engine housing having an upper cylinder housing portion and a lower crankcase housing portion for engine lubricating oil;a crankshaft journalled for rotation in the crankcase housing portion; an oil mist generator drivably connected to the crankshaft including a splasher engageable with the lubricating oil as it is driven by the crankshaft, the splasher thereby generating an oil mist in the crankcase housing portion; a camshaft connected drivably to the crankshaft, a cam case, the camshaft being journalled in the cam case; an oil mist flow passage in the camshaft, a radial port in the camshaft connecting the oil mist flow passage to the cam case; the oil mist flow passage communicating with the crankcase housing portion whereby liquid oil in the oil mist generated by the splasher is transferred to the cam case; and a valve chamber housing secured to the cylinder housing portion, a valve chamber lubrication passage means for transferring oil mist from the oil mist flow passage in the camshaft to the valve chamber housing.