Handheld four-stroke engine lubricating system
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United States of America Patent
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Jul 25, 2017
Grant Date -
Sep 10, 2015
app pub date -
Dec 31, 2011
filing date -
Nov 29, 2011
priority date (Note) -
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Abstract
A handheld four-stroke engine lubricating system comprises: an oil storage chamber formed by a bottom casing and a lower tank body, a crankshaft chamber formed by the lower tank body and an upper tank body, an air valve chamber formed by the upper tank body and a cylinder head cover, a cam chamber formed by the upper tank body and a cam chamber cover, and a tappet chamber connected between the air valve chamber and the cam chamber. The two sides of the upper and lower tank bodies are correspondingly provided with a first and a second oil inlet passages communicated with the oil storage chamber and the crankshaft chamber. The first and the second oil inlet passages are correspondingly provided with first and second check valves thereon. The first oil inlet passage is connected to a hose pressed against the bottom casing.
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