Oil drain structure for oil mist separator
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United States of America Patent
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-
Feb 7, 2017
Grant Date -
Nov 27, 2014
app pub date -
Dec 10, 2012
filing date -
Dec 20, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An oil drain structure for an oil mist separator including a drain pipe extending from the oil mist separator into the internal combustion engine, the drain pipe having an oil discharge hole extending through a lower end portion of the drain pipe along an axial direction of the drain pipe, and a check valve including a valve body disposed below the lower end portion of the drain pipe, the valve body acting to open and close the oil discharge hole from a side of a lower surface of the lower end portion of the drain pipe, a valve head portion fitted into the drain pipe with a fine clearance as an orifice and being moveable in the axial direction of the drain pipe, and a stem portion extending through the oil discharge hole to connect the valve body and the valve head portion with each other.
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