PISTON
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United States of America Patent
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Issued Date -
Sep 22, 2016
app pub date -
Dec 12, 2013
filing date -
Dec 12, 2013
priority date (Note) -
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Abstract
The piston includes a body having a hollow chamber defined therein, and a member inserted in the hollowed chamber to define an oil passage between an inner peripheral surface of the hollow chamber and an opposing outer peripheral surface of the member. This reduces the dead volume and, as a result, improves the compressibility. In addition, the increased cooling performance prevents the fusing of the piston to the cylinder.
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