Two piece cast ferrous crown piston for internal combustion engine
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United States of America Patent
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May 10, 2011
Grant Date -
Mar 20, 2008
app pub date -
Apr 25, 2007
filing date -
Oct 25, 2004
priority date (Note) -
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Abstract
This invention relates to an articulated two piece piston designed for reciprocable movement within a combustion chamber of an internal combustion engine. The piston has a crown of high-strength ferrous material that is precision cast net to finished dimensions on all inner and outer surfaces to provide a controlled thickness throughout to ensure mechanical and thermal consistency without any additional machining of the crown. The crown is attached to a separate skirt by the use of a wrist pin, wherein the skirt is made of ferrous or non-ferrous materials by casting or other means.
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