ALUMINUM FOAM CORE PISTON WITH COAXIAL LASER BONDED AEROGEL/CERAMIC HEAD
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United States of America Patent
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Issued Date -
May 7, 2020
app pub date -
Dec 19, 2019
filing date -
Jul 14, 2017
priority date (Note) -
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Abstract
A method of forming an insulated composite piston head may include: creating a preformed aluminum or aluminum alloy foam core; suspending the preformed foam core in a piston head mold; forming a molded piston head and removing it from the mold; depositing an insulating material on at least one surface of the molded piston head; performing at least one machining operation on the molded piston head so it conforms to a predetermined specification for the insulated composite piston head; and optionally applying a lubricious piston coating to at least a portion of the outer surface of the insulated composite piston head.
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