AIR-GAP INSULATED EXHAUST MANIFOLD
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United States of America Patent
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Issued Date -
Jun 4, 2009
app pub date -
Feb 24, 2006
filing date -
Mar 14, 2005
priority date (Note) -
Abandoned
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Abstract
An air gap insulated exhaust manifold includes several inlet tubes which are fit into one another so as to be movable relative to each other and complement each other so as to constitute a collecting chamber. The inlet tubes are surrounded by an outlet tube, an air gap resulting between the inlet and outlet tubes. Two shell-type intermediate plates are provided in this air gap and complement each other so as to constitute a hollow body, which prevents that any leakage flows directly hit the outlet tube. The intermediate plates are produced by deep-drawing a pimpled foil.
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