Air-Gap Insulated Motor Vehicle Exhaust Duct
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United States of America Patent
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Issued Date -
Aug 28, 2008
app pub date -
Mar 30, 2006
filing date -
May 12, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An air-gap insulated vehicle exhaust duct has an outer pipe and an inner pipe, between which an air gap is formed. One of the two pipes has a flange fitted thereto, a seal being arranged between the flange and the other pipe, the seal largely sealing the air gap against the outside and, in addition, allowing relative axial and radial movement between the flange and the other pipe when thermal expansion occurs while driving.
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