Double walled baffle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 7, 2002
Grant Date -
N/A
app pub date -
Mar 17, 2000
filing date -
Mar 17, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An expandable baffle for sealing a cavity of an automobile is provided. The baffle includes a thermally expandable sealing material which has an expansion temperature similar to the temperatures achieved in specific stages of the automotive manufacturing processes (e.g., the paint bake stage). The inventive baffle further includes a support for the sealing material which maintains the material at the desired location within the cavity until thermal expansion. The support is formed of a material having a melting point higher than the thermal expansion temperature of the sealing material. In one embodiment, the support comprises a pair of solid, spaced-apart sidewalls that 'bow' upon expansion of the sealing material. In an alternate embodiment, the sidewalls include a plurality of openings formed therein through which the sealing material flows during thermal expansion. The inventive baffles are useful for providing noise attenuation and for sealing the cavity from moisture and contaminants while providing a limited degree of structural reinforcement.
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