Structural reinforcing member with ribbed thermally expansible foaming material
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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app pub date -
Oct 9, 2001
filing date -
Jan 31, 2000
priority date (Note) -
Abandoned
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Abstract
An expansible foaming reinforcing member for reinforcing a hollow structural member of an automobile, aircraft, boat, etc. is provided. The reinforcing member includes a synthetic, resin-based expansible reinforcing material secured to a carrier which maintains the reinforcing member at the desired location within the structural member until thermal expansion. The reinforcing material is formed of a thermally expansible composition which preferably has an expansion temperature similar to the temperatures achieved in specific stages of a particular manufacturing process (e.g., such as the temperature at which the paint bake or powder bake stage is carried out in the automobile manufacturing process). The reinforcing material of the inventive reinforcing member comprises a plurality of spaced-apart fins or ribs. During heat activation, heated air can travel between the ribs, thus allowing a greater surface area of the reinforcing material to be exposed to heat leading to improved expansion. The ribs can be configured to a shape corresponding to the cross-sectional shape of the cavity of the structural member, thus permitting the reinforcing member to be inserted into small, irregular shaped cavities.
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