Expandable baffle apparatus

Details Expandable baffle apparatus Expandable baffle apparatus

1995-01-09

1996-04-09

Ahmad, Nasser

Stock material or miscellaneous articles

Structurally defined web or sheet

524041, 428 99, 428124, 428138, 4284744, 4284758, 4284763, 428913, 428920, B32B 500

Patent

active

055060250

ABSTRACT:
An expandable baffle apparatus for sealing a cavity of an automobile or the like includes a piece of heat expandable sealing material that is formed in a shape corresponding to the shape of the cross section of the cavity to be sealed. A support element supports the piece of sealing material at the predetermined cross section while the apparatus is subjected to an elevated activation temperature at which the sealing material expands to seal the cavity at the cross section. The support element is formed of a material having a melting point higher than the activation temperature, and includes an open lattice formed of a shape corresponding to the shape of the cross section of the cavity. The sealing material is supported on the lattice so that when the sealing material is activated, the material expands radially to fill the cross section of the cavity and longitudinally through the lattice.

REFERENCES:
patent: 4756945 (1988-07-01), Gibb
patent: 4874650 (1989-10-01), Kitoh
patent: 4898630 (1990-02-01), Kitoh
patent: 5266133 (1993-11-01), Hanley
patent: 5373027 (1994-12-01), Hanley

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