Acoustic baffle

Details Acoustic baffle Acoustic baffle

2010-02-08

2011-12-20

San Martin, Edgardo (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S204000, C296S187020, C277S630000

Reexamination Certificate

active

08079442

ABSTRACT:
A heat expandable baffle for sealing automotive cavities comprising a carrier plate with an outer perimeter and a strand of a heat expandable material along the major part of the outer perimeter, this strand circumscribing a central section of the carrier plate which is not covered by the heat expandable material, the outer perimeter defining a mean plane limited by the outer perimeter, the central section of the carrier plate being bent away from the mean plane in a way that the point on the central section which has the greatest distance from the mean plane lies at a distance from the mean plane which is at least 5% of the maximum linear length of the carrier plate, and/or the central section having a lumped mass distribution.

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