Secondary acoustic attenuator for vehicle
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United States of America Patent
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Oct 26, 2004
Grant Date -
May 27, 2004
app pub date -
Nov 27, 2002
filing date -
Nov 27, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An acoustic barrier systems that reduces the amount of noise entering the passenger compartment of a vehicle includes a secondary acoustic attenuator that extends from a primary acoustic barrier to a vehicle component case to envelop space around a conduit passing from the engine compartment to the component case. In one embodiment, the secondary acoustic attenuator extends from the primary acoustic barrier to the component case, with the secondary acoustic attenuator enveloping space around the conduit between the vehicle component case and the primary acoustic barrier. In another embodiment, the secondary acoustic attenuator is hingedly connected to the primary acoustic barrier to allow the secondary acoustic attenuator to be pivoted, from an orientation that allows installation of the vehicle component case, to another orientation wherein the secondary acoustic attenuator engages the vehicle component case to envelop space around the conduit between the vehicle component case and the primary acoustic barrier.
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