Acoustic management of fluid flow within a duct

Details Acoustic management of fluid flow within a duct Acoustic management of fluid flow within a duct

2008-08-20

2011-11-22

San Martin, Edgardo (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C138S129000, C138S122000

Reexamination Certificate

active

08061477

ABSTRACT:
Apparatus and methods described herein provide for the management of noise associated with a duct. A sound-dampening apparatus is provided consisting of a duct through which a fluid flows, such as an air duct. A flexuous cord is helically wound around the inner or outer surface of the duct at a pitch corresponding to a selected acoustical frequency range associated with the fluid flow through the duct.

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PCT International Search Report and the Written Opinion of the International Search Authority in International Application No. PCT/US2009/050267 dated Oct. 21, 2009; 14 pages.

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