Acoustics – Sound-modifying means – Muffler – fluid conducting type
Reexamination Certificate
2006-08-08
2006-08-08
Martin, Edgardo San (Department: 2837)
Acoustics
Sound-modifying means
Muffler, fluid conducting type
C181S270000, C181S281000, C181S282000
Reexamination Certificate
active
07086497
ABSTRACT:
A flow tube for an induction system with a turbo charger includes a first tube half and a second tube half with a noise attenuation plate positioned between the halves. The noise attenuation plate includes a plurality of holes having varying diameters and depths. The first tube half, the second tube half, and the noise attenuation plate are integrally formed as a single piece during an injection molding process. The noise attenuation plate is folding along a first living hinge to overlap one of the first or second tube halves. The other of the first or second tube halves is folded along a second living hinge to overlap the noise attenuation plate forming a flow tube that defines a flow path. The noise attenuation plate serves as a low pass filter that attenuates high frequencies while allowing lower frequencies through.
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Cole Roderic
Letourneau Mark
Pettipiece Jason
Martin Edgardo San
Siemens VDO Automotive Inc.
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