Device and method for attenuating energy along a conduit

Details Device and method for attenuating energy along a conduit Device and method for attenuating energy along a conduit

2008-02-08

2010-10-26

Enad, Elvin G (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S207000, C181S233000, C181S248000, C181S255000, C138S026000, C138S040000, C138S044000, C138S106000, C138S113000, C138S156000

Reexamination Certificate

active

07819222

ABSTRACT:
A device for attenuating energy along a conduit, comprising a first member having an essentially semi-cylindrical outer surface and a first cavity extending substantially longitudinally from end to end. A second member having an essentially semi-cylindrical outer surface is provided, with the outer radii of the first and second members being the same. The second member also has a longitudinally extending cavity. When the two members are secured to one another to form the device, the two cavities face one another to form a bore that extends from end to end and has respective opposed tapered portions having a circular cross-sectional configuration that decreases in diameter inwardly. The bore also has a central, cylindrical portion disposed between the tapered portions and having an axial length that is no greater than one third of the overall axial length of the device.

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