Acoustics – Sound-modifying means – Muffler – fluid conducting type
Reexamination Certificate
2005-12-29
2008-09-16
San Martin, Edgardo (Department: 2837)
Acoustics
Sound-modifying means
Muffler, fluid conducting type
C181S252000, C181S227000
Reexamination Certificate
active
07424931
ABSTRACT:
A muffler for a motorcycle, the muffler including an outer tube and an inner tube disposed substantially within the outer tube. The inner tube includes a first end adapted to receive the exhaust gases from the engine, a second end opposite the first end adapted to release the exhaust gases to the environment, and first and second apertures positioned between the ends. The muffler also includes a mesh tube disposed between the outer tube and the inner tube. The mesh tube defines a chamber between the inner tube and the mesh tube such that the exhaust gases exit the inner tube through the first aperture into the chamber, and exit the chamber into the inner tube through the second aperture. The muffler also includes a noise attenuating material disposed between the mesh tube and the outer tube.
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Harley-Davidson Motor Company Group Inc.
Martin Edgardo San
Michael & Best & Friedrich LLP
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