Acoustics – Sound-modifying means – Muffler – fluid conducting type
Reexamination Certificate
2011-05-17
2011-05-17
Donels, Jeffrey (Department: 2832)
Acoustics
Sound-modifying means
Muffler, fluid conducting type
C181S249000, C181S250000, C181S256000, C181S257000
Reexamination Certificate
active
07942236
ABSTRACT:
An exhaust device for a straddle-type vehicle that satisfies the requirements of sound deadening characteristics and which has a reduced size is provided. The exhaust device for a straddle-type vehicle that includes an exhaust pipe connected to an engine and a silencer connected to the exhaust pipe. The silencer includes at least one resonator selected from a group consisting of a Helmholtz resonator and a side branch resonator. The resonator is packed with a sound absorbing material.
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Donels Jeffrey
Keating & Bennett LLP
Russell Christina
Yamaha Hatsudoki Kabushiki Kaisha
LandOfFree
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