Combined silencer and spark arrester

Details Combined silencer and spark arrester Combined silencer and spark arrester

2007-03-20

2007-03-20

Martin, Edgardo San (Department: 2837)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S268000, C181S269000, C181S272000, C181S275000

Reexamination Certificate

active

10323620

ABSTRACT:
A silencer for silencing exhaust gases includes an acoustic resonator chamber that serves as a spark arrester to trap burning carbon particles and prevent them passing to the atmosphere. The silencer has an exhaust gas inlet and an exhaust gas outlet. Exhaust gases pass from the inlet to the outlet through a first passage and into a first chamber. The first chamber communicates with an acoustic resonator chamber by means of a connecting passage. The connecting passage is positioned adjacent the first passage so that sparks in the exhaust enter the acoustic resonator chamber where they are trapped. The silencer thus avoids the need for a separate spark arrester, as required by prior art silencers.

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