Marine muffler with angularly disposed internal baffle

Details Marine muffler with angularly disposed internal baffle Marine muffler with angularly disposed internal baffle

2011-03-15

2011-03-15

San Martin, Edgardo (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S272000, C181S281000, C181S233000

Reexamination Certificate

active

07905322

ABSTRACT:
A marine muffler comprises an elongate cylindrical housing having an inlet and an outlet and defining an internal volume partitioned, by an angularly disposed internal baffle, into a lower chamber in communication with the inlet and an upper chamber in communication with the outlet. A vertically disposed duct is insertably secured to the baffle to allow exhaust gas and exhaust cooling water to flow from the lower inlet chamber to upper outlet chamber. The exhaust duct may preferably be further adapted with internal structure forming a plurality of individual flow conduits or passages. The duct is preferably positioned such that a plurality of flow passage inlets are positioned in proximity to the lower cylindrical housing wall, with flow passage outlets positioned in proximity to the upper housing wall. The lower duct wall may further be adapted with sidewall apertures for improving exhaust flow dynamics therethrough.

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