Marine muffler

Details Marine muffler Marine muffler

1975-11-03

1977-01-04

Franklin, Lawrence R.

Acoustics

Auditorium

181 57, F01N 108

Patent

active

040007863

ABSTRACT:
A reactive type marine muffler which combines principles of both baffled construction and expansion chamber attenuation with a liquid flow path to provide improved sound attenuation over a broad spectrum of octave bands and a substantially lower dB(A). The baffles are preferably dome-shaped with their apices directed counter to the flow through the muffler and the expansion chambers are interconnected by a connecting tube mounted in a median baffle and projecting into adjoining expansion chambers.

REFERENCES:
patent: 981770 (1911-01-01), Kreis
patent: 1096970 (1914-05-01), Unke et al.
patent: 2416452 (1947-02-01), Marx
patent: 2511597 (1950-06-01), Marx
patent: 2516948 (1950-08-01), Bourne
patent: 3177971 (1965-04-01), Kelly
patent: 3220506 (1965-11-01), Vernet
patent: 3448824 (1969-06-01), Conard

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