Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1978-04-24
1979-09-18
Hix, L. T.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181255, 181270, 181272, 181281, 181282, F01N 712
Patent
active
041679873
ABSTRACT:
A multiple flow marine muffler constructed of resilient material having an elongated generally cylindrical hollow shell with reduced diameter inlet and outlet portions, and longitudinally spaced pairs of opposed baffles within the shell which define a plurality of chambers decreasing in axial length from the chamber adjacent the inlet portion to the chamber adjacent the outlet portion. The several pairs of baffles are so shaped, sized and oriented as to provide multiple flow paths for exhaust gases and cooling water through the muffler, namely, a central straight through path for engine idle condition, a first pair of undulating paths in side by side out of phase relation, and a second pair of undulating paths in side by side out of phase relation which are oriented in the cylindrical shell 90.degree. away from the first pair.
REFERENCES:
patent: 1087398 (1914-02-01), Persson
patent: 2112006 (1938-03-01), Abramson
patent: 2202272 (1940-05-01), Smith
patent: 2392247 (1946-01-01), Katcher
patent: 3187837 (1965-06-01), Beeching
patent: 3235003 (1966-02-01), Smith
patent: 3590947 (1971-07-01), Latch
Fuller Benjamin R.
Hix L. T,.
W. H. Salisbury & Co.
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