Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1980-09-02
1982-11-30
Hix, L. T.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181272, F01N 108
Patent
active
043612067
ABSTRACT:
A muffler comprising a housing having inlet and outlet ends and having a venturi tube of smaller diameter than the housing disposed therewithin in communication with its outlet end is disclosed. The venturi comprises a first bell reducer, which reduces the cross-sectional area of the venturi to substantially half its original value, a straight tubular section of cross-sectional area equal to the reduced area and of as great length as possible within the venturi, and a gradually diverging section connecting the straight section of reduced area to a perforate tube, of substantially equal area as the inlet of the venturi and communicating with the outlet of the housing. Several distinct embodiments of the invention are disclosed, which vary by means causing additional diversion of the gases from their straight path.
REFERENCES:
patent: 992839 (1911-05-01), Wolle
patent: 1876861 (1962-09-01), Compo
patent: 1881051 (1932-10-01), Haas
patent: 2235705 (1941-03-01), Haas et al.
patent: 3672464 (1972-06-01), Rowley
patent: 3679024 (1970-09-01), Kirkland
patent: 4267899 (1981-05-01), Wagner et al.
Hix L. T,.
Stemco Inc.
Tarcza Thomas H.
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