Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1977-08-25
1979-01-02
Kelly, Donald G.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181269, F01N 100
Patent
active
041322860
ABSTRACT:
A muffler comprising: an upper case provided at the opposite ends with semi-cylindrical inlet and outlet sections respectively and having an outwardly raised central portion and an integral flange-like edge portion; a lower case joined at a flange-like edge portion to that of said upper case and substantially symmetrical with said upper case with respect to the underside thereof; an exhaust inlet tube forming member having at least a semi-cylindrical inlet section inserted in a cylindrical inlet formed by the inlet sections of said upper and lower cases joined together and a gutter-like guide section connected to said inlet section and being joined to said upper case, lower case or both of them, said forming member being provided adjacent to an end thereof with a perforated portion; and an exhaust outlet tube forming member having at least a semi-cylindrical outlet section fitted in a cylindrical outlet formed by the outlet sections of said upper and lower cases and a gutter-like guide section connected to said outlet section and being joined to said upper case, lower case or both of them; the exhaust inlet and outlet tubes formed in this way within the muffler body being communicated with each other through an exhaust gas passage formed between the outer surface of said individual component parts and the inner surface of said case and also through said passage, the end of said outlet tube being positioned behind the leading end of said inlet tube.
REFERENCES:
patent: 2787119 (1957-04-01), Giambruno
Hasui Hiroshi
Suyama Eizo
Hueschen Gordon W.
Kelly Donald G.
Nihon Radiator Co. Ltd.
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