Device for reducing engine exhaust noise

Details Device for reducing engine exhaust noise Device for reducing engine exhaust noise

1976-04-05

1978-02-28

Tomsky, Stephen J.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181268, 181281, F01N 108, F01N 100

Patent

active

040760995

ABSTRACT:
An attenuator for reducing exhaust noise in engines is provided which includes an exhaust pipe having a flared outlet and a frustoconically shaped attenuator member mounted therein. In an alternate embodiment, vents are provided to increase efficiency. In a further alternate embodiment, the exhaust pipe is combined with a muffler.

REFERENCES:
patent: 1170807 (1916-02-01), Egan
patent: 1412416 (1922-04-01), O'Connor
patent: 1866004 (1932-07-01), Beamer
patent: 2458102 (1949-01-01), Schott et al.
patent: 2523260 (1950-09-01), Campbell
patent: 3196977 (1965-07-01), Sanders
patent: 3884323 (1975-05-01), Kunz, Jr.

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