Muffler construction

Details Muffler construction Muffler construction

1988-08-01

1989-10-10

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181255, 181258, F01N 110

Patent

active

048725285

ABSTRACT:
A muffler construction having improved sound attenuation characteristics. A tapered tubular metal screen is disposed within the outlet conduit of a muffler and has a axis concentric with the axis of the conduit. The screen has a closed end preferably facing in a downstream direction with respect to gas flow, and the opposite open end of the screen is attached to the conduit. The screen acts to reduce the sound levels without increasing the overall size of the muffler and with a minimum increase of weight.

REFERENCES:
patent: 1575657 (1926-03-01), Straussler
patent: 1922848 (1933-08-01), Harley
patent: 3016108 (1962-01-01), Myddelton
patent: 3112007 (1963-11-01), Ludlow et al.
patent: 3243010 (1966-03-01), Flynn
patent: 3406501 (1968-10-01), Watkins
patent: 3675398 (1972-07-01), Glarrizzo
patent: 3823743 (1974-07-01), King
patent: 3884655 (1975-05-01), Coop
patent: 4530418 (1985-07-01), Currie
patent: 4705138 (1987-11-01), Reese

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