Stamp formed muffler

Details Stamp formed muffler Stamp formed muffler

1987-06-08

1988-04-12

Fuller, B. R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181239, 181250, 181252, 181272, F01N 102, F01N 718

Patent

active

047368179

ABSTRACT:
A muffler is provided with a pair of stamp formed internal plates and a pair of stamp formed external shells. The internal plates define inlet and outlet tubes at least portions of which are provided with arrays of perforations or louvers. One or more tuning tubes may be stamp formed in the internal plates and one or more low frequency resonator chambers may be stamp formed from portions of either the internal plates or the external shells. The external shells may further be configured to define high frequency tuning chambers of a selected size and shape.

REFERENCES:
patent: 2484827 (1949-10-01), Harley
patent: 2860722 (1958-11-01), Gerstung
patent: 2943695 (1960-07-01), Jeffords
patent: 3140755 (1964-07-01), Tranel
patent: 3158222 (1964-11-01), Richmond
patent: 3176791 (1965-04-01), Betts et al.
patent: 3638756 (1972-02-01), Thiele
patent: 4108274 (1978-08-01), Snyder
patent: 4132286 (1979-01-01), Hasui et al.
patent: 4396090 (1983-08-01), Wolfhugel
patent: 4456091 (1984-06-01), Blanchot

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