Wave interference silencer

Details Wave interference silencer Wave interference silencer

1975-05-12

1976-04-06

Franklin, Lawrence R.

Acoustics

Auditorium

181 67, F01N 112

Patent

active

039483495

ABSTRACT:
A wave interference silencer assembly is disclosed for attenuating low frequencies without extension of the length of an inner tube component of a helical path wave interference silencer having a pair of exhaust flow tubes of equal length. A twisted ribbon component is twisted along its length to define an acoustical path length in one of the tubes longer than the length of the tube to produce attenuation of lower frequencies while retaining substantially equally divided exhaust volume flow through the first and second tubes.

REFERENCES:
patent: 2031451 (1936-02-01), Austin
patent: 2924296 (1960-02-01), Cook
patent: 3135350 (1964-06-01), Mattie
patent: 3580357 (1971-05-01), Whitney
patent: 3805495 (1974-04-01), Steel
patent: 3888331 (1975-06-01), Wang

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