Noise converter

Details Noise converter Noise converter

1985-07-31

1987-01-13

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181239, 181256, 181272, F01N 110

Patent

active

046357530

ABSTRACT:
A noise converter according to this invention is provided with gas conducting spiral passages defined between spirally twisted outer and inner tubes polygonal in cross-section. A gaseous body generating noise flows through the gas conducting passages from one end to the other. Since noise is generated by masses of particles of gaseous body having energy, particles of less energy move forward along a course near the center of each spiral passage whereas those of more energy along the other course near the outside of the passage due to centrifugal force, thereby dispersion and attenuation of energy being performed.

REFERENCES:
patent: 2031451 (1936-02-01), Austin
patent: 4339918 (1982-07-01), Michikawa

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