Vocal muffler

Details Vocal muffler Vocal muffler

1987-09-08

1988-12-20

Fuller, B. R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181 21, F01N 700

Patent

active

047920130

ABSTRACT:
A vocal muffler for muffling the vocalization of a human, especially a crying baby. The muffler comprises a globe-like member having a chamber provided with a port positionable over the baby's mouth and via which the baby's crying enters the chamber to exit through muffled port means in bypassing relation to an inhalation port. A valve in the chamber opens the inhalation port during inhalation by the baby and closes the port in response to exhalation. The bypassing port means includes sound-attenuating means for muffling the baby's cries. The valve is contained loosely in a cage adjacent to the inhalation port so that when the muffler is not used as a muffler, the ball will rattle in the cage and the muffler serves as a toy rattle.

REFERENCES:
patent: 1776584 (1930-09-01), Gerlach, Jr.
patent: 2490138 (1949-12-01), Kettler
patent: 3796842 (1974-03-01), Guille

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