Vocal muffler
OwnerCarter R. Boyntoninventor
Life of this patent
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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.
Claims13
A vocal muffler for use by a human person, comprising a member having an exterior wall defining a chamber and provided with a first port opening to atmosphere and adapted to be placed over the mouth of a vocalizing person, said wall having a second port open to atmosphere and spaced from the first port, a valve cage within said chamber and supported by said wall adjacent to the second port, a valve movable in the cage in response to exhalation of said vocalizing person into the chamber though the first port to close the second port and movable upon inhalation by said person to open the second port, and said wall having further port means communicating the chamber to atmosphere in bypassing relation to the second port for conducting exhaled air out of the chamber during closure of the second port.
Dependencies are inferred from the claim text.