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US 4,361,734 AGranted
Hearing aid
OwnerArthur R. Kahninventor
Life of this patent
Estimating the term…
Abstract
An improved hearing aid which is composed of a first and a second hearing aid amplifier circuit interconnected by a sound conducting tube and wherein the second hearing aid amplifier circuit includes a sound conducting tube to provide sound to the ear of a wearer and wherein the hearing aid amplifier circuits are housed within an ear mold housing.
Claims1
A hearing aid device composed of a first hearing aid amplifier including a microphone, a receiver and means conducting the two together including amplifier means, filter means, and a summation amplifier;
- a second hearing aid amplifier circuit including a hearing aid device composed of a first hearing aid amplifier including a microphone, a receiver and means conducting the two together including amplifier means, filter means, and a summation amplifier;
- a sound conducting tube interconnecting the receiver of the first hearing aid and the microphone of the second hearing aid to conduct sound from the first hearing aid amplifier circuit to the second hearing aid amplifier circuit to be reamplified by the second hearing aid amplifier circuit;
- and
- an ear mold;
- a housing for the hearing aid amplifier circuits and the tube and a sound conducting tube interconnecting the second hearing aid receiver and the ear mold to provide dual amplified sound to the ear of a wearer.
2 more elements
Dependencies are inferred from the claim text.