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Hearing aid device

  • US 4,291,203 A
  • Filed: 09/11/1979
  • Issued: 09/22/1981
  • Est. Priority Date: 09/11/1979
  • Status: Expired due to Term
First Claim
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1. A hearing aid device, comprising an ear plug for insertion into the auditory canal of the user'"'"'s ear, a microphone having a body portion and sound inlet portion that projects outwardly of said body portion, the body portion of said microphone being completely embedded in said ear plug so as to be located in said auditory canal and said sound inlet portion projecting outwardly of said ear plug for being directly exposed to transmitted sound waves, a housing for location in close proximity to the ear of the user and having an amplifier located therein, said amplifier and microphone being electrically interconnected for the electrical transmission of sound waves received by said microphone to said amplifier, a transducer located in said housing and being electrically connected to said amplifier, and a sound tube, one end of which extends through said plug for communication with said auditory canal and the other end of which projects into said housing for communication with said transducer, wherein the amplified sound received from said microphone is transmitted by said transducer and sound tube to the auditory canal of the user, the interior of said sound tube being free and unobstructed to provide for fidelity of sound as transferred through said sound tube to the auditory canal of the user, electrical wires interconnecting said microphone and amplifier, and a tube formed independently of said sound tube and carrying the electrical wires therein that interconnect said microphone and said amplifier.

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