Patent ID: 6031923
Filing Date: 2000-02-29
Classification: H04R

Abstract:
A Behind The Ear, In The Ear, All in The Ear, In The Canal or Completely In The Canal hearing aid consisting: a case, internal components, a battery door, a battery, a microphone, a speaker a volume control, a telephone coil activation switch, a telephone coil, and internal wires;the internal wires are made resistant to electromagnetic interference produced by cellular telephones in the 800 MHz to 2500 MHz frequency range by lining the case with an electrically conductive material;one or more inductors or ferrite devices are put in series with some of the internal wires or components;one or more capacitors are put in parallel with some of the internal wires or components;the internal components are shielded from electromagnetic interference with electrically conductive foil, and conductive gaskets.