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Wireless Earplug with Improved Sensitivity and Form Factor

  • US 20100296667A1
  • Filed: 07/08/2010
  • Published: 11/25/2010
  • Est. Priority Date: 08/31/2006
  • Status: Active Grant
First Claim
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1. A wireless communications earplug for use with a magnetic field transmitter, comprising:

  • a) a receiver comprising a coil of wire wound upon a bobbin of magnetic material; and

    b) a speaker having a case at least partially made of magnetic material, an acoustic output and an electrical input coupled to the wire of the receiver;

    wherein the bobbin of the receiver is mounted in close proximity to the case of the speaker to increase magnetic flux through the receiver.

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