Transmitter with improved sensitivity and shielding

Patent No. 9,083,388

Issued: July 14, 2015
Filed: March 12, 2013
Term Extension: 61 days

Inventor: John W. Parkins (Ithaca, NY)
Assignee: Red Tail Hawk Corporation (Ithaca, NY)


A magnetic field transmitter, especially a transmitter used in conjunction with wireless communications earplugs. In one embodiment, a plate of magnetic material is used behind a coil of electrical conductor to improve the efficiency of the transmitter and to provide electrical and magnetic shielding. The specific dimensions and characteristics of the preferred embodiment of the transmitter described herein provide for efficient wireless communications.

Reference to Related Applications

This application claims one or more inventions which were disclosed in Provisional Application No. 61/694,481, filed Aug. 29, 2012, entitled "Transmitter with Improved Sensitivity and Shielding". The benefit under 35 USC .sctn.119(e) of the U.S. provisional application is hereby claimed, and the aforementioned application is hereby incorporated herein by reference.


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