Transmitter with improved sensitivity and shielding

Patent No. 9,548,537

Issued: January 17, 2017
Filed: June 9, 2015
Term Extension: 52 days

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


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 is a continuation patent application of copending application Ser. No. 13/796,480, filed Mar. 12, 2013, now patent 9,083,388, entitled "Transmitter with Improved Sensitivity and Shielding", which claimed benefit under 35 USC .sctn.119(e) of provisional application No. 61/694,481, filed Aug. 29, 2012, entitled "Transmitter with Improved Sensitivity and Shielding". The aforementioned applications are hereby incorporated herein by reference.


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