Wireless earplug with improved sensitivity and form factor

Patent No. 9,774,946

Issued: September 26, 2017
Filed: October 26, 2016

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


An improved wireless communications earplug for use with a magnetic field transmitter. The wireless earplug has a receiver made of a coil of wire on a magnetic bobbin, mounted in close proximity or in contact with a magnetic case of a speaker. The magnetic case of the speaker serves to increase the magnetic flux through the receiver and improves the efficiency of the earplug. The speaker is acoustically coupled to an eartip, and the earplug may be molded into a custom earplug body.

Reference to Related Applications

This application is a continuation of co-pending application Ser. No. 14/186,477, filed Feb. 21, 2014, entitled "Wireless Earplug with Improved Sensitivity and Form Factor", published as publication number 2014/0301563, which was a continuation of co-pending application Ser. No. 12/832,363, filed Jul. 8, 2010, entitled "Wireless Earplug with Improved Sensitivity and Form Factor", published as publication number 2010/0296667, which claimed benefit of Provisional Application No. 61/224,531, filed Jul. 10, 2009, entitled "Wireless Earplug with Improved Sensitivity and Form Factor", and which was a continuation-in-part of copending U.S. application Ser. No. 11/837,129, entitled "Wireless Communications Headset System Employing a Loop Transmitter That Fits Around the Pinna", filed Aug. 10, 2007, and published on Feb. 12, 2009, as US2009/0041285, which claimed the benefit of Provisional Application No. 60/824,091, filed Aug. 31, 2006, entitled "Wireless Communications System Employing a Loop Transmitter That Fits Around The Pinna". The aforementioned applications are hereby incorporated herein by reference.


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