The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 2010
Filed:
May. 26, 2007
Christopher Todd Welsh, Fishers, IN (US);
Alan D. Michel, Fishers, IN (US);
Michael Thomas Frank, Fishers, IN (US);
John Charles Baumhauer, Jr., Indianapolis, IN (US);
Larry Allen Marcus, Fishers, IN (US);
Christopher Todd Welsh, Fishers, IN (US);
Alan D. Michel, Fishers, IN (US);
Michael Thomas Frank, Fishers, IN (US);
John Charles Baumhauer, Jr., Indianapolis, IN (US);
Larry Allen Marcus, Fishers, IN (US);
MWM Acoustics, LLC, Indianapolis, IN (US);
Abstract
A telephone handset that includes both a speaker and a secondary flux coil is provided. The secondary flux coil provides improved inductive coupling between the handset and a hearing aid. Due to the wiring configuration of the handset, the speaker and the secondary flux coil can be independently filtered, thus providing means for independently optimizing the performance of both the speaker and the secondary flux coil. Suitable filters include both passive circuits and digital signal processors.