Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 30, 2008
Patent Application Number
11567915
Date Filed
December 7, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
A hearing aid includes a sound input device, and a speaker, wherein the speaker includes a compartment with magnet suspended in a fluid containing magnetic particles and wherein a coil wrapped around the compartment or in close proximity thereto excites the magnet to vibrate causing pressure waves to vibrate a diaphragm proximal to the magnet.
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