Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 21, 2014
Patent Application Number
12497894
Date Filed
July 6, 2009
Patent Citations Received
Patent Primary Examiner
Patent abstract
Earpieces and expandable insertion devices are provided. An earpiece includes an ambient sound microphone (ASM); an ear canal microphone (ECM); an ear canal receiver (ECR); and an inflatable sealing section. The sealing section includes at least one pressure valve. The at least one pressure valve opens when the pressure in the sealing section is greater than an ambient pressure.
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