Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Steen Brabrand Rasmussen0
Date of Patent
September 11, 2007
0Patent Application Number
105012240
Date Filed
January 9, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A measuring device for measuring in an ear canal includes a probe for insertion into an ear canal having an opening for letting air in to and out of the ear canal, and a pump for providing a pressure above a surrounding atmospheric pressure or below the surrounding atmospheric pressure, the pump including a housing with openings for inlet and/or outlet, where within the housing a piston element having piezo electric properties is disposed, one opening in the pump being operatively connected to the opening in the probe.
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