Use of a sacrificial anode for corrosion protection of a portable device, e.g. a hearing aid
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United States of America Patent
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Jul 23, 2013
Grant Date -
Jul 28, 2011
app pub date -
Jan 20, 2011
filing date -
Jan 22, 2010
priority date (Note) -
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Abstract
A portable device includes a substrate, a number of electronic components, and a battery having an anode and a cathode for energizing at least some of the components. The application further relates to a method of protection a portable device against corrosion and to the use of a portable device. An object of the present application is to protect selected metallic parts of a bodyworn electronic device against corrosion in a flexible and controlled manner. The problem is solved in that the portable device includes a sacrificial anode in the form of a component adapted to be surface mounted on the substrate. This has the advantage that corrosion can be contained at a specific location. The device may e.g. be used for portable listening devices, e.g. hearing aids or headsets or earphones including a part adapted for being worn at or in an ear of a user.
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