Vibrator damping
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United States of America Patent
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Jul 10, 2007
Grant Date -
Nov 25, 2004
app pub date -
Jun 6, 2002
filing date -
Jun 21, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A variable-reluctance type vibrator for generating vibrations in a bone anchored hearing aid. The vibrator includes a vibrator plate and a bobbin base with a vibrator gap therebetween. The vibrator gap between the vibrator plate and the bobbin base, or some other spacing in the vibrator where a relative movement between two surfaces is generated during the vibratory function, is at least partially filled with a fluid or gel for providing the main part of the damping of the resonance frequency of the vibrator.
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