Sensing coil in hearing aid
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United States of America Patent
Stats
-
Oct 12, 1982
Grant Date -
N/A
app pub date -
Dec 1, 1980
filing date -
Dec 11, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sensing coil unit for a hearing aid is made up of a sensing coil which is in the form of a cylinder one end of which is heavier than the other end and is floated in the liquid in a sealed container, so that the sensing coil is vertical at all times irrespective of the positions of the hearing aid thereby to maintain constant its magnetic coupling condition with the inductance coil which is laid to transmit voice signals to the sensing coil.
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