Telephone receiver with electrostatic discharge prevention
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United States of America Patent
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-
Aug 8, 1995
Issued Date -
N/A
app pub date -
Feb 18, 1994
filing date -
Feb 8, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A receiver including a vibrator plate vibrating together with a voice coil in response to electrification of said voice coil which comprises an electrostatic discharge prevention plate having a central opening arranged above the vibrator plate with a small air gap provided therebetween. A metal cover around the top and sides of the receiver is imbedded in plastic for inhibiting electrostatic discharge via the cover. As a result the discharge path length through the air is substantially increased, reducing the likelihood of electrostatic discharge from the ear of the user.
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