Telephone receiver with electrostatic discharge prevention

Details Telephone receiver with electrostatic discharge prevention Telephone receiver with electrostatic discharge prevention

1994-02-18

1995-08-08

Kuntz, Curtis

Telephonic communications

Terminal

Housing or housing component

379433, 379451, 381 79, 381188, 381194, H04M 100

Patent

active

054406307

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.

REFERENCES:
patent: 4821320 (1989-04-01), Andert et al.
patent: 4845760 (1989-07-01), Awakowicz et al.
patent: 4868876 (1989-09-01), Schiller et al.
patent: 4944017 (1990-07-01), Cograsse et al.
patent: 5067151 (1991-11-01), Inagaki et al.
patent: 5155773 (1992-10-01), Hansen

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