Clip-on protector
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United States of America Patent
Stats
-
Apr 12, 1983
Issued Date -
N/A
app pub date -
Aug 12, 1981
filing date -
Sep 12, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A clip-on device to protect telephones and communication apparatus, wherein clips for releasably holding a 3-terminal gas protector are external extensions of electrically insulated spaced terminals within the housing. A heat coil in series with each communication line and a carbon block air gap protector across each half of the gas protector for redundancy, are within the housing. The heat coil protects against a sustained overcurrent condition on the line while the gas and air gap protectors ground over-voltages of short duration. Utilizing heat conduction means, heat generated from sustained over-voltage melts a fusible disc allowing spring biased parts within the housing to move and short line terminals to ground.
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