Clip-on protector

Details Clip-on protector Clip-on protector

1981-08-12

1983-04-12

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361124, 337 32, 337 34, H02H 906

Patent

active

043800360

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.

REFERENCES:
patent: 3255330 (1966-06-01), MacKenzie et al.
patent: 4051546 (1977-09-01), Scheithauer

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