Protector with circuit disabler

Details Protector with circuit disabler Protector with circuit disabler

1985-06-21

1987-02-03

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361124, 337 32, 337 34, H02H 322

Patent

active

046412182

ABSTRACT:
In response to spurious signals in a circuit connecting telecommunications equipment with a serving central office, the signals will pass through terminals of a protector module and through a protector unit inserted in the circuit causing a lead pellet to melt or the air gap between carbon blocks to short and establish a path to ground so that the spurious signals may be grounded. When the protector unit is removed from the protector module, the circuit remains grounded until the protector unit is replaced. Alternatively, when the protector unit is removed, the electrical path of the circuit is opened by introducing an insulator in the path of signals between the terminals. In one embodiment, in the open circuit condition, unusually high voltages arc over from the protector terminals to a metallic pin and then to ground.

REFERENCES:
patent: 1551700 (1925-09-01), Sands
patent: 1736028 (1929-12-01), Winklehaus
patent: 3535779 (1970-10-01), Wanaselja
patent: 3587021 (1971-06-01), Baumbach
patent: 3947730 (1976-03-01), DeLuca et al.
patent: 4071876 (1978-01-01), Benson et al.
patent: 4288832 (1981-09-01), Saligny
patent: 4325100 (1982-04-01), Baumbach
patent: 4420792 (1983-12-01), Hegner et al.
patent: 4502087 (1985-02-01), Huret
patent: 4504883 (1985-03-01), Uchida et al.

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