Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1986-09-23
1988-03-22
Pellinen, A. D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361120, 361124, 337 32, H02H 906
Patent
active
047333251
ABSTRACT:
A protector module (30) for protecting tip and ring conductors of a telepe loop includes a pair of protector assemblies (40--40') which are supported within a common housing (32). A voltage protection subassembly (42) of each protector assembly is connected electrically to a grounding subassembly (44) for causing current associated with excessive voltage surges to be conducted to ground. Each protector assembly also includes a current protection subassembly (41) which comprises a dielectric base, as well as a tubular line pin (61) and a central office pin (57) which are connected together electrically. A shunting element (62) is disposed concentrially about and is supported at one end of the line pin in an initial position by a pellet (70) of a fusible material which extends between a closed end of the shunting element and an edge surface (68) of an open end of the line pin. A spring (43) between a cup (93) of the voltage protection subassembly and the housing maintains the voltage protection subassembly in engagement with the shunting element and the pellet of fusible material in engagement with the line pin. When current flow exceeds a predetermined level that is sufficient to melt the pellet of fusible material or during a prolonged voltage surge, the spring is effective to cause the shunting element to be moved to a position where a flange (67) thereof engages a plate (86) of the grounding subassembly to establish a fault current path to ground.
REFERENCES:
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patent: 4013927 (1977-03-01), Gilberts
patent: 4091435 (1978-05-01), Ahuja
patent: 4320435 (1982-03-01), Jones
patent: 4366412 (1982-12-01), Lange et al.
patent: 4405967 (1983-09-01), Cwirzen
patent: 4434449 (1984-02-01), Dickey
patent: 4458288 (1984-07-01), Chapman, Jr. et al.
patent: 4502087 (1985-02-01), Huvet
American Telephone and Telegraph Company AT&T Technologies, Inc.
Deboer Todd E.
Pellinen A. D.
Somers Edward
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