Line surge protection device for telephone system

Details Line surge protection device for telephone system Line surge protection device for telephone system

1977-10-17

1979-04-10

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

179 96, 337 34, 339198GA, 361124, H02H 104

Patent

active

041492110

ABSTRACT:
A unitary line surge protector for removable connection to an individual, existing type-444 connecting block and jack assembly of a main distribution frame of a telephone exchange system at a telephone office or substation. Each connecting block and jack assembly includes a pair of normally closed jacks interposed between connecting lugs and a guide extension running generally parallel to the jacks. The line surge protector includes generally flat housing of electrically insulative material containing a pair of line surge protection devices. The housing has apertures that receive the jacks of the assembly, and interior contacts open the jacks and connect them through the protection devices. The dimensions of the housing are such that the protectors can be mounted adjacent one another both vertically and horizontally on a type-444 frame. An electrically conductive guide engaging member disposed in said one aperture electrically contacts the guide extension for guiding the protector onto the jacks and for providing a ground for the assembly.

REFERENCES:
patent: 1551700 (1925-09-01), Sands
patent: 2104434 (1938-01-01), McCormick et al.
patent: 3255330 (1966-06-01), MacKenzie et al.
patent: 3411040 (1968-11-01), Dietz
patent: 3535463 (1970-10-01), Trucco
patent: 3760328 (1973-09-01), Georgopulos

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