PTC protector for AT&T style 110 block

Details PTC protector for AT&T style 110 block PTC protector for AT&T style 110 block

1994-07-11

1996-07-30

DeBoer, Todd

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361 58, 361106, 361127, H02H 904

Patent

active

055418040

ABSTRACT:
A current-limiting protector package for use in conjunction with telephone terminal blocks comprises a two-piece interfitting housing which is made up of two housing halves soncially welded together. A pair of tip or ring terminals is disposed within each housing half along with a current-limiting device in the form of a positive-temperature-coefficient (PTC) device of the conductive polymer type. Lower end portions of the tip or ring terminals project outwardly from the housing so as to be capable of electrical engagement with opposed sets of terminals provided upon the telephone terminal block, while upper end portions of the tip or ring terminals project outwardly from the housing so as to be accessible to a line test probe whereby the lines or circuits of the telephone terminal block can be tested in connection with their operative status without necessitating removal of the protector package from the terminal block.

REFERENCES:
patent: 4687270 (1987-08-01), Plyler et al.
patent: 4692833 (1987-09-01), Chung
patent: 4796150 (1989-01-01), Dickey et al.
patent: 4846735 (1989-07-01), Teichler et al.
patent: 4849846 (1989-07-01), Hung et al.
patent: 4876621 (1989-10-01), Rust et al.
patent: 4922374 (1990-05-01), Mueller et al.
patent: 4968264 (1990-11-01), Ruehl et al.

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