Western Electric Company, Inc.

American Telephone and Telegraph Company, At&t Technologies, Inc.

Raymond A Levandoski

Allen Kyle Long

James A Hudson, Jr

Charles McGonigal

Robert L Sweatt

E Walton Horne, Iii

Floyd J Garner

John M Amein

A protector module (30) for protecting the conductors of a telephone loop cludes a pair of protector assemblies (40-40') which are supported within a common housing (32). A gas tube 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. A first electrode includes a portion which extends through annular dielectric and metallic members and an opening of an open-ended metallic container (93) to engage a shunting element (62) of a current protection subassembly (41). The superimposed annular members are held in engagement with the first electrode at a substantially constant pressure by axial forces applied by turned-in portions (109--109) of a side wall of the metallic container. The shunting element is supported at one end of the line pin in an initial position by a fusible material. A spring (43) between the container of the voltage protection subassembly and the housing maintains the voltage protection subassembly in engagement with the shunting element. When current flow exceeds a predetermined level that is sufficient to melt the fusible material, the spring is effective to cause the shunting element to be moved to engage the grounding subassembly to establish a fault current path to ground. The excess voltage arcs across the wide gap to ground, or in the event that a gas in the gap has vented, the voltage arcs across openings in the dielectric member to ground in a fail-safe mode.

Voltage surge limiter with grounding assembly

The invention relates to the monitoring of the filling effectiveness during the filling operation of a waterproof or filled telecommunications cable on a manufacturing line, and includes measuring the capacitance change per unit length of an outer pair of insulated conductors in the cable, measuring the capacitance change per unit length of an inner pair of insulated conductors in the cable, determining any deviations in the measured capacitance changes and utilizing such deviations by feedback control to eliminate further deviation, as well as determining the point of deviation along the cable length.

Method and apparatus for controlling the filling of a cable

Method and apparatus for measuring the filling effectiveness of a cable

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Doraville, GA, United States of America

Raymond A Levandoski