Damage prevention system for cables, pipelines and the like

Details Damage prevention system for cables, pipelines and the like Damage prevention system for cables, pipelines and the like

2005-08-02

2005-08-02

Reichard, Dean A. (Department: 2831)

Electricity: conductors and insulators

Underground

C324S067000, C405S157000

Reexamination Certificate

active

06924428

ABSTRACT:
A transmission line protection system comprising at least one signal carrying line buried adjacent the transmission line to be protected, means transmitting a signal through said signal carrying line, and means responsive to damage or severance of said signal carrying line to indicate that said signal carrying line has been damaged or severed and the location of the damage or severance.

REFERENCES:
patent: 2131291 (1938-09-01), Maust
patent: 3581703 (1971-06-01), Hosack
patent: 3633533 (1972-01-01), Allen et al.
patent: 4623282 (1986-11-01), Allen
patent: 4652861 (1987-03-01), Domes
patent: 4654639 (1987-03-01), De Courville
patent: 4767237 (1988-08-01), Cosman et al.
patent: 5991013 (1999-11-01), Eslambolchi et al.

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