Installation for the protection of a line

Details Installation for the protection of a line Installation for the protection of a line

1976-12-10

1978-10-24

Yusko, Donald J.

Communications: electrical

Condition responsive indicating system

Specific condition

340626, G08B 2100

Patent

active

041224361

ABSTRACT:
An installation for the protection of a line, according to which the line is surrounded at least within its area endangered by external influences by a coaxially arranged tubular member and the annular space disposed between the line and the tubular member is filled by a control medium which triggers a warning indication in case of an unusual pressure change caused, for example, by mechanical damage to the outer tubular member.

REFERENCES:
patent: 2151092 (1939-03-01), Dunsheath
patent: 2767392 (1956-10-01), Szwargulski
patent: 3086069 (1963-04-01), Kolmorgen
patent: 3184958 (1965-05-01), Eaton
patent: 3299417 (1967-01-01), Sibthorpe

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