Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – With protection or indication of pipe or trench
Patent
1990-05-15
1991-01-29
Corbin, David H.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
With protection or indication of pipe or trench
116209, 428907, F16L 5700
Patent
active
049882368
ABSTRACT:
A polymeric tape intended for use underground near service lines with a biocide incorporated into the polymer. The biocide's presence in the tape after burial discourages vegetative, fungal or other biological growth near the tape. Specifically tree root growth destructive to pipes is prevented. The biocide is incorporated into the plastic tape or the plastic coating on the metallic layer of a detectable tape. The biocide is incorporated in an effective amount to have biocidal activity on the surface of the tape or in increased amounts which leach form the tape.
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Cameron William D.
Ramsey Boyd J.
Corbin David H.
Reef Industries, Inc.
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