Protective shield for elongated underground utilities

Pipes and tubular conduits – Combined – With hose protector

Patent

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Details

138128, 138105, 138110, 405157, 405154, F16L 5510

Patent

active

059882271

ABSTRACT:
A protective shield for elongated underground utilities such as an elongated underground utility strand or pipe is disclosed. The protective shield includes a foldable elongated flexible sheet of shock absorbing material adapted to both overlie and underlie the elongated underground utilities. The foldable elongated flexible sheet of shock absorbing material includes at least one longitudinally extending fold line that extends in the same direction as the elongated underground utilities and may be transversely offset from a longitudinal midpoint of the foldable elongated flexible sheet of shock absorbing material. In some instances, the foldable elongated flexible sheet of shock absorbing material may include two longitudinally extending fold lines that are transversely offset on each side of a longitudinal midpoint area of the foldable elongated flexible sheet of shock absorbing material. The foldable elongated flexible sheet includes an upper overlying panel and a lower underlying panel such that end marginal areas of the upper overlying panel and lower underlying panel are juxtaposed one another when protecting the elongated underground utilities. The foldable elongated flexible sheet preferably comprises a flexible porous filamentary mat to enable moisture to be dissipated from around elongated underground utilities while also permitting cathodic testing therethrough.

REFERENCES:
patent: 2650619 (1953-09-01), Phlaumer
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patent: 3251382 (1966-05-01), Tatsch
patent: 3336951 (1967-08-01), Huelster
patent: 3473339 (1969-10-01), Schafly, Jr.
patent: 3504503 (1970-04-01), Allen et al.
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patent: 4576206 (1986-03-01), Lauren
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patent: 5036210 (1991-07-01), Goodman
patent: 5099889 (1992-03-01), Ratzlaff
patent: 5200704 (1993-04-01), Clark, Jr. et al.
patent: 5310594 (1994-05-01), Holland et al.
patent: 5527070 (1996-06-01), Blackwell

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