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US 4,244,156 AGranted
Pole and piling protector
OwnerRidley Watts, Jr.inventor
Life of this patent
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OwnerRidley Watts, Jr.inventor
Estimating the term…
A tubular plastic shell, with an overlapped longitudinal seam and longitudinally extending interior pockets that form exterior ribs, encircles a wooden pole or piling in an area to be protected. A foamed adhesive between the shell and pole fills and seals the surface of the pole beneath the shell, adheres the shell, and provides a supporting cushion for the shell that inhibits cracking or puncturing from impact. Longitudinally spaced ends of the shell beyond the pockets tightly encircle the pole to prevent escape of the adhesive as it forms during application. Ribs at the overlapped seam nest into pockets to retain the shell tightly about the pole during expansion of the adhesive. Where impact or abrasion are not anticipated, the shell can be used as a carrier and mold for forming an adherent foamed sealant layer or covering about a pole and then be removed.
A method of protecting a portion of a pole or piling intermediate its ends, comprising the steps of providing a still but not rigid protective shell capable of being formed into a tubular configuration and having pockets in one surface of the shell and corresponding extending projections in the opposite surface, establishing a length of the shell greater by at least the width of one of said pockets than the perimeter of the pole or piling at the location to be protected, coating said one surface with a foamable adherent material in sufficient quantity to fill the pockets and cover said surface when the foamable material expands, applying the shell about the pole or piling before the foamable material has substantially expanded and overlapping the ends so that at least one projection is nested within a pocket at the overlapped ends, and maintaining the shell about the pole or piling while the material expands, hardens, and adheres to the pole or piling.
Dependencies are inferred from the claim text.