Method of using a composite joint infill system
AssigneeFoam Enterprises, Inc.
InventorsJames H. McBrien, Richard L. Wyke, David C. Dressel
Life of this patent
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Abstract
A pair of concrete coated pipe joints welded together end to end with a gap between the concrete coatings, the gap being filled with a fast setting elastomeric polymeric infill material, either solid or foamed, and a particulate filler material, and a method for molding the infill material with the mold being filled with filler material before the polymer components are injected, and with a membrane lining the mold to prevent the polymer from adhering to the mold.
Claims7
A method for forming a joint infill at the juncture of sequential lengths of concrete coated pipe welded together end to end with a gap between the concrete coatings which comprises
- enclosing the gap with a mold having a top opening,
- filling the mold with a particulate filler material,
- then injecting into the mold a mixture of unreacted liquid components of a rapid setting elastomeric polymer,
- allowing the components of the polymer to react until the polymer sets up, and
- removing the mold.
Dependencies are inferred from the claim text.