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US 5,348,791 AGranted
Foldable waterproofing structure
AssigneeW. R. Grace & Co.
InventorsPeter J. Thompson, Timothy J. Martin
Life of this patent
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Abstract
A Structure comprising a membrane of a waterproofing pressure sensitive adhesive material with, contiguous thereto, a layer of relatively rigid covering material so arranged and divided into segments that the structure can be folded at the divisions between the segments.
Claims6
A foldable waterproofing structure, comprising:
- a continuous pressure-sensitive waterproofing adhesive membrane layer comprising bitumen and rubber;
- and
- a plurality of segments contiguous with said waterproofing membrane and spaced apart from each other so as to permit folding, in the manner of a concertina of the waterproofing structure between said segments, each of said segments comprising a material of such stiffness that it does not buckle or bend under its own weight and having a first wall contiguous with said waterproofing membrane, a second wall spaced apart from said first wall, and transverse ribs connecting said first wall to said second wall and forming a channel between said walls;
- and
- mesh, scrim, or film contiguous with or embedded within said continuous pressure-sensitive waterproofing adhesive membrane layer between said spaced-apart segments.
2 more elements
Dependencies are inferred from the claim text.