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US 4,514,947 AGranted
Roof tile and tile composition of matter
AssigneeEmbelton-Grail, Inc.
InventorDonald J. Grail
Life of this patent
Estimating the term…
Abstract
A roof tile made of a composition of matter comprising cement, silica sand, iron oxide pigment, acrylic polymer resin, an antifoaming agent and water, and formed into a shape having a top surface, a bottom surface, a top end, a butt end, and with a longitudinal side edge having a longitudinal flange, and another longitudinal side edge having a longitudinal concavity, with a plurality of ribs formed in the bottom surface, and reinforcing wire embedded in said ribs and the bottom perimeter of the tile.
Claims5
A roof tile comprising:
- a top surface, a bottom surface, a top end, a butt end, said top and bottom surfaces being tapered towards each other from said butt end to said top end, said roof tile being provided with one longitudinal side edge having a longitudinal flange, and another longitudinal edge having a longitudinal concavity;
- a plurality of spaced longitudinal ribs each of equal width and depth formed in said bottom surface and extending continously from said butt end to said top end;
- longitudinal reinforcing wire embedded in each of said ribs;
- longitudinal reinforcing wire embedded in the bottom perimeter of said roof tile and in the same plane as said wire embedded in said ribs;
- and
- means for securing said tile to a roof.
3 more elements
Dependencies are inferred from the claim text.