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US 6,205,734 B1Granted
Shingle
AssigneeCertainTeed Corporation
InventorsHusnu M. Kalkanoglu, Joseph Quaranta, Kermit E. Stahl
Life of this patent
Estimating the term…
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AssigneeCertainTeed Corporation
InventorsHusnu M. Kalkanoglu, Joseph Quaranta, Kermit E. Stahl
Estimating the term…
A multi-layer shingle is made by cutting an anterior layer of shingle material to have a headlap area and a tab area, and with a plurality of tabs being present in the tab area, separated by slotted openings. The tab area of the anterior layer has a predetermined design that has a repeatability in the longitudinal direction, or from one edge of a shingle to another in the right-to-left direction, which repeatability is a function of the length of the shingle between said left and right edges, as well as being a function of the number of tabs in the shingle's anterior layer, with the repeatability being smaller or greater than the length of the shingle in the longitudinal direction. Thereby, an ornamental appearance is provided that has a random, natural-looking effect when the shingles are laid up on a roof.
A shingle layer having an upper headlap area and a lower tab area terminating in tab lower edges, with the tab area comprising a plurality of tabs separated by longitudinally spaced apart slotted openings, and wherein there is a predetermined design to said slotted openings, with at least some of said openings being irregularly configured with non-uniform dimensions across the openings and non-symmetrically randomly configured on opposite sides of a given said opening and of non-uniform dimension from one opening to at least another opening.
Dependencies are inferred from the claim text.