Static structures (e.g. – buildings) – Frangible section or means – Removable corner or internal section
Reexamination Certificate
1993-10-05
2001-01-30
Friedman, Carl D. (Department: 3635)
Static structures (e.g., buildings)
Frangible section or means
Removable corner or internal section
C052S536000, C052S542000, C052S543000
Reexamination Certificate
active
06178703
ABSTRACT:
BACKGROUND OF THE INVENTION
In the art of roofing with tiles constructed of natural materials, it has been known for many years to roof tiles with natural slates. Such slates, derived from quarries, are cut to size, drilled or punched with nail holes, and applied to roofs in a conventional manner. However, such natural slates, while providing for roofs for many years, often 50-100 years, generally require a basic supporting roof structure capable of withstanding great amounts of weight, such as on the order of 2,000 lbs. per square, with a square being a 10 feet by 10 feet area of a roof.
Synthetic products have been developed which simulate natural-appearing roofs, such as slate roofs, but such are either very heavy, or if weight is a consideration, rather thin, being constructed thinner than natural slate or other natural roofing tiles, in order to reduce the weight required.
Other synthetic roofing products have been developed, such as from molded concrete with appropriate lightweight fillers, sometimes with partial recesses for weight reduction purposes.
Such prior art synthetic products either have not simulated the desired thickness of natural materials, or have not lent themselves to being cut, thereby making it necessary to have accessories in the form of custom hip and ridge tiles, custom rake edge tiles, and various custom angled pieces, in order to complete a roof. In such instances, while a vast majority of tiles necessary to comprise a roof may be the basic roof tile, the very large number of accessory pieces that must be stocked in order to accommodate the various roofing situations that arise are often prohibitively expensive and cumbersome, adding to the cost of a synthetic, natural-appearing tile roof.
SUMMARY OF THE INVENTION
The present invention is directed to providing a one-piece roofing tile, preferably formed of a molded clay material, so as to simulate a natural appearing tile, with the tile having hollowed zones or recesses for weight reduction, and strengthening webs to provide support for the tile in the installed, on-roof condition.
It is a further object of this invention to accomplish the above object, wherein the webs are located in such a manner in the tile that various tile accessories may be cut from the tile, for left and right rakes, for hips and ridges, and for various other cuts, including angled cuts, while adequately strengthening the tile.
It is yet another object of this invention to provide a molded, preferably clay tile with interlocking lip-and-groove constructions at the sides of adjacent tiles, for resisting rain infiltration to a roof.
It is yet another object of this invention to accomplish the above objects, wherein roofs are constructed from such tiles.
It is yet another object of this invention to provide a roof of clay tile construction, wherein a tile of a generally singular configuration may be used to provide the basic tiles for the roof, as well as to provide, when cut, the necessary accessory tiles for the roof.
It is a further object of this invention to provide a roof constructed of tiles, that will have preferred low levels of weight per roofing square, while simulating natural roofing materials.
It is yet another object of this invention to provide a novel method of constructing a roof, from tiles of the type described in the objects set forth above.
Other objects and advantages of the present invention will be readily apparent upon a reading of the brief descriptions of the drawing figures, detailed descriptions of the preferred embodiments, and the appended claims.
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Noone Michael J.
Woellner William C.
Certain-Teed Corporation
Friedman Carl D.
Paul & Paul
Wilkens Kevin D.
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