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US 4,731,969 AGranted
Roof tiles
AssigneeRedland Roof Tiles Limited
InventorsRobin M. Baker, Paul R. Sargeant, Ernest G. Papper
Life of this patent
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AssigneeRedland Roof Tiles Limited
InventorsRobin M. Baker, Paul R. Sargeant, Ernest G. Papper
Estimating the term…
The invention concerns an extruded concrete roof tile of the kind which is designed to be laid in broken bond, is generally rectangular in plan view and has underlying and overlying side lock portions at opposed edges respectively. The upper surface of the tile at the upper end thereof, when on the roof, is recessed to receive the side locks of two similar upper tiles laid in broken bond, and the underlying side lock portion is cut away at the lower end of the tile so that the lower end portion of the tile may lie over the upper surface of the tiles down the roof (in use) to extend beyond the said recessed portions of the lower tiles. The recessed portion is arranged to receive the tile hanging nibs of an identical tile when the two tiles are stacked one upon the other.
An extruded concrete roof tile of a kind which is designed to be laid in broken bond, is generally rectangular in plan view and has underlying and overlying sidelock portions at opposed edges respectively, wherein an upper surface of the tile is generally flat, said tile having an upper end provided with an upwardly facing recessed portion adapted to received the sidelocks of two similar upper tiles laid in broken bond, said recessed portion being recessed beneath the flat upper surface of the tile, and the underlying sidelock portion is cut away at a lower end of the tile so as not to extend beyond the recessed portion of a tile positioned therebeneath when laid on a roof, said generally flat upper surface of the tile having a lower end portion which extends downwardly from the recessed portion and is positioned to lie over upper surfaces of a lower tile down the roof and positioned to extend beyond the said recessed portion of the lower tile.
A roof, said roof including an upper tile and a lower tile,
Dependencies are inferred from the claim text.