초록 ▼

An extruded roof tile (30) has an upper surface (11), which is contoured to give the appearance of a profiled tile and which is, for example, provided by projections (32, 34) extending between the upper and lower edges (13) and (14a) respectively of the tile, and an under surface (12) having a shape

An extruded roof tile (30) has an upper surface (11), which is contoured to give the appearance of a profiled tile and which is, for example, provided by projections (32, 34) extending between the upper and lower edges (13) and (14a) respectively of the tile, and an under surface (12) having a shape which is other than a contoured shape which generally follows that of the upper surface (11) of the tile (30). For example, the under surface (12) may have a shape which corresponds to that of a flat tile. In one method of making the tile (30), a material from which the tiles (30) are made is extruded onto a path which shapes the under surface (12) of tiles (30), the material is compressed to provide the upper surface (11) of tiles (30) with a contoured shape, for example provided by the projections (32) and (34), the under surface (12) of tiles (30) is provided with a shape which is other than a contoured shape which generally follows that of the upper surface (11) of tiles (30) and the contoured appearance of the upper surface (11) of tiles (30) is changed without changing the shape of the under surface (12) of tiles (30).

대표청구항 ▼

[ I claim:] [1.] In a roof tile comprising an upper edge, a lower edge and opposed side edges when in an orientation installed on a roof, the tile further comprising an under surface and a contoured upper surface which has a shape to give the appearance of a profiled tile, including a contoured port

[ I claim:] [1.] In a roof tile comprising an upper edge, a lower edge and opposed side edges when in an orientation installed on a roof, the tile further comprising an under surface and a contoured upper surface which has a shape to give the appearance of a profiled tile, including a contoured portion and a portion which is not contoured, thereby to provide an undulating or otherwise non-planar roof surface,the improvement wherein the upper surface comprises an extrusion face, the tile has an overlap region extending from the upper edge toward the lower edge for a distance suitable to allow the upper edge of the tile to be overlapped by the lower edge of an upwardly adjacent roof tile, the contoured portion comprises at least one formation in the form of a projection which extends outwardly from the upper surface of the tile, the projection extending for a distance from the lower edge toward the upper edge for a distance as far as, but not into, the overlap region, and the under surface has a shape which generally corresponds to the shape of the portion of the upper surface of the tile that is not contoured.