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| Expansion joint and fabric therefor |
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| Method for moisture-proofing refractory fiber for use in fire-resistant enclosures |
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| Silicone/elastomer fiberglass sleeves |
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Roofing tiles
| Details |
Inventors: Gregg, Arthur H.;
Assignee:
Primary Examiner: Ridgill, Jr.; James L.
Assistant Examiner:
Attorney, Agent or Firm: Sim & McBurney
A roofing tile of malleable sheet material includes flat rectangular panels and V-shaped inverted ridges along each side edge of each panel. An outwardly and downwardly sloping first marginal panel is contiguous with one end edge, and an outwardly and upwardly sloping second marginal panel is contiguous with the other end edge. A third marginal panel extends from the outer margin of the second marginal panel, parallel with the flat rectangular panel. Each raised ridge is downwardly inverted at one end to define two quasi-parallelogram panels meeting at a join line which is an inverted part of the apex of the ridge. Each raised ridge is also upwardly inverted at its other end, to provide two further quasi-parallelogram panels meeting at a further join line which is an inverted part of the apex of the ridge. At the downwardly inverted end of the ridge, two triangular panels are contiguous with each pair of quasi-parallelogram panels, and are in planes spaced downwardly from and parallel to the flanks of the ridge. The first-mentioned quasi-parallelogram panels and the triangular panels define a watershed socket which nests with another watershed socket defined between the further quasi-parallelogram panels and the upper end of the ridge, to provide a sheltered location where a simple nail can be driven through to secure two tiles at once. |
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DETAILED DESCRIPTION OF THE DRAWINGS As can be seen in FIG.
1, a roofing tile 10 is made from a sheet of malleable material such as aluminum or galvanized iron, formed so as to define a plurality of flat rectangular panels 12, each having two side edges 14 and 15, and two end edges 16 and 17.
The tile includes a plurality of raised ridges 20 between adjacent pairs of panels 12, whereby there is a raised ridge 20 along each side edge of each panel 12.
Each raised ridge 20 is substantially an inverted "V" in section taken perpendicular to its respective side edge or edges.
Thus, each ridge 20 defines two flanks 22 and 24.
Along the nearer end edge 17 of each rectangular panel 12 is an outwardly and downwardly sloping first marginal panel 27 which is contiguous with the nearer edge 17 of its respective rectangular panel 12.
Each first marginal panel 27 thus defines an obtuse angle with its respective rectangular panel 12.
The tile further includes, for each rectangular panel 12, an outwardly and upwardly sloping second marginal panel 30 which is contiguous with the other end edge 16 of each rectangular panel, each second marginal panel 30 having an outer edge 32.
Finally, for each rectangular panel 12 there is a third marginal panel 34 which is substantially parallel with its respective rectangular panel 12, and is contiguous with the outer edge 32 of the second marginal panel 30.
It will be appreciated that all of the panels 12, 27, 30 and 32 are integral with each other at suitable fold lines.
Each raised ridge 20 is downwardly inverted, at its end adjacent the first marginal panel 27, along a V-shaped fold line 37 which lies in a plane oblique to the rectangular panel 12, with the apex of the fold line 37 being directed generally toward the edge 16 of the rectangular panel 12.
The inverted ridge flanks 22 and 24 provide, respectively, two quasi-parallelogram panels 42 and 44 which lie in steeply inclined planes, and which meet at a join line 45 which is simply an inverted part of the apex 46 of the respective ridge
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