Roof covering

Static structures (e.g. – buildings) – Lapped multiplanar surfacing; e.g. – shingle type – Interfitted sections

Patent

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Details

52545, E04D 134

Patent

active

041787315

ABSTRACT:
Roof covering comprising a number of surface covering sheet metal strips and a number of fastening elements to be fastened to a foundation structure and to grip over the respective sheet metal strips and thereby hold them in place against the foundation structure. The surface covering sheet metal strips are highly profiled into a wave shape extending in the longitudinal direction of the strips with a wave length, which is of the same order as the width of each strip which has raised portions and countersunk portions as seen from the intended upper side of the strip and bent edge portions extending along the longitudinal edges of the strip. One bent edge portion has a portion extending in outwards direction from said upper side and preferably a subsequently following portion, which is parallel to the principal surface of the strip. The other edge portion has a portion extending in direction away from the principal surface and preferably is followed by a portion parallel to the principal surface. Said edge portions are arranged to overlap each other, when a number of strips are laid close to each other in order to form coverings. Said fastening elements are arranged with a U-shaped portion to grip over the underlying edge portion of the edge portions overlapping each other and with an outer portion to grip over the outermost portion of the edge portion of the overlying edge. The fastening elements are arranged to cooperate with the edge portions of the strips at the counter sunk portions of the strips.

REFERENCES:
patent: 297862 (1884-04-01), Smith
patent: 1539632 (1925-05-01), Belding
patent: 2128495 (1938-08-01), Murphy
patent: 3320711 (1967-05-01), Johnson
patent: 4040211 (1977-08-01), Wotherspoon

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