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US 6,205,740 B1Granted
Supporting element and method for manufacturing the same
AssigneeLindab AB (Publ)
InventorsBengt Ekerholm, Hans Larsson, Ingmar Svensson
Life of this patent
Estimating the term…
Abstract
An elongate supporting element has a cross section with a web (9) and two side flanges (10, 11) for the supporting of building panels or the like. The web (9) has an elongate, stress-equalising zone (4) which extends wholly or partly between the two outer ends (8a, 8b) of the supporting element and by means of which the supporting element (8) is reinforced.
Claims29
An elongate supporting element, comprising:
- a first flange portion;
- a second flange portion;
- and
- a web portion that shares a first common edge with said first flange portion and shares a second common edge with said second flange portion, said web portion being disposed in a different plane than said first flange portion and said second flange portion and including a plurality of rows of deformations that define a stress-equalizing zone, said rows of deformations each comprise a plurality of close cuts that are sufficiently small, of sufficient shape, and sufficiently closely spaced within a row to provide the stress-equalizing zone, and the stress-equalizing zone including a region of unmachined material without cuts.
1 more element
A method of manufacturing an elongate supporting element from a flat sheet-metal blank, comprising the steps of:
- forming a plurality of rows of deformations on said blank, said rows of deformations each comprise a plurality of close cuts that are sufficiently small, of sufficient shape, and sufficiently closely spaced within a row to provide a stress-equalizing zone;
- bending a first section of said blank along a first edge that is parallel to at least one of said rows of deformations;
- and
- bending a second section of said blank along a second edge that is parallel to at least one of said rows of deformations such that a third section of said blank is disposed between said first and second sections of said blank, said rows of deformations being on said third section of said blank, the stress-equalizing zone further including a region of unmachined material without cuts.
1 more element
An elongate supporting element, comprising:
- a first planar portion;
- a second planar portion;
- and
- a third planar portion that shares a first common edge with said first planar portion and a second, opposing common edge with said second planar portion, said third planar portion being in a different plane than said first planar portion and said second planar portion and including a plurality of rows of deformations, the rows of deformations each comprising a plurality of close cuts, the rows being parallel to both said first and second common edges, said third planar portion further including a region of unmachined material without cuts, the deformations being sufficiently small, of sufficient shape, and sufficiently closely spaced within a row to define thereby a stress-equalizing zone between and including said rows of deformations, said stress-equalizing zone including said region of unmachined material, wherein the stress-equalizing zone is symmetrically arranged relative to a center plane (M) that is perpendicular to the third planar portion and that bisects the third planar portion along a line that is parallel to the first and second common edges.
1 more element
Dependencies are inferred from the claim text.