Back to results
US 4,303,747 AGranted
Expanded-metal grid
AssigneeFirma Emil Bender
InventorUlrich Bender
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeFirma Emil Bender
InventorUlrich Bender
Estimating the term…
A rectangular grid for supporting the active mass of a plate for an electric battery is formed by slitting a metal sheet to produce mutually staggered tiers of cuts, adjacent tiers being separated by distances substantially less than the sheet thickness. Upon a subsequent stretching of the slitted sheet to expand the cuts into generally rhomboidal meshes, the webs bounding these cells are twisted whereby the nodes connecting them, which are formed by the unslitted parts of the several tiers, are tilted onto their sides; with proper dimensioning, the flanks of the tilted nodes are substantially coplanar with the faces of two border strips which extend along the major sides of the rectangle and are formed integral with the grid from unslitted sheet portions. One of these border strips is integral with a terminal tab of reduced thickness extending over slightly less than half the length of that strip.
A support for the active material of a battery plate, comprising a unitary metallic grid of generally rectangular outline with a multiplicity of generally rhomboidal meshes bounded by webs of substantially rectangular cross-section and a pair of solid border strips integral with said webs on opposite sides of said grid, the minor dimension of said cross-section being substantially equal to half the thickness of said strips, the major dimension of said cross-section being substantially equal to the thickness of said strips and including an angle of less than 45.degree. with the faces of said strips, the webs of adjacent meshes being interconnected by nodes whose height perpendicular to said faces equals substantially twice the minor dimension of said cross-section.
A support for the active material of a battery plate, comprising a unitary metallic grid of generally rectangular outline with a multiplicity of generally rhomboidal meshes bounded by webs of substantially rectangular cross-section, a pair of solid border strips integral with said webs on opposite sides of said grid, and a terminal tab integrally adjoining one of said strips, said tab having a thickness substantially less than that of said strips.
A support for the active material of a battery plate, comprising:
Dependencies are inferred from the claim text.