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Automated weldless inter-locking grating assembly for bridge decks and like structures

  • US 6,018,833 A
  • Filed: 09/14/1998
  • Issued: 02/01/2000
  • Est. Priority Date: 09/16/1997
  • Status: Expired due to Fees
First Claim
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1. An automated weldless, inter-locking grating assembly for bridge decks, comprising:

  • a multiplicity of laterally extending primary load-bearing structural components, said primary load-bearing structural components having a web section extending vertically and located within said web section spaced triangular apertures, above said spaced triangular apertures an upper section of primary load-bearing structural components, said spaced triangular apertures function in cooperation with directly opposing spaced triangular apertures located within adjacent primary load-bearing structural components;

    a multiplicity of secondary load-bearing structural components transversely located in relation to said primary load-bearing structural components, having a notched upper edge and a notched lower edge whereby said secondary load-bearing structural components may be positioned through said spaced triangular apertures of said web section by sliding said secondary load-bearing structural components side wise through said spaced triangular apertures enabling engagement of said secondary load-bearing structural components into said primary load-bearing structural components to create an interlocked static position of said grating assembly;

    wherein said notches are spaced to engage said web section when said secondary load-bearing structural components are rotated from said side wise position to a vertical position by horizontal motion of said primary load-bearing structural components, locking said primary load-bearing structural components into said secondary load-bearing structural components into an inter-locked static position, wherein said notches intersect with said web section of said primary load-bearing structural components;

    a multiplicity of trimorphic load-bearing structural components alternately positioned between said primary load-bearing structural components for said locking into said secondary load-bearing structural components when said secondary load-bearing structural components are rotated from said side wise position to said vertical position;

    a rod slidably inserted through rod openings of said web of said primary load-bearing structural components and said trimorphic load-bearing structural components causing said grating assembly to achieve maximum rigidity and preventing lateral movement of said multiplicity of primary load-bearing structural components and said trimorphic load-bearing structural components of said grating assembly.

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