Knock-down sawhorse

Claim 1

A sawhorse comprising a horizontal, hollow cross beam open at the underside thereof having a plurality of spaced laterally-extending partitions which define a plurality of rectangular-shaped vertical recesses; and at least two pairs of hollow legs, each leg having a wedge-shaped upper portion with a flat vertical side and a flat, non-parallel, angled side, the width of said vertical side and said angled side being essentially the same as the spacing between said partitions, said vertical sides being hollow and provided with a vertical integrally-formed reinforcing strut forming a bearing surface thereon, each leg also having a lower portion extending at an obtuse angle from said upper portion, said lower portion also being hollow from its inner side and provided with a plurality of integrally-formed diagonal reinforcing struts, each pair of legs being removably secured to said beam by juxtaposing said vertical sides of said pair of legs and inserting said upper ends of said pair of legs together into one of said recesses, the maximum thickness of said juxtaposed pair of upper ends being slightly greater than the corresponding interior width of the recess, whereby said upper portions form a wedging engagement with said recess; said cross beam and said legs formed of structural foam polypropylene having a specific gravity of between 0.68 and 0.72, a compressive strength of between 1,400 and 1,600 psi, a tensile strength of between 1,800 and 2,000 psi, and a flexural modulus of 95,000 to 105,000 psi.