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Composite structural panel

  • US 5,946,878 A
  • Filed: 04/08/1998
  • Issued: 09/07/1999
  • Est. Priority Date: 05/27/1997
  • Status: Expired due to Fees
First Claim
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1. A structural panel comprising a thin substantially rectangular member of preselected length, width and thickness supporting a substantially flat upper surface and a peripheral flanged edge, said member supported on the lower surface thereof by a first plurality of substantially evenly spaced transverse ribs subtending the width of said member and a second plurality of substantially evenly spaced longitudinal ribs subtending the length of said member, said second plurality being greater than said first plurality, and at least one pair of intersecting diagonal ribs extending from respective diagonal corners of said member, said member and ribs comprising a molded unitary structure of a composite material composed of plastic, comminuted cellulosic matter or glass fibers, and a flame retardant.

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