Patent ID: 6415581
Filing Date: 2002-07-09
Classification: E04B,E04C,E04D,Y10S,Y10T

Abstract:
A stiffening member, comprising:a. a plurality of U-shaped portions, having an outer surface, wherein each said U-shaped portion comprises: (i) a first substantially vertical, planar side portion; (ii) a second substantially vertical, planar side portion; (iii) a horizontal, planar floor portion; (iv) a first corner integrally connecting said floor portion to said first substantially vertical, planar side portion; (v) a second corner integrally connecting said floor portion to said second substantially vertical, planar side portion; (vi) means for reinforcing one of said corners between one of said side portions and said floor portion, wherein said reinforcing means comprises a projecting portion projecting from said U-shaped portion's outer surface, and further, wherein said projecting portion comprises an elongate ribs generally hemicircular in transverse cross-section, projecting convexly from said U-shaped portion's outer surface; b. a plurality of horizontal, planar upper portions residing in a plane parallel to and above the plane of said horizontal, planar floor portions; c. an integral connection between each of said first substantially vertical, planar side portions and one of said horizontal, planar upper portions; and, d. an integral connection between each of said second substantially vertical, planar side portions and another of said horizontal, planar upper portions.