Patent ID: 6694697
Filing Date: 2004-02-24
Classification: E04C,Y10T

Abstract:
A grating comprisinga plurality of first bars and a plurality of second bars and a plurality of intersections of said first and second bars; said first and second bars each including edges, one said edge of each said first bar including first slots, and one said edge of each said second bar including second slots; each said first bar including preformed deformable arms adjacent said first slots in said first bar; each said second bar including recesses adjacent said second slots in said second bar; each intersection including aligned and interfitted first and second slots of said first and second bars, said first slot of said first bar receiving said second bar, the second slot of said second bar receiving said first bar, and one of said deformable arms being deformably crimped to extend in locking engagement into one of said recesses.