Patent ID: 7992360

Claim:
A method of placing a tactile warning device for the sight impaired onto a substrate matrix, comprising: providing a tactile warning panel having an upper surface and a lower surface with the upper surface having a plurality of spaced-apart tactile warning protrusions extending upwardly therefrom and a plurality of fastener apertures formed therein between the protrusions with the upper surface of the panel being continuous and devoid of any other openings except for the fastener apertures; placing the panel on the substrate matrix; providing a plurality of loose fasteners with each of the loose fasteners having a head portion and a body portion extending downwardly therefrom, each of the head portions of the fasteners having a diameter greater than the diameters of the fastener apertures and with each of the head portions having the same height and diameter and configuration as the tactile warning protrusions; extending the body portions of the loose fasteners downwardly through the fastener apertures into the substrate matrix to anchor the panel to the substrate matrix and so that the head portions of the fasteners also function as tactile warning protrusions for the sight impaired.