Patent ID: 7758279

Claim:
A method of placing a tactile warning device 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 apertures formed therein between the protrusions; covering the panel with a protective plastic sheeting; placing the panel on the substrate matrix; providing a plurality of fasteners with each of the protrusions 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 apertures and with each of the head portions having substantially the same configuration as the tactile warning protrusions; extending the body portions of the fasteners downwardly through the 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; removing the protective plastic sheeting after fastening the panel into the matrix with the fastener.