Tire repair unit

Claim 1

A tire repair unit comprising a plurality of sheet-form, rubberized cord plies assembled in superposed, stacked relationship with opposed surfaces of adjacent plies secured in contacting engagement with each ply having a plurality of cords that are all disposed in parallel relationship to each other and are formed in a planar layer extending substantially across said ply and adjacent plies arranged with the cords thereof oriented in predetermined relationship to each other, each of said plies being of a configuration wherein the cords thereof disposed laterally outward with respect to a central longitudinal axis are of progressively shorter length in proportional relationship to increasing displacement from the longitudinal axis, a first one of said plies being of predetermined size in surface area with each succeeding ply disposed in stacked relationship thereto being progressively larger in surface area with said plies being oriented with respect to each other whereby each ply disposed adjacent a next smaller size ply has a peripheral marginal edge portion extending a distance outwardly of the entire peripheral edge of that next adjacent smaller size ply, and an uncured rubber layer disposed in overlying relationship to the plies assembled in superposed stacked relationship at the side thereof adjacent said first ply, said uncured rubber layer being of a size in area to be at least coextensive with the largest of said plies for direct bonding of all of said first one of said plies and direct bonding of the peripheral marginal edge portion of each of the other of said plies to a tire casing.