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US 7,438,961 B2Granted
Plies sleeve for use in forming an elastomeric tire
AssigneeAmerityre
InventorsRichard A. Steinke, Theodore M. Love
Life of this patent
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AssigneeAmerityre
InventorsRichard A. Steinke, Theodore M. Love
Estimating the term…
A plies sleeve for use in forming a core of plies and beads on a core build mandrel where the plies sleeve is woven as a tubular sleeve having a uniform circumference that will stretch laterally, increasing the sleeve circumference to fit over a top surface or crown of the core build mandrel and is of a length to where each sleeve side will fold down an opposite core build mandrel side, passing around a tire bead, back up the cored build mandrel side and over the top surface or crown edge. Which outward sleeve stretching is provided by a select weave where Rayon cords are spiral wound as vertical components of approximately seven point (7.5) pics per inch, and elastic cords are included as horizontal components of approximately eight (8) pics per inch that are formed as pre-cure elastic cords from a urethane material and are cotton wound, to allow for sleeve stretching and provide for a return of the plies sleeve to its un-stretched state.
A plies sleeve for use in a formation of a plies, beads and belts for installation in a mold for forming an elastomeric tire therearound comprising, a woven tubular sleeve having a uniform diameter along its length, and a weave that is a lattice of interlaced cords selected to form said tubular sleeve that will allow said tubular sleeve to stretch around its circumference to fit over a tire core build mandrel top surface or crown, and to retract into snug fitting engagement over and around said tire core build mandrel top surface or crown, and which said weave incorporates spiral woven Rayon cords that are spaced at equal distance apart and interlace with and cross elastic cords and said elastic cords are formed from an elastic polyurethane pre-cure material that are wound with cotton along each said elastic cord length, and said pre-cure material will cure with the exothermic heat of reaction of a urethane mixture selected to form a tire around a core that includes said plies sleeve, providing a chemical mechanical lock within the formed tire to said Rayon cords and cotton windings.
Dependencies are inferred from the claim text.