Tire bead with locked end wire and its method of manufacture
AssigneeThe Goodyear Tire & Rubber Company
InventorRalph Wayne Golightly
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Abstract
The present invention provides a method of making a tire bead core (40) by winding a length of wire into a coil with at least one radially outermost layer (30) having a side-by-side relationship where each successive winding of the wire is placed adjacent to the previous winding except for the final two windings (18,19) where the wire of the next to last winding (18) is wound with a uniform gap (43) relative to the previous winding (17) and where the final winding (19) of the wire and its cut end (20) cross over the top of the next to last winding (18) and are pressed into the gap (43) and constrained by the wire of the two previous windings (17, 18).
Claims19
A tire bead core constructed by the method characterized by the steps of:
- winding a length of bead wire into a plurality of successive, superimposed rows with each of the rows having a plurality of windings;
- winding an outermost row with two successive windings just prior to the final winding being spaced from each other to form a gap that is approximately equal to the diameter of the bead wire;
- winding the final winding and its cut end to cross over the top of the next to last winding;
- and
- pressing a section of the final winding and its cut end into the gap so that the final winding is constrained therein by the two previous windings.
A tire having two tire beads located within the rubber or elastomeric matrix which makes up the radially inner-most circumference on each side of the tire, each of the tire beads comprising a tire bead core formed from a length of bead wire wound into a plurality of successive superimposed rows, each of the rows having a plurality of windings, the tire bead core characterized by:
- an outermost row having two successive windings just prior to the final winding being spaced from each other to form a gap that is approximately equal to the diameter of the bead wire;
- and
- the final winding and its cut end crossing over the top of the next to last winding and pressed into the gap and constrained therein by the two previous windings.
A tire bead core formed from a length of bead wire wound into a plurality of successive superimposed rows, each of the rows having a plurality of windings, characterized by:
- an outermost row having two successive windings just prior to the final winding being spaced from each other to form a gap that is approximately equal to the diameter of the bead wire;
- the final winding and its cut end crossing over the top of the next to last winding and pressed into the gap and constrained therein by the two previous windings.
A method of making a tire bead core characterized by the steps of:
- winding a length of bead wire into a plurality of successive, superimposed rows with each of the rows having a plurality of windings;
- winding an outermost row with two successive windings just prior to the final winding being spaced from each other to form a gap that is approximately equal to the diameter of the bead wire;
- winding the final winding and its cut end to cross over the top of the next to last winding;
- and
- pressing a section of the final winding and its cut end into the gap so that the final winding is constrained therein by the two previous windings.
Dependencies are inferred from the claim text.