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US 4,398,583 AGranted
Tire and method of applying sealant
AssigneeThe Goodyear Tire & Rubber Company
InventorWilliam R. Casey
Life of this patent
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AssigneeThe Goodyear Tire & Rubber Company
InventorWilliam R. Casey
Estimating the term…
A continuous strip of puncture sealing material is applied to an inside surface of a tire by laying and adhering a plurality of side-by-side turns of the strip with the different turns connected by angular crossing portions in the area of a first circumferential position of the tire. The first crossing portion overlaps a first end of the first turn. The other end of the strip is tapered and overlaps the last crossing portion and a portion of the last turn of the strip. The first circumferential position of the tire may be at a light spot circumferentially of the tire for improved balance of the tire. By overlapping the edge of the strip and pressing the material against the tire surface, the resulting puncture sealing layer is continuous and completely covers the surface of the tire under the crown portion for protection against punctures due to nails and other sharp objects.
A pneumatic tire rotatable about an axis and having an annular body of resilient rubberlike material with a pair of bead portions, a crown portion and sidewalls between said bead portions and said crown portion, a puncture sealing layer underlying said crown portion and comprising a continuous strip of puncture sealing material adhered to an inside surface of said crown portion, a first end portion positioned at a first axial location, a first turn of said continuous strip being laid and adhered circumferentially of said tire in an annular configuration at said first axial location and overlapping said first end portion, a first crossing portion of said continuous strip extending generally angularly to a circumferential centerline of said tire across said continuous strip to a second axial location in side-by-side relation with said continuous strip in said first axial location, at least a second turn of said continuous strip laid and adhered circumferentially of said tire to said inside surface in an annular configuration at said second axial location and an end portion of a last turn of said continuous strip overlapping a part of said last turn providing additional weight in said last turn for balancing the additional weight in said first turn due to the overlapping of said first end portion.
A method of applying a puncture sealing layer to an underside of a pneumatic tire rotatable about an axis and having a toroidal shape with sidewalls extending between a pair of annular bead portions and a crown portion comprising layer and adhering a first end of a continuous strip of puncture sealing material to an inside surface of said tire at a first circumferential position on said tire, laying and adhering at least a first turn of said continuous strip circumferentially of said tire in an annular configuration at a first axial location, overlapping said first end portion at said first axial location, laying and adhering a first crossing portion of said continuous strip extending generally angularly of a circumferential centerline of said tire across said continuous strip in said first axial location to a second axial location in side-by-side relation with said continuous strip in said first axial location, laying and adhering at least a second turn of said continuous strip circumferentially of said tire in an annular configuration at said second axial location and then overlapping a part of a last turn of said continuous strip with an end portion of said last turn providing additional weight in said last turn for balancing the additional weight in said first turn due to the overlapping of said first end portion.
Dependencies are inferred from the claim text.