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US 10,850,575 B2Granted
Pneumatic tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorsNaoki Yukawa, Yogun Kida, Mutsuki Sugimoto, Satoshi Yamada
Life of this patent
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Abstract
Provided is a pneumatic tire in which a sealant layer entirely exhibits sufficient sealing performance. The present invention relates to a pneumatic tire including a sealant layer located radially inside an innerliner, the sealant layer being formed by continuously and spirally applying a generally string-shaped sealant to the inner periphery of a tire in the tire width direction from one side to the other, the attachment start portion of the sealant being located tire-widthwise inward from the tire-widthwise end of the sealant layer.
Claims5
A pneumatic tire, comprising:
- a sealant layer located radially inside an innerliner,
- wherein the sealant layer is formed by continuously and spirally applying a generally string-shaped sealant to the inner periphery of a tire in a tire width direction from one side to the other,
- wherein one end in the longitudinal direction of the sealant is located tire-widthwise inward from a tire-widthwise end of the sealant layer as to form an attachment start portion,
- wherein the viscosity at 40° C. of the sealant is 3,000 Pa·s to 70,000 Pa·s,
- wherein the sealant layer has a segment from the one end in the longitudinal direction of generally string-shaped sealant to the tire-widthwise end of the sealant layer and an adjacent segment from the tire-widthwise end of the sealant layer to the other tire-widthwise end of the sealant layer,
- wherein the adjacent segment from the tire-widthwise end of the sealant layer to the other tire-widthwise end of the sealant layer is located radially inside the segment from the one end in the longitudinal direction of generally string-shaped sealant to the tire-widthwise end of the sealant layer,
- wherein the segment from the one end in the longitudinal direction of generally string-shaped sealant to the tire-widthwise end of the sealant layer being formed of a generally string-shaped sealant provided continuously along an inner periphery of the tire,
- wherein the adjacent segment from the tire-widthwise end of the sealant layer to the other tire-widthwise end of the sealant layer being formed of a generally string-shaped sealant provided continuously and spirally, and
- wherein every value of generally string-shaped sealant volume per unit length in the longitudinal direction of the generally string-shaped sealant is smaller in the segment from the one end in the longitudinal direction of generally string-shaped sealant to the tire-widthwise end of the sealant layer than in the adjacent segment from the tire-widthwise end of the sealant layer to the other tire-widthwise end of the sealant layer.
6 more elements
Dependencies are inferred from the claim text.