Pneumatic tire
US-2018236824-A1 · Aug 23, 2018 · US
Pneumatic tire comprising first and second sealant layers
US11639042B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11639042-B2 |
| Application number | US-201916424741-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 29, 2019 |
| Priority date | Jun 27, 2018 |
| Publication date | May 2, 2023 |
| Grant date | May 2, 2023 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
The present invention provides a pneumatic tire including a sealant layer that has excellent tear resistance despite its being formed of a generally string-shaped sealant provided continuously and spirally along an inner periphery of the tire. Included is a pneumatic tire including an innerliner and a sealant layer located radially inside the innerliner, the sealant layer including a first sealant layer and a second sealant layer stacked in that order from the innerliner, the first sealant layer including a generally string-shaped sealant provided continuously and spirally along an inner periphery of the tire, the second sealant layer including a generally string-shaped sealant provided continuously and spirally along the first sealant layer, the sealant of the first sealant layer and the sealant of the second sealant layer extending in directions crossing each other.
First claim
Opening claim text (preview).
The invention claimed is: 1. A pneumatic tire, comprising an innerliner and a sealant layer located radially inside the innerliner, the sealant layer comprising a first sealant layer and a second sealant layer stacked in that order from the innerliner, the first sealant layer comprising a generally string-shaped sealant provided continuously and spirally along an inner periphery of the tire, the second sealant layer comprising a generally string-shaped sealant provided continuously and spirally along the first sealant layer, and the sealant of the first sealant layer and the sealant of the second sealant layer extending in directions crossing each other, wherein an angle of the generally string-shaped sealant in the first sealant layer relative to the tire circumferential direction is between 0.025° and 0.200° and an angle of the generally string-shaped sealant in the second sealant layer relative to the tire circumferential direction is between 0.025° and 0.200°. 2. The pneumatic tire according to claim 1 , wherein the sealant of the first sealant layer and the sealant of the second sealant layer both have a pitch width of 2 mm to 5 mm, and the sealant of the first sealant layer and the sealant of the second sealant layer extend in directions crossing each other at an angle θ satisfying the following equation (1): θ=arctan(the pitch width of the sealant of the first sealant layer/the inner perimeter of the tire)+arctan(the pitch width of the sealant of the second sealant layer/the inner perimeter of the tire). 3. The pneumatic tire according to claim 1 , wherein the first sealant layer and the second sealant layer have different viscosities from each other. 4. The pneumatic tire according to claim 1 , wherein the first sealant layer has a lower viscosity than the second sealant layer. 5. The pneumatic tire according to claim 1 , wherein the first sealant layer and the second sealant layer have different thicknesses from each other. 6. A pneumatic tire, comprising an innerliner and a sealant layer located radially inside the innerliner, the sealant layer comprising a first sealant layer and a second sealant layer stacked in that order from the innerliner, the first sealant layer comprising a generally string-shaped sealant provided continuously and spirally along an inner periphery of the tire, the second sealant layer comprising a generally string-shaped sealant provided continuously and spirally along the first sealant layer, and the sealant of the first sealant layer and the sealant of the second sealant layer extending in directions crossing each other, wherein an angle at which a direction of the generally string-shaped sealant in the first sealant layer intersects a direction along which the generally string-shaped sealant in the second sealant layer relative to the tire circumferential direction is between 0.050° and 0.400°.
Assignees
Inventors
Classifications
the sealant being in the form of one or more narrow strips, e.g. applied by winding into the interior of the tyre · CPC title
the article material only consisting in part of a deformable sealing material · CPC title
- B60C19/122Primary
disposed inside of the inner liner · CPC title
provided partially, i.e. not covering the whole inner wall · CPC title
Sealant in plural layers or plural pockets · CPC title
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Frequently asked questions
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- What does patent US11639042B2 cover?
- The present invention provides a pneumatic tire including a sealant layer that has excellent tear resistance despite its being formed of a generally string-shaped sealant provided continuously and spirally along an inner periphery of the tire. Included is a pneumatic tire including an innerliner and a sealant layer located radially inside the innerliner, the sealant layer including a first seal…
- Who is the assignee on this patent?
- Sumitomo Rubber Ind
- What technology area does this patent fall under?
- Primary CPC classification B60C19/122. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 02 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).