Run flat tire
US-2017057302-A1 · Mar 2, 2017 · US
Pneumatic tire
US10328753B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10328753-B2 |
| Application number | US-201515127772-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 24, 2015 |
| Priority date | Jan 19, 2015 |
| Publication date | Jun 25, 2019 |
| Grant date | Jun 25, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A pneumatic tire includes a reinforcing rubber layer disposed in the sidewall portions, the reinforcing rubber layer having a crescent-like meridian cross-section. When the tire is assembled on a regular rim and in an unloaded state with an internal pressure of 0 kPa, a radius of curvature (RP) is smaller than a radius of curvature (RO), an arc of the radius of curvature (RP) joining an intersection (Pa) of a carcass layer and a straight line (La), an intersection (Pb) of the carcass layer and a straight line (Lb), and an intersection (Pc) of the carcass layer and a straight line (Lc), and an arc of the radius of curvature (RO) joining an intersection (Oa) of the straight line (La) and a tire external contour, an intersection (Ob) of the straight line (Lb) and the tire external contour, and an intersection (Oc) of the straight line (Lc) and the tire external contour.
First claim
Opening claim text (preview).
The invention claimed is: 1. A pneumatic tire comprising: a reinforcing rubber layer disposed in sidewall portions on both sides in a tire width direction, the reinforcing rubber layer having a substantially crescent-like meridian cross-section; wherein when the tire is assembled on a regular rim and in an unloaded state with an internal pressure of 0 kPa, a radius of curvature RP is smaller than a radius of curvature RO, an arc of the radius of curvature RP joining an intersection Pa of a carcass layer and a straight line La, an intersection Pb of the carcass layer and a straight line Lb, and an intersection Pc of the carcass layer and a straight line Lc, and an arc of the radius of curvature RO joining an intersection Oa of the straight line La and a tire external contour, an intersection Ob of the straight line Lb and the tire external contour, and an intersection Oc of the straight line Lc and the tire external contour, where the straight line Lc is a straight line orthogonal to a tire equatorial plane at a portion of the tire with a maximum width when viewed in a meridian cross section, the straight line La is a straight line from an intersection of the straight line Lc and the tire equatorial plane inclined by 10° outward in a tire radial direction with respect to the straight line Lc, the straight line Lb is a straight line from the intersection of the straight line Lc and the tire equatorial plane inclined by 10° inward in the tire radial direction with respect to the straight line Lc, a relationship between a cross-sectional width Aip, a cross-sectional width Apo, a cross-sectional width Bip, and a cross-sectional width Bpo satisfies: Bip/Bpo<Aip/Apo≤Bip/Bpo×5.0 and Bip>Bpo, where the cross-sectional width Aip is the cross-sectional width from the intersection Ia of the straight line La and the tire internal contour to the intersection Pa of the straight line La and the carcass layer, within which the reinforcing rubber layer is disposed, the cross-sectional width Apo is the cross-sectional width from the intersection Pa to the intersection Oa of the straight line La and the tire external contour, the cross-sectional width Bip is a cross-sectional width from an intersection Ib of the straight line Lb and the tire internal contour to the intersection Pb of the straight line Lb and the carcass layer, within which the reinforcing rubber layer is disposed, and the cross-sectional width Bpo is a cross-sectional width from the intersection Pb to the intersection Ob of the straight line Lb and the tire external contour. 2. The pneumatic tire according to claim 1 , wherein carcass cords of the carcass layer are made from rayon.
Assignees
Inventors
Classifications
characterised by sidewall curvature · CPC title
Reinforcements made of synthetic materials · CPC title
Compositions of the carcass layers · CPC title
Modulus of the ply · CPC title
characterised by special physical properties of the carcass ply · CPC title
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Frequently asked questions
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- What does patent US10328753B2 cover?
- A pneumatic tire includes a reinforcing rubber layer disposed in the sidewall portions, the reinforcing rubber layer having a crescent-like meridian cross-section. When the tire is assembled on a regular rim and in an unloaded state with an internal pressure of 0 kPa, a radius of curvature (RP) is smaller than a radius of curvature (RO), an arc of the radius of curvature (RP) joining an interse…
- Who is the assignee on this patent?
- Yokohama Rubber Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60C17/0009. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jun 25 2019 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).