Studded tyre having grooves
US-2024375454-A1 · Nov 14, 2024 · US
Pneumatic tire with tread having shoulder lateral grooves
US9346322B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9346322-B2 |
| Application number | US-201213409485-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 1, 2012 |
| Priority date | Mar 2, 2011 |
| Publication date | May 24, 2016 |
| Grant date | May 24, 2016 |
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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.
A pneumatic tire has a tread portion that includes a shoulder main groove and a plurality of shoulder lateral grooves. The shoulder main groove is disposed in the nearest side of a tread edge on the tread portion and extends continuously in a circumferential direction of the tire. The shoulder lateral grooves each extend from the shoulder main groove to the tread edge to form a plurality of shoulder blocks. The shoulder lateral grooves have a first portion extending from the shoulder main groove axially outside the tire and including at angle of not less than 70 degrees and less than 90 degrees with respect to a circumferential direction of the tire, and the second portion extending from the first portion axially outside the tire and inclining in a reverse direction of the first portion at angle of from 40 to 70 degrees with respect to the circumferential direction.
First claim
Opening claim text (preview).
What is claimed is: 1. A pneumatic tire comprising a tread portion comprising a shoulder main groove and a plurality of shoulder lateral grooves, the shoulder main groove being disposed in the nearest side of a tread edge on the tread portion and extending continuously in a circumferential direction of the tire, the shoulder lateral grooves each extending from the shoulder main groove to the tread edge to form a plurality of shoulder blocks between the shoulder main groove and the tread edge, wherein at least one of the shoulder lateral grooves comprises a first portion which extends axially outwardly from the shoulder main groove and is inclined at an angle of not less than 70 degrees and less than 90 degrees with respect to a circumferential direction of the tire and a second portion which extends axially outwardly from the first portion and is inclined in a reverse direction of the first portion at an angle of from 40 to 70 degrees with respect to the circumferential direction of the tire, said at least one of the shoulder lateral grooves has a shallow part having a minimum groove depth at a connection position between the first portion and the second portion, wherein the shoulder lateral groove has the minimum groove depth only at the connection position between the first portion and the second portion, and the groove depth of the shoulder lateral groove increases from the shallow part toward axially inside and outside of the tire. 2. The pneumatic tire according to claim 1 , wherein an axial length of the second portion is in a range of from 2 to 7 times an axial length of the first portion. 3. The pneumatic tire according to claim 1 or 2 , wherein the shoulder lateral groove has a constant groove width at least at the first portion and the second portion. 4. The pneumatic tire according to claim 1 , wherein the first portion and the second portion each extends in a straight form. 5. The pneumatic tire according to claim 1 , wherein a groove depth at an axially inner edge of the first portion is in a range of from 90% to 100% of a groove depth of the shoulder main groove. 6. The pneumatic tire according to claim 1 , wherein said at least one of the shoulder lateral grooves comprises a third portion which extends axially outwardly from the second portion and is inclined in a reverse direction of the second portion at an angle of from 60 to 90 degrees with respect to the circumferential direction of the tire.
Assignees
Inventors
Classifications
further characterised by the groove cross-section · CPC title
characterised by depth · CPC title
with varying depth of the groove · CPC title
characterised by the use of narrow slits or incisions, e.g. sipes · CPC title
at the centre of the tread · CPC title
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Frequently asked questions
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- What does patent US9346322B2 cover?
- A pneumatic tire has a tread portion that includes a shoulder main groove and a plurality of shoulder lateral grooves. The shoulder main groove is disposed in the nearest side of a tread edge on the tread portion and extends continuously in a circumferential direction of the tire. The shoulder lateral grooves each extend from the shoulder main groove to the tread edge to form a plurality of sho…
- Who is the assignee on this patent?
- Nishiwaki Takashi, Sumitomo Rubber Ind
- What technology area does this patent fall under?
- Primary CPC classification B60C11/0306. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 24 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).