Motorcycle tire for rough terrain
US-2015360517-A1 · Dec 17, 2015 · US
Tire groove
US2018056729A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018056729-A1 |
| Application number | US-201615253983-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 1, 2016 |
| Priority date | Aug 29, 2016 |
| Publication date | Mar 1, 2018 |
| Grant date | — |
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- Title
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- Abstract
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- Assignees and inventors
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- Key dates
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
A tire includes a tread portion having at least one circumferential main groove extending in a circumferential direction of the tire and spaced axially apart from an equator of the tire. The groove has a circumferential profile shape including an inner wall portion extending radially inward from an axially inner edge of the groove, an inner arc portion continuous with the inner wall portion and having a smaller radius of curvature than the inner wall portion, an outer wall portion extending radially inward from an axially outer edge of the groove and having a larger length than the inner wall portion, an outer arc portion continuous with the outer wall portion and having a smaller radius of curvature than the outer wall portion, and a groove bottom portion extending straight from the outer arc portion toward the inner arc portion while being inclined in a radially inward direction whereby the groove bottom portion has a constant radius of curvature.
First claim
Opening claim text (preview).
What is claimed: 1 . A tire comprising a tread portion having at least one circumferential main groove extending in a circumferential direction of the tire and spaced axially apart from an equator of the tire, the groove having a circumferential profile shape including an inner wall portion extending radially inward from an axially inner edge of the groove, an inner arc portion continuous with the inner wall portion and having a smaller radius of curvature than the inner wall portion, an outer wall portion extending radially inward from an axially outer edge of the groove and having a larger length than the inner wall portion, an outer arc portion continuous with the outer wall portion and having a smaller radius of curvature than the outer wall portion, and a groove bottom portion extending straight from the outer arc portion toward the inner arc portion while being inclined in a radially inward direction whereby the groove bottom portion has a constant radius of curvature. 2 . The tire as set forth in claim 1 wherein the groove has an axial tread surface width between 10.0 mm and 20.0 mm. 3 . The tire as set forth in claim 1 wherein the groove has an axial tread surface width of 14.84 mm. 4 . The tire as set forth in claim 1 wherein the groove has an upper base radius between 3.0 mm and 8.0 mm. 5 . The tire as set forth in claim 1 wherein the groove has an upper base radius of 5.0 mm. 6 . The tire as set forth in claim 1 wherein the groove has a bottom base radii between 1.0 mm and 5.0 mm. 7 . The tire as set forth in claim 1 wherein the groove has a bottom base radius of 3.0 mm. 8 . The tire as set forth in claim 1 wherein the groove has two asymmetric draft angles of between 0.0° and 5.0° and 10.0° and 20.0°, respectively. 9 . The tire as set forth in claim 1 wherein the groove has a draft angle radially inward of asymmetric draft angles between 10.0° and 20.0°. 10 . The tire as set forth in claim 1 wherein the groove is located at an axial position apart from the tire equator by a distance of 10.0 to 35.0 percent of an axial tread width. 11 . The tire as set forth in claim 1 wherein the groove has a radius of curvature of the outer arc portion gradually decreasing away from a radially outer tread surface of the tire. 12 . The tire as set forth in claim 1 wherein the groove extends at an angle of less than 45° with respect to the circumferential direction of the tire.
Assignees
Inventors
Classifications
asymmetric · CPC title
- B60C11/13Primary
characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping · CPC title
having variable inclination angles, e.g. warped groove walls · CPC title
with special features of the groove bottom · CPC title
Circumferential grooves · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2018056729A1 cover?
- A tire includes a tread portion having at least one circumferential main groove extending in a circumferential direction of the tire and spaced axially apart from an equator of the tire. The groove has a circumferential profile shape including an inner wall portion extending radially inward from an axially inner edge of the groove, an inner arc portion continuous with the inner wall portion and…
- Who is the assignee on this patent?
- Goodyear Tire & Rubber
- What technology area does this patent fall under?
- Primary CPC classification B60C11/13. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Mar 01 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).