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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10308082 B1

PDFFull Text
Date of Patent:
Jun. 04, 2019

Filed:

Jun. 25, 2013

Run-flat tire

Applicant:

Sumitomo Rubber Industries, Ltd., Kobe-shi, Hyogo, JP;

Inventor:

Naoki Sugiyama, Kobe, JP;

Assignee:

SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-Shi, Hyogo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Jacob T Minskey

Assistant Examiner:

Melody Tsui

Int. Cl.
CPC ...
B60C 17/00 (2006.01); B29D 30/12 (2006.01); B60C 9/02 (2006.01); B60C 3/00 (2006.01); B60C 5/12 (2006.01); B60C 13/00 (2006.01); B60C 15/00 (2006.01); B29D 30/20 (2006.01);
U.S. Cl.
CPC ...
B60C 17/0009 (2013.01); B29D 30/12 (2013.01); B60C 3/00 (2013.01); B60C 5/12 (2013.01); B60C 9/023 (2013.01); B60C 13/00 (2013.01); B60C 15/00 (2013.01); B60C 15/0018 (2013.01); B60C 17/0045 (2013.01); B29D 2030/201 (2013.01); B60C 2013/026 (2013.01); B60C 2017/0063 (2013.01);
Abstract

It is a run-flat tireprovided with a carcassextending from a tread portionthrough a sidewall portionto a bead corein a bead portion, and a side-reinforcement rubber layerdisposed inside the carcassin the sidewall portionand having a substantially crescent-shaped cross-section. In a tire meridian cross section including the tire rotational axis under a normal state such that the tire is mounted on a normal rim, inflated to a normal internal pressure and loaded with no load, the tire inner-cavity surfaceincludes a side inner-cavity surface. A distance in the tire radial direction of the side inner-cavity surfacefrom a bead toeof the bead portionis in a range of 0.4 times to 0.9 times the length H in the tire radial direction of the tire inner-cavity surface. The side inner-cavity surfaceincludes a smooth surfacewhich does not have unevenness, and the total surface area of the smooth surfaceis more than 90% of the total area of the side inner-cavity surface

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