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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 10189317 B1

PDFFull Text
Date of Patent:
Jan. 29, 2019

Filed:

Oct. 04, 2013

Pneumatic tire having twisted bead cords

Applicant:

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

Inventor:

Kei Kohara, Kobe, JP;

Assignee:

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

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Robert C Dye

Assistant Examiner:

Sedef E Paquette

Int. Cl.
CPC ...
B60C 15/05 (2006.01); B29D 30/10 (2006.01); B60C 15/04 (2006.01); B29D 30/48 (2006.01); B29D 30/18 (2006.01); B60C 5/12 (2006.01); B60C 9/02 (2006.01); B60C 15/00 (2006.01); B60C 9/04 (2006.01);
U.S. Cl.
CPC ...
B60C 15/05 (2013.01); B29D 30/10 (2013.01); B29D 30/18 (2013.01); B29D 30/48 (2013.01); B60C 5/12 (2013.01); B60C 9/02 (2013.01); B60C 15/0018 (2013.01); B60C 15/04 (2013.01); B29D 2030/487 (2013.01); B60C 2009/0416 (2013.01); B60C 2015/044 (2013.01);
Abstract

A pneumatic tire to reduce separation of a carcass ply from inner and outer core pieces () and improve steering stability. A radially inner end portion of the carcass ply is held between the inner and outer core pieces () without turning-up around a bead core. The inner and outer core pieces () are made of helical body of bead cord () helically winding around a tire axis. In the inner core piece (), the final twisting direction of the bead cord () is the same as the winding direction around the tire axis of the bead cord () in side view from axial outward of the tire. In the outer core piece (), the final twisting direction of the bead cord () is opposite to the winding direction of the bead cord ().

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