The Goodyear & Tire Rubber Company

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Stephan Rodewald

Olivier De Barsy

Andreas Frantzen

Anne Therese Peronnet-Paquin

Carolin Anna Welter

Joseph John Kulig

Jeannot Frieden

Marc Borowczak

Didier Winkin

Dinesh Chandra

Nizar Toumni

Jean-Marie Feller

Benjamin Isaiah Garn

Thomas Sherwood Fleischman

Betul Buehler

Daniel Vojtko

Jungmee Kang

Christopher Vincent Neal, Sr

Zhonghe Bo

Nagendra Prasad Venkata Akshantala

Laurent Licht

Jean-Bernard Bodeux

Felix Maximo Vilchez Macuri

Xu Ding

Mahesh Kavaturu

Ronald Willis White

Osama Hamzeh

Thomas Sherwood Fleischmann

A self-inflating tire assembly includes an air tube mounted within a tire sidewall groove. The air tube is in contacting engagement with opposite angled groove surfaces surrounding the air tube. A segment of the air tube is flattened from an expanded diameter to a flat diameter by bending and compression of the groove in a rolling tire footprint to force air evacuated from the flattened segment along a tube air passageway. The sidewall groove extends into an annular, axially extending, sidewall surface such as an axially oriented surface of a tire chafer protrusion located in non-contacting relationship with the rim. The air tube is extruded from a rubber composition, the rubber composition comprising: a diene based rubber; from 0.25 to 5 parts by weight, per 100 parts by weight of rubber (phr), of a self-lubrication agent capable of migrating from the rubber composition to the groove surface and disposing on the groove surface as a liquid; and from 1 to 15 parts by weight, per 100 parts by weight of rubber (phr), of a vulcanization modifier for use in the second rubber composition include α,ω-bis(N,N′-dihydrocarbylthiocarbamamoyldithio)alkanes, bismaleimides, and biscitraconimides.

Air maintenance tire

A self-inflating tire assembly includes an air tube mounted within a tire sidewall groove. The air tube is in contacting engagement with opposite angled groove surfaces surrounding the air tube. A segment of the air tube is flattened from an expanded diameter to a flat diameter by bending and compression of the groove in a rolling tire footprint to force air evacuated from the flattened segment along a tube air passageway. The sidewall groove extends into an annular, axially extending, sidewall surface such as an axially oriented surface of a tire chafer protrusion located in non-contacting relationship with the rim. The opposite groove surfaces comprise a rubber composition, the rubber composition comprising: a diene based rubber; from 0.25 to 5 parts by weight, per 100 parts by weight of rubber (phr), of a self-lubrication agent capable of migrating from the rubber composition to the groove surface and disposing on the groove surface as a liquid; and from 1 to 15 parts by weight, per 100 parts by weight of rubber (phr), of a vulcanization modifier for use in the second rubber composition include &#x3b1;,&#x3c9;-bis(N,N'-dihydrocarbylthiocarbamamoyldithio)alkanes, bismaleimides, and biscitraconimides.

The present invention is directed to a pneumatic tire comprising a sidewall component, the sidewall component including an air passageway extending at least partially about the circumference of the tire, the air passageway surrounded by and in fluid communication with a surface comprising a rubber composition, the rubber composition comprising: a diene based rubber; from 0.25 to 5 parts by weight, per 100 parts by weight of rubber (phr), of a self-lubrication agent capable of migrating from the rubber composition to the groove surface and disposing on the groove surface as a liquid; and from 1 to 15 parts by weight, per 100 parts by weight of rubber (phr), of a vulcanization modifier for use in the second rubber composition include &#x3b1;,&#x3c9;-bis(N,N'-dihydrocarbylthiocarbamamoyldithio)alkanes, bismaleimides, and biscitraconimides.

A pneumatic radial tire has at least one carcass reinforcing ply and a pair of opposing bead portions. Each bead portion has a bead core and a bead apex, while the carcass reinforcing ply has a main portion and two turnups, with one turnup extending from each end of the main portion and having a terminal end. In each bead portion, there is a minimum distance Dbetween the carcass main portion and the carcass turnup, as measured perpendicular to the tire equatorial plane EP. The distance Dis not less than 50% of the maximum bead core width Was measured perpendicular to the equatorial plane EP. In each bead portion, radially outward of the minimum distance D, a radially outermost portion of the carcass turnup extends at an angle so the radially outermost portion of the carcass turnup is divergent from the carcass main portion.

Pneumatic tire

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Copley, OH, United States of America

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