The Goodyear & Tire Rubber Company

Societe Detechnologie Michelin

David Charles Poling

Samuel P Landers

Charles Kenneth Schmalix

Robert Allen Losey

Eric John Marazzi

Paul Bryan Maxwell

Billy Joe Ratliff, Jr

Aaron Scott Puhala

Cristina Marie Gschnell

Jonathan James Shondel

Karl Eric Sundkvist

Randall R Brayer

Martin Paul Cohen

Michael Julian Crawford

Walter Dale Allen

Leonard James Reiter

Bernard Matthew Bezilla, Jr

Ryan Hampton Copeland

Jeremy Elton Miracle

Donald Allan Abbott

Samuel Patrick Landers

Max Harold Dixon

Phuoc Thuan Le

Shingo Futamura

Austin Gale Young

William M Hopkins

Craig David Miller

John Kolbjoern Roedseth

Keith Eric Grabo

James Michael Hart

Daniel Ray Beha

Kuo-Chih Hua

Michael Spiro Markoff

Susan Lynn Deevers

Noelle Elizabeth Russell

Billy Joe Ratliff

Rachel Rebekah Barnette

Joseph Michael Gingo

Dana Earl Brown

Robert James Ruddock

Bernard Matthew Bezilla

The invention relates to a tire having a rubber tread comprised of cap/base construction where the tread cap layer provides the running surface of the tread and the tread base layer underlies the tread cap layer and thereby provides a transition between the tread cap layer and the tire carcass. For this invention, the tread cap layer is comprised of a plurality of individual circumferential load-bearing zones of rubber compositions, which exhibit graduated physical properties, and which extend from the outer running surface of the tread cap layer radially inward to said tread base layer. In one aspect, the zoned rubber tread cap layer and rubber tread base layer are co-extruded together to form a unit as an integral tread rubber composite.

Tire with rubber tread of circumferential zones with graduated physical properties

The invention relates to a tire having a circumferential tread of a cap/base configuration composed of an outer tread rubber cap layer with a running surface of the tread and an underlying tread rubber base layer, wherein said tread cap layer is composed of two longitudinal adjacent zones, namely a primary tread cap zone and a minor lateral outboard control element (zone). The primary tread cap zone and the lateral outboard tread cap element provide a significant gradation of cold dynamic storage moduli (G') at &#x2212;25&#xb0; C. and hot tan delta values at 100&#xb0; C., yet similar warm dynamic storage moduli (G&#x2032;) at 60&#xb0; C. The primary tread cap zone and lateral outboard control tread cap element are load bearing in the sense of extending from the running surface of the tread radially inward to the unitary (non-zoned) tread base rubber layer. The zoned rubber tread cap layer and unitary rubber tread base layer are an integral tread composite in a sense of being co-extruded. In one aspect of the invention, the primary tread cap zone rubber composition is silica-rich and the lateral, outboard element rubber composition is carbon black-rich and which furthermore provide a gradation of filler reinforcement content; provide a gradation of silica to carbon black ratio and provide a gradation of cis 1,4-polybutadiene rubber content.

Tire with circumferential rubber tread having a lateral outboard control element

A pneumatic run-flat tire has a bead configuration wherein the axially inner end is radially inward of the axially outer end of the bead. The sidewall of the tire, from the bead region to the upper sidewall is reinforced to form a pillar support in the sidewall. The bead configuration and the pillar reinforcement enable the tire to lock itself onto a tire rim during low pressure operation and be self-supporting.

Pneumatic run-flat tire

A run-flat tire has a radial carcass reinforcement ply extending through a pair of opposing sidewalls and anchored in opposing bead portions. At least one of the bead portions having a bead heel and a bead toe wherein the bead heel is radially outward and axially inward from the bead toe. At least one of the bead portions has a bead composite and a bead apex therein. The bead composite has a maximum axial width W, the axial width being measured perpendicular to the tire equatorial plane. The maximum axial width Wis greater than 50% of the maximum axial width W of the at least one bead portion, as measured from the opposing axial sides of the bead portion.

Pneumatic tire with bead composite

Tire sidewall

Tire tread

Shoulder tread for a tire

A tire has a carcass reinforcement extending between a pair of opposing bead portion. At least one of the bead portions terminates axially to the outside by a tip and is intended to be mounted on a wheel rim having a bead seat that has an axially outer end closer to the axis of rotation than the axially inner end thereof. Within the bead portion are a bead ring and a bead apex. The radial carcass reinforcement ply is anchored in each bead portion and has at least one terminal end located in the bead portion. In the bead portion, the reinforcement ply passing radially inward of the bead ring, extending axially outward of the bead ring. The reinforcement ply terminates without passing back under the bead ring.

Pneumatic tire with specified carcass ply turn-up

Growing community of inventors

Uniontown, OH, United States of America

David Charles Poling