The Goodyear & Tire Rubber Company

Walter Dale Allen

Warren L Croyle

Keith Eric Grabo

Laurent Luigi Domenico Colantonio

Frank Philpott

Billy Joe Ratliff, Jr

Samuel P Landers

Charles Kenneth Schmalix

Robert Allen Losey

Filomeno Gennaro Corvasce

Randall R Brayer

David Charles Poling

Eric John Marazzi

David Ray Hubbell

Marc Christopher Nowacki

Laurent Colantonio

Johan Peter Dahlberg

Paul Bryan Maxwell

Giorgio Agostini

Brian David Digman

Daniel Ray Beha

Anne Therese Peronnet-Paquin

Mark Henry Seloover

John Janes Beck, Jr

Sebastian Willy Fontaine

Anthony Curtis Paonessa

Marc Hedo

Steven Craig Roweder

A pneumatic tire is capable of operation during underinflated condition and the construction of sidewalls are configured to compensate for negative cambers acting upon the tire. The inboard side of the tire is softened in comparison to the outboard side of the tire. This is achieved by either forming an asymmetrical tire in either the tire profile or the internal construction.

Asymmetrical pneumatic run-flat tire

A pneumatic tire with a tread has at least two axially adjacent tread elements, the elements being separated by a groove and each element having opposing lateral sides. Connecting the axially adjacent tread elements is at least one traction biting element. The biting element has three continuous portions. The first portion extends along the lateral side of the first tread element. The second portion extends through the separating groove. The third portion extends along the lateral side of the second tread element. Each biting element forms at least two distinct edges along the lateral sides of each tread element and two distinct edges in the separating grooves.

Pneumatic tire with tread including biting elements

Tire tread

A self-supporting pneumatic tire is molded in such a manner that ride comfort is improved, durability is increased, and a greater run-flat capability can be achieved. The self-supporting run-flat tire is molded such that the molded bead base width is equal or less than the rim width of the intended rim upon which the tire is to be mounted. By molding the tire with a bead width less than or equal to the rim width, the sidewall inserts are not subjected to additional stress during and after inflation of the tire and the strain energy is more evenly distributed through the sidewall pillar construction.

Self-supporting pneumatic tire

Shoulder tread for a tire

Disclosed is a pneumatic run-flat tire. The tire has at least one carcass reinforcing ply, at least one pair of sidewall wedge inserts, and a belt reinforcing structure. The belt reinforcing structure is formed from at least a pair of cross cord belt reinforcing plies. Located radially outward of the carcass reinforcing ply is a porous elastomeric layer. The porous elastomeric layer has a porosity level of 20 to 80%, preferably 40&#x2013;70%, of the total volume of the porous elastomeric layer.

Pneumatic run-flat tire with porous elastomeric layer

The present invention is a crown-stiffening underlay structure comprised of a flat strip of elastomeric material reinforced with essentially inextensible cords. The cord-reinforced flat strip is wrapped helically around the green tire carcass prior to blowup into the characteristic toroidal shape of a tire carcass. In one embodiment, the underlay structure is disposed between breakers and the radial ply structure. In another embodiment, the underlay is disposed between the radial ply structure and the innerliner. In another embodiment, the afore described underlay structure has an additional and structurally contiguous beam made of elastomeric material.

Underlay structure for increased crown stiffening

A runflat pneumatic tire has a tread stiffening member radially inward of the tread . The tire has a deflected section height H under load at 30 psi inflation and a deflected section height H at 0 psi wherein the deflection D are equal to or less than D &minus;D and the net contact area at 0 psi has a perimeter dynamic contact shape of at least U shaped or rectangular.

Runflat tire with tread stiffening member

Growing community of inventors

Akron, OH, United States of America

Walter Dale Allen