The Goodyear & Tire Rubber Company

Johan Peter Dahlberg

Maurice Graas

Jerome Marcel Germain Delu

Laurent Luigi Domenico Colantonio

Walter Dale Allen

Frédéric Michel-Jean Pons

Stéphane Houchard

Richard Heinen

Filomeno Gennaro Corvasce

Laurent Colantonio

Frank Philpott

Gauthier Piret

Marc Hedo

Philippe Marie Manne

Tire

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 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

The present invention relates to a radial ply tire ( ) with a tread ( ) subdivided transversely into a central portion ( ) having central ribs ( ), shoulder portions ( ) having shoulder ribs ( ) and intermediate portions ( ) having intermediate ribs between the central portion and the shoulder portions. The tread has intermediate grooves ( ) between the central ribs and the intermediate ribs ( ) and shoulder decoupling grooves ( ) between the intermediate ribs and the shoulder ribs ( ). The shoulder decoupling grooves having a depth (D ) being less than the intermediate decoupling grooves whereby the footprint width of the tread surface can expand from first width (NLFPW) under normal load to a second width (HLFPW) under heavy load.

Pneumatic tire having a load dependent adaptive footprint shape

Tire tread

Growing community of inventors

Luxembourg, Luxembourg

Johan Peter Dahlberg