The B. F. Goodrich Company

Uniroyal Goodrich Licensing Services, Inc.

Joe A Powell

James W Messerly

Ronald L Shippy

Shamim Ahmad

Leonard A Kopka

Paul C James

Kenneth V Kenreich

An improved radial tire is reinforced with at least two carcass plies of radial rubberized cords wherein a radial inner or first ply extends continuously from one bead portion to another bead portion through the sidewall areas and across the crown of the tire and a radial outer or second ply in continuous contact with the inner ply has two sections disposed such that the second ply is discontinuous or interrupted in the crown area. The second ply is also foreshortened in the bead portion of the tire rather than being wrapped around the bead. An inner liner is also in constant contact with the inner ply from bead portion to bead portion without being wrapped therearound.

Pneumatic tire having discontinuous outer carcass ply

A self supporting tire having a nonstaining high modulus low hysteresis inner sidewall composition comprising: (a) 100 parts by weight of sulfur vulcanizable rubber of which from about 50 to about 95 parts by weight is natural rubber and/or cis-polyisoprene and from about 5 to about 50 parts by weight is at least one elastomer selected from the group consisting of styrene-butadiene and cis-polybutadiene; and (b) from about 25 to about 80 parts by weight of carbon black per 100 parts by weight of rubber, wherein said carbon black has a dibutyl phthalate absorption value greater than about 80 and a particle size less than about 50 milli-microns. The self supporting tire is capable of operating both as a pneumatic tire under ordinary inflated conditions and also has the capability of operating without inflation for limited distance.

Self supporting tire

A puncture sealing tire has an inner layer consisting of closed cell cellular rubber, in direct contact with the inflation gas. The inner layer is preferably coated with a solid fluent material capable of flowing into punctures at operating temperatures.

Puncture sealing tire

A pneumatic tire having a casing which defines in part an internal annular inflation chamber is provided with a small amount of low density, discrete, cellular, resilient, polymeric fibers within the inflation chamber to provide a reduction in the rate of inflation loss from the chamber upon puncture. Each fiber has many closed cells filled with gas and the polymer portion of each fiber is substantially all present as thin, filmy cellular walls. The fibers may be of varying length and may be added to the inflation chamber before or after tire is mounted on its rim.

Pneumatic tire with reduced rate of inflation loss upon being punctured

A pneumatic tire is balanced by applying a counterbalance material to the tire characterized in that the balancing material is a thin layer of a polyolefin which adheres to the inside surface of the carcass by means of surface tension alone.

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Norton, OH, United States of America

Joe A Powell