The Goodyear & Tire Rubber Company

Charles L Makinson

John A Lovell

Charles John Pearson

Robert K Rossi

David A Du Vernay

Kenneth C Sutter

David Z Tyson

A cured rubber tire has adhered thereto a layer of heated and mixed, productive urethane composition fluid sidewall material which has been flowed from a nozzle into a groove in the sidewall of a shaped tire. The tire is rotated under the nozzle a distance equal to the circumferential length of the groove so that the ends of the layer may be joined after which the flow of productive urethane composition sidewall material is terminated.

Apparatus for applying polyurethane layer to tire sidewall

A tire prepared by molding in one or more first molds of at least two separate annular tire body parts of an elastomer composition and stabilizing same, a set of said tire body parts forming a complete tire body exclusive of tread, transferring said parts to a second annular mold which positions them in the same relationship to one another that they will have in the completed tire and introducing into said second mold a predetermined quantity of an elastomer composition to join said parts and form an annular tread about the crown thereof.

Method of making tires

An injector mounted on a carriage having an elevator is movable along a row of conventional mold press units each having an article mold, and is movable vertically to register with a selected mold. The press units and the molds therein are separate and independent of one another. Injection parameters are preset and activated upon registry of the injector with a selected mold, independently of the mold-to-mold sequence selected. Conventional mold press units (clamps) are simply modified to cooperate with the injector. The foregoing abstract is not to be taken as limiting the invention of this application, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be made to the accompanying drawing and the following detailed description.

Growing community of inventors

Akron, OH, United States of America

Charles L Makinson