The Goodyear & Tire Rubber Company

Wayne David Maas

John Michael Maloney

William Frank Dunn

John Ronald Abbott

Roger Alden Fleming

David L King

Michael Lynn Hooper

When the pressure on a reinforced rubber object is varied, weaker portions of the object expand more than surrounding areas of the object. By (a) illuminating the object with single phase monochromatic light which is separated into more than one beam, (b) causing the object to distort by abrasion or expansion, (c) observing the interference patterns on the object as it distorts and (d) analyzing stress patterns revealed by the interference patterns, these physical changes can be detected, recorded and analyzed.

Method for dynamic interference pattern testing

A tire assembly comprising outer and inner tires having at least one vent and one plug is described. The vents and plugs mate in the assembly providing an air tight seal in the bead seal region of the tires. The vents or plugs permit air to escape from the outer tire if an attempt is made to mount the outer tire on a rim without a mating inner tire.

Tire assembly with inner and outer tires having cooperating vent

Growing community of inventors

Copley, OH, United States of America

Wayne David Maas