Patents Represented by Attorney Charles W. Shifley

Find this attorney in the Justia Lawyer Directory

  • Rheometer and process of curing and testing rubber
    Patent number: 4546438
    Abstract: A rheometer and process of curing and testing rubber samples precisely controls each cure and test. The maximum resistance, or more specifically, maximum torque at peak stress, is predicted for each sample automatically as curing progresses. Each cure and test is terminated as soon as maximum resistance is predicted, thereby shortening each cure and test from about one-quarter to one-third.
    Type: Grant
    Filed: September 27, 1983
    Date of Patent: October 8, 1985
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: William T. Prewitt, James A. Van Dyke