Patents by Inventor Harley A. Tripp

Harley A. Tripp has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Quality control for sucker rods
    Patent number: 4700577
    Abstract: A method for testing fiberglass sucker rods wherein the rod is pulled to a predetermined stress level while measuring the load, elongation and acoustic emissions. The load versus displacement is plotted in real time while the measured values are used to calculate the modulus of elasticity for various load ranges. From the measurements and calculated modulus of elasticity the quality of the rod can be determined.
    Type: Grant
    Filed: October 9, 1986
    Date of Patent: October 20, 1987
    Assignee: Shell Oil Company
    Inventor: Harley A. Tripp