Patents by Inventor Bernard A. Wabel

Bernard A. Wabel 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).

  • Prepared joint for a tube fitting
    Patent number: 4076287
    Abstract: An improved prepared joint is provided on a fitting for mechanically joining it to the end of a metal tube. The fitting has a grooved bore and a bore extending end portion for projecting the bore a predetermined distance beyond its grooved portion so that during radial expansion of the tube into the grooved portion the entire expanded length of the tube is fully supported within the fitting. Such support is effective in extending the useful life of the tube assembly formed by the fitting and tube by alleviating metal fatigue failures due to vibrational bending stresses in the expanded portion of the tube.
    Type: Grant
    Filed: November 8, 1976
    Date of Patent: February 28, 1978
    Assignee: Caterpillar Tractor Co.
    Inventors: Roland F. Bill, Edward G. Prohaska, Bernard A. Wabel