Patents by Inventor George Thomas Winterhalter, Sr.

George Thomas Winterhalter, Sr. 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).

  • Method for machining an "O" ring retention groove into a curved surface
    Patent number: 5857897
    Abstract: A method for cutting an "O" ring retention groove around the cutting edge of a hydropiercing die button. A groove machining tool is given a convex curved end surface the radius of which is slightly less than or, at most, substantially equal to the tightest concave radius that the end surface will have to sweep through as the groove is cut. Consequently, an accurate, slightly curved groove bottom surface is created for the "O" ring, while the machining tool will not bind as it moves through the tightest concave portion of the cutting path.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: January 12, 1999
    Assignee: General Motors Corporation
    Inventors: Glenn Mark Krcek, Bruce Steven Shimanovski, Sanjay Mahasukhlal Shah, George Thomas Winterhalter, Sr.