Patents by Inventor Robert David Wittenbach

Robert David Wittenbach 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).

  • Self draining orifice for pneumatic lines
    Patent number: 6539977
    Abstract: Drainage is enhanced in an orifice formed inside the internal passage of a pneumatic line by providing the orifice with first and second portions. The first portion defines a diameter that is smaller than the diameter of the internal passage, and the second portion defines a progressively increasing diameter. Generally, a first end of the second portion has a diameter that is equal to the first portion diameter, and a second end of the second portion has a diameter that is equal to the internal passage diameter.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: April 1, 2003
    Assignee: General Electric Company
    Inventors: Rick Neil Hutchinson, Robert David Wittenbach