Patents by Inventor Jeffrey T Sitz

Jeffrey T Sitz 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).

  • Pipeline patch trolley
    Patent number: 6626447
    Abstract: A vehicle for transporting and installing an annular patch in a pipeline having a curved inside surface. There is a tubular support member and an annular bladder mounted on the support member for forcing the patch against the inside of the pipeline when inflated. Pivoting wheel assemblies are mounted to the ends of the tubular support member so that the wheels extend normal to the curved inside surface of the pipeline. A ballast member is mounted between the wheel assemblies to maintain the vehicle in an upright orientation. Compressed air for inflating the bladder is supplied by hose to a fitting within the hollow interior of the tubular support. The wheel assemblies may be removable or inwardly pivotable so as to provide clearance for the patch to be slipped over the support and bladder.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: September 30, 2003
    Assignee: Barnard Construction Co., Inc.
    Inventors: Joseph P Nelson, Jeffrey T Sitz, Scott W Brady, Rick P. Meyer, Kirt J. Rierson
  • Pipeline patch trolley
    Publication number: 20010033065
    Abstract: A vehicle for transporting and installing an annular patch in a pipeline having a curved inside surface. There is a tubular support member and an annular bladder mounted on the support member for forcing the patch against the inside of the pipeline when inflated. Pivoting wheel assemblies are mounted to the ends of the tubular support member so that the wheels extend normal to the curved inside surface of the pipeline. A ballast member is mounted between the wheel assemblies to maintain the vehicle in an upright orientation. Compressed air for inflating the bladder is supplied by hose to a fitting within the hollow interior of the tubular support. The wheel assemblies may be removable or inwardly pivotable so as to provide clearance for the patch to be slipped over the support and bladder.
    Type: Application
    Filed: January 29, 2001
    Publication date: October 25, 2001
    Inventors: Joseph P. Nelson, Jeffrey T. Sitz, Scott W. Brady, Rick P. Meyer, Kirt J. Rierson