Patents by Inventor Robert G. J. Jack

Robert G. J. Jack 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).

  • Apparatus and method for manufacturing hollow shafts
    Patent number: 6629632
    Abstract: An apparatus and method for welding a shaft having an open seam defined between opposed longitudinal edges. The method comprising passing the shaft along its longitudinal axis through an array of pressure rollers which contact the surface of the shaft at a plurality of discrete points and compress the shaft by applying inwardly directed radial forces to the shaft. An electrical resistance welding assembly welds the seam while closed by the pressure rollers.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: October 7, 2003
    Assignee: IUSRD (Ireland) Limited
    Inventors: Robert G. J. Jack, Geoffrey Brook
  • Grounding device
    Publication number: 20020060083
    Abstract: A grounding device for attachment to the base of a steel utility pole comprises a length of steel pipe with two lengths of steel angle iron welded across one end of the pipe at an angle to one another.
    Type: Application
    Filed: September 26, 2001
    Publication date: May 23, 2002
    Inventors: Geoffrey Brook, Robert G. J. Jack