Patents Assigned to IUSRD (Ireland) Limited
  • 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