Patent ID: 7979970
Filing Date: 2011-07-19
Classification: B21C,B23P,B65H,Y10T

Abstract:
1. Apparatus for repairing an out-of-round tubular member having a substantially circular closed loop configuration, comprising: a first arcuately configured member, having a predetermined radiused curvature, adapted to be disposed internally within a deformed, out-of-round tubular member having a substantially circular closed loop configuration so as to be disposed in contact with a first internal peripheral surface portion of the deformed, out-of-round tubular member; a second arcuately configured member, having a predetermined radiused curvature, adapted to be disposed internally within the deformed, out-of-round tubular member so as to be disposed in contact with a second internal peripheral surface portion of the deformed, out-of-round tubular member which is disposed substantially diametrically opposite the first internal peripheral surface portion of the deformed, out-of-round tubular member; and an extensible/contractible device interconnecting said first and second arcuately configured members together for alternatively moving said first and second arcuately configured members toward each other to relatively CONTRACTED positions so as to permit said first and second arcuately configured members to be disposed internally within the deformed, out-of-round tubular member, and for moving said first and second arcuately configured members away from each other to relatively EXTENDED positions so as to cause said first and second arcuately configured members to forcefully engage the first and second inner peripheral portions of the deform-ed, out-of-round tubular member in order to return the de-formed, out-of-round tubular member to a tubular member having a substantially true circular, closed loop round configuration.