Patents by Inventor Pradeepkumar Kirshan Mallenahalli

Pradeepkumar Kirshan Mallenahalli 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).

  • Single side girth welding apparatus and method
    Patent number: 6392193
    Abstract: The present invention provides an apparatus and method for achieving single-sided girth welds which adapt to and compensate for inherent geometrically induced difficulties in single-side girth welding applications. The inherent geometrically induced difficulties include those caused by axial misalignment, angular misalignment, and mismatched ovality. The present invention's apparatus and method minimize root defects due to undercut, incomplete penetration, excess penetration, or lack of fusion. The present invention provides accordingly limits defects introduced during the welding process and thus limiting fatigue failures. The present invention does not require the use of backing strips. The present invention further utilizes an improved lineup clamp for use in single-sided girth welding which does not cause damage to the interior of the pipes being welded.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: May 21, 2002
    Assignee: Frank's Casing Crew and Rental Tools, Inc.
    Inventors: Pradeepkumar Kirshan Mallenahalli, Dale J. Castille