Patents by Inventor Edward J. Pennington

Edward J. Pennington 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).

  • Laser welding of galvanized steel
    Patent number: 4642446
    Abstract: An improved method is disclosed for producing a welded joint between galvanized steel sheet members utilizing a laser beam or the like. Surface regions of the galvanized member in the weld zone are selectively pretreated to remove the zinc coating and apply a nickel-base coating. The nickel coating avoids the vaporization problems associated with zinc, while providing suitable corrosion protection in the welded joint.
    Type: Grant
    Filed: October 3, 1985
    Date of Patent: February 10, 1987
    Assignee: General Motors Corporation
    Inventor: Edward J. Pennington