Patents by Inventor Arthur L. Lewis

Arthur L. Lewis 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).

  • Techniques for resistance welding attachments to small pressure vessels
    Patent number: 6548780
    Abstract: A technique for resistance welding an attachment such as a collar or base ring to a tank head section by causing welding current to flow through weld protrusions disposed on the attachment and which are pressed against the tank section. Electrodes are contacted to the attachment and the tank section in such a manner to provide for substantially equal welding current paths through the protrusions.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: April 15, 2003
    Assignee: Manchester Tank and Equipment Company
    Inventor: Arthur L. Lewis
  • Techniques for resistance welding attachments to small pressure vessels
    Publication number: 20020117479
    Abstract: A technique for resistance welding an attachment such as a collar or base ring to a tank head section by causing welding current to flow through weld protrusions disposed on the attachment and which are pressed against the tank section. Electrodes are contacted to the attachment and the tank section in such a manner to provide for substantially equal welding current paths through the protrusions.
    Type: Application
    Filed: February 28, 2001
    Publication date: August 29, 2002
    Inventor: Arthur L. Lewis