Patents by Inventor Frank W. Spring

Frank W. Spring 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).

  • Apparatus and method for supplying inert gas to a welding location
    Patent number: 5669547
    Abstract: An apparatus for providing inert gas to a desired location for a welding operation is provided. The apparatus includes a gas feed line and structure for mounting the feed line to extend in a first direction in a pipe. A gas locator tube communicates with the gas feed line to direct inert gas from the gas feed line in a second direction, different from the first direction, towards a pipe joint to be welded. The locator tube is capable of continually directing inert gas in the second direction as the pipe is rotated during a welding operation.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: September 23, 1997
    Assignee: Praxair Technology, Inc.
    Inventor: Frank W. Spring