Patents by Inventor Stephen K. Hanby

Stephen K. Hanby 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).

  • Patent number: 6390134
    Abstract: A method and apparatus for reducing the amount of gas consumed during welding operations by reducing gas-surge principally for M.I.G. and T.I.G. welding systems. A preferred embodiment consists of a series of removable orifice bodies which may be threaded into a valve body. The removable orifice bodies restrict the maximum rate at which gas can flow from through the welding system. Gas-flow cannot exceed the maximum rate permitted by the particular diameter of the removable orifice body used, but may be adjusted up or down by substituting one of a plurality of available interchangeable orifice bodies. To allow for a higher gas flow rate, an orifice body with a larger diameter gas flow passage is used. For a lower gas flow rate, an orifice body with a smaller gas flow passage is used.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: May 21, 2002
    Inventor: Stephen K. Hanby