Patents by Inventor Matthew J. Walling

Matthew J. Walling 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).

  • Cutter for removing dross produced by a plasma arc torch
    Patent number: 5266775
    Abstract: Molten metal created during cutting of a workpiece by a plasma-arc torch is discharged downwardly into a tubular collector duct. A power-rotated cutter is located adjacent the upper end of the duct and shaves dross from the underside of the workpiece as the latter is moved beneath the torch, the dross also being discharged downwardly into the duct. Water is sprayed into the duct to cool the duct and is also sprayed against the rotary cutter to cool the cutter as the dross is shaved from the workpiece.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: November 30, 1993
    Assignee: W. A. Whitney Co.
    Inventors: Theodore F. Brolund, Matthew J. Walling