Patents by Inventor Geoffery H. Putnam

Geoffery H. Putnam 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).

  • Plasma arc torch electrode
    Patent number: 7132619
    Abstract: A variety of electrodes for use in a plasma arc torch are provided that improve cooling between the electrode and an adjacent cathodic element such as a cathode. At least one passageway is formed between the electrode and the cathode for the flow of a fluid, e.g. cooling fluid, wherein the flow of the fluid is proximate, or through an adjacent vicinity of, electrical contact between the cathode and the electrode. The passageway is formed through the electrode, through the cathode, between the electrode and the cathode, and through a third element in the various forms of the present invention. Further, methods of operating a plasma arc torch using the electrodes according to the various forms of the invention are also provided.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: November 7, 2006
    Assignee: Thermal Dynamics Corporation
    Inventors: Christopher J. Conway, Darrin H. MacKenzie, Milind G. Kelkar, Geoffery H. Putnam
  • Plasma arc torch electrode
    Publication number: 20040195219
    Abstract: A variety of electrodes for use in a plasma arc torch are provided that improve cooling between the electrode and an adjacent cathodic element such as a cathode. At least one passageway is formed between the electrode and the cathode for the flow of a fluid, e.g. cooling fluid, wherein the flow of the fluid is proximate, or through an adjacent vicinity of, electrical contact between the cathode and the electrode. The passageway is formed through the electrode, through the cathode, between the electrode and the cathode, and through a third element in the various forms of the present invention. Further, methods of operating a plasma arc torch using the electrodes according to the various forms of the invention are also provided.
    Type: Application
    Filed: January 16, 2004
    Publication date: October 7, 2004
    Inventors: Christopher J. Conway, Darrin H. MacKenzie, Milind G. Kelkar, Geoffery H. Putnam