Patents by Inventor James H. Leckie

James H. Leckie 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).

  • Protective device of restraining rod produced in continuous casting and rolling process
    Patent number: 4926928
    Abstract: A protective device for use in a continuous casting and rolling process for protecting an eddy current detectoor. A rod arresting means is actuated when a break in the continuous rod or bar is detected. This prevents rod having fins or projections from passing into and damaging an eddy current detector.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: May 22, 1990
    Assignee: Essex Group, Inc.
    Inventor: James H. Leckie
  • Inert gas purging during shaft furnace shut down
    Patent number: 4795490
    Abstract: Processes for providing an inert gas protective atmosphere during shut down periods of a copper melting shaft furnace are described. Upon shut down of the furnace, liquid nitrogen is introduced into the furnace interior and forms gaseous nitrogen upon vaporization. A two-stage process is employed with the initial introduction of liquid nitrogen at a high rate to flush out all oxygen bearing atmospheres from the furnace, followed by the introduction of liquid nitrogen at a lower rate sufficient to maintain the protective nitrogen atmosphere.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: January 3, 1989
    Assignee: Essex Group, Inc.
    Inventors: James H. Leckie, Horace Pops