Patents by Inventor Fred Esser

Fred Esser 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).

  • Metallurgical plasma melting process
    Patent number: 4626654
    Abstract: A metallurgical plasma melting process wherein a plasma burner and a separate start-up burner disposed alongside same in the same port have their axes intersecting in the furnace at an acute angle. Only the start-up burner is operated initially to form a crater in material in the furnace. Thereafter the plasma burner is ignited and the start-up burner is turned off when the plasma burner is operating at full efficiency.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: December 2, 1986
    Assignee: VEB Edelstahlwerk "8 Mai 1945" Freital
    Inventors: Fred Esser, Detlev Klopper, Walter Lachner, Gerhard Scharf
  • Contact electrode for melting and heating furnaces with DC plasma heating
    Patent number: 4434494
    Abstract: The invention relates to a contact electrode for melting and heating furnaces with DC plasma heating wherein the flow body assures a uniform removal of heat over the entire end surface of the contact electrode, a temperature transmitter signals exceptional thermal loads, and a steel head is metallically connected as wear part to the end surface of the contact electrode.
    Type: Grant
    Filed: February 5, 1981
    Date of Patent: February 28, 1984
    Inventors: Herbert Pietzsch, Walter Lachner, Karlheinz Hofmann, Erich P/o/ tzsch, Fred Esser
  • Metallurgical plasma melting furnace
    Patent number: 4418414
    Abstract: A metallurgical plasma melting furnace for the melting of metals and alloys is provided with a substantially cylindrical melting vessel and a plurality of plasma burners disposed in burner openings in the walls of the vessel for creating flow stable plasma arcs. The vessel includes a first vertical cylindrical domain and a second vertical cylindrical domain divided by a vertical longitudinal plane and wherein the burners are located in the first cylindrical domain facing the second cylindrical domain and positioned such that the points of intersection of the projections of the burner axes are disposed in the second cylindrical domain and the distance between the intersection points is less than the radius of the vessel.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: November 29, 1983
    Assignee: VEB Edelstahlwerk Freital im VEB Rohrkombinat
    Inventors: Fred Esser, Detlev Klopper, Walter Lachner, Albrecht Kruger
  • Contact electrode for melting and heating furnaces with DC plasma heating
    Patent number: 4390773
    Abstract: The invention relates to a metallurgical plasma melting furnace used for the melting of metals and alloys wherein at least one auxiliary start-up burner for liquid or gaseous fuels is so arranged adjacent to each plasma burner that the hot combustion gases enter into the plasma melting furnace through the same opening in the sidewall of the furnace vessel and melt a crater into the charge material in front of the plasma burner. After the crater has reached a sufficient size, the plasma burners can be reliably operated industrially.
    Type: Grant
    Filed: February 5, 1981
    Date of Patent: June 28, 1983
    Inventors: Fred Esser, Detlev Klopper, Walter Lachner, Gerhard Scharf