Patents by Inventor Robert P. Munz

Robert P. Munz 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: 5369244
    Abstract: A flux cored arc welding electrode of the type used with external shielding gas wherein the electrode comprises an outer ferrous sheath and a particulate fill material comprising an acidic flux system and alloying agents with the fill material including an arc stabilizer, titanium dioxide, calcium fluoride, an alloying system of 0-4.0 percent by weight of electrode selected from the class consisting of aluminum, silicon, titanium, carbon and manganese. Iron powder controls the percentage of the fill of the electrode and 0.2-1.0 percent by weight of electrode is polytetrafluoroethylene powder.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: November 29, 1994
    Assignee: The Lincoln Electric Company
    Inventors: Karl J. Kulikowski, Robert P. Munz
  • Patent number: 5365036
    Abstract: A cored electrode for gas shielded arc welding to deposit a weld metal bead, where the electrode has a core of fill material surrounded by a ferrous tube with the fill material having alloying agents and oxide fluxing ingredients including, by weight of fill material, 40-60% titanium dioxide, 0.3-0.5% boron oxide, and 1.0-5.0% aluminum powder, with the aluminum powder having a higher affinity for oxygen than the oxide fluxing ingredients and with the amount of aluminum powder selected to produce 0.02-0.08% titanium, less than 0.002% boron and less than 0.10% aluminum in the weld metal.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: November 15, 1994
    Assignee: The Lincoln Electric Company
    Inventors: Dennis D. Crockett, Ronald J. Gordish, Karl J. Kulikowski, Robert P. Munz
  • Patent number: 5233160
    Abstract: A consumable welding electrode for electric arc welding in a shielding gas and producing reduced amounts of fume during said welding comprising in combination a steel sheath and a filler within the sheath. The filler including metallic aluminum powder and a dual stabilizing agent of sodium oxide and potassium oxide, wherein the dual stabilizing agent and said aluminum have about a 2.4:1 to 3.5:1 weight ratio.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: August 3, 1993
    Assignee: The Lincoln Electric Company
    Inventors: Ronald J. Gordish, Robert P. Munz, Dennis D. Crockett
  • Patent number: 5015823
    Abstract: A high manganese weld bead and electrode for producing same which has higher abrasion resistance and hardness than heretofore and is economical to manufacture. The deposit contains approximately 0.4-0.7% C, 10-16% Mn and 4.5 to 7.5% Cr.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: May 14, 1991
    Assignee: The Lincoln Electric Company
    Inventors: Dennis D. Crockett, Robert P. Munz
  • Patent number: 4833296
    Abstract: An improved consumable electric arc welding electrode having an outer ferrous metal sheath, such as a low carbon steel sheath, which is formed around a generally concentric core of compressed particulate fill material to be used for depositing an all weld metal of steel in multiple passes with a minimum tensile strength of about 72,000 psi and a minimum elongation of about 22 percent wherein the fill material includes aluminum in an amount greater than about 1.50 percent of the total electrode weight to provide a correlated amount of aluminum in the deposited metal. This improvement involves a particulate fill material producing a combination of nickel and manganese content in the range of 2.5-4.0 percent by weight of the total electrode with the nickel being greater than about 0.5 percent, the manganese being in the range of 0.7-2.
    Type: Grant
    Filed: December 29, 1987
    Date of Patent: May 23, 1989
    Assignee: The Lincoln Electric Company
    Inventors: Dennis D. Crockett, Robert P. Munz
  • Patent number: 4723061
    Abstract: A flux cored welding electrode for use in electric arc welding with a shielded gas, which electrode includes a tube of low carbon steel having on the inside thereof a titanium dioxide based flux with fluxing ingredients including aluminum oxide in the amount of 0.1 to 0.5% of the total weight of the electrode. The improvement of the invention wherein the titanium dioxide based flux with aluminum oxide free of magnesium or compounds of magnesium.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: February 2, 1988
    Assignee: The Lincoln Electric Company
    Inventors: Robert P. Munz, John R. Gonzalez, Ronald J. Gordish
  • Patent number: 3947655
    Abstract: A cored type arc-welding steel electrode for the welding of 14 gauge to 3/8 inch thick mild steel wherein the ingredients in the core provide a smooth spray arc that is easy to control along with excellent bead appearance, low spatter, and good slag removal. The core ingredients include: calcium oxide, as a necessary compound, in a prefused mix to lower its hygroscopicity; aluminum and magnesium in controlled amounts; and selected fluorides.
    Type: Grant
    Filed: May 15, 1974
    Date of Patent: March 30, 1976
    Assignee: The Lincoln Electric Company
    Inventors: John Gonzalez, Robert P. Munz