Patents by Inventor Damian J. Kotecki

Damian J. Kotecki 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: 8168922
    Abstract: A cored electrode to form a high manganese metal deposition that includes at least about 4 weight percent manganese and at least about 10 weight percent chromium which is useful in joining dissimilar metals and/or for depositing buffer layers on carbon steel and/or low alloy steels.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: May 1, 2012
    Assignee: Lincoln Global, Inc.
    Inventor: Damian J. Kotecki
  • Patent number: 7409869
    Abstract: A method for evaluating thermal fatigue resistance for a welding consumable alloy can include the following steps: placing a test specimen of a welding consumable alloy in a testing device such that a tensile load and a compressive load can be introduced to the test specimen; heating the test specimen to a first temperature; applying a compressive force to the test specimen while heating the test specimen; cooling the test specimen to a second temperature; and applying a tensile force to the test specimen while cooling the test specimen.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: August 12, 2008
    Assignee: Lincol Global, Inc.
    Inventors: Damian J. Kotecki, Sudarsanam S. Babu
  • Patent number: 6339209
    Abstract: A flux for use in arc welding of a stainless steel workpiece with a consumable metal electrode, which welding flux comprises a zirconia containing system for forming a slag on the surface of the deposited weld metal. The flux system contains zirconia, silica and titania. The zirconia and titania are contained the flux system in a ratio of at least 1:1.5. The flux system can also include a melting control agent, a fluoride, an arc stabilizer, a slag removal agent and/or a bead wetting agent. Also, there is provided an electrode employing this flux.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: January 15, 2002
    Assignee: Lincoln Global, Inc.
    Inventor: Damian J. Kotecki
  • Patent number: 5120931
    Abstract: A flux for use in arc welding of a stainless steel workpiece with a consumable metal electrode having a precentage of chromium, which welding flux comprises a silica containing system for forming a slag on the surface of the deposited chromium-bearing alloy weld metal and a bismuth containing slag releasing agent selected from the class consisting of elemental bismuth, bismuth fluoride, bismuth sulfide, bismuth titanate, bismuth oxy carbonate, bismuth oxy-chloride and mixtures thereof. Also, there is provided an electrode employing this flux.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: June 9, 1992
    Assignee: The Lincoln Electric Company
    Inventors: Damian J. Kotecki, Jonathan S. Ogborn
  • Patent number: 4449031
    Abstract: In a tubular composite electrode for depositing stainless steel or nickel-base alloy weld metal, satisfactory performance in vertical up welding is achieved through the inclusion in the electrode core of a slag mix comprising 15 to 60% weight percent zirconium dioxide.
    Type: Grant
    Filed: January 20, 1982
    Date of Patent: May 15, 1984
    Assignee: Teledyne Industries, Inc.
    Inventor: Damian J. Kotecki
  • Patent number: 4314136
    Abstract: In a tubular composite electrode for depositing stainless steel weld metal, satisfactory performance in vertical up welding is achieved through the inclusion in the electrode core of a slag mix comprising 15 to 60% weight percent zirconium dioxide.
    Type: Grant
    Filed: April 16, 1980
    Date of Patent: February 2, 1982
    Assignee: Teledyne Industries, Inc.
    Inventor: Damian J. Kotecki
  • Patent number: 4294614
    Abstract: An austenitic iron-base cryogenic alloy consisting essentially of, in weight percent,______________________________________ Carbon 0.20 max. Manganese 3.5 to 7.0 Silicon 0.75 max. Chromium 13.0 to 17.0 Nickel 14.0 min. Molybdenum 1 to 3 Iron plus unavoidable impurities Balance, ______________________________________and containing no more than 2 FN delta ferrite, said alloy displaying at least 15 mils lateral expansion when impact tested by the Charpy V-notch test at -320 F. Also, a tubular composite arc welding electrode which deposits such alloy.
    Type: Grant
    Filed: October 17, 1979
    Date of Patent: October 13, 1981
    Assignee: Teledyne Industries, Inc.
    Inventor: Damian J. Kotecki