Patents by Inventor Vaidyanath B. Rajan

Vaidyanath B. Rajan 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: 9149891
    Abstract: A metal core electrode used to form weld deposits having improved slag forming properties with respect to reduced accumulation of slag in toes of the weld bead. The metal cored electrode includes a metal rod and a fill composition. The electrode includes a slag-modifying additive that contains metallic indium and/or one or more indium compounds.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: October 6, 2015
    Assignee: Lincoln Global, Inc.
    Inventor: Vaidyanath B. Rajan
  • Patent number: 9024229
    Abstract: The method of optimizing performance of a weld includes determining a set of specified mechanical properties, such as hardness or toughness for the weld, selecting a base metal material, selecting a welding process and welding process conditions, and selecting a weld metal material. The weld metal material and/or the base metal material may be selected by determining a characterization of the weld or base metal material, the characterization including performing a thermal-mechanical simulation of the metal materials and determining the properties of the metals produced by the thermal-mechanical simulation, and subsequently correlating the characterization of the metal materials with the set of specified mechanical properties and the welding process conditions. The method may also include producing said weld having said set of mechanical properties.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: May 5, 2015
    Assignee: Lincoln Global, Inc.
    Inventors: Marie A. Quintana, Vaidyanath B. Rajan, Joe Daniel
  • Patent number: 8664567
    Abstract: A metal cored electrode used to form a weld metal on a workpiece having improved yield strength, tensile strength and impact toughness by the combination of molybdenum, titanium and boron, the electrode containing at least about 0.001 weight percent boron, at least about 0.05 weight percent molybdenum, at least about 0.005 weight percent titanium and a majority of iron, the above metal alloy system having an average yield strength of at least about 70 ksi and an average tensile strength of at least about 90 ksi.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: March 4, 2014
    Assignee: Lincoln Global, Inc.
    Inventors: Dennis K. Hartman, Vaidyanath B. Rajan
  • Publication number: 20130082039
    Abstract: The method of optimizing performance of a weld includes determining a set of specified mechanical properties, such as hardness or toughness for the weld, selecting a base metal material, selecting a welding process and welding process conditions, and selecting a weld metal material. The weld metal material and/or the base metal material may be selected by determining a characterization of the weld or base metal material, the characterization including performing a thermal-mechanical simulation of the metal materials and determining the properties of the metals produced by the thermal-mechanical simulation, and subsequently correlating the characterization of the metal materials with the set of specified mechanical properties and the welding process conditions. The method may also include producing said weld having said set of mechanical properties.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Applicant: Lincoln Global, Inc.
    Inventors: Marie A. Quintana, Vaidyanath B. Rajan, Joe Daniel
  • Publication number: 20130055565
    Abstract: The outer metal sheath of a cored welding electrode is made by twin roll casting without cold rolling.
    Type: Application
    Filed: November 5, 2012
    Publication date: March 7, 2013
    Applicant: LINCOLN GLOBAL, INC.
    Inventors: Marie A. Quintana, Janet Morse, Jonathan Sterling Ogborn, Greg Gerth, Vaidyanath B. Rajan, Radhika R. Panday
  • Patent number: 8365912
    Abstract: A wire containment structure includes a container and a bag. The container includes a sidewall that at least partially defines a container receptacle. The sidewall defines a first handle aperture and a second handle aperture. The bag is configured to entirely support a wire stack. The bag is disposed at least partially within the container receptacle and comprises a body, a first handle, and a second handle. The body defines a wire receptacle. The first handle is coupled with the body and is routed through the first handle aperture. The second handle is coupled with the body and is routed through the second handle aperture.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: February 5, 2013
    Assignee: Lincoln Global, Inc.
    Inventors: Michael A. Carroscia, Vaidyanath B. Rajan
  • Publication number: 20120097672
    Abstract: A wire containment structure includes a container and a bag. The container includes a sidewall that at least partially defines a container receptacle. The sidewall defines a first handle aperture and a second handle aperture. The bag is configured to entirely support a wire stack. The bag is disposed at least partially within the container receptacle and comprises a body, a first handle, and a second handle. The body defines a wire receptacle. The first handle is coupled with the body and is routed through the first handle aperture. The second handle is coupled with the body and is routed through the second handle aperture.
    Type: Application
    Filed: October 21, 2010
    Publication date: April 26, 2012
    Inventors: Michael A. Carroscia, Vaidyanath B. Rajan
  • Publication number: 20110100970
    Abstract: The outer metal sheath of a cored welding electrode is made by twin roll casting without cold rolling.
    Type: Application
    Filed: August 23, 2010
    Publication date: May 5, 2011
    Applicant: Lincoln Global, Inc.
    Inventors: Marie A. Quintana, Janet Morse, Jonathan Sterling Ogborn, Greg Gerth, Vaidyanath B. Rajan, Radhika R. Panday