Patents by Inventor Lars Gerdin

Lars Gerdin 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).

  • Multivoltage welding apparatus
    Patent number: 10086466
    Abstract: An apparatus may include an input circuit to receive an AC input voltage having a first magnitude within a range of AC input voltages, and generate a first DC voltage; a boost converter to receive the first DC voltage and output a second DC voltage having a fixed magnitude that is not dependent upon the first magnitude of the AC input voltage; an output circuit to receive the second DC voltage and convert the second DC voltage into welding type power; a control DC-DC converter to receive the first DC voltage and output a control power signal as a third DC voltage; a boost converter control component to receive the control power signal and generate a control signal to control operation of the boost converter; and an auxiliary AC power source to receive the second DC voltage output by the boost converter and to generate an AC auxiliary output voltage.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: October 2, 2018
    Assignee: ESAB AB
    Inventors: Vaijnath Bhimrao Admuthe, Lars Gerdin, Pimple Vinay Vilas, Pisal Kiran Uttam, Dave Homeshkumar Bhanushanker
  • Multivoltage Welding Apparatus
    Publication number: 20170232544
    Abstract: An apparatus may include an input circuit to receive an AC input voltage having a first magnitude within a range of AC input voltages, and generate a first DC voltage; a boost converter to receive the first DC voltage and output a second DC voltage having a fixed magnitude that is not dependent upon the first magnitude of the AC input voltage; an output circuit to receive the second DC voltage and convert the second DC voltage into welding type power; a control DC-DC converter to receive the first DC voltage and output a control power signal as a third DC voltage; a boost converter control component to receive the control power signal and generate a control signal to control operation of the boost converter; and an auxiliary AC power source to receive the second DC voltage output by the boost converter and to generate an AC auxiliary output voltage.
    Type: Application
    Filed: May 2, 2017
    Publication date: August 17, 2017
    Inventors: Vaijnath Bhimrao ADMUTHE, Lars GERDIN, Pimple Vinay VILAS, Pisal Kiran UTTAM, Dave Homeshkumar BHANUSHANKER
  • Welding apparatus
    Patent number: D467257
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: December 17, 2002
    Assignee: Esab AB
    Inventors: Malin Andersson, Lars Gerdin
  • Control box for welding machines such as electric welding machines such as arc welding machines or arc welders
    Patent number: D402268
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: December 8, 1998
    Assignee: ESAB Aktiebolag
    Inventors: Lars Gerdin, Ronald Korber, Per berg