Patents by Inventor Karunakar Reddy Gujja

Karunakar Reddy Gujja 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).

  • Power supply fan management
    Patent number: 11758701
    Abstract: A power supply includes a casing; an AC-to-DC converter; an inverter electrically coupled to the AC-to-DC converter; a transformer having a primary side and a secondary side, wherein the inverter is electrically coupled to the primary side of the transformer; an output rectifier electrically coupled to the secondary side of the transformer; a fan, disposed in the casing and configured to remove heat from the casing generated by the AC-to-DC converter, the inverter and the output rectifier; and a fan controller configured to control when the fan is operational, wherein the fan controller is configured to execute a state machine that is configured to change states based at least on a dynamically adjustable counter.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: September 12, 2023
    Assignee: The ESAB Group, Inc.
    Inventors: Lee Roy Mantell, Karunakar Reddy Gujja, Roger Clinton Williamson, IV
  • Power Supply Fan Management
    Publication number: 20210219469
    Abstract: A power supply includes a casing; an AC-to-DC converter; an inverter electrically coupled to the AC-to-DC converter; a transformer having a primary side and a secondary side, wherein the inverter is electrically coupled to the primary side of the transformer; an output rectifier electrically coupled to the secondary side of the transformer; a fan, disposed in the casing and configured to remove heat from the casing generated by the AC-to-DC converter, the inverter and the output rectifier; and a fan controller configured to control when the fan is operational, wherein the fan controller is configured to execute a state machine that is configured to change states based at least on a dynamically adjustable counter.
    Type: Application
    Filed: January 25, 2021
    Publication date: July 15, 2021
    Inventors: Lee Roy Mantell, Karunakar Reddy Gujja, Roger Clinton Williamson, IV
  • Power supply fan management
    Patent number: 10939593
    Abstract: A power supply includes a casing; an AC-to-DC converter; an inverter electrically coupled to the AC-to-DC converter; a transformer having a primary side and a secondary side, wherein the inverter is electrically coupled to the primary side of the transformer; an output rectifier electrically coupled to the secondary side of the transformer; a fan, disposed in the casing and configured to remove heat from the casing generated by the AC-to-DC converter, the inverter and the output rectifier; and a fan controller configured to control when the fan is operational, wherein the fan controller is configured to execute a state machine that is configured to change states based at least on a dynamically adjustable counter.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: March 2, 2021
    Assignee: The ESAB Group Inc.
    Inventors: Lee Roy Mantell, Karunakar Reddy Gujja, Roger Clinton Williamson, IV
  • Power Supply Fan Management
    Publication number: 20200344921
    Abstract: A power supply includes a casing; an AC-to-DC converter; an inverter electrically coupled to the AC-to-DC converter; a transformer having a primary side and a secondary side, wherein the inverter is electrically coupled to the primary side of the transformer; an output rectifier electrically coupled to the secondary side of the transformer; a fan, disposed in the casing and configured to remove heat from the casing generated by the AC-to-DC converter, the inverter and the output rectifier; and a fan controller configured to control when the fan is operational, wherein the fan controller is configured to execute a state machine that is configured to change states based at least on a dynamically adjustable counter.
    Type: Application
    Filed: April 29, 2019
    Publication date: October 29, 2020
    Inventors: Lee Roy Mantell, Karunakar Reddy Gujja, Roger Clinton Williamson, IV
  • HIGH TEMPERATURE THERMOELECTRIC GENERATOR
    Publication number: 20120031451
    Abstract: The present invention relates to a high temperature thermoelectric generator. The generator includes at least one thermocouple thermally connected to a high temperature surface, a power management circuit adapted to receive electric power from the at least one thermocouple and provide a regulated output voltage, and a storage device adapted to receive the regulated output voltage from the power management circuit such that the output voltage charges the storage device.
    Type: Application
    Filed: August 4, 2010
    Publication date: February 9, 2012
    Applicant: THE UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE
    Inventors: Robert Cox, Ivan Howitt, Karunakar Reddy Gujja