Patents by Inventor Joshua Lee Welton

Joshua Lee Welton 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).

  • Electronic proof of air flow switch
    Patent number: 12099074
    Abstract: A method and apparatus to electronically sense air flow and close a switch when air flow is adequate to operate an electric heater, HVACR system, or other apparatus. The apparatus is more reliable than electro-mechanical devices often used for this purpose.
    Type: Grant
    Filed: August 5, 2021
    Date of Patent: September 24, 2024
    Assignee: Evolution Controls Inc.
    Inventors: David Lee Haessig, Joshua Lee Welton
  • HVAC motor control local display and adjustment methods and apparatus for same
    Patent number: 12025329
    Abstract: A method and apparatus for a visual local controller (VLC) for a variable speed motor (VS Motor) or other controlled device in an HVACR system to display the output in engineering units instead of the traditional percent of motor output or similar output, and to limit the output to a range between a high limit and a low limit, is disclosed. An engineering units display allows end users to directly see output as performed by the connected HVACR equipment. In place of zero to one-hundred percent output, the user may see torque, CFM, actual control voltage or other engineering units associated with the controlled HVACR equipment. Limiting the output allows the output to be constrained between high and low output limits to keep the connected device operating within a safe range for the HVACR equipment.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: July 2, 2024
    Assignee: Evolution Controls Inc.
    Inventors: David Lee Haessig, Ronald Sai Kit Yip, Roger Hort, Joshua Lee Welton
  • HVAC Motor Control Local Display and Adjustment Methods and Apparatus for Same
    Publication number: 20220186964
    Abstract: A method and apparatus for a visual local controller (VLC) for a variable speed motor (VS Motor) or other controlled device in an HVACR system to display the output in engineering units instead of the traditional percent of motor output or similar output, and to limit the output to a range between a high limit and a low limit, is disclosed. An engineering units display allows end users to directly see output as performed by the connected HVACR equipment. In place of zero to one-hundred percent output, the user may see torque, CFM, actual control voltage or other engineering units associated with the controlled HVACR equipment. Limiting the output allows the output to be constrained between high and low output limits to keep the connected device operating within a safe range for the HVACR equipment.
    Type: Application
    Filed: December 3, 2021
    Publication date: June 16, 2022
    Applicant: Evolution Controls Inc.
    Inventors: David Lee Haessig, Ronald Sai Kit Yip, Roger Hort, Joshua Lee Welton
  • Electronic Proof of Air Flow Switch
    Publication number: 20220043021
    Abstract: A method and apparatus to electronically sense air flow and close a switch when air flow is adequate to operate an electric heater, HVACR system, or other apparatus. The apparatus is more reliable than electro-mechanical devices often used for this purpose.
    Type: Application
    Filed: August 5, 2021
    Publication date: February 10, 2022
    Applicant: Evolution Controls Inc.
    Inventors: David Lee Haessig, Joshua Lee Welton