Patents by Inventor Donald Zahrte, Sr.

Donald Zahrte, Sr. 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).

  • AC controlled relay drive circuit
    Patent number: 11381076
    Abstract: A drive circuit includes a voltage input circuit, a first surge protection device, and a second surge protection device. The voltage input circuit includes a first line terminal and a second line terminal, and supplies an input voltage to the first and second line terminals. The first surge protection device is connected between the first line terminal and ground to connect the first line terminal to ground when the input voltage is supplied, and to disconnect the first line terminal from ground when the input voltage is not supplied. The second surge protection device is connected between the second line terminal and ground to connect the second line terminal to ground when the input voltage is supplied, and to disconnect the second line terminal from ground when the input voltage is not supplied.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: July 5, 2022
    Assignee: The Vollrath Company, L.L.C.
    Inventor: Donald Zahrte, Sr.
  • AC CONTROLLED RELAY DRIVE CIRCUIT
    Publication number: 20200052484
    Abstract: A drive circuit includes a voltage input circuit, a first surge protection device, and a second surge protection device. The voltage input circuit includes a first line terminal and a second line terminal, and supplies an input voltage to the first and second line terminals. The first surge protection device is connected between the first line terminal and ground to connect the first line terminal to ground when the input voltage is supplied, and to disconnect the first line terminal from ground when the input voltage is not supplied. The second surge protection device is connected between the second line terminal and ground to connect the second line terminal to ground when the input voltage is supplied, and to disconnect the second line terminal from ground when the input voltage is not supplied.
    Type: Application
    Filed: August 9, 2019
    Publication date: February 13, 2020
    Inventor: Donald Zahrte, SR.
  • System for detecting defective battery packs
    Patent number: 7132833
    Abstract: An electrical cabinet for an uninterruptibe power supply (UPS) system includes universal slots that can receive power modules, battery packs, or chargers. The back plane of the slot has connector terminals for battery packs and power modules. The cabinet can be easily reconfigured as desired by changing the number of power modules chargers or battery packs installed. Circuitry is provided that indicates the capacity and operational readiness of the cabinet. This circuitry monitors the battery packs in each slot, and isolates any detected fault to a particular pack.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: November 7, 2006
    Assignee: Powerware Corporation
    Inventors: David Layden, Craig Edevold, Cary Winch, Donald Zahrte, Sr.
  • System for detecting defective battery packs
    Publication number: 20020136042
    Abstract: An electrical cabinet for an uninterruptibe power supply (UPS) system includes universal slots that can receive power modules, battery packs, or chargers. The back plane of the slot has connector terminals for battery packs and power modules. The cabinet can be easily reconfigured as desired by changing the number of power modules chargers or battery packs installed. Circuitry is provided that indicates the capacity and operational readiness of the cabinet. This circuitry monitors the battery packs in each slot, and isolates any detected fault to a particular pack.
    Type: Application
    Filed: January 17, 2002
    Publication date: September 26, 2002
    Inventors: David Layden, Craig Edevold, Cary Winch, Donald Zahrte, Sr.