Patents by Inventor Daniel A. Leverett

Daniel A. Leverett 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).

  • Switching power supply, method of operation and device-and-power-supply assembly
    Patent number: 7227652
    Abstract: A switching power supply, with or without a secondary side controller, is connectable to a power-supply-using device (such as a printer without a power supply) receiving a voltage from the power-supply's secondary side. The device has a device controller (such as a printer controller) which controls the device, wherein the power supply is adapted to receive a power-supply control signal or power-supply control data from the device controller. A method for operating the switching power supply includes using the power-supply control signal or the power-supply control data to generate an input control signal for the power supply's primary side controller. A device-and-power-supply assembly (such as a printer) includes a switching power supply lacking a secondary side controller and includes a power-supply-using device having a device controller (such as a printer controller) wherein the power supply is adapted to receive a power-supply control signal from the device controller.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: June 5, 2007
    Assignee: Lexmark International, Inc.
    Inventors: Darell D. Cronch, Hugh E. Gilbert, Daniel A. Leverett
  • Switching power supply, method of operation and device-and-power-supply assembly
    Publication number: 20040075703
    Abstract: A switching power supply, with or without a secondary side controller, is connectable to a power-supply-using device (such as a printer without a power supply) receiving a voltage from the power-supply's secondary side. The device has a device controller (such as a printer controller) which controls the device, wherein the power supply is adapted to receive a power-supply control signal or power-supply control data from the device controller. A method for operating the switching power supply includes using the power-supply control signal or the power-supply control data to generate an input control signal for the power supply's primary side controller. A device-and-power-supply assembly (such as a printer) includes a switching power supply lacking a secondary side controller and includes a power-supply-using device having a device controller (such as a printer controller) wherein the power supply is adapted to receive a power-supply control signal from the device controller.
    Type: Application
    Filed: October 17, 2002
    Publication date: April 22, 2004
    Inventors: Darell D. Cronch, Hugh E. Gilbert, Daniel A. Leverett