Patents by Inventor David L Ried

David L Ried 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).

  • Integrated soft start and safety shutdown
    Patent number: 10135367
    Abstract: The subject matter of this specification can be embodied in, among other things, a current control assembly that includes an electrical current flow path having a maximum current flow rate, a first current limiter in the electrical current flow path, the first current limiter comprising circuitry configured to adjustably restrict current flow along the electrical current flow path to a flow rate less than the maximum current flow rate in response to receipt of a first signal at a first input port, and a second current limiter in the electrical current flow path, the second current limiter arranged to interrupt the electrical current flow path in response to receipt of a second signal at a second input port.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: November 20, 2018
    Assignee: Woodward, Inc.
    Inventors: David L. Ried, Dustin Kramer, Dan Gotko, Charles M. Brunswig, Greg Opper
  • Controlling an electrically-driven actuator
    Patent number: 9461577
    Abstract: In some aspects, an actuation system includes an electrical positioning driver and an electrically-driven actuator. A voltage boost converter in the electrical positioning driver receives an input voltage. The voltage boost converter passes the input voltage to a voltage bus in the electrical positioning driver. The voltage on the voltage bus is converted to an actuator power signal that controls the electrically-driven actuator. The voltage boost converter boosts the voltage on the voltage bus to control a mechanical output performance of the electrically-driven actuator.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: October 4, 2016
    Assignee: Woodward, Inc.
    Inventor: David L. Ried
  • CONTROLLING AN ELECTRICALLY-DRIVEN ACTUATOR
    Publication number: 20160087569
    Abstract: In some aspects, an actuation system includes an electrical positioning driver and an electrically-driven actuator. A voltage boost converter in the electrical positioning driver receives an input voltage. The voltage boost converter passes the input voltage to a voltage bus in the electrical positioning driver. The voltage on the voltage bus is converted to an actuator power signal that controls the electrically-driven actuator. The voltage boost converter boosts the voltage on the voltage bus to control a mechanical output performance of the electrically-driven actuator.
    Type: Application
    Filed: December 1, 2015
    Publication date: March 24, 2016
    Inventor: David L. Ried
  • Controlling an electrically-driven actuator
    Patent number: 9225284
    Abstract: In some aspects, an actuation system includes an electrical positioning driver and an electrically-driven actuator. A voltage boost converter in the electrical positioning driver receives an input voltage. The voltage boost converter passes the input voltage to a voltage bus in the electrical positioning driver. The voltage on the voltage bus is converted to an actuator power signal that controls the electrically-driven actuator. The voltage boost converter boosts the voltage on the voltage bus to control a mechanical output performance of the electrically-driven actuator.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: December 29, 2015
    Assignee: Woodward, Inc.
    Inventor: David L. Ried
  • Integrated Soft Start and Safety Shutdown
    Publication number: 20150171625
    Abstract: The subject matter of this specification can be embodied in, among other things, a current control assembly that includes an electrical current flow path having a maximum current flow rate, a first current limiter in the electrical current flow path, the first current limiter comprising circuitry configured to adjustably restrict current flow along the electrical current flow path to a flow rate less than the maximum current flow rate in response to receipt of a first signal at a first input port, and a second current limiter in the electrical current flow path, the second current limiter arranged to interrupt the electrical current flow path in response to receipt of a second signal at a second input port.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 18, 2015
    Applicant: Woodward, Inc.
    Inventors: David L. Ried, Dustin Kramer, Dan Gotko, Charles M. Brunswig, Greg Opper
  • CONTROLLING AN ELECTRICALLY-DRIVEN ACTUATOR
    Publication number: 20150042255
    Abstract: In some aspects, an actuation system includes an electrical positioning driver and an electrically-driven actuator. A voltage boost converter in the electrical positioning driver receives an input voltage. The voltage boost converter passes the input voltage to a voltage bus in the electrical positioning driver. The voltage on the voltage bus is converted to an actuator power signal that controls the electrically-driven actuator. The voltage boost converter boosts the voltage on the voltage bus to control a mechanical output performance of the electrically-driven actuator.
    Type: Application
    Filed: August 9, 2013
    Publication date: February 12, 2015
    Applicant: Woodward, Inc
    Inventor: David L Ried