Patents by Inventor David John Schuh

David John Schuh 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).

  • Method for detecting and controlling movement of an actuated component
    Patent number: 7469679
    Abstract: A method for detecting and controlling the position of a valve actuator is provided. The method includes applying a plurality of signals of different duration and/or magnitude to the valve actuator and measuring a signal from the valve actuator. This signal from the valve actuator is indicative of valve movement for each of the plurality of applied signals. The method further includes adjusting an injection signal to the valve actuator based at least from the measured signals from the valve actuator. This disclosure also applies this method to a solenoid actuator of a fuel injector.
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: December 30, 2008
    Assignee: Caterpillar Inc.
    Inventors: Daniel Reese Puckett, David John Schuh