Patents by Inventor Joshua Fossum

Joshua Fossum 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 speed control for locomotives
    Patent number: 9517772
    Abstract: A drivetrain system for a machine includes an engine, a brake, and a controller operatively coupled to the engine and the brake. The controller is configured to generate a first speed error based on a first speed command signal and a first ground speed signal; generate a first engine speed command signal based on the first speed error; send the first engine speed command signal to the engine; compare the first speed error to an upper threshold; set a brake command signal to an engagement value when a magnitude of the first speed error is greater than a magnitude of the upper threshold; engage the brake in response to setting the brake command signal to the engagement value; and increase a speed of the engine in response to the first engine speed command signal while the brake command signal is set to the engagement value.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: December 13, 2016
    Assignee: Caterpillar Inc.
    Inventors: Khanh Ngo, Cody Ryerson, Joshua Fossum
  • Electronic Speed Control for Locomotives
    Publication number: 20160347315
    Abstract: A drivetrain system for a machine includes an engine, a brake, and a controller operatively coupled to the engine and the brake. The controller is configured to generate a first speed error based on a first speed command signal and a first ground speed signal; generate a first engine speed command signal based on the first speed error; send the first engine speed command signal to the engine; compare the first speed error to an upper threshold; set a brake command signal to an engagement value when a magnitude of the first speed error is greater than a magnitude of the upper threshold; engage the brake in response to setting the brake command signal to the engagement value; and increase a speed of the engine in response to the first engine speed command signal while the brake command signal is set to the engagement value.
    Type: Application
    Filed: May 27, 2015
    Publication date: December 1, 2016
    Applicant: Caterpillar Inc.
    Inventors: Khanh Ngo, Cody Ryerson, Joshua Fossum