Patents by Inventor Steven R. Queen

Steven R. Queen 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).

  • Grade propulsion system and method
    Patent number: 9206562
    Abstract: A grade propulsion system provided herein includes: a propel pump; a brake system; an operator control configured to receive and transmit a propel command and a Hill Mode activation; and a controller electronically coupled to the propel pump, the brake system, and the operator control, the controller configured, after activation of the Hill Mode and the propel command, to transmit a propel current to the propel pump and disengage the brake system when the propel current is equal to or greater than a cracking current plus an offset current.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: December 8, 2015
    Assignee: Caterpillar Paving Products Inc.
    Inventors: Toby A. Frelich, Kea V. Chin, Steven R. Queen
  • GRADE PROPULSION SYSTEM AND METHOD
    Publication number: 20130238210
    Abstract: A grade propulsion system provided herein includes: a propel pump; a brake system; an operator control configured to receive and transmit a propel command and a Hill Mode activation; and a controller electronically coupled to the propel pump, the brake system, and the operator control, the controller configured, after activation of the Hill Mode and the propel command, to transmit a propel current to the propel pump and disengage the brake system when the propel current is equal to or greater than a cracking current plus an offset current.
    Type: Application
    Filed: March 4, 2013
    Publication date: September 12, 2013
    Applicant: Caterpillar Paving Products Inc.
    Inventors: Toby A. Frelich, Kea V. Chin, Steven R. Queen