Patents by Inventor Stephen Kreis Phelps

Stephen Kreis Phelps 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).

  • Screed Vibration System
    Publication number: 20150337504
    Abstract: A vibration system for a paving machine having a power source and an integrated generator is provided. The vibration system may include a power converter in electrical communication with the integrated generator, a motor drive in electrical communication with the power converter, an electric motor in electrical communication with the motor drive, and a vibratory mechanism operatively coupled to the electric motor and configured to engage at least one of a screed assembly and a tamper assembly.
    Type: Application
    Filed: May 20, 2014
    Publication date: November 26, 2015
    Applicant: Caterpillar Paving Products Inc.
    Inventors: John Eron Jorgensen, Stephen Kreis Phelps, Krishnakumar Dharapuram Ramamoorthy, Jason Kopacz, Luke E. Graham, Toby Andrew Frelich