Patents by Inventor Robert Benjamin Durand

Robert Benjamin Durand 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).

  • Automatic drum rotation control concrete transit mixer truck
    Patent number: 7722243
    Abstract: A concrete transit mixer truck includes a control system that automatically controls rotation of the mixer drum at a constant drum speed when the mixer truck is traveling. When sensed speed of the truck exceeds a threshold, the control system automatically causes a hydraulic system to rotate the drum at a constant speed, regardless of the truck engine speed.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: May 25, 2010
    Assignee: Schwing America, Inc.
    Inventors: Charles P. Schumacher, Alexander Krasny, Heinz Ulrich Worthmann, Robert Benjamin Durand, Carl Phillip Quist
  • Automatic drum rotation control concrete transit mixer truck
    Publication number: 20080144424
    Abstract: A concrete transit mixer truck includes a control system that automatically controls rotation of the mixer drum at a constant drum speed when the mixer truck is traveling. When sensed speed of the truck exceeds a threshold, the control system automatically causes a hydraulic system to rotate the drum at a constant speed, regardless of the truck engine speed.
    Type: Application
    Filed: December 19, 2006
    Publication date: June 19, 2008
    Applicant: Schwing America, Inc.
    Inventors: Charles P. Schumacher, Alexander Krasny, Heinz Ulrich Worthmann, Robert Benjamin Durand, Carl Phillip Quist