Patents by Inventor Nathan T. Kemmerly

Nathan T. Kemmerly 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).

  • Crane moment load and load delivery system control and method
    Patent number: 8272521
    Abstract: The present invention is a crane operating system and method which monitors the crane moment load in order to keep the crane within the safe operating envelope. In determining the current crane moment load the system considers boom raising cylinder pressure, boom angle, chassis incline, as well as hydraulic pressure.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: September 25, 2012
    Assignee: Auto Crane Company
    Inventors: Nathan T. Kemmerly, Michael J. Lawson, Mark K. Torbett, Mark A. Smith
  • Side loader for curbside refuse container
    Patent number: 5505576
    Abstract: A side loader for picking up curbside refuse containers includes a hydraulic telescopic boom located adjacent a top open refuse compartment of a vehicle. The boom is adapted for inward/outward movement transverse to the forward/rearward axis of the vehicle. A mast is connected via a hydraulic powered helical rotary actuator for pivotal movement of its lower end inward and outward. A similar rotary actuator is used to operate the grabber arm assembly.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: April 9, 1996
    Assignee: Crane Carrier Company
    Inventors: Raymond C. Sizemore, Nathan T. Kemmerly, David A. Schmigle