Patents by Inventor Leonard E. Harrison

Leonard E. Harrison 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).

  • Grain bin sweep auger with torque arm
    Patent number: 4008816
    Abstract: A grain storage bin has a floor with a central discharge opening, an elongated sweep auger extending radially from the discharge opening toward the wall of the bin, and an elongated shield extending alongside the auger. The sweep auger and shield travel as a unit around the interior of the bin to channel grain toward the discharge opening as the auger is being rotated about its axis. An elongated torque arm attached in a fixed position alongside the shield provides torsional reinforcing for the shield and longitudinal reinforcing for preventing the auger and shield from sagging mid-span.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: February 22, 1977
    Assignee: Royal Industries, Inc.
    Inventor: Leonard E. Harrison