Patents by Inventor Stuart A. Schaefer

Stuart A. Schaefer 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).

  • Patent number: 7004305
    Abstract: A grain bin sweep is adapted to be assembled within a grain bin. The sweep comprises an auger assembly including a shield and an auger; and a tractor frame assembly comprising a frame first part and a frame second part. The sweep components are sized to fit through a small access opening to a grain bin and to then be assembled together within the grain bin. Additionally, the assembly of the grain bin sweep is accomplished using simple hand tools, such as wrenches, screwdrivers, etc. No welding, drilling or other fabrication is required to assemble the parts or components together to form the sweep.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: February 28, 2006
    Assignee: The GSI Group, Inc.
    Inventor: Stuart A. Schaefer