Patents by Inventor Craig R. Peterson

Craig R. Peterson 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).

  • Hopper ram for shredder
    Patent number: 4844363
    Abstract: A shredder having a hopper for funneling material to the cutting blades of the shredder is provided with a ram assist within the hopper to push material into the cutting blades. The ram is shielded from the material passing through the hopper by an intermediate partial wall extending from the infeed of the hopper to the mid portion of the hopper. In its retracted position the ram is positioned behind the partial wall out of the stream of material passing through the hopper. In its extended position the ram is proximate the outfeed of the hopper within the flow of material. A ram controller senses the load upon the cutting blades of the shredder and selectively activates and deactivates the ram.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: July 4, 1989
    Assignee: Shredding Systems, Inc.
    Inventors: Thomas J. Garnier, Craig R. Peterson