Patents by Inventor David K. Johnsen

David K. Johnsen 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: 7117996
    Abstract: An adjustable apparatus for sizing objects, mainly delicate foods, by the rotation of a set of at least 7 rollers, each roller having one less tooth so that the rollers move at progressively higher revolutions per minute, from the in-feed shear roller of 144 revolutions per minute to the discharge roller of 210 revolutions per minute. The rollers are shaped and finished by 7 to 12 flats, alternated with a crown in between each flat, cut the horizontal length of the roller. The rollers are then sandblasted over the entire circumference of the surface to a depth range of 280 to 300 micro-inches.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: October 10, 2006
    Assignee: Key Technology Inc.
    Inventors: John Mobley, David K. Johnsen, Scott Benjamin