Patents by Inventor John Van Kammen

John Van Kammen 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: 5393136
    Abstract: A suspension folder filing system includes a drawer having a width dimensioned for one size of suspension folder and a pair of elongated file suspension rails or supports. The suspension rails each include a downwardly opening channel having a base and spaced, generally parallel sidewalls adapted to receive and grip elongated sides of the drawer. Each rail includes first and second, laterally spaced, vertically extending file suspension ribs. The supports may be reversibly positioned on the sides of the drawer. When in a first position, the first ribs are positioned to receive the suspension hooks or rods of one size suspension folder. When in a reversed, second position, the second ribs are positioned with respect to each other on the drawer to receive a second, smaller size suspension folder. One or more side-to-side rails are mountable between the elongated suspension rails.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: February 28, 1995
    Assignee: Steelcase Inc.
    Inventors: Daniel Grabowski, John Van Kammen