Patents by Inventor Daryl A. Wilfong

Daryl A. Wilfong 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: 4820375
    Abstract: A rod feeding and placement mechanism for use in apparatus for making hanging file folders comprises a magazine wherein a plurality of flat, elongated, metal rods are vertically stacked, one above another. A pair of laterally spaced-apart, horizontally disposed, slightly convergent, contra-rotating de-stacking screws located below the magazine engage the lowermost rod in the stack and advance or feed it laterally along a rod-path. Another pair of laterally spaced-apart, horizontally disposed contra-rotating top screws above the de-stacking screws then receive the rod from the de-stacking screws and advance or feed it further along the rod-path to an at-rest position located above a flat paperboard blank. Guide rails and magnetic strips support the rod as it advances along the rod-path. The rod is releasably maintained for a moment in the at-rest position by permanent magnets.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: April 11, 1989
    Assignee: Condes Corporation
    Inventors: Robert A. Memmel, Jr., Daryl A. Wilfong, George A. Collins