Patents by Inventor James F. Rappolt

James F. Rappolt 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).

  • Container with interlocking corners
    Patent number: 4189088
    Abstract: A panel locking means is provided for securing together two or more corrugated paperboard panels in face-to-face contact. For this purpose, the panels to be secured together are provided with notches which have a narrow entry portion along the edge of a panel and taper outwardly to a wider base portion interiorly of the panel, and locking tabs which have a relatively narrow hinge portion interiorly of a panel and taper outwardly to a wider end portion along the edge of the panel.
    Type: Grant
    Filed: October 5, 1978
    Date of Patent: February 19, 1980
    Assignee: Westvaco Corporation
    Inventors: James F. Rappolt, Edward L. Osborne