Patents by Inventor Donald W. Engle

Donald W. Engle 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: 4548350
    Abstract: A carton divider of the type having interlocked partitions of identical construction, each of which has a slot extending inwardly from one edge at an angle thereto and curving back to provide a tab projecting laterally from a hinging line, and a second opening spacer beyond the slot to receive the tab of the companion partition, both openings affording aligned spaced hinging edges on the line; the slot also having a third edge inwardly of the tab, spaced out of alignment with the two hinging edges, and one end of the tab has a slit extending transversely to the tab, and the second opening also has a slit extending toward the slot parallel to, but spaced from, the hinging edges and the crest of the tab slopes inwardly toward the hinging edge.
    Type: Grant
    Filed: May 16, 1984
    Date of Patent: October 22, 1985
    Assignee: Rock-Tenn Company
    Inventors: Donald W. Engle, Roger S. Hahn
  • Patent number: 3942837
    Abstract: A divider for use in a container, such as a corrugated cardboard box, has a network of intersecting partitions and reinforced folded structures at the ends of the partitions. The reinforcing structures are folded to the main body of the partitions, forming areas of increased thickness which increase the compressive strength of the divider and a container having the divider included therein. The partitions are slotted and interlocked together by use of the slots. The slots have relieved areas at the entrance to the slots and an interlocking protrusion. The opposite edges of the partitions from the slots have relieved areas. The relieved areas at the slot entrances facilitate entry of the strips into the slots and interlocking of the strips together.
    Type: Grant
    Filed: January 2, 1975
    Date of Patent: March 9, 1976
    Assignee: Clevepak Corporation
    Inventor: Donald W. Engle