Patents by Inventor Dennis V. Worthington

Dennis V. Worthington 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).

  • Medicament vial end cap membrane piercing device
    Patent number: 4969883
    Abstract: A spear-like device for puncturing the membrane or diaphragm stopper of a liquid medicament vial. The spear-like device includes a fluid supply port from which liquid can be delivered to a hooded needle.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: November 13, 1990
    Inventors: Michael D. Gilbert, Lonnie R. Mabley, Dennis V. Worthington
  • Inventory control board
    Patent number: 4868991
    Abstract: A control apparatus insures precise reading or entry of data in the proper columns and rows or lines of chart sheets mounted atop a board. The same columns with appropriate indicia appear on both the top of the chart sheets and on a vertically shiftable ruler member attached to the board. A slide block associated with the ruler member not only maintains the ruler in a positive horizontal disposition parallel to the chart sheet rows but automatically adjusts in height to accommodate a varied amount of chart sheets on the board.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: September 26, 1989
    Inventors: Michael D. Gilbert, Dennis V. Worthington, Lonnie R. Marbley