Patents by Inventor Howard C. Petrell

Howard C. Petrell 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).

  • Clamshell packaging machine and method
    Patent number: 5479760
    Abstract: A wrap suspended in air by creating a cushion of air above and below the wrap is inserted into an envelope, formed by a clear plastic cover and the body of a clamshell, by propelling the wrap and the cushion of air into the envelope. The clear plastic cover is initially moved away from the body of the clamshell to enlarge the envelope opening so the wrap can be inserted. Video cassettes or other articles may be located within the clamshell by a conveyor system substantially contemporaneously with the insertion of the wrap.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: January 2, 1996
    Inventor: Howard C. Petrell