Patents by Inventor Terry J. Donovan

Terry J. Donovan 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).

  • Zipper slider insertion through split track
    Patent number: 5431760
    Abstract: In a continuous bag-making process, the film and zipper track moves intermittently through a bag machine in a continuous stream, so there is no end to the zipper track on which the slider can be inserted. In the present invention, in the intermittent motion-part of the bag machine, the zipper is cut apart at the location that is to be the edge of the bag, the ends formed by the cutter moved laterally relative to each other exposing the ends and the slider is inserted over one of the exposed ends.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: July 11, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Terry J. Donovan