Patents by Inventor Gerald Johnston

Gerald Johnston 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).

  • Apparatus and method for separating recyclable materials
    Patent number: 4929342
    Abstract: An apparatus for sorting recyclable materials including an inlet conveyor with a magnetic pulleys that directs magnetic objects out of the flow of recyclable materials. A vacuum inlet is positioned adjacent a stepped region of the conveyor so as to pull lighter weight materials out of the material flow. A size sorting conveyor separates larger objects from the smaller lighter weight objects, and heavier objects such as glass are conveyed to still another collecting region.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: May 29, 1990
    Assignee: Lenco Machines & Tool Co.
    Inventor: Gerald Johnston