Patents by Inventor Trevor W. North

Trevor W. North 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).

  • Method and apparatus for applying paste to battery grids
    Patent number: 4307758
    Abstract: A method and apparatus for applying paste to battery grids wherein the paste is circulated in a primary circuit incorporating an open reservoir wherein the paste is relieved of all pumping pressure and portion of the paste is diverted from the primary circuit into a secondary circuit for delivery to a nozzle which may be selectively opened and closed to deliver paste to the grid, the secondary circuit also incorporates the open reservoir.
    Type: Grant
    Filed: November 6, 1979
    Date of Patent: December 29, 1981
    Assignee: Dunlop Australia Limited
    Inventors: William L. McDowall, Alan K. Maplesden, Trevor W. North, Erich Kaufmann