Patents by Inventor Larry Nelson Fisher

Larry Nelson Fisher 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).

  • Use of inert gas in transfer of comminuted product to tank
    Patent number: 6079461
    Abstract: A method and apparatus for transferring comminuted product from an unpressurized storage unit to a tank, especially a trailer-mounted tank. According to this method, an inert gas source is provided, preferably mounted on the trailer, and a conduit is provided to carry the product, which conduit is connected between the storage unit and the tank. The tank and conduit are evacuated so as to create a pressure differential between the storage unit and the tank, and the inert gas is allowed to flow into the evacuated tank in response to the partial vacuum therein. The product is then allowed to flow through the conduit to the tank in response to the partial vacuum therein. An improved trailer for receiving comminuted product according to a practice of the method is also disclosed.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: June 27, 2000
    Assignee: The Heil Co.
    Inventors: Larry Nelson Fisher, Warren Peery Groseclose