Patents by Inventor Jimmy M. Gilbreth

Jimmy M. Gilbreth 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).

  • Empty-full indicator for solids tanks and blenders
    Patent number: 4807672
    Abstract: A method for controlling the filling status of particulate solids in a solids container is provided using an apparatus comprising an empty/full indication device comprising a conduit structure, having a vertically opened upper end and a vertically opened lower end, wherein the vertically opened upper end is in open communication with the upper end portion of the solids container at the location of a predetermined full level and the vertically opened lower is in open communication with the lower end portion of the solids container at the location of a predetermined empty level.
    Type: Grant
    Filed: November 4, 1987
    Date of Patent: February 28, 1989
    Assignee: Phillips Petroleum Company
    Inventors: Fred T. Sherk, Jimmy M. Gilbreth