Patents by Inventor James E. DeSpain

James E. DeSpain 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).

  • Patent number: 5812060
    Abstract: An automated waste cooking grease recycling tank having a top, a bottom, at least one side wall defining an inside and an outside of the tank with a plurality of openings in the tank. A liquid level sensor is inserted into the inside of the tank through one of the plurality of openings with the liquid level sensor operatively connected for sensing at least first and second different liquid levels inside of the tank. A control panel is positioned outside of the tank, operatively coupled to the level sensor and having first and second indicators thereon responsive to signal the first and second different liquid levels sensed inside of the tank. A fill pump is operatively coupled to the control panel and responsive to the control panel for adding grease.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: September 22, 1998
    Assignee: Darling International, Inc.
    Inventors: James E. DeSpain, Scot R. Garrison