Patents by Inventor Lonnie Hewell

Lonnie Hewell 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).

  • Liner wear detection
    Publication number: 20050275216
    Abstract: Methods and apparatus for detecting wear in a liner. In one embodiment of the present invention, an electrically conductive wire is placed on or near the outside surface of the liner and the electrical resistance in the electrically conductive wire is measured to determine whether the wire has worn through. In another embodiment of the present invention, the temperature measured by a temperature measuring device, such as a thermocouple, is monitored over time to estimate wear in the liner.
    Type: Application
    Filed: August 19, 2005
    Publication date: December 15, 2005
    Inventors: Robert Martin, Joe Maker, Lonnie Hewell
  • Liner wear detection
    Publication number: 20050069016
    Abstract: Methods and apparatus for detecting wear in a liner. In one embodiment of the present invention, an electrically conductive wire is placed on or near the outside surface of the liner and the electrical resistance in the electrically conductive wire is measured to determine whether the wire has worn through. In another embodiment of the present invention, the temperature measured by a temperature measuring device, such as a thermocouple, is monitored over time to estimate wear in the liner.
    Type: Application
    Filed: September 25, 2003
    Publication date: March 31, 2005
    Inventors: Robert Martin, Joe Maker, Lonnie Hewell