Patents by Inventor Jim W. Langford

Jim W. Langford 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).

  • MAGNETIC EARTH BIT SEAL
    Publication number: 20080179103
    Abstract: An earth bit seal includes a magnetic ring that determines how strongly the earth bit seal engages a lug and/or cone of an earth bit. The earth bit seal also includes a flexible ring positioned away from any dynamic sealing surfaces that engage the lug or cone. The flexible ring is positioned away from the dynamic sealing surfaces so that, if it becomes impregnated with debris, it will not act as an abrasive ring that undesirably removes material from them, or from the lug and cone.
    Type: Application
    Filed: December 7, 2007
    Publication date: July 31, 2008
    Inventors: Jim W. Langford, Gregory W. Peterson