Patents by Inventor Robert B. Sorenson

Robert B. Sorenson 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).

  • Replaceable bit nozzle
    Patent number: 4603750
    Abstract: A drilling fluid nozzle for an earth boring bit is formed entirely of tungsten carbide, having hard-ground threads on its exterior for securing in the bit passage. The nozzle has an upwardly facing shoulder located below the threads which sealingly engages a downwardly facing shoulder formed in the bit passage. An O-ring seal is located above the threads.
    Type: Grant
    Filed: October 2, 1984
    Date of Patent: August 5, 1986
    Assignee: Hughes Tool Company - USA
    Inventor: Robert B. Sorenson