Patents by Inventor John K. Quirk

John K. Quirk 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).

  • Oilwell spill containment
    Patent number: 5484024
    Abstract: An expandable and contractible covering is over the polished rod and the polished rod liner from above the polished rod liner clamp to below the stuffing box. This covering protects the environment in the event of failure of the liner or stuffing box. The covering may be quickly released from a basin below the stuffing box and contracted upward to service the stuffing box. The basin is connected to a special fitting between the stuffing box and pumping tee.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: January 16, 1996
    Inventors: Douglas Ladd, John K. Quirk