Patents by Inventor Nolan W. Cuppen

Nolan W. Cuppen 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: 5964286
    Abstract: A tubing rotator and hanger is used in a wellhead of an oil well. The rotator has a rotator body including a flange and a sleeve projecting from the bottom end of the flange. The flange engages between the wellhead flange and the upper wellhead components, adding a very short height to the overall height of the wellhead. A mandrel extends through a bore in the rotator body and is supported in the body by a bearing supporting a load shoulder on the mandrel. A ring gear is keyed to the mandrel and is driven by a worm extending into a bore in the rotator body flange. In preferred embodiments, the load shoulder and ring gear can be removed from the mandrel, allowing the rotator body to be lifted off the mandrel and a BOP installed when necessary.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: October 12, 1999
    Assignee: Rotating Production Systems (Canada) Inc.
    Inventor: Nolan W. Cuppen