Patents by Inventor Shawn E. Nowlin

Shawn E. Nowlin 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).

  • Expandable tool with enhanced expansion capability
    Patent number: 7730941
    Abstract: An expandable downhole tool features a mandrel that is expanded from within by a swage or other technique. The expansion of the mandrel advances an exterior ring or comparable slidably mounted object against an exterior sleeve that can be impervious or porous. The ring engages a ratchet mechanism to hold its position with respect to the mandrel as the swage advances through the mandrel and expands the ring and the exterior sleeve. The locking of the ring to the mandrel keeps the exterior sleeve from springing back longitudinally as the expansion is concluded.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: June 8, 2010
    Assignee: Baker Hughes Incorporated
    Inventors: John R. Abarca, Shawn E. Nowlin, Dorothy L. Nowlin, legal representative