Patents by Inventor Roger B. Streeter

Roger B. Streeter 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).

  • Multi-hull vessel adapted for ice-breaking
    Patent number: 7712424
    Abstract: A multi-hulled vessel for upward ice-breaking is disclosed. The vessel has side hulls that are at least partially submerged while the vessel is underway. The side hulls each have a ridge on their upper surface. To break through ice at sea, the side hulls are positioned under the ice and the trim is adjusted for an upward trim angle. As the vessel moves forward, the ice is lifted and force concentrates along the ridge on the side hulls. The ice breaks along this force concentration, aided by the weight of the ice itself.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: May 11, 2010
    Assignee: Lockheed Martin Corporation
    Inventors: Lewis D. Madden, Stephen L. Bailey, Roger B. Streeter