The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 2010
Filed:
Mar. 30, 2006
Lewis D. Madden, Morgan Hill, CA (US);
Stephen L. Bailey, Los Gatos, CA (US);
Roger B. Streeter, Benicia, CA (US);
Lewis D. Madden, Morgan Hill, CA (US);
Stephen L. Bailey, Los Gatos, CA (US);
Roger B. Streeter, Benicia, CA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
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.