High stability trimaran
Patent 4392444 Issued on July 12, 1983. Estimated Expiration Date: 
January 6, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 6, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3610190 3626883 3820489 Float connection assemblies for multi-hulled boats Trimarans Surface craft Folding outrigger releasable brace for trimaran Patent #: 4172426 InventorApplicationNo. 06/222877 filed on 01/06/1981US Classes:114/39.28, With connecting means permitting relative movement between hulls114/126Fins and boardsExaminersPrimary: Blix, Trygve M.Assistant: Sotelo, Jesus D. Attorney, Agent or FirmInternational ClassesB63B 43/00 (20060101)B63B 43/02 (20060101) B63B 1/14 (20060101) B63B 1/00 (20060101) B63B 15/00 (20060101) B63B 15/02 (20060101) Foreign Application Priority Data1980-01-10 SEAbstractA trimaran which includes a main hull, starboard hull, and port hull, has positive stability for up to about 130° inclination of the main hull. The starboard and port hulls are pivotally mounted to the main hull, and the mast is mounted to the main hull for pivotal movement about an axis generally parallel to the axes about which the starboard and port hulls are pivotal. Shrouds attach the mast to the starboard and port hulls, and springs may operatively connect the shrouds to the starboard and port hulls, respectively, so that the effective lengths thereof are variable. Springs, and stops, are connected between the main hull and the starboard and port hulls, respectively, to prevent pivotal movement relative to each other unless the wind exceeds a predetermined value. | |
