Watercraft with at least two twin hulls
Patent 4603648 Issued on August 5, 1986. Estimated Expiration Date: 
May 8, 2004. 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.
May 8, 2004. 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 1408868 2893339 2944505 3045263 3142282 3195494 3438349 3802371 Sailing system Steering apparatus for boats with multiple rudders Patent #: 4444145 InventorApplicationNo. 06/608232 filed on 05/08/1984US Classes:114/39.27, With connecting means as three-dimensional frame with vertically spaced apex (e.g., tetrahedral frame, etc.)114/144R, STEERING MECHANISM114/90Masts and mastingExaminersPrimary: Blix, Trygve M.Assistant: Swinehart, Edwin L. Attorney, Agent or FirmInternational ClassesB63H 9/06 (20060101)B63H 9/00 (20060101) B63B 1/00 (20060101) B63B 1/12 (20060101) B63B 15/00 (20060101) Foreign Application Priority Data1983-05-09 FRAbstractThe invention relates to a catamaran-type sail boat comprising several inclined mast-like elements rotatively mounted at their lower ends and upper ends respectively by appropriate lower connecting mechanism and upper connecting mechanism, the masts being provided over at least a portion of their length with a fin rigidly connected to the masts, the fin working as a sail. Angular rotation positioning mechanism is provided to rotate the rotatable masts provided with the fin so that the boat can be driven at will. | |
