Variable-beam catamaran
Patent 5277142 Issued on January 11, 1994. Estimated Expiration Date: 
November 1, 2011. 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.
November 1, 2011. 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 2347959 2678018 3593684 Float connection assemblies for multi-hulled boats Catamaran with extensible hulls Multihull vessels Catamaran sailboat Multi-hull steering system Collapsible trimaran boat Self-righting multihull boat InventorApplicationNo. 786900 filed on 11/01/1991US Classes:114/61.16, Connecting means is pivotable arm114/283Having laterally disposed skids or pontoonsExaminersPrimary: Oberleitner, Robert J.Assistant: Bartz, Clifford T. Attorney, Agent or FirmForeign Patent References
International ClassB63B 001/00AbstractAn improved twin hull vessel of the catamaran type, having a central bridgedeck and a pair of side hulls interconnected by lateral suspension arms. The suspension arms are pivotally connected with offset spaced connections to the bridgedeck and to each of the hulls for moving said hulls from a substantially horizontally locked position to a vertical position beneath the bridgedeck, while holding the hulls in the vertical orientation relative to the water surface, thus changing the vessel from a catamaran to a single hull vessel for moving the vessel into pier locations, or for trailering the vessel.Other References
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