Sailing rig
Patent 4474126 Issued on October 2, 1984. Estimated Expiration Date: 
September 20, 2002. 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.
September 20, 2002. 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 ReferencesInventorApplicationNo. 06/420134 filed on 09/20/1982US Classes:114/39.11, METHOD OF SAILING SAILPOWERED WATERCRAFT114/102.3, Spinnaker114/90, Masts and masting114/98PivotedExaminersPrimary: Blix, Trygve M.Assistant: Young, Patrick W. Attorney, Agent or FirmInternational ClassesB63H 9/06 (20060101)B63H 9/00 (20060101) B63B 15/00 (20060101) AbstractA sailing rig for use on a sailboat comprising a sail formed in the shape of two approximately ellipsoidal portions with a free-standing mast being rotatable on its vertical axis, the mast being curved near its top from the vertical axis of rotation of the mast so that the sail, when the sailboat is close-hauled, folds around the mast and when the sailboat runs before the wind, the sail unfolds and opens to fly free of the mast. | |
