Roll-reefing jib sail
Patent 4248281 Issued on February 3, 1981. Estimated Expiration Date: 
June 18, 1999. 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.
June 18, 1999. 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 3611969 3800729 3851609 Sail-raising system Jib sail system 4030439 InventorAssigneeApplicationNo. 06/049422 filed on 06/18/1979US Classes:114/106RollingExaminersPrimary: Basinger, Sherman D.Attorney, Agent or FirmInternational ClassesB63H 9/00 (20060101)B63H 9/10 (20060101) AbstractIn the roll-reefing job sail system disclosed herein, a luff foil, grooved to receive a bead on the luff edge of a jib, is employed to roll up the main portion of a jib sail. The head and tack, however, are not fixedly attached to the luff foil but, rather, are connected to attachment points which are journaled and freely rotatable with respect to the luff foil. Thus, both can freely lag in rotation relative to the central portion of the jib which wraps around the luff foil. | |
