Wind powered propulsion device
Patent 4634136 Issued on January 6, 1987. Estimated Expiration Date: 
October 30, 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.
October 30, 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 947731 2018062 3381647 3836176 Bicycle sail Mainsail furling mast assembly and mast construction therefor Sail and rigging for a sailing-apparatus Patent #: 4501216 InventorApplicationNo. 06/666296 filed on 10/30/1984US Classes:280/213, Sail attachments280/810Wind sail for propelling or braking skier or skaterExaminersPrimary: Love, John J.Assistant: Dukes, Mark C. Attorney, Agent or FirmInternational ClassesB63H 9/06 (20060101)B63H 9/00 (20060101) B62B 15/00 (20060101) AbstractA wind powered propulsion device has a sail mount and harness means for retaining the sail mount on the back of a person. A sail is mounted on the sail mount. Preferably the harness means includes a backpack-like device having a back rest and strap for fitting over the shoulders and around the waist of a person. The mount may include a mast for holding the sail in a generally vertical position and a swinging arm. The sail is mounted at a first end of the swinging arm which is pivotal at a second end about an axis through the sail mount.Field of SearchSail attachments | |
