Wave powered propulsion system for watercraft
Patent 4842560 Issued on June 27, 1989. Estimated Expiration Date: 
December 28, 2007. 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.
December 28, 2007. 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 1443626 3002484 3253569 InventorApplicationNo. 07/138042 filed on 12/28/1987US Classes:440/9, WAVE POWERED PROPELLING MEANS114/61.16, Connecting means is pivotable arm440/5HYDRAULIC FLUID DRIVE FOR PROPELLING MEANSExaminersPrimary: Basinger, Sherman D.Assistant: Swinehart, Edwin L. Attorney, Agent or FirmInternational ClassesF03B 13/18 (20060101)F03B 13/00 (20060101) B63H 19/00 (20060101) B63H 19/02 (20060101) AbstractA watercraft is provided with a propulsion system having a hydraulic power plant driving a propeller through a transmission. The power to operate hydraulic pumps in the power plant is derived from wave motion by buoyant members connected to the power plant by outrigger arms. Undulation of the waves is converted to fluid pressure by the vertical movement of the buoyant members reciprocating pistons in the hydraulic pumps. Pressurized fluid is applied to a fluid motor driving the transmission. A steering assembly is operatively associated with one of the buoyant members. | |
