Fin for oscillating foil propulsion system
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United States of America Patent
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-
Jan 10, 2017
Grant Date -
Dec 17, 2009
app pub date -
Aug 17, 2009
filing date -
Aug 8, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A watercraft having propulsion means extending below the water line comprising a pair of flexible fins each adapted to oscillate through an arcuate path in a generally transverse direction across the central longitudinal dimension of the watercraft. As input force is applied, the fins twist to form an angle of attack for providing forward thrust while moving in both directions along the arcurate path. Each of the fine have a generally squared off top and preferably an outer area of harder rubber than the inner area. Each of the fins can be adjusted at the trailing edge to provide adjustable tensioning of the trailing edge.
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Cited Art Landscape
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