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Water Poles and paddles with Pivotal Blades

[Category : - Fitness- Boating- Swimming]
[Viewed 1502 times]

An oar or paddle for moving forward and backward any kind of vessel through the water comprising two parallel lattices fixed at a given distance from each other and a frame moving between lattices. The frame has a multitude of parallel grooves of circular cross-section which pivotally support a multitude of plates. The plates are located axially of the grooves by the portion of the plates disposed within the groove. The grooves have a peripheral extent which permits the plates to rotate. The frame is connected with vessel

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