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US20080188146 Drive for a pedal powered kayak  
A pedal powered boat having a drive assembly including an eccentric idler provides adjustment or tension for a chain used as part of the drive assembly to power the boat. A crankshaft assembly and...
US20160176481 Water bike  
A water bike has a frame supported on first and second spaced apart pontoons or similar floatation elements. Pedals are attached to cranks on a front sprocket rotatably supported on the frame. A...
US20150314848 Linear Propulsion System For Small Watercraft  
A foot-operated propulsion system for small watercraft, such as kayaks. The propulsion system includes a pedal assembly that controls motion of a fluke fin that is submerged beneath the waters...
Matches 1 - 3 out of 3