An apparatus for adjusting a human propelled watercraft having a pair of flexible fins extending into the water. The invention allows the user to easily adjust the propulsion device to match the user's leg length. The invention consists of a push button mechanism that converts a vertical motion into a horizontal motion allowing a locking pin to retract and the propulsion device to be adjusted. Once an adjustment position is selected, the user releases the button and a spring reverses the motion of the pin, locking the mechanism into position.
ARC crank
26.06.2018
Patent
Elektronische Ressource
Englisch
Crank, manufacturing method of crank and mold for crank injection molding
Europäisches Patentamt | 2022
|