CYCLE-FIN Russian patent published in 2023 - IPC A63B31/00 A63B33/00 

FIELD: sports equipment.

SUBSTANCE: cycle-fin includes a support tube, on one side into which a handle is installed with the possibility of adjusting its length. On the other hand, a fork-bracket is attached to the support pipe, including at its end a lever pivotally fixed on the axis, containing two lugs pivotally interacting with the connecting rod of the drive mechanism, as well as an attachment unit to which the fin is attached. The drive mechanism is installed in the symmetrical holes of the fork-bracket and includes two cranks fixed in the corresponding bushings on the inside of the fork-bracket, moreover, these cranks have holes for their hinged attachment to the connecting rod, which is configured to transmit translational motion to the lever under the action of the rotation of the cranks and, accordingly, on the fin. In this case, the cranks are driven by pedal connecting rods by means of pedals hinged to them.

EFFECT: increased efficiency of swimming, reduced energy expended on movement of the swimmer, ease of use.

9 cl, 4 dwg