SWIMMING FIN (OPTIONS) Russian patent published in 2023 - IPC A63B31/11 

FIELD: swimming equipment.

SUBSTANCE: invention relates to devices for swimming, underwater movement, and muscle training; it can be used in a structure of a fin put on a foot. A swimming fin (options) contains means 1 for attaching to a swimmer’s foot and blade 2 connected to it, including bracket 5 and at least two water-flowing blades 7, 8. Blades 7, 8 are pivotally installed on bracket 5 from both sides of it, with the possibility of rotation relatively to longitudinal axis 9 of bracket 5 in both sides. Bracket 5 is connected to means 1 for attaching to a swimmer’s foot, using pivot 27, to provide a possibility of turning relatively to means 1 for attaching to a swimmer’s foot during fin swing. In another option, bracket 5 is made elastically deformable and is connected to means 1 for attaching to a swimmer’s foot, using pivot 27, to provide a possibility of turning relatively to means 1 for attaching to a swimmer’s foot during fin swing. Means 1 for attaching to a swimmer’s foot is equipped with sole enhancer 26, to which bracket 5 is connected. Pivot 27 is equipped with return spring 30.

EFFECT: increase in the efficiency of a fin.

10 cl, 15 dwg