CONTROLLABLE RIGID MONOFLIPPER Russian patent published in 2002 - IPC

FIELD: swimmer's equipment. SUBSTANCE: monoflipper has paired rubber, fin, rod, and fin position control unit. Rod is attached with its upper end to shin by belts. Fin position control unit has shin lever rigidly connected to rod and through pivot hinge to foot lever rigidly joined with rubber, fin lever rigidly joined to fin and through pivot hinge to one of said shin or foot lever, and through control unit to one of said foot or shin lever, and stop for restricting relative mutual movements of levers. Monoflipper allows swimmer's facilities to be widened by increasing swimmer's force within the whole range of speeds and swimmer's range of negative speeds to be increased. EFFECT: simplified construction and increased efficiency. 2 cl, 6 dwg