| 摘要 |
Retractable swim fins that attach to the legs of a swimmer to aid movement through the water In one example embodiment, a retractable swim fin includes an upper support frame, a lower support frame, and a sliding assembly connecting the upper support frame to the lower support frame. The upper support frame is configured to be attached to the front of a swimmer's lower leg. The lower support frame includes means for aquatic propulsion and is configured to extend, in a swimming position, to a position covering the majority of the dorsum of the swimmer's foot. The lower support frame is also configured to retract, in a walking position, to a position that does not interfere with the dorsum of the swimmer's foot. The walking position enables the swimmer to walk barefoot on a surface without the lower support frame substantially contacting the surface. |
