Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Foot attached
Patent
1989-02-01
1991-01-01
Basinger, Sherman
Buoys, rafts, and aquatic devices
Swimming aid to increase stroke efficiency
Foot attached
441 63, 441 64, A63B 3111
Patent
active
049814540
ABSTRACT:
Improved swimming efficiency and safety in a water environment is achieved with the use of retractable swim fins having a web-like member rotatably interconnected to a shoe-like member. Latching means secure the web-like member to the shoe-like member in a downward swimming position. Releasing means permit the web-like member to rotate to an upward walking position. Pressure from a swimmer's foot returns and latches the web-like member to the downward position.
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patent: 4689029 (1987-08-01), Ciccotelli
patent: 4752259 (1988-06-01), Tackett
Basinger Sherman
Marzocco Ralph L.
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