Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Foot attached
Patent
1998-02-10
2000-04-18
Sotelo, Jesus D.
Buoys, rafts, and aquatic devices
Swimming aid to increase stroke efficiency
Foot attached
A63B 3108
Patent
active
06050868&
ABSTRACT:
A hydrofoil and swim fin is provided for increasing lift and decreasing drag. In a preferred embodiment, the hydrofoil has a swept back leading edge and is oriented at a reduced angle of attack substantially transverse to the direction of movement of the hydrofoil. Structural reinforcement may be used to inhibit hydrofoil deformation during use, and a recess may be incorporated into the hydrofoil to direct fluid flow with respect to the hydrofoil surface. Torsional stress that acts on the hydrofoil when in use is also addressed.
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