Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Foot attached
Patent
1998-07-10
1999-03-09
Sotelo, Jesus D.
Buoys, rafts, and aquatic devices
Swimming aid to increase stroke efficiency
Foot attached
D21236, A63B 3111
Patent
active
058792120
ABSTRACT:
A swim fin includes a blade having a web for providing a propulsion thrust in a water environment and an opposing plate having a shoe rotatably attached. The shoe is rotatable about an axis of rotation perpendicular to the blade for a rotation of the shoe from a swimming position, wherein the web extends radially outward from the toe, to a walking position, wherein the web extends radially outward from the heel. The toe of the shoe interlocks within a transverse extending flange of the web while in the swimming position. The toe includes a tongue extending radially outward for engaging the flange in a tongue in groove interlocking manner when in the swimming position. Further, a tab extends from the toe and into a notch for indexing the shoe in the swimming position. A shaft extends outward from the sole of the shoe and through the blade where it is secured to a washer for securing the shoe to the blade. The bottom side of the blade includes a recess for receiving the washer therein and providing a smooth bottom surface of the swim fin.
REFERENCES:
patent: 2903719 (1959-09-01), Wozencraft
patent: 3178738 (1965-04-01), Trell
patent: 3268927 (1966-08-01), Markowitz
patent: 3521312 (1970-07-01), Ganev
patent: 4752259 (1988-06-01), Tackett et al.
patent: 4981454 (1991-01-01), Klein
patent: 5041039 (1991-08-01), Chang
patent: 5292272 (1994-03-01), Grim
patent: 5421758 (1995-06-01), Watson et al.
patent: 5447457 (1995-09-01), Kamitani
patent: 5527196 (1996-06-01), Harkin
patent: 5527197 (1996-06-01), Evans
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