Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Foot attached
Patent
1988-04-11
1990-07-31
Basinger, Sherman D.
Buoys, rafts, and aquatic devices
Swimming aid to increase stroke efficiency
Foot attached
441 61, A63C 3110
Patent
active
049447033
ABSTRACT:
A swim fin includes a foot receptacle for attaching to a swimmer or diver's foot. A pair of parallel beam supports are secured to the foot and toe portion of the foot receptacle and support a plurality of hydrofoil blades therebetween in a pivotal attachment. Limits are provided to restrict the pivotal motion of the hydrofoil blades to provide an optimum angle of attack for the hydrofoil blades during the swimming stroke.
REFERENCES:
patent: 3081467 (1963-03-01), Ciccotelli
patent: 3665535 (1972-05-01), Picken
patent: 3952351 (1976-04-01), Gisbert
patent: 4178128 (1979-12-01), Gongwer
Basinger Sherman D.
Ekstrand Roy A.
Swinehart Edwin L.
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