Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Hand attached – held – or worn
Patent
1993-10-22
1994-09-20
Basinger, Sherman
Buoys, rafts, and aquatic devices
Swimming aid to increase stroke efficiency
Hand attached, held, or worn
440 15, 440101, 441 61, A63B 3110
Patent
active
053485033
ABSTRACT:
A swimming aid includes a paddle with two blades for alternating arm strokes and a vertical blade attached to both feet for side to side leg motion in cooperation with the arm strokes. The two paddle blades are at opposite ends of a hand held shaft. Each blade has a rigid leading edge and a flexible following portion. When pushed forward, the blade lies in a plane for minimal hydrodynamic resistance. When pulled backward on a power stroke, the following portion bends out of the plane, creating increased hydrodynamic resistance for enhanced forward propulsion. This pulling action causes the legs to move laterally, alternating from side to side as the arm strokes alternate. A vertical blade has a narrow anterior portion with foot pockets for both feet side by side. The blade is widest at its trailing edge which may be forked and acts like a fish tail fin forcing the body forward. The propulsion is provided by the torso muscles moving the legs side to side not by leg muscles kicking as in swim fins.
REFERENCES:
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patent: 4541810 (1985-09-01), Wenzel
patent: 4781637 (1988-11-01), Caires
patent: 4820216 (1989-04-01), Masters
patent: 4832631 (1989-05-01), Gag
patent: 4857024 (1989-08-01), Evans
patent: 5114371 (1992-05-01), Alonzo
Basinger Sherman
Blum Alvin S.
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