Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Leg attached
A63B 3111, A63B 3114
A swimming propulsion aid for attachment to the feet of a swimmer. The assembled swimming aid for each foot includes a foot wing strapped to the foot of the swimmer so as to extend from the inner edge of the foot laterally under the foot sole and outwardly therefrom to provide an enlarged and effective thrust area for pushing action with respect to surrounding water during the leg extension portion of a reciprocating leg stroke by the swimmer. The foot wing may be constructed of a generally rectangular frame member over which is stretched a flexible sheet of fabric or plastic material or constructed of a generally rectangular frame member across which are aligned a multiplicity of parallel louvers pivotal to a closed position during the leg extension portion of the reciprocating leg stroke by the swimmer. Where the foot wing includes a frame member and flexible sheet material the wing is provided with wing pivots aligned with the inside of the swimmer's foot whereby during the leg retraction portion of the reciprocating leg stroke the foot wing swings inwardly into near longitudinal alignment with the leg and inner foot edge. Where the foot wing includes a frame member and pivotal louvers, the louvers pivot to an open position during the retraction portion of the reciprocating leg stroke. Through use of the swimming propulsion aids of the invention the swimmer is more effectively and forcefully propelled through the water.
patent: 1237392 (1917-08-01), Schneider
patent: 1341290 (1920-05-01), Webster
patent: 1841904 (1932-01-01), McGowan
patent: 4316300 (1982-02-01), Lewis
Basinger Sherman D.
Junkins Philip D.
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