Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Foot attached
Patent
1997-11-07
1999-05-04
Basinger, Sherman
Buoys, rafts, and aquatic devices
Swimming aid to increase stroke efficiency
Foot attached
A63C 3111
Patent
active
058997814
ABSTRACT:
A pair of swim fins, each fin comprising a blade having a first planar surface and defined by an elongated front edge terminated by inner and outer corners and a rear portion, the front edge and rear portion held in spaced-apart arrangement by a pair of opposed side edges extending therebetween; the rear portion of the blade having formed therein the bottom portion of a foot pocket arranged about a second planar surface for partial insertion therein of the foot of the wearer and including an open heel portion and heel strap to retain foot in the pocket; wherein the bottom portion of the foot pocket is specifically outlined for each foot, including one slightly longer side thereof bordering the inside of the foot and another slightly shorter side, spaced-apart therefrom, bordering the outside of the foot; and, wherein the second planar surface of the pocket is inclined to the outside of the first planar surface of the blade to compensate for the natural pronation of the foot in the fin when the fins are used in undulating movement so as to improve the efficiency of the fins during use.
REFERENCES:
patent: 2729832 (1956-01-01), Schmitz
patent: 3810269 (1974-05-01), Tabata et al.
patent: 4923419 (1990-05-01), McCarthy
patent: 5266062 (1993-11-01), Runckel
patent: 5356323 (1994-10-01), Evans
Basinger Sherman
Murphey John J.
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