Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Foot attached
Patent
1994-02-25
1995-05-23
Basinger, Sherman
Buoys, rafts, and aquatic devices
Swimming aid to increase stroke efficiency
Foot attached
A63B 3110
Patent
active
054175992
ABSTRACT:
This invention relates to a swim fin (10) adapted to be worn on a foot of a swimmer for the purpose of varying the effect of the swimmer's leg strokes. In one preferred embodiment of the invention a sole plate (14) having a rear portion (22) of a roughly rectangular shape and front portion (18) of a roughly trapezoid shape is provided. The sole plate (14) is larger than the swimmer's foot. The sole plate may be secured to the sole swimmer's foot. In one of the preferred embodiments, this consists of a pair of flaps (34) integral with the rear portion (22) of the sole plate (14) plus adjustment straps (42) and a heel strap (46). The sole plate has a plurality of mounting holes or slots (54), which will be clear of the foot after the sole plate (14) is securely fastened to the foot. Also provided in the preferred embodiment are sets of water channeling vanes (58). The vanes (58) may be of many different designs including straight or curved in one or two dimensions. They may be attached to the upper or lower surface of the sole plate (14) through holes or slots (54). One of the preferred embodiments further includes a fin extension (90), for attachment to the outer end (18) of the sole plate (14) and a speed pod for attachment to the center of the underside (30) of the sole plate (14). The fin of the invention (10) may be made of a material such as natural rubber, synthetic rubber, silicone polymer, polyurethane polymer, or composites of these materials. Additionally, the modular components of the invention may be provided in kit form with a template to determine module fixation, so that existing fins can be modified to receive the vanes (58) and the speed pod (98).
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