Swim fin

Details Swim fin Swim fin

1988-10-31

1990-06-19

Basinger, Sherman D.

Buoys, rafts, and aquatic devices

Swimming aid to increase stroke efficiency

Foot attached

440 15, A63B 3108

Patent

active

049349716

ABSTRACT:
A swim fin includes a shoe assembly for attachment to the individual feet of the user, an outwardly projecting rigid support frame, a pivoted web, and a strap or band for yieldably limiting the extent of pivotal movement of the web relative to the supporting frame about a transverse pivotal axis. The web has a plan configuration that includes a substantially straight transverse trailing edge and a leading edge in the shape of a swept-back ellipse. Longitudinal sections across the web have proportional sectional configurations and a constant maximum thickness to length ratio between the upper and lower web surfaces.

REFERENCES:
patent: 183045 (1876-10-01), Dunlop
patent: D193455 (1962-08-01), Lassonde
patent: 802306 (1905-05-01), McKittrick
patent: 1062587 (1913-05-01), Goersch
patent: 2729832 (1956-01-01), Schmitz
patent: 3521312 (1970-07-01), Ganev
patent: 3665535 (1972-05-01), Picken
patent: 4209866 (1980-07-01), Loeffler
patent: 4541810 (1985-09-01), Wenzel
patent: 4657515 (1987-04-01), Ciccotelli
patent: 4689029 (1987-08-01), Ciccotelli
patent: 4781637 (1988-11-01), Caires

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