Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Foot attached
Patent
1984-11-19
1986-07-08
Blix, Trygve M.
Buoys, rafts, and aquatic devices
Swimming aid to increase stroke efficiency
Foot attached
441 61, 441 62, 441 63, A63C 3110
Patent
active
045990719
ABSTRACT:
The improvement provided by this invention is directed at the conventional beach-shoe and diving flipper, and according to this invention, a novel beach-shoe capable of acting as a diving flipper is provided. The web portion is extensible relative to a shoe body, the shoe can be used as a beach-shoe when a web member is received in a recess of the shoe body, and a guarding piece is placed in a cut-out made in the front end of the shoe body to admit the web member to pass through. The shoe body comprises a platform including peripheral walls, the opposite side portions of the peripheral walls are formed with inside guiding grooves, the front portion and rear portion are respectively formed with a cut-out, the two cut-outs have identical shape which corresponds to the shape of a guard piece, so that a guard piece can be placed in alternative cut-out, when placed in the cut-out of the front portion, the web member can be restricted in the recess, and it should be removed therefrom to place in the cut-out of the rear portion when the web member is desired to be pulled into a stretched position.
REFERENCES:
patent: 1688498 (1928-10-01), Jacobsen
patent: 2980926 (1961-04-01), Wolshin
patent: 3068499 (1962-12-01), Biskupsky
patent: 3178738 (1965-04-01), Trell
patent: 4178128 (1979-12-01), Gongiver
Bartz C. T.
Blix Trygve M.
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