ACCESSORIES FOR UNDERWATER SWIMMING, COMPRISING FIN PROPELLER AND THEIR BASIC ELEMENT - SUPPORT Russian patent published in 2017 - IPC A63B31/12 

FIELD: transportation.

SUBSTANCE: invention relates to an accessory for underwater swimming oriented at leg motion identical to its motion in the crawl stroke presented in 3 versions. The common for all of them is the fact that they comprise 1) a fin propeller, including a fin installed relative to the leg throughout shin, and a stiff support for it, with which the specified fin is connected, and 2) a stiff basic element - a base fixed on the leg in the field of the shin and foot and located relative to it by a part from its rear side, at least in the area of the shin, and by a part from the side of its foot. The feature of the first version is the fact that the support for the fin propeller is the specified base, with which it is connected in a hinged manner as capable of its fixation, besides, the hinged joint is located at the rear side of the leg, above its foot, the feature of the second version is the fact that the support for the fin propeller is the leg, and the support for the fin is the specified base, and the feature of the third version is the fact that the specified fin and base are parts of a solid accessory.

EFFECT: specified base makes it possible to both set optimal position of a fin and to transfer load from an ankle to a knee, a thigh, and to create assemblies to connect a fin propeller or a fin to it, where one arm is involved.

27 cl, 26 dwg