Fins

Abstract

A fin includes a foot pocket and a web extended directly from the front end of the foot pocket, and a web flipper of the fin includes at least one pair of resistance reducing devices having at least one pair of window holes disposed on the web flipper; and a pair of vanes separately and pivotally coupled onto a side of the window hole by its plate and capable of swinging up and sown on a side of the window hole, and the web flipper is divided into left and right hard plates, and a soft material at the middle integrate the two hard plates as a whole.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an accessory for swimming or diving, and more particularly to fins to be worn onto the ankles of a human body, and a web flipper of the fins includes a device that can reduce the water resistance of the web flipper and provides a nimble water gliding effect. [0003] 2. Description of the Related Art [0004] In general, swimmers and divers wear fins on their ankles of both feet to improve the speed and distance of their swimming or diving and achieve the effect of being not exhausted easily. However, the prior art fins as shown in FIG. 6 only includes a foot pocket 1 having a web 2 extended directly from the front end of the foot pocket 1, and a web flipper 20 is purely a piece of flat hard board without installing any device or structure that can assist swimmers or divers to swim forward nimbly and save their physical strength during swimming or diving. Therefore, fins users usually co...

AI Technical Summary

Benefits of technology

[0008] If a swimmer or diver wears the fins on the ankles and kick the legs in water, the vane will automatically shut the window hole to receive a larger force from the web flipper and strengthen the forward propelling force and speed up the swimming or diving. If the swimmer or diver resumes the upper swung legs to their positions, the vane will automatically open the window hole to allow water to flow through, so as to reduce the water resistance and save the strength of the swinging legs and make the swimming or diving easier and save physical strength, and thus such arrangement can extend the time of the swimming or diving sports.

[0009] To achieve the secondary objective of the present invention, the web flipper of a fin is divided into two left and right hard boards and a soft material at the middle integrates the two hard boards, so that when a swimmer or diver wears the fins at the ankles and kicks the legs in water, then the two hard boards constitute a different curve which makes the web like a fishtail to provide a nimble control effect, and users can swim like a fish by wearing the fins for the swimming or diving sports.

Problems solved by technology

Therefore, fins users usually complain about the fins for the shortcomings of wasting much physical strength and being not nimble enough.

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