Flipper

US20150335955A1Inactive Publication Date: 2015-11-26QBAS CO LTD
3 Cites 5 Cited by

Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
QBAS CO LTD
Publication Date
2015-11-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

A flipper is provided. The flipper includes a pocket, a blade and a strengthening structure. The pocket is for accommodating the foot of the user. The blade extends forwards from the pocket, and the strengthening structure is detachably disposed at the blade and extends to reach the front edge of the blade. The flexural strength of the strengthening structure is larger than that of the blade to constrain the swing angle of the blade relative to the pocket. By using the strengthening structure to constrain the swing angle of the blade, the flipper can not only provide a larger propulsion in the down-kicking state, but also decrease the resistance of water in the up-kicking state.
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Description

CROSS-REFERENCES TO RELATED APPLICATIONS

[0001] This application claims priority to Taiwan Patent Application No. 103118014 filed on May 23 2014, which is hereby incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention provides a flipper, and more particularly, to a flipper that is strengthened in structure.

[0004] 2. Descriptions of the Related Art

[0005] Flippers are commonly used in water sports. Flippers are used to increase the force receiving area when the user paddles the water especially in water diving. However, different muscle strengths can influence the force and endurance during paddling. For example, when leg muscles are in a down-kicking state, the muscles can provide a relatively large force with good endurance, so the main propulsion during water diving is provided by the water paddling action in the down-kicking state. To perform the down-kicking water paddling action repeatedly, the diver must...

Claims

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