Twin-axis and head for sports equipment

a sports equipment and twin-axis technology, applied in the field of sports equipment, can solve the problems of affecting the improvement of the golf play of a beginner, the golf ball or the like never being struck with exact directionality and speed, and the difficulty of controlling the directionality of the golf ball, so as to reduce the torque, prevent the reduction of the moment of force, and eliminate the effect of force loss

US20090143164A1Inactive Publication Date: 2009-06-04GREEN LIFE
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Publication Date
2009-06-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

This disclosed subject matter provides twin-axis sports equipment wherein a structure connecting a main shaft and a striking portion comprises two axes. The sports equipment can be a golf club, a hockey stick, an ice hockey stick, a tennis racket, a badminton racket, or the like. The striking portion can be configured as the striking portion of a golf club driver, wood, iron or putter, and can include a golf club driver, wood, iron, or putter having a punched hole or a dimple. A void can be formed in the striking portion, from a toe side and a heel side of the striking portion, which further connects with a main shaft.
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Description

[0001] This application claims the priority benefit under 35 U.S.C. §119 of Japanese Patent Application No. 2007-312356, filed on Dec. 3, 2007, which is hereby incorporated in its entirety by reference.BACKGROUND

[0002] 1. Field

[0003] The disclosed subject matter relates to various sports equipment, such as a golf club driver, wood, iron, and putter, hockey and ice hockey sticks, a tennis racket, a badminton racket, and the like, and particularly relates to twin-axis sports equipment and heads for these types of sports equipment.

[0004] 2. Description of the Related Art

[0005] In the past, various types of sports equipment have comprised many aspects that depend on the skill of the user. For example, particularly for a beginner, etc., the swing of a golf club and the transfer of the moment of force are difficult, resulting in the golf ball or the like never being struck with exact directionality and speed.

[0006] This is also related to the so-called third law of sports (the law of action-rea...

Examples

Embodiment Construction

[0047]The following describes exemplary embodiments of the disclosed subject matter in detail with reference to FIG. 1 to FIG. 4 and FIG. 6.

[0048]While the embodiments described below are specific examples of the disclosed subject matter and therefore are provided with various technical features, it should be noted that the scope of the disclosed subject matter is not limited to these embodiments.

[0049]FIG. 1 shows the configuration of an embodiment of a golf club made in accordance with principles of the presently disclosed subject matter.

[0050]In FIG. 1, a golf club 10 is a golf club wood 11 comprising a striking portion 13 that includes a face 12, a shaft axis 14 and an auxiliary shaft axis 15 that connect this striking portion 13, a main shaft axis 16, a grip 17, and a shaft axis joining portion X.

[0051]The shaft axis 14 is connected to the face 12 of the striking portion 13 at one end, and continuously connected to the main shaft axis 16 on the other end. The auxiliary shaft ax...