Twin-axis and head for sports equipment

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.

Description

[0001]This application is a Divisional of and claims the priority benefit under 35 U.S.C. §120 of U.S. patent application Ser. No. 12 / 327,219, filed on Dec. 3, 2008, which is hereby incorporated in its entirety by reference. This application also 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 tra...

AI Technical Summary

Benefits of technology

"The patent text describes a new type of sports equipment that can better support the face of a club head and reduce the curve of a ball when it is hit. This is achieved by designing the equipment with two axes that align with the main shaft and the center of gravity of the club head. This reduces the torque on the shaft and eliminates the loss of force caused by the rotation of the head. The new equipment also includes a punched hole or dimple in the head, which further improves its performance. The patent text also mentions that the new equipment can be used in various sports, such as golf, hockey, and badminton, and can provide a better feel for the player. Overall, the patent text provides a solution for improving the accuracy and force transfer of sports equipment."

Problems solved by technology

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.

As described above, with a conventional golf club, it is difficult to control the directionality of the golf ball when striking the ball, and particularly difficult to control a rightward slice, thereby hindering the improvement of the golf play of a beginner, etc.

In various sports, in general, torque—which is the moment of force around a rotation axis—becomes an issue when rotating an object around a fixed rotation axis.

Nevertheless, the disclosure of JP-A 1998-201884 is limited to a golf putter and cannot be used with golf clubs in general or with various sports equipment as is the case with the disclosed subject matter, and its configuration is limited to an even arrangement of the two axes on the upper surface of the putter.

Nevertheless, these descriptions are based on existing golf clubs and are not provided to solve the aforementioned problems or address the same concerns as does the disclosed subject matter.

Conventional sports equipment, such as golf clubs, for example, are provided with a distance (approximately 4 cm in the case of a golf club) between the club head center of gravity that strikes the golf ball and the shaft, resulting in an impact in the range of tons on a section not in line with this axis.

As a result, the club head rotates and, at the moment of impact of the club, stick, or racket on the ball, puck, shuttlecock, or the like, the head unavoidably bends rightward due to the great force, sometimes causing the struck ball, such as the golf ball, to curve, i.e., slice.

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