JP2003159355A - Golf club of improved structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain both high impact characteristics and appropriate determination of mechanical strength. <P>SOLUTION: A golf club is equipped with a head made up of a body into which a generally L-shaped insert is incorporated. The insert has an upper arm of the L projecting from the body to constitute a fastening element for a cane. The body is advantageously made of silver, and the insert is made of titanium. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club provided with a head having an innovative structure. [0002] In the manufacture of golf clubs, features such as head elasticity, hysteresis, and mechanical strength are of paramount importance. [0003] The head is usually made of steel or a similar alloy. Unfortunately,
Impact properties (such as hysteresis) are substantially incompatible with other mechanical properties such as mechanical strength. It is a general object of the present invention to obviate the aforementioned disadvantages by providing a golf club having a head having high impact characteristics (such as large and optimal hysteresis) while exhibiting adequate mechanical strength characteristics. Purpose. In view of this object, according to the present invention, there is provided a cane and a head, and the head is generally formed of a body having an L-shaped insert incorporated therein, and the insert is formed between the cane and the head. Golf clubs have been devised that have an L upper arm that protrudes from the body to form an intervening securing member. Furthermore, it has been found according to the invention that the production of bodies of silver material is particularly advantageous. BRIEF DESCRIPTION OF THE DRAWINGS To better illustrate the innovative principles of the present invention and the advantages it offers over the known art, the following examples, with the aid of the accompanying drawings, illustrate possible embodiments of applying these principles. It will be described by way of example. Referring to the drawings, a golf club made in accordance with the present invention and having a cane 11 and a head 12 is shown and generally designated 10. The head is a body 1 with a generally L-shaped insert 14 incorporated therein.
3 The insert 14 is provided with the body 1 of the head so as to form a fixing member between the cane and the head.
3 has an upper arm 15 protruding from L; For this purpose, the arm 15 advantageously terminates in a connecting socket 16. The insert 14 is made of a material having a higher mechanical strength than the material forming the body. Conversely, the body is made of a high hysteresis material. [0010] Particularly surprisingly, the use of silver for body making has been found to be particularly advantageous. The insert is then incorporated into the silver head casting. Instead, advantageous mechanical properties have been found in the use of titanium for insert fabrication. [0011] Thus, a club has been created that has acquired the characteristics of accuracy and flight distance considered to be exceptional by skilled players. As can be seen from FIG. 1, the insert is:
It is advantageous to have an L-shaped foot which is curved downwards and both ends 17 are formed higher than the center. This, together with the selected material, achieves a mass concentration and a low moment of inertia for the impact energy. When the head body is (line III-II in FIG. 1)
It is further advantageous that it is made symmetrical with respect to the transverse central plane (corresponding to I). In this way, by simply turning the insert in the mold (as shown by the dashed line example in FIG. 1), a right-handed or left-handed head can be obtained with the same head casting mold. As schematically shown in FIG. 1, the cane is connected to the insert (on the side facing the head) in such a way that it has an extension generally through the center of impact, indicated at 20. To protect the silver surface from repeated impacts with the ball, a thin (1-2 mm) elliptical plate of a hard material such as steel, as shown at 21 in FIG. Advantageously, it is inserted and provided in. In an improved embodiment, the head comprises:
A housing 18 is provided near the end for receiving the balance weight 19. As can be seen from the drawing, these weights (of a convenient mass of material) are made up of a plurality of circles which are axially pierced and secured together (for example by screws) in a removable manner inside the housing. Can be made in the form of a board. If necessary,
The removal capability can stop or prevent (by known systems not shown) after arranging the appropriate amount of weight. It is apparent that by providing a club having high impact and mechanical properties that would be considered highly satisfactory by those skilled in the art, the intended purpose was achieved at this point. It is apparent that the foregoing description of embodiments which apply the innovative principles of the present invention is provided by way of example, and should not be considered as limiting the scope of the claims herein. For example, the exact configuration of the head can vary depending on the particular technology and aesthetic requirements and the desired club type. FIG. 4 shows a second embodiment of the club according to the present invention. This club, generally designated 110,
Body 11 incorporating insert 14 as described above
3 having a head 112, the upper arm 15 of said insert terminating in a locking socket 16 for connection with a cane 111. As in the previous embodiment, the insert has a central lower portion shaped (eg, curved) partially surrounding a central axis 20 of the impact area at a distance without touching it. It is advantageous to have. In the embodiment of FIG. 4, a body 113 (also made of a high hysteresis material such as silver) comprises a housing 118, which is embodied by a hole formed in the bottom of the head. Therefore, no discontinuous portion is formed on the side surface of the head. Advantageously, each hole is threaded and a replaceable balance weight 119 provided with a corresponding screw is screwed therein. The weights can also be made in one or more disk-like forms secured by threaded plugs 130 closing the housing, as shown in dashed lines in the right-handed housing 18. The head of the plug or threaded weight is provided with suitable gripping means (eg two small holes or grooves) so that it can be loosened or tightened with a suitable tool. The embodiments of the present invention are as follows. 1. And a body (13, 1) with a generally L-shaped insert (14) incorporated therein.
13) A golf club formed in 13), wherein said insert has an upper arm (15) of L projecting from the body to form a securing member between the cane and the body. 2. Insert (14) is attached to body (1
Embodiment 1 characterized in that it is made of a material having a higher mechanical resistance than the material forming (3, 113).
Club charged to. 3. The club of claim 1, wherein the body (13, 113) is made of a silver material. 4. The club of claim 1, wherein the insert (14) is made of a titanium material. [5] The club of claim 1 wherein the insert (14) has L legs formed with both ends (17) curved downward and having a height greater than the center. 6. The club of claim 1, wherein the head body (13, 113) is made symmetrically about a transverse center plane. 7. The club of claim 1, wherein the body (13, 113) has a housing (18, 118) near the end for receiving the balance weight (19, 119). 8. Claim 1 wherein the weight in the housing is formed by a plurality of disks that are axially pierced, packed inside the housing and secured thereto in a removable manner. club. 9. The club of claim 1, wherein the extension of the cane axis passes through the center of impact (20) of the head. 10. Plate material of hard material such as steel (21)
Is inserted into the impact area of the head. 11. The club of claim 7, wherein the housing (118) is made with an opening in the bottom of the body (113). 12. The club of claim 7, wherein the housing (118) is in the form of a threaded hole in the balance weight (119). 13. The club of claim 12, wherein the balance weight (119) is a threaded weight screwed into a threaded hole. 14. The club of claim 12, wherein the threading of the weight is obtained by a threaded plug (130) closing the housing. 15. The club of claim 1, wherein the insert (14) has a central lower portion shaped to partially surround the central axis (20) of the impact area of the head at a distance.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a rear view of a head portion of a golf club according to the present invention. FIG. 2 is a drawing taken along line II-II of FIG. 1; FIG. 3 is a drawing taken along line III-III of FIG. 1; FIG. 4 is a view similar to FIG. 1 of a second embodiment to which the principle of the present invention is applied. [Description of Signs] 10 Golf club 11 Cane 12 Head 13 Body 14 Insert 15 Upper arm

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Claims (1)

Claims: 1. A cane (11, 111) and a head (1).
2, 112), and the head has a body (13, 1, 1) having an overall L-shaped insert (14) incorporated therein.
13) The golf club formed in 13), wherein said insert has an upper arm (15) of L projecting from the body so as to form a securing member between the cane and the body.