KR20170105611A - Golf clubs with hosel inserts and related methods - Google Patents

Abstract

An embodiment of a golf coupling mechanism is provided herein. Other examples and related methods are also disclosed herein.

Description

Golf clubs with hosel inserts and related methods

Cross reference to related applications

This application claims the benefit of U.S. Provisional Patent Application No. 62 / 107,240, filed January 23, 2015, and U.S. Provisional Patent Application No. 61 / 254,081, filed November 11, 2015, and is filed on May 20, 2014 U.S. Patent Application No. 14 / 282,786, filed on March 12, 2013, which is a continuation-in-part of U.S. Patent Application Serial No. 14 / 282,786, (ii) U.S. Patent Application No. 13 / 429,319, filed March 24, 2012; (iii) U.S. Patent Application No. 13 / 468,663, filed May 10, 2012; (iv) U.S. Patent Application No. 13 / 468,675, filed May 10, 2012; And (v) U.S. Patent Application No. 13 / 735,123 filed January 7, 2013.

U.S. Patent Application No. 13 / 429,319 claims benefit of U.S. Provisional Patent Application Serial No. 61 / 590,232, filed January 24, 2012, and U.S. Provisional Patent Application No. 61 / 529,880, filed August 31, U.S. Patent No. 13 / 468,663 and U.S. Patent Application No. 13 / 468,675 are each a continuation of part of U.S. Patent Application No. 13 / 429,319. Similarly, U.S. Patent Application No. 13 / 468,677 is a continuation of U.S. Patent Application No. 13 / 429,319.

U.S. Patent Application No. 13 / 735,123, entitled, U.S. Patent Application No. 13 / 468,663, filed May 10, 2012, U.S. Patent Application No. 13 / 468,675, filed May 10, 2012, This application is a continuation-in-part of U.S. Patent Application No. 13 / 468,677 filed on October 10.

  U.S. Provisional Patent Application No. 62 / 107,240, U.S. Patent Application No. 62 / 254,081, U.S. Patent Application No. 14 / 282,786, U.S. Patent Application No. 13 / 795,653, U.S. Patent Application No. 13 / 429,319, U.S. Patent Application No. 13 U.S. Patent Application No. 13 / 468,663, U.S. Patent Application No. 13 / 468,675, U.S. Patent Application No. 13 / 735,123, U.S. Patent Application No. 13 / 468,677, U.S. Provisional Patent Application Serial No. 61 / 590,232, Each of which is incorporated herein by reference in its entirety.

Technical field

The present disclosure relates generally to sports equipment, and more particularly to a golf coupling mechanism and related methods.

Many sports, such as golf, require equipment with features that can be selected or customized to suit the personality or preference of the individual. For example, the recommended type of club shaft, the type of club head, and / or the loft angle or lie angle of the club head may vary based on individual characteristics such as skill, age or height. However, once assembled, the golf club typically has a fixed and non-adjustable coupling mechanism between the golf club shaft and the golf club head. Thus, in determining appropriate equipment for an individual, an unnecessarily large number of golf clubs with such a fixed coupling mechanism must be used to test various combinations of club shaft, club head, loft angle and / or lie angle . In addition, even if an individual's personality or preference changes, golf equipment can not be adjusted to cope with such changes. The adjustable coupling mechanism may be configured to provide such flexibility in variably setting different features of a golf club, but introduces instability that causes a lack of cohesion or stress concentration in the golf club head and golf club shaft coupling can do. With this in mind, further development of golf coupling mechanisms and related methods will enhance the utility and tuning features of the golf club.

The present disclosure can be better understood by reading the following detailed description of the embodiments taken in conjunction with the accompanying drawings.
1 illustrates a front perspective view of a golf club having a golf coupling mechanism in accordance with an example of the present disclosure;
Figure 2 illustrates a top perspective view of a golf club having the golf coupling mechanism of Figure 1;
3 illustrates a cross-sectional view of a golf club head according to section line III-III of FIG. 2, showing a golf coupling mechanism having a shaft sleeve inserted into a shaft receiving portion;
Figure 4 illustrates a cross-sectional view of a golf club head and golf coupling mechanism according to section line IV-IV of Figure 2;
Figure 5 illustrates a side view of a shaft sleeve separated from a golf club head.
Figure 6 illustrates a cross-sectional view of a shaft sleeve according to section line VI-VI in Figure 5;
Figure 7 illustrates a cross-sectional view of a shaft sleeve along section line VII-VII in Figure 5;
Figure 8 illustrates a top view of the golf club head of Figure 1 with the shaft sleeve removed, showing the shaft receiving portion from above.
Fig. 9 illustrates a side cross-sectional view of the golf club head of Fig. 1 taken along line III-III of Fig. 2, with the shaft sleeve removed.
Figure 10 illustrates a side view of a portion of a sleeve coupler set of a shaft sleeve.
Fig. 11 illustrates a side x-ray view of a portion of a receiver side coupler set of shaft receivers.
Figure 12 illustrates a side view of a portion of a sleeve coupler set of a shaft sleeve similar to the shaft sleeve of Figures 1 - 7 and 10;
Fig. 12 illustrates a side x-ray view of a portion of a sleeve receptacle set of a shaft receptacle similar to the shaft receptacle of Figs. 1 - 4, 8 - 9, and 11;
Figure 14 illustrates an upper cross-sectional view of the golf coupling mechanism of the first configuration with respect to the view of section line XIV-XIV of Figure 4;
Figure 15 illustrates an upper cross-sectional view of a golf coupling mechanism of a second configuration with respect to the view of section line XIV-XIV of Figure 4;
Figure 16 illustrates an upper cross-sectional view of a golf coupling mechanism of a third configuration with respect to the view of section line XIV-XIV of Figure 4 with the shaft sleeve removed.
Figure 17 illustrates an upper cross-sectional view of a golf coupling mechanism of a fourth configuration with respect to the view of section line XIV-XIV of Figure 4 with the shaft sleeve removed.
Figure 18 illustrates a flow diagram of a method that may be used to provide, form, and / or manufacture a golf coupler mechanism in accordance with the present disclosure.
19 is a view showing stagant drag wake areas for each of the different golf club heads 1910 and 1920 for hosel.
Figure 20 is a chart of drag as a function of the open face angle to the hosel diameter of the golf club head of Figure 19;
Figure 21 illustrates a front perspective view of a golf club having a golf coupling mechanism in accordance with an embodiment.
Figure 22 illustrates a side view of a shaft sleeve of a golf coupling mechanism of a golf club head separated from the golf club head, according to the embodiment of Figure 21;
FIG. 23 illustrates a cross-sectional view of a shaft sleeve according to the embodiment of FIG. 21, taken along section line XXIII-XXIII of FIG. 22;
Figure 24 illustrates a side view of a shaft sleeve body of a shaft sleeve separated from a shaft sleeve cap of a shaft sleeve, according to the embodiment of Figure 21;
Figure 25 illustrates a side view of a shaft sleeve cap separated from a shaft sleeve body, in accordance with the embodiment of Figure 21;
Figure 26 illustrates an elevation view of a shaft sleeve cap separated from a shaft sleeve body, in accordance with the embodiment of Figure 21;
Figure 27 illustrates a flow diagram of a method according to an embodiment.
Figure 28 illustrates an exemplary step of providing a shaft sleeve according to the embodiment of Figure 27;
29 illustrates a front perspective view of a golf club head having a golf coupling mechanism, according to an embodiment.
Figure 30 illustrates a side view of a shaft sleeve of a golf coupling mechanism of a golf club head separated from the golf club head, according to the embodiment of Figure 29;
31 illustrates a cross-sectional view of a shaft sleeve according to the embodiment of FIG. 29, along section line XXXIII-XXXIII of FIG. 30. FIG.
32 illustrates a side view of a shaft sleeve body of a shaft sleeve separated from a shaft sleeve cap of a shaft sleeve, according to the embodiment of FIG. 29;
Figure 33A illustrates a side view of a shaft sleeve cap separated from the shaft sleeve body, according to the embodiment of Figure 29; FIG. 33B illustrates a top inclination of a shaft sleeve cap separated from the shaft sleeve body, in accordance with the embodiment of FIG. 29;
Figure 34 illustrates a cross-sectional view of a shaft sleeve cap according to the embodiment of Figure 29, taken along section line XLVV-XLVV of Figure 33B;
Figure 35A illustrates a top view of a shaft sleeve cap separated from the shaft sleeve body, according to the embodiment of Figure 29; Figure 35B illustrates a top view of a shaft sleeve body separate from the golf head, according to the embodiment of Figure 29;
36 illustrates a flow diagram of a method according to an embodiment.
37 illustrates an exemplary step of providing a shaft sleeve according to the embodiment of FIG.
For simplicity and clarity of illustration, the figures are shown in a generic fashion and the descriptions and details of well-known features and techniques may be omitted so as to avoid unnecessarily obscuring the present disclosure. In addition, the components are not necessarily drawn to scale in the drawings. For example, to facilitate understanding of embodiments of the present invention, dimensions of some of the elements of the drawings may be exaggerated relative to other elements. Like numbers refer to like elements throughout the various views.
The terms " first "," second ","third"," fourth ", etc. used in the specification and claims are used to distinguish between similar components, It is not intended to be an illustration. Such used terms may be replaced by other terms in the appropriate context so that the embodiments described herein may operate in a different order than, for example, shown in the figures or as described herein . It should also be understood that the terms "comprises" and "comprising" and any variations thereof are intended to indicate the meaning of non-exclusive inclusion, thereby enabling a process, method, system, article, It should be understood that the components used in the apparatus need not be limited to the components of the list, but may include other components not explicitly listed or other components unique to such process, method, system, article, It is possible.
The terms "left", "right", "front", "rear", "upper", "bottom", "upper", "lower", etc. in the description and claims are used for descriptive purposes And is not necessarily used to describe a permanent relative position. Such used terms are intended to be inclusive in a manner similar to the manner in which an embodiment of the apparatus, method and / or article of manufacture described herein is adapted to operate in a different orientation than shown, for example, It should be understood that other terms may be substituted for the environment.
The terms "coupled,"" coupled, "" coupled "," coupled, " and the like refer to a mechanical or other connection of two or more components. The coupling (which may be done mechanically or otherwise) may be for any time, e.g., permanently or semi-permanently, or only momentarily.
If there are no words "removable "," removable ", etc. in the vicinity of the word "coupled ", etc., this does not mean that the corresponding combination is not removable or removable.
When two or more components are made of the same material, as defined herein, these components are "integral ". Also, as defined herein, when two or more components are each made of a different material, these components are "non-integral ".

Some embodiments include a golf club head. The golf club head includes a golf head body, the golf club head body including a lower portion of the sole, an upper portion opposed to the sole portion, a heel portion, a toe portion opposed to the heel portion, a rear portion, Included Soul; And hosel. Further, the front portion includes a striking surface. The golf club head also includes a shaft sleeve insertable within the hosel and configured to engage the golf club shaft with the hosel. The hosel may include a hosel bore configured to receive the shaft sleeve. On the other hand, the shaft sleeve includes: (i) a shaft bore configured to receive an end of a golf club shaft, (ii) a sleeve body outer wall, and a shaft sleeve body including at least one coupler on the sleeve body outer wall, (iii) And a shaft sleeve cap configured to be coupled to the body. When the golf club head is in the address position with the shaft sleeve fixed within the hosel, the center of gravity of the shaft sleeve may be located at a vertical distance of the shaft sleeve CG of about 46 millimeters or less relative to the bottom of the soul.

In these or other embodiments, the shaft sleeve body may include an intermediate section, the shaft sleeve body may include a sleeve body wall, and the sleeve body wall may have an intermediate zone thickness of approximately 0.020 inches .

In these or other embodiments, the shaft sleeve body may include a coupler section, the shaft sleeve body may include a sleeve body wall, and the sleeve body wall may extend from the largest thickness of the sleeve body wall The maximum thickness of the sleeve body wall may be less than about 0.75 inches, and the smallest thickness of the sleeve body wall may be greater than about 0.020 inches.

In these or other embodiments, the hosel bore may include at least one receiving portion configured to engage the at least one coupler, and when the hosel bore receives the shaft sleeve, And may be engaged with at least one receiving portion to limit the rotation of the sleeve.

In these or other embodiments, the shaft sleeve may be removably coupled to the shaft sleeve body.

In these or other embodiments, the at least one coupler may include a plurality of couplers, the plurality of couplers may include a first coupler and a second coupler, and the coupler length of the first coupler may be a second May be different from the coupler length of the coupler.

In these or other embodiments, the at least one coupler may include a coupler length, and the coupler length may be greater than or equal to about 0.260 inches and less than or equal to about 0.38 inches.

In these or other embodiments, the shaft sleeve body may include a receiving groove, and the shaft sleeve may include an extrusion portion, the receiving groove being adapted to receive the extruded portion when the shaft sleeve body is engaged with the shaft sleeve cap Lt; / RTI >

In these or other embodiments, the shaft sleeve cap includes at least one slit and cap wall, and at least one slit is configured to cause the cap wall to be axially compressed.

In these or other embodiments, the shaft sleeve cap may include a cap bore and one or more ribs extending into the cap bore, wherein when the shaft bore receives an end of the golf club shaft, The club shaft can be centered within the shaft bore.

In these or other embodiments, the shaft sleeve may include a shaft sleeve mass of approximately 4.5 grams, and the shaft sleeve body may include a shaft sleeve body mass of approximately 4.1 grams or less, and / or the shaft sleeve The cap may include a shaft sleeve cap mass of about 0.3 grams or more, and about 1.0 grams or less.

In these or other embodiments, the golf club head may include a fastening configured to couple the shaft sleeve to the hosel, such that when the shaft sleeve cap is engaged with the shaft sleeve body, and the fastener secures the shaft sleeve to the hosel The golf club head may include an assembled club head mass and the assembled club head mass may be less than or equal to about 199 grams.

In these or other embodiments, the golf club head may include a fastening configured to couple the shaft sleeve to the hosel, such that when the shaft sleeve cap is engaged with the shaft sleeve body, and the fastener secures the shaft sleeve to the hosel The golf club head may include an assembled club head mass wherein the shaft sleeve may include a shaft sleeve mass and the ratio of the shaft sleeve mass to the assembled club head mass may be less than or equal to about 2.2% have.

In these or other embodiments, the golf club head may include an assembled club head mass, the shaft sleeve may include a shaft sleeve mass, and the ratio of the shaft sleeve mass to the disassembled club head mass may be approximately Can be less than 2.2%.

In these or other embodiments, the shaft sleeve CG vertical distance may be about 45.3 millimeters or more relative to the bottom of the soul.

In these or other embodiments, when the shaft sleeve body is coupled to the shaft sleeve cap, the shaft sleeve may include a shaft sleeve height, the shaft sleeve height may be greater than or equal to about 1.78 inches and less than or equal to about 1.82 inches; When the shaft sleeve body is coupled to the shaft sleeve cap, the shaft sleeve may include a shaft sleeve body height, and the shaft sleeve body height may be greater than or equal to about 1.529 inches and less than or equal to about 1.569 inches; And / or when the shaft sleeve body is coupled to the shaft sleeve cap, the shaft sleeve includes a shaft sleeve cap height, and the shaft sleeve cap height may be greater than or equal to about 0.46 inches and less than or equal to about 0.50 inches.

Another embodiment includes a golf club head. The golf club head includes a golf head body, the golf club head body including a lower portion of the sole, an upper portion opposed to the sole portion, a heel portion, a toe portion opposed to the heel portion, a rear portion, Included Soul; And hosel. Further, the front portion includes a striking surface. The golf club head also includes a shaft sleeve insertable within the hosel and configured to engage the golf club shaft with the hosel. The hosel, on the other hand, may include a hosel bore configured to receive a shaft sleeve. (I) a shaft bore configured to receive an end of the golf club shaft, (ii) a sleeve body outer wall, and a shaft sleeve body including at least one coupler on the sleeve body outer wall, (iii) a shaft sleeve And a shaft sleeve cap configured to be coupled to the body. The shaft sleeve body may further include an intermediate section and a sleeve body wall. In addition, the shaft sleeve may comprise a shaft sleeve mass of approximately 4.3 grams. In these embodiments, the shaft sleeve body may include a shaft sleeve body mass of about 3.8 grams or less. Also, the shaft sleeve cap may include a cap bore and one or more ribs extending into the cap bore, and when the shaft bore receives an end of the golf club shaft, one or more ribs may be used to center the golf club shaft in the shaft bore . In various embodiments, the shaft sleeve cap may be removably coupled to the shaft sleeve body. Also, when the golf club head is in the addressed position with the shaft sleeve secured within the hosel, the center of gravity of the shaft sleeve may be located at a shaft sleeve CG vertical distance of about 43.5 millimeters or more relative to the bottom of the sole and less than or equal to about 47 millimeters .

Other embodiments include methods. The method may include providing a shaft sleeve. On the other hand, providing the shaft sleeve may include providing a shaft sleeve body; And providing a shaft sleeve cap. The shaft sleeve may also be configured to be insertable within the hosel of the golf club head and configured to engage the golf club shaft with the hosel. Similarly, the golf club head may include a golf head body and a hosel, and the golf club head body may include a lower portion of the sole, an upper portion opposite the sole portion, a heel portion, a toe portion opposite the heel portion, As shown in FIG. The front portion may include a striking surface. The hosel may also include a hosel bore configured to receive the shaft sleeve. (I) a shaft bore configured to receive an end of the golf club shaft, (ii) a sleeve body outer wall, and a shaft sleeve body including at least one coupler on the sleeve body outer wall, (iii) a shaft sleeve And a shaft sleeve cap configured to be coupled to the body. When the golf club head is in the address position with the shaft sleeve fixed within the hosel, the center of gravity of the shaft sleeve may be located at a vertical distance of the shaft sleeve CG of about 46 millimeters or less relative to the bottom of the soul.

Other examples and embodiments are also disclosed herein. These examples and embodiments may be found in the drawings, the claims, and / or the detailed description of the invention.

Referring to the drawings, FIG. 1 is a front perspective view showing a golf club head 101 provided with a golf coupling mechanism 1000 according to an example of the present invention. FIG. 2 is an upper perspective view showing a golf club head 101 provided with a golf coupling mechanism 1000. 3 is a cross-sectional view of the golf club head 101 taken along line III-III in FIG. 2, showing the golf coupling mechanism 1000 with the shaft sleeve 1100 inserted into the shaft receiving portion 3200. FIG. to be. 4 is a cross-sectional view of the golf club head 101 and the golf coupling mechanism 1000 taken along line IV-IV in FIG.

In this embodiment, the golf coupling mechanism 1000 includes a shaft sleeve 1100 configured to engage an end of a golf club shaft, such as a golf club shaft 102 (FIG. 1). Figure 5 is a side view showing the shaft sleeve 1100 separated from the golf club head 101 (Figure 1). 6 is a cross-sectional view of the shaft sleeve 1100 taken along line VI-VI of FIG. In this example, the shaft sleeve 1100 includes a shaft bore 3120 that is configured to receive the end of the golf club shaft 102. The shaft sleeve 1100 also includes a sleeve axis 5150 that extends from the sleeve top 1191 to the sleeve lower end 3192 along the longitudinal centerline of the shaft sleeve 1100. In this example, the sleeve outer wall 3130 is a right angle cylinder configured such that at least a portion of the sleeve outer wall 3130 is substantially parallel to the sleeve axis 5150 and delimits the boundary of the shaft bore 3120 therein. In other words, the sleeve axis 5150 is the centerline of the sleeve outer wall 3130, in this embodiment. In this example, the shaft bore 3120 extends coaxially with the shaft bore axis 6150 and is angled with respect to the sleeve axis 5150, thereby being non-coaxial with the sleeve axis. In this example, shaft bore axis 6150 is at an angle of approximately 0.5 [deg.] With sleeve axis 5150, but it is also possible that this angle ranges from approximately 0.2 [deg.] To approximately 4 [deg.] Relative to sleeve axis 5150. Accordingly, in this embodiment, the shaft bore 3120 and the sleeve outer wall 3130 are not concentric. However, in other embodiments, the shaft bore axis 6150 may be substantially co-linear with the sleeve axis 5150 such that the sleeve outer wall 3130 and the shaft bore 3120 may be substantially concentric.

Shaft sleeve 1100 includes a sleeve coupler set 3110 having one or more couplers protruding from sleeve outer wall 3130. 7 is a cross-sectional view of a shaft sleeve 1100 taken along line VII-VII in FIG. 5 across a sleeve coupler set 3110. FIG. FIGS. 3-7 illustrate different sets of sleeve coupler sets 3110 that protrude from the sleeve outer wall 3130. FIG. In this example, the sleeve coupler set 3110 includes sleeve couplers 3111, 3112, 5116, and 7115 that protrude from the sleeve outer wall 3130 and extend along a circumferential portion 7191 of the sleeve outer wall 3130 to a sleeve coupler 3112 are disposed opposite the sleeve coupler 3111 and the sleeve coupler 7115 is disposed opposite the sleeve coupler 5116. As shown in Fig. 7, in this embodiment, the sleeve coupler set 3110 alternately forms concave and convex surfaces around the circumference 7191.

The sleeve coupler of the sleeve coupler set 3110 is configured to suppress rotation of the shaft sleeve 1100 relative to the golf club head 101 when the shaft sleeve 1100 is inserted and fixed in the shaft receiving portion 3200 Includes an arcuate surface. 3, 5 and 7, (a) the sleeve coupler 3111 includes an arcuate surface 3151 that is formed in a curved shape over the entire outer region of the sleeve coupler 3111, (b) the sleeve coupler 3112 includes an arcuate surface 3152 that is curved over the entire outer region of the sleeve coupler 3112; (c) the sleeve coupler 5116 includes an outer surface of the sleeve coupler 3112, (D) the sleeve coupler 7115 includes an arcuate surface 7155 that is curvilinear throughout the outer region of the sleeve coupler 7115. The sleeve coupler 7115 includes an arcuate surface < RTI ID = 0.0 > do.

The golf coupling mechanism 1000 also includes a shaft receiving portion 3200 configured to receive the shaft sleeve 1100 as shown in Figures 3 and 4. [ 8 is a plan view of the golf club head 101 showing a state in which the shaft accommodating portion 3200 is viewed from above from which the shaft sleeve 1100 is removed. 9 is a cross-sectional side view of the golf club head 101 in a state in which the shaft sleeve 1100 taken along the line III-III in FIG. 2 is removed, showing the side end surface of the shaft accommodating portion 3200.

The shaft receiving portion 3200 is formed integrally with the hosel 1015 of the club head 101 but according to the embodiment the shaft receiving portion 3200 is provided separately from the hosel 1015, Such as bolts or rivets, via a screw fastening mechanism and / or through bolts or rivets. In the same or other embodiments, the terms hosel and shaft receptacle may be used interchangeably. Also, in accordance with an embodiment, the head bore of the golf club head 101 may be provided on a crown or on top of the hosel 1015 instead. In this embodiment, the shaft receiving portion 3200 may also constitute a portion of such a head bore or may be coupled to the head bore.

The shaft sleeve 1100 is configured to be inserted into the shaft receiving portion 3200 and may be divided into several portions. For example, the shaft sleeve 1100 includes a sleeve insert 3160 that is delimited by a sleeve outer wall 3130, and when the shaft sleeve 1100 is secured within the shaft receiving portion 3200, (3200). In this example, the shaft sleeve 1100 also includes a sleeve top 3170 that is configured to be retained outside of the shaft receiving portion 3200 when the shaft sleeve 1100 is secured within the shaft receiving portion 3200. However, in other examples, a shaft sleeve, which is similar to the shaft sleeve 1100, but which is configured to be fully inserted into the shaft receiving portion 3200, is also possible, where the sleeve top 3170 may not be provided.

The shaft receiving portion 3200 includes a receiving portion inner wall 3230 configured to delimit the boundary of the sleeve inserting portion 3160 and a sleeve outer wall 3130 of the shaft sleeve 1100 inserted into the shaft receiving portion . The shaft receiving portion 3200 also includes a receiving portion coupler set 3210 configured to mate with the coupler set 3110 of the shaft sleeve 1100 to suppress rotation of the shaft sleeve 1100 relative to the shaft receiving portion 3200. [ ). 8, the receiver coupler set 3210 includes receiver couplers 3213, 3214, 8217, and 8218 that are formed into the receiver inner wall 3230, Coupler 3213 is disposed opposite to receiver side coupler 3214 and receiver side coupler 8218 is disposed opposite to receiver side coupler 8217. [

The receiver coupler of the receiver coupler set 3210 of the shaft receiver 3200 includes an arcuate surface that is complementary to the arcuate surface of the sleeve coupler set 3110 of the shaft sleeve 1100. [ For example, (a) the receiver coupler 3213 includes an arcuate surface 3253 (FIG. 8) curved over the entire interior region of the receiver coupler 3213 (FIG. 8) The arcuate surface 3253 is complementary to the arcuate surface 3151 of the sleeve coupler 3111 (Fig. 7), (b) the receiver coupler 3214 is curved in the entire interior region of the receiver coupler 3214 8), wherein the arcuate surface 3254 of the receiver coupler 3214 is complementary to the arcuate surface 3152 of the sleeve coupler 3112 (Fig. 7), (c ) Accommodating sub coupler 8217 includes an arcuate surface 8257 that is curved over the entire interior region of the accommodating sub coupler 8217 (Fig. 8), wherein the arcuate surface 8257 of the receiver coupler 8217 (Fig. 7); (d) the receiver coupler 8218 is complementary to the arcuate surface 7155 of the sleeve coupler 7115 8), wherein the arcuate surface 8258 of the receiving sub-coupler 8218 is complementary to the arcuate surface 5156 of the sleeve coupler 5116 with a complementary arcuate surface 8258 (Fig. 7).

In this embodiment, the arcuate surfaces of the sleeve coupler set 3110 and the receiver coupler set 3210 are formed in a curved shape over the respective sleeve coupler and receiver coupler. 10 is a side view showing a portion of the shaft sleeve 1100 and a sleeve coupler set 3110. FIG. 11 is an X-ray side view showing a portion of the shaft receiving portion 3200 and a receiving portion coupler set 3210. Fig. 7 and 10, in this example, the arcuate surface 5156 of the sleeve coupler 5116 has a horizontal curvature radius 7176 and the arcuate surface 3151 of the sleeve coupler 3111 is horizontal The arcuate surface 3152 of the sleeve coupler 3112 has a horizontal curvature radius 7172 and the arcuate surface 7155 of the sleeve coupler 7115 has a horizontal curvature radius 7175, Respectively. The arcuate surface of the sleeve coupler set 3110 includes a vertically tapered portion that decreases in thickness toward the sleeve lower end 3192 of the shaft sleeve 1100 and toward the sleeve axis 5150 5 and FIG. 6). 10, the arcuate surface 5156 of the sleeve coupler 5116 includes a vertically tapered portion 10186 and the arcuate surface 3151 of the sleeve coupler 3111 has a vertically tapered portion < RTI ID = 0.0 > 10181, and the arcuate surface 3152 of the sleeve coupler 3112 includes a vertical tapered portion 10182. Although not shown in FIG. 10, the arcuate surface 7155 of the sleeve coupler 7115 also includes a vertically tapered portion similar to the vertically tapered portion 10186 of the sleeve coupler 5116.

8 and 11, with respect to the receiver coupler set 3210 of the shaft receiver 3200, in this example, the arcuate surface 8258 of the receiver coupler 8218 is connected to the sleeve coupler 5116, 7 and 10), the arcuate surface 3253 of the receiver coupler 3213 has a horizontal curvature radius of the sleeve coupler 3111 and a horizontal curvature radius of the sleeve coupler 3111, 7), the arcuate surface 3254 of the receiver coupler 3214 is complementary to the horizontal curvature radius 7172 of the sleeve coupler 3112 (Fig. 7) 7), the arcuate surface 8257 of the receiver coupler 8217 has a horizontal curvature radius 8277 that is complementary to the horizontal curvature radius 7175 of the sleeve coupler 7115, (Fig. 7).

Also, in this example, the arcuate surface of the receiver couples set 3210 includes a vertically tapered portion that is complementary to a vertically tapered portion of the arcuate surface of the sleeve coupler set 3110. 11, the arcuate surface 8258 of the receiver coupler 8218 includes a vertical tapered portion 11288 complementary to a vertical tapered portion 10186 of the sleeve coupler 5116 (see, for example, 10), the arcuate surface 3253 of the receiver coupler 3213 includes a vertical tapered portion 11283 complementary to the vertical tapered portion 10181 of the sleeve coupler 3111 (Fig. 10) The arcuate surface 3254 of the coupler 3214 includes a vertical tapered portion 11284 complementary to the vertical tapered portion 10182 of the sleeve coupler 3112 (FIG. 10). Although not shown in FIG. 11, the arcuate surface 8257 of the receiver coupler 8217 is also similar to the vertical tapered portion 11288 of the receiver coupler 8218, And a vertical tapered portion which is complementary to the tapered portion.

In this embodiment, the vertically tapered portion of the arcuate surface of the sleeve coupler set 3110 is formed substantially linear so that the vertical tapered portions 10181, 10182 of the sleeve couplers 3111, 3112 shown in Fig. 10 Lt; RTI ID = 0.0 > linearly < / RTI > Similarly, as can be seen through the profiles of the vertical tapered portions 11283 and 11284 of the receiver couplers 3213 and 3214 shown in FIG. 11, the vertical taper of the arcuate surface of the receiver couples set 3210, The portion is formed substantially linearly. In the same or other example, the substantially linearly shaped, vertically tapered portion of the arcuate surface of the sleeve coupler set 3110 and receiver coupon set 3210 may be of a substantially straight or substantially infinite size It may be regarded as having a near vertical curvature radius.

However, in other embodiments, the vertical tapered portion of the sleeve coupler and / or receiver coupler does not necessarily have to be linear. 12 is a side view illustrating a portion of a shaft sleeve 12100 with a sleeve coupler set 12110. FIG. 13 is an X-ray cross-sectional view of the shaft accommodating portion 13200 viewed from the side along with the accommodation coupler set 13210. Fig.

The shaft sleeve 12100 may be similar to the shaft sleeve 1100 (see FIGS. 1-7 and 10), and the shaft receiving portion 13200 may be similar to the shaft receiving portion 3200 Figures 4, 8 and 10). However, the sleeve coupler set 12110 is different from the sleeve coupler set 3110 in that the vertical tapered portion is not linear. For example, the sleeve coupler set 12110 includes vertical tapered portions 12186, 12181, and 12182 that are formed in a curved shape, rather than a linear shape, and may have respective vertical curvature radii. Likewise, the receiver couples set 13210 includes a vertical tapered portion 13288, 13283 (not shown) that is formed in a curved shape rather than a linear shape and has a respective vertical curvature radius that is complementary to the radius of curvature of the sleeve coupler set & , 13284). Thus, the sleeve coupler of the sleeve coupler set 12110 and the receiver coupler of the receiver coupler set 13120 are each formed in a curved shape in the horizontal and vertical directions over the respective entire surface area. For example, the tangential horizontal line with respect to any point on the entire surface of the sleeve coupler 12116 is not tangential to any other point on the entire surface of the sleeve coupler 12116. In the same or other embodiments, the entire surface of each sleeve coupler of the sleeve coupler set 12110, and the entire surface of each receiver couples of the receiver couples set 13120, And is formed in a curved shape.

The different sleeve couplers and receiver couplers of the present invention may have respective radius of curvature within a predetermined range. 7 and 10, the horizontal curvature radii 7171, 7172, 7175, and 7176 of the sleeve coupler set 3110 are approximately 0.175 inches (4.45 mm), respectively, but approximately 0.1 inches (2.54 mm) to approximately 0.225 inches (5.715 mm). 8 and 11, the horizontal curvature radii 8273, 8274, 8277 and 8278 of the receiver coupler set 3210 are respectively set to the horizontal curvature radii 7171, 7172, 7175 and 7176 10). ≪ / RTI > 12 and 13, the radial curvature radii of the sleeve coupler set 12110 and the receiver coupon set 13210 may also be set to the sleeve coupler set 3110 and / or the receiver coulter set 3210 May be similar to those described above according to the embodiment of Figs. 1-11.

1 to 11, the vertical tapered portion of the sleeve coupler set 3110 (FIG. 10) and the receiver coupleser set 3210 (FIG. 11) has a near-infinite vertical curvature By having a radius, it can be formed into a substantially straight shape. 12 and 13, the vertical tapered portions of the sleeve coupler set 12110 (FIG. 12) and the receiver coupler set 13210 (FIG. 13) have a more pronounced vertical curvature radius. 12) of the vertical tapered portion 12186 of the sleeve coupler 12116 is approximately 0.8 inches (20.32 mm), but may vary from approximately 0.4 inches (10.16 mm) to 2 inches 50.8 mm). The vertical curvature radii of other similar portions of the sleeve coupler set 12110 may also be the same range as described above for the vertical tapered portion 12186. [ In addition, the vertical curvature radius (FIG. 13) of the receiver coupler set 13210 may be complementary or similar to the vertical curvature radius described for the sleeve coupler set 12110 (FIG. 12).

In some examples, the arcuate surface of the sleeve coupler and / or the receiver coupler may comprise a portion of the geometric structure. For example, the arcuate surface of the sleeve coupler 12116 (FIG. 12) may include a quadratic surface, and the arcuate surface of the receiver coupler 13218 (FIG. 13) . ≪ / RTI > In this example, the secondary curved surfaces of sleeve coupler 12116 and receiver coupler 13218 may include, for example, a portion of the parabolic surface or a portion of the hyperbolic surface. Further, in some examples, the sleeve coupler and receiver coupler with arcuate secondary curvature may include a portion of a degenerate quadric surface, such as a portion of a conical surface. This example may be similar to the example of FIGS. 10 and 11 with respect to sleeve coupler set 3110 and receiver coupler set 3200.

In the embodiment of Figures 10 and 11 and 12 and 13, the arcuate surface of the sleeve coupler of the sleeve coupler set 3110 (Figure 10) and / or the sleeve coupler set 12110 (Figure 12) The arcuate surface of the receiver couples of set 3210 (FIG. 11) and / or receiver couples set 13210 (FIG. 13) may be configured such that there is no point of inflection, as is continuously formed in a curved shape. In the same or other embodiments, such an arcuate surface may also be composed of edgeless edgings (excluding individual perimeters). For example, the entire surface area of the sleeve coupler 5116 (FIG. 10) is an edgeless form for any portion of the entire surface area within the perimeter. In addition, the entire surface area of the receiver coupler 8218 (Fig. 11) is in the form with no edge for any portion of the entire surface area within the periphery. A shape without a similar edge may also appear in both the sleeve coupler 12110 (FIG. 12) and the receiver coupler 13218 (FIG. 13). By virtue of the features as described above, the contact area can be maximized when the sleeve coupler is seated against the receiver coupler to restrain rotation of the shaft sleeve relative to the respective shaft receiving portion.

As shown in FIGS. 3-7 and 10, a sleeve coupler set 3110 protrudes from the upper section of the sleeve outer wall 3130. Similarly, as shown in Figs. 3 and 4, 8, 9, and 11, the receiver couples set 3210 is recessed into the upper section of the receiver inner wall 3230. However, in other embodiments, the sleeve coupler set 3110 and the receiver coupler set 3210 may be disposed at different locations. For example, the sleeve coupler set 3110 and the receiver coupler set 3210 may be disposed in the bottom section or middle section of the shaft sleeve 1100 and the shaft receiving section 3200, respectively, . The sleeve coupler set 3110 is concaved into the sleeve outer wall 3130 and the sleeve coupler set 3210 is configured to protrude from the housing inner wall 3230. In this embodiment, The shape of the set 3110 and the shape of the accommodation coupler set 3210 may be reversed. It should be understood that the apparatuses, methods, and articles of manufacture as described herein are not limited to the foregoing only.

3, the golf coupling mechanism 1000 also includes a fastening portion 3400 configured to secure the shaft sleeve 1100 to the shaft receiving portion 3200. As shown in FIG. In this example, the fastening portion 3400 includes a bolt configured to engage the sleeve bottom 3192 of the shaft sleeve 1100 through a passage at the bottom of the shaft receiving portion 3200. Fixed fastening portion 3400 is configured to engage sleeve bottom end 3192 via a threaded fastening mechanism. As the screw fastening mechanism is tightened, the fastening portion 3400 is configured to pull the shaft sleeve 1100 toward the lower end of the shaft receiving portion 3200, so that the arcuate surface of the sleeve coupler set 3110 is retracted Lt; RTI ID = 0.0 > 3210 < / RTI >

In the example as in this example, the combined total mass of the body of the golf club head 101, the shaft sleeve 1100, and the anchoring portion 3400 may be referred to as the assembled club head mass and the shaft sleeve 1100 And the mass of the body of the golf club head 101 without the fastening portion 3400 may be referred to as the disassembled club head mass.

In this embodiment, the fastening portion 3400 is configured to prevent or at least prevent completely removal from the shaft receiving portion 3200 when the fastening portion 3400 is disengaged from the shaft sleeve 1100, Gt; 3450 < / RTI > The retainer element 3450 includes a washer disposed within the shaft receiving portion 3200 and coupled around the threads of the fastening portion 3400. [ In this embodiment, the retainer element 3450 can be adjusted to position the retainer element along the threads of the securing portion 3400 by pushing the securing portion 3400, for example, through the retainer element 3450 And may be configured to flexibly engage the threads of the fastening portion 3400 so as to remain substantially in place once it is disposed along the threads of the fastening portion 3400. [ The retainer element 3450 can retain the end of the fastening portion 3400 in the interior of the shaft receiving portion 3200 after the shaft sleeve 1100 has been removed from the shaft receiving portion, So that the end can be inserted into the sleeve lower end 3192. In some examples, the retainer element 3450 may include a material such as a nylon material or other plastic material that is more flexible than the material of the fastening portion 3400.

In another example, a bore through which the fastening portion 3400, which is introduced into the shaft receiving portion 3200, may be formed with a thread corresponding to the thread of the fastening portion 3400, Can play a role. In this other example, the retainer element 3450 may be omitted.

The sleeve coupler set 3110 and the receiver coupler set 3210 are configured such that when the shaft sleeve 1110 is secured to the shaft receiving portion 3200 by the fastening portion 3400, most of the at least one arcuate surface Respectively. 10 and 11, most of the entire surface of at least the sleeve coupler 5116 and the entire surface of the receiving portion coupler 8218 come into contact with each other, Thereby suppressing the rotation of the shaft sleeve 1100 relative to the shaft 3200. 11 and 12, most of the entire surface of the sleeve coupler 12116 and the entire surface of the receiver coupler 13218 are also in contact with one another, . In the same or other example, the individual sleeve couplers of the sleeve coupler set 3110 (FIG. 10) or the sleeve coupler set 12110 (FIG. 12), the receiver coupler set 3210 (FIG. 11) The contact area defined by the interface between the individual receiver couplers of the sub coupler set 13210 (FIG. 13) may be from about 51% to about 95% of the overall surface of the individual receiver coupler or individual sleeve coupler have. In some embodiments, this contact area may even increase to be substantially close to or identical to the overall surface of the individual receiver coupler and / or individual sleeve coupler. Also, in some instances, the arcuate surface of the sleeve coupler of the sleeve coupler set 3110 (FIG. 10) or the sleeve coupler set 12110 (FIG. 12) is received by the receiver coupler set 3210 (FIG. 11) When they are seated against the arcuate surfaces of the receiver couplers of the first and second portions 13210 (Figure 13), a vertical force is applied to each other across the respective contact area.

In this example, when the fastening portion 3400 fixes the shaft sleeve 1100 to the shaft receiving portion 3200, the sleeve upper portion 3170 is held outside the shaft receiving portion 3200, and in this state, The lower end 3171 of the sleeve top 3170 is spaced apart from the upper end of the shaft receiving portion 3200 as the sleeve coupler set 3110 is seated against the receiving portion coupler set 3210. Such a built-in spaced apart configuration facilitates manufacturing tolerances and ensures that the sleeve coupler set 3110 can be properly seated against the receiving sub-coupler set 3210.

In the same or other example, one or more of the one or more sleeve couplers of the sleeve coupler set 3110 may protrude past the top of the shaft receiving portion 3200. Also, in some instances, one or more sleeve couplers of the sleeve coupler set 3110 may extend past the bottom of one or more receiver couples of the receiver couples set 3210. In other examples, one or more receiver couples of the receiver couples set may extend past the lower ends of one or more sleeve couplers of the sleeve coupler set 3110. Some of the features described above may also be applied to a golf coupling mechanism 1000 to facilitate manufacture within a required tolerance range while still permitting proper seating of the sleeve coupler set 3110 to the receiver couples set 3210. [ ). ≪ / RTI >

Fig. 14 is a sectional view of the golf coupling mechanism 1000 of the configuration 1400 as viewed from above in the direction of lines XIV-XIV in Fig. 3, 4 and 14, the sleeve couplers 3111, 7115, 3112, 5116 (FIG. 7) of the sleeve coupler set 3110 are shown in a cross- 8217, 3214, and 8218 (FIG. 8) of the receiver coupler set 3210. The receiver couplers 3213, 8217, 3214, and 8218 (FIG. Since shaft bore axis 6150 (FIG. 6) is not coaxial with sleeve axis 5150 of shaft sleeve 1100 as described above, shaft bore axis 6150 (FIG. 6) Between the shaft receiving portion 3200 (FIGS. 3 and 4, 8 and 9) and / or between the shaft 102 (FIG. 1) and the golf club head 101 (FIG. 1) And the first loft angle may be defined.

FIG. 15 is a sectional view of the golf coupling mechanism 1000 of the configuration 1500, viewed from the direction of the line XIV-XIV in FIG. 4, when viewed from above. In this configuration 1500, the sleeve couplers 3112, 5116, 3111, and 7115 (FIG. 7) of the sleeve coupler set 3110 are coupled to the receiver couplers 3213, 8217, 3214, 8218 (FIG. 8). Since the shaft bore axis 6150 (FIG. 6) is not coaxial with the sleeve axis 5150 of the shaft sleeve 1100 as described above, the shaft bore axis 6150 (FIG. 6) Between the shaft 102 and the shaft receiving portion 3200 (Figures 3 and 4, 8 and 9) and / or between the shaft 102 (Figure 1) and the golf club head 101 (Figure 1) And a second loft angle may be defined.

16 is a sectional view of the golf coupling mechanism 1000 of the structure 1600 as seen from above in the direction of lines XIV-XIV in Fig. The sleeve couplers 7115, 3112, 5116 and 3111 of the sleeve coupler set 3110 (Fig. 7) of the sleeve coupler set 3110 are connected to the receiver couplers 3213, 8217, 3214 and 8218 (Fig. 8). Because shaft bore axis 6150 (FIG. 6) is not coaxial with sleeve axis 5150 of shaft sleeve 1100 as described above, shaft bore axis 6150 (FIG. 6) Between the shaft receiving portion 3200 (FIGS. 3 and 4, 8 and 9) and / or between the shaft 102 (FIG. 1) and the golf club head 101 (FIG. 1) And a third loft angle may be defined.

17 is a sectional view of the golf coupling mechanism 1000 of the configuration 1700 as seen from above in the direction of lines XIV-XIV in Fig. The sleeve couplers 5116, 3111, 7115 and 3112 of the sleeve coupler set 3110 (FIG. 7) of the sleeve coupler set 3110 are connected to the receiver couplers 3213, 8217, 3214 and 8218 (Fig. 8). Since the shaft bore axis 6150 (FIG. 6) is not coaxial with the sleeve axis 5150 of the shaft sleeve 1100 as described above, the shaft bore axis 6150 (FIG. 6) Between the shaft 102 and the shaft receiving portion 3200 (Figures 3 and 4, 8 and 9) and / or between the shaft 102 (Figure 1) and the golf club head 101 And a fourth loft angle may be defined.

Depending on the angle of the shaft bore axis 6150 with respect to the sleeve axis 5150 and the sleeve coupler set 3110, alignment of different lie angles and loft angles may be achieved through the configuration shown in Figures 14-17 . 6, the bottom of the shaft bore 3120 is formed to be sharper toward the sleeve coupler 3111 by the angle between the shaft bore axis 6150 and the sleeve axis 5150. In this embodiment, Thereby tilting toward the sleeve coupler 3112 when the shaft 102 (FIG. 1) is inserted into the shaft sleeve 1100.

Thus, in configuration 1400 (Fig. 14), the first lie angle may include a smaller lie angle, and the first loft angle may include a neutral value or a medium-sized loft angle . By way of example, the first lie angle is set such that the gripping end of the shaft 102 is tilted toward the heel of the golf club head 101 (Fig. 1) at an angle of approximately 0.2 [deg.] To approximately 4 [ 1400), it is possible to reduce the lie angle of the golf club. The first loft angle having a neutral value in this example does not affect the slope of the shaft 102 in configuration 1400. [

15), the second lie angle may include a larger lie angle, and the second loft angle may be similar or equal to the first loft angle of configuration 1400 (Fig. 14) Or a neutral or loft angle of the loft, which may or may not be required. By way of example, the second lie angle is set such that the gripping end of the shaft 102 is tilted toward the toe of the golf club head 101 (Fig. 1) at an angle of approximately 0.2 [deg.] To approximately 4 [ 1500), it is possible to increase the lie angle of the golf club. The second loft angle having a neutral value in this example does not affect the slope of the shaft 102 in configuration 1500. [

In the configuration 1600 (Fig. 16), the third loft angle may include a loft angle of a smaller size, and the third lie angle may include a neutral value or a medium lie angle. By way of example, the third loft angle is set such that the gripping end of the shaft 102 is tilted toward the rear of the golf club head 101 (Fig. 1) at an angle of approximately 0.2 [deg.] To approximately 4 [ It is possible to reduce the loft angle of the golf club. The third lie angle having a neutral value in this example does not affect the slope of the shaft 102 in configuration 1600. [

17), the fourth loft angle may include a larger magnitude of the loft angle and the fourth lie angle may be similar or equal to the third lie angle of the configuration 1600 (Fig. 16) And may include a neutral value or a medium-sized lie angle. By way of example, the fourth loft angle is set such that the gripping end of the shaft 102 is tilted toward the front or impact surface of the golf club head 101 (Figure 1) at an angle of approximately 0.2 [deg.] To approximately 4 [ The loft angle of the golf club can be increased in step 1700. The fourth lie angle having a neutral value in this example does not affect the slope of the shaft 102 in the configuration 1700. [

6) in relation to the sleeve axis 5150 (FIG. 6) of the shaft sleeve 1100 in a manner that changes the angle and / or orientation of the shaft bore axis 6150 The relationship of angles may be defined. 14 to 17, the sleeve couplers 3111, 3112, 5116, and 7115 are symmetrical with respect to each other, and the receiver couplers 3213, 3214, 8217, and 8218 are also symmetrical to each other. In a different embodiment, only couplers arranged in opposite relation among the sleeve coupler and receiver couples are formed symmetrically to each other such that only two (i.e., not four) different lie angle and loft angle combinations are allowed It is possible.

According to the different features as described above with respect to the golf coupler mechanism of Figs. 1 to 17, it is also possible, in comparison with other golf club heads with an adjustable shaft coupling mechanism, It is possible to give various performance gains. For example, because the number of required components decreases and / or the receiver coupler set 3210 is disposed only toward the upper end of the shaft receiving portion 3200 (Fig. 3), the hosel diameter 1015 (Fig. 1) (1031) can be maintained at a minimum and / or can be maintained relatively unchanged with the diameter of the hosel of the corresponding regular golf club head. 8, the hosel diameter 1031 may be less than about 20 mm, for example, about 0.55 inches (about 14 mm), or about 0.53 inches (about 13.46 mm) Lt; / RTI > 9) of the shaft accommodating portion 3200 can be minimized as shown in the accommodating portion upper end 1032 of the shaft accommodating portion 3200. Further, For example, the top wall thickness 9250 may be about 0.035 inches (about 0.89 mm) or less, such as about 0.024 inches (about 0.61 mm).

8, the upper wall thickness 9250 varies in thickness along the receiving end top 1032 in this embodiment, and at least one hosel upper and lower wall narrow section 8252 at the receiving top end 1032, And one hosel wall thick section 8251. The hosel wall thick section 8251 may have a thickness of about 2.3 mm or less at the top end 1032 of the receptacle when measured in the radial direction relative to the median point of the hosel diameter 1031. The narrow section 8252 of the upper wall of the hosel may have a thickness of about 0.9 mm or less at the top 1032 of the receptacle when measured radially with respect to the median point of the hosel diameter 1031. In this example, when measured radially with respect to the midpoint of the hosel diameter 1031, the hosel wall thick section 8251 may be approximately 1.27 mm or less and the hosel wall narrow section 8252 may be 0.64 mm or less.

The aerodynamic characteristics of the golf club head 101 can be improved as a result of aerodynamic drag reduction from the hosel 1015, since the hosel diameter 1031 can be minimized as described above. 19 shows a comparison of staganted drag wake areas 1911 and 1921 for the individual hosel of the golf club heads 1910 and 1920. The hosel diameter of the golf club head 1910 is approximately 0.5 inches, The diameter of the hosel of the club head 1920 is approximately 0.62 inches. In some instances, the golf club head 1910 may be similar to the golf club head 101 (Figs. 1-4, 8, and 9). 19, a club head 1920 with a larger hosel diameter results in a wider stagnant drag wake region 1921 downstream of the hosel, thereby allowing the smaller stagant drag wake zone < RTI ID = 0.0 > 0.0 > 1911 < / RTI > FIG. 20 is a graph showing drag with respect to the hosel diameter of the golf club heads 1910 and 1920 according to an open face angle. In some instances, the golf club shaft of the club head 1910 may also be reduced in shaft thickness, e.g., the shaft thickness may be approximately 0.335 inches (approximately 8.5 mm). In the same or other example, for an open face angle of orientation of up to 50 degrees, this difference in hosel diameter results in a golf club head 1910 with a drag resistance that is smaller than a drag golf club head 1920, Lt; RTI ID = 0.0 > 0.1 lbs. ≪ / RTI > In the same or other example, the drag of the golf club head 1910 may range from about 1.2 lbs in a generally square orientation range to about 0.2 lbs in an open face orientation range of about 50 degrees.

In the same or other embodiments, the mass and / or mass ratio of the golf coupler mechanism of Figures 1 to 17 is greater than the mass and / or mass ratio of the individual golf club heads Can be minimized. For example, in the example where the golf club head 101 (Figs. 1-4, 8, and 9) includes a driver type golf club head, the different components of the club head 101 are summarized in Table 1 below And may have a mass characteristic similar to that obtained.

Exemplary Driver Head Driver head range The mass of the club head 101 (not assembled) (Approximate) ≤192 g (Approx.) 185-205 g The mass of the sleeve 1100 (Approximately)? 5.2g (Approximate) ≤ 6g The mass of the sleeve 1100 + fixed fastening portion 3400 (Approximate) ≤6.8g (Approx.) ≤ 7.5g Total mass of assembled club head (Approx.) ≤198.8g (Approximate) 188-213 g

Driver type Sample mass characteristics for golf club head

In this example, the mass ratio for the golf coupler mechanism 1000 with respect to the assembled club head 101 may be very low, as summarized in Table 2 below.

Exemplary Driver Head Driver head range Mass of the sleeve
Mass of non-assembled club head (Approximately) < = 2.7% (Approximate) ≤ 3% Mass of the sleeve
Mass of assembled club head (Approximately)? 2.6% (Approximate) ≤ 3% ( Sleeve + fastening part ) Weight
Mass of non-assembled club head (Approximately)? 3.5% (Approximately) < = 4% ( Sleeve + fastening part ) Weight
Mass of assembled club head (Approximate)? 3.4% (Approximately) < = 4%

Driver type Weight of sample for golf club head

In another example, as in the case of a golf club head 101 (Figs. 1-4, 8, and 9) that includes a fairway wood type golf club head, The different components may have mass characteristics similar to those summarized in Table 3 below.

Exemplary 3-FW head An exemplary 5-FW head Exemplary 7-FW head FW head range The mass of the club head 101 (not assembled) (Approx.) ≤205 g (Approx.) ≤209 g (Approximate) ≤213 g (Approx.) 200-225 g The mass of the sleeve 1100 (Approximately)? 5.2g (Approximately)? 5.2g (Approximately)? 5.2g (Approximate) ≤ 6g The mass of the sleeve 1100 + fixed fastening portion 3400 (Approximate) ≤6.8g (Approximate) ≤6.8g (Approximate) ≤6.8g (Approx.) ≤ 7.5g Total mass of assembled club head (Approximate) ≤211.8 g (Approximate) ≤215.8 g (Approximate) ≤ 219.8 g (Approx.) 203-233g

Sample Mass Characteristics of Fairway Wood Type Golf Club Head

In this example, the mass ratio for the golf coupler mechanism 1000 with respect to the assembled club head 101 may be very low, as summarized in Table 4 below.

Exemplary 3-FW head An exemplary 5-FW head Exemplary 7-FW head FW head range Mass of the sleeve
Mass of non-assembled club head (Approximately)? 2.54% (Approximate)? 2.48% (Approximate)? 2.44% (Approximate)? 2.8% Mass of the sleeve
Mass of assembled club head (Approximate)? 2.46% (Approximate)? 2.41% (Approximate)? 2.36% (Approximate)? 2.8% ( Sleeve + fastening part ) Weight
Mass of non-assembled club head (Approximately)? 3.32% (Approximately) < = 3.25% (Approximately)? 3.19% (Approximately)? 3.5% ( Sleeve + fastening part ) Weight
Mass of assembled club head (Approximately)? 3.21% (Approximately)? 3.16% (Approx.) ≤3.10% (Approximately)? 3.5%

Fairway Wood Type Golf Club Head Sample Weight

In some instances, the aforementioned mass, dimension, and / or positional characteristics may provide flexibility and / or gain with respect to the position of the center of gravity CG of the golf club head and / or mass distribution. For example, the shaft sleeve center of gravity 1150 (FIG. 1) of the shaft sleeve 1100 may be configured to be disposed in the shaft sleeve CG vertical distance 1159 (FIG. 1).

In some examples, for example, in embodiments where the club head 101 (Figs. 1-4, 8, and 9) includes a driver type golf club head, the shaft sleeve center of gravity 1150 of the shaft sleeve 1100 1) may be configured to be disposed at a shaft sleeve CG vertical distance 1159 that may be less than approximately 50 mm above the outer soul lower end 10141 of the soul 1014 of the driver type club head 101. In some examples or other examples, the shaft sleeve CG vertical distance 1159 may be less than about 46.2 mm above the outer soul lower end 10141. In some examples or other examples, the shaft sleeve CG vertical distance 1159 may be less than about 43.7 mm above the outer soul lower end 10141. In some embodiments, the shaft sleeve center of gravity 1150 of the shaft sleeve 1100 is also about 0.59 inches (about 0.59 inches) on the assembled club head center of gravity 1050 (FIG. 1) of the assembled, Lt; RTI ID = 0.0 > 15mm) < / RTI > In the same or other embodiments, the shaft sleeve CG vertical distance 1159 may be at least about 7.6 mm larger than the assembled club head CG vertical distance 1058 of the driver type club head 101.

In other examples, for example, in embodiments where the club head 101 (Figs. 1-4, 8, and 9) includes a fairway wood type golf club head, the shaft sleeve center of gravity of the shaft sleeve 1100 1) may be configured to be disposed at a shaft sleeve CG vertical distance 1159 of less than about 35.6 mm above the outer soul lower end of the soul 1014 of the fairway wood type club head 101. In some examples or other examples, the shaft sleeve CG vertical distance 1159 may be less than about 1.35 inches (about 34.3 mm) above the outer soul lower end 10141 of the soul 1014 of the fairway wood type club head 101 . In some embodiments, the shaft sleeve center of gravity 1150 of the shaft sleeve 1100 is also less than about 19 mm above the assembled club head center of gravity 1050 (FIG. 1) of the assembled fairway wood type golf club head 101 May be configured to be disposed in the shaft sleeve CG vertical distance 1059 (FIG. In the same or other embodiments, the shaft sleeve CG vertical distance 1159 may be at least about 16.5 mm greater than the assembled club head CG vertical distance 1058 of the fairway wood type club head 101.

In this example, as shown in FIG. 1, the hosel 1015 includes a hosel axis 1016 extending along the longitudinal centerline of the hosel 1015. The hosel axis 1016 defines a hosel angle 1018 with respect to the lower horizontal axis 1019 and the lower horizontal axis 1019 abuts the lower end 10141 horizontally. In some instances, the hoselite angle 1018 may be, for example, approximately 58 degrees. In this embodiment, the shaft sleeve CG vertical distance 1159 and the assembled club head CG vertical distance 1058 extend vertically from the lower horizontal axis 1019.

The club head 101 also includes a crown height vertical distance 1018 that extends vertically to the top of the crown 1017 with respect to the lower end 10141. For example, in some embodiments, where the club head 101 includes a driver type golf club head, the crown height vertical distance 1018 may be at least approximately 59.7 mm relative to the soul lower end 10141. In some embodiments or other embodiments, the assembled club head CG vertical distance may be less than about 33 mm relative to the soul lower end 10141.

Also, in some examples, as shown in FIG. 1, the receiving top 1032 is configured to be held below the top of the crown 1017 of the golf club head 101, located on top of the hosel 1015. In the same or other embodiments, the hosel 1015 may be formed in a shape that does not have a cylindrical outer upper section, and the crown 1017 may be formed without forming a cylindrical contour of the hosel 1015 It is also possible to form a transition from the upper end 1032 of the receiving portion of the standing hosel 1015 to the substantially circular outer periphery. According to this feature, the position of the center of gravity of the shaft sleeve 1100 can be positioned closer to the center of gravity of the assembled golf club head 101.

Referring again to the drawings, FIG. 18 is a flow diagram of a method 18000 that may be used to provide, create and / or manufacture a golf coupler mechanism in accordance with the present invention. In some examples, the golf coupler mechanism may be similar to the golf coupler mechanism 1000 of FIGS. 1-11 and 14-16, or the golf coupler mechanism of FIGS.

The method 18000 includes a block 18100 that provides a shaft sleeve coupled to an end of a golf club shaft and including an arcuate sleeve coupler set. In some examples, the shaft sleeve may be similar to the shaft sleeve 1100 (Figs. 1-7, 10, 14-16) and / or the shaft sleeve 12100 (Fig. 12) May be similar to the golf club shaft 102 (Figures 1 and 5). In the same or other example, the arcuate sleeve coupler set includes a sleeve coupler set 3110 (FIGS. 3-7, 10, 14-17) and / or a sleeve coupler set 12110 (FIG. 12) Can be similar.

Block 18200 of method 18000 includes providing a shaft receiving portion of a golf club head including an arcuate receiving portion coupler set configured to engage a set of arcuate sleeve couplers of a shaft sleeve. In some examples, the shaft receiving portion is similar to the shaft receiving portion 3200 (Figs. 3 and 4, 8 and 9, 11, 14 to 17) and / or the shaft receiving portion 13200 can do. The arcuate accommodating sub-coupler set includes an accommodating sub-coupler set 3210 (FIGS. 3 and 4, 8 and 9, 11, 14-17) and / Can be similar.

Block 18300 of method 18000 includes providing a fixed fastener configured to secure the shaft sleeve to the shaft receiving portion. In some instances, the fastening portion may be similar to the fastening portion 3400 (Figs. 3 and 4). The fastening portion may be configured to pull the shaft sleeve toward the shaft receiving portion to seat the arcuate sleeve coupler set against the arcuate receiving portion coupler set.

In some instances, one or more of the different blocks of method 18000 may be combined into a single block or concurrently, and / or the order of such blocks may be reversed. For example, in some embodiments, block 18200 and block 18300 may be combined, if desired. In the same example or otherwise, some of the blocks of method 18000 may be divided into multiple sub-blocks. As an example, block 18100 includes a sub-block for forming a horizontal curvature radius of the arcuate surface of the sleeve coupler of the arcuate sleeve coupler set and a sub-block for forming a vertical tapered portion of the arcuate surface of the sleeve coupler of the arcuate sleeve coupler set. And may include sub-blocks. Also, in some examples, method 18000 may include additional or different blocks. As an example, method 18000 may include other blocks for providing the shaft receiving portion of block 18200 to the golf club head, and / or other blocks for providing the shaft with a shaft sleeve of block 18100. Also, by way of example, method 18000 may include only some of the steps described above. For example, block 18300 may be optional in some embodiments. Other variations on method 18000 may be practiced without departing from the scope of the present disclosure.

Slot cap golf coupling mechanism

Returning to the drawings, FIG. 21 illustrates a forward perspective view of a golf club head 21101 having a golf coupling mechanism 211000 according to an embodiment. In many embodiments, the golf coupling mechanism 211000 may include a shaft sleeve 211100 configured to be coupled to an end of a golf club shaft, such as a golf club shaft 211102. In various embodiments, the golf club head 21101 may be similar to the golf club head 101 (Fig. 1); The golf coupling mechanism 211000 may be similar to the golf coupling mechanism 1000 (FIG. 1); And / or the golf club shaft 21102 may be similar or identical to the golf club shaft 102 (Fig. 1). Accordingly, the golf coupling mechanism 211000 may include the shaft sleeve 211100 and the shaft receiving portion 213200. On the other hand, the shaft sleeve 211100 may be similar to the shaft sleeve 1100 (Fig. 1) and / or the shaft receiving portion 213200 may be similar to the shaft receiving portion 3200 (Fig. 3).

Referring back to the drawing, FIG. 22 illustrates a side view of the shaft sleeve 211100 separated from the golf club head 21101 (FIG. 21) according to the embodiment of FIG. 23 illustrates a cross-sectional view of shaft sleeve 211100 along section line XXIII-XXIII in FIG. 22, according to the embodiment of FIG. 21. FIG.

Referring to Figure 22, the shaft sleeve 211100 includes a shaft sleeve body 22103 and a shaft sleeve cap 22104. Also, in many embodiments, the shaft sleeve body 22103 can include a sleeve coupler set 223130 having one or more couplers protruding from the sleeve body outer wall 223130, and the shaft receiving portion 213200 May include a receiving portion coupler set configured to engage a sleeve coupler set 223110 of the shaft sleeve 211100 to limit rotation of the shaft sleeve 211100 relative to the shaft receiving portion 213200. [ In these or other embodiments, the sleeve coupler set 213110 may be similar to the sleeve coupler set 3110 (FIG. 3); Sleeve body outer wall 223130 may be similar to sleeve outer wall 3130 (FIG. 3); And / or the receiver sub-coupler set may be similar to the receiver sub-coupler set 3210 (FIG. 3). As described in more detail below, in many embodiments, the shaft sleeve cap 22104 may include a ferrule and may be configured to couple the sleeve body 22103 with the golf club shaft 21102 (Figure 21) Lt; / RTI >

 23, the shaft sleeve 211100 includes (i) a shaft bore 233120 configured to receive an end of the golf club shaft 21102 (FIG. 21), (ii) a sleeve body bottom 233192, (Iii) a bore lower surface 23111; And / or (iv) a shaft sleeve top 231191. The fastener bore 23105 can be configured to receive a fastening (not shown) to secure the shaft sleeve 211100 to the shaft receiving portion 213200 (Fig. 21). In addition, the bore lower surface 23111 may include a lower surface (e.g., the deepest surface) of the shaft bore 232120. In many embodiments, shaft bore 233120 may be similar to shaft bore 3120 (Fig. 3); Fixed fastener bore 23105 may be similar or identical to a bore configured to receive fastener 3400 (FIG. 3); The sleeve body lower end 233192 may be similar or identical to the sleeve lower end 3192 (Fig. 3); The fastening portion may be similar or identical to the fastening portion 3400 (FIG. 3); And / or shaft sleeve top 231191 may be similar or identical to sleeve top 1191 (FIG. 3).

In addition, when the shaft sleeve body 22103 is coupled to the shaft sleeve cap 22104, the shaft sleeve 211100 includes a shaft sleeve height 23119, a shaft sleeve body height 23120, a shaft sleeve cap height 23121, And may include a shaft sleeve cap top height 23122. The shaft sleeve height 23119 may refer to the distance from the sleeve body lower end 233192 to the shaft sleeve upper end 231191 when measured approximately perpendicularly to the sleeve body lower end 233192. On the other hand, the shaft sleeve body height 23120 can refer to the distance from the sleeve body lower end 233192 to the upper end of the shaft sleeve body 22103 when measured parallel to the shaft sleeve height 23119, (23121) can refer to the distance from the bottom of the shaft sleeve cap 22104 to the shaft sleeve top 231191 when measured parallel to the shaft sleeve height 23119. [ In addition, the shaft sleeve cap top height 23122 may refer to the difference between the shaft sleeve height 23119 and the shaft sleeve body height 23120.

For example, the shaft sleeve height 23119 may be approximately 1.78 inches or greater, approximately 1.82 inches or less. In a particular example, the shaft sleeve height 23119 may be approximately 1.8 inches.

Also, the shaft sleeve body height 23120 may be about 1.527 inches or greater, and about 1.567 inches or less. In a particular example, the shaft sleeve body height 23120 may be approximately 1.547 inches.

In addition, the shaft sleeve cap height 23121 may be approximately 0.43 inches or greater, and approximately 0.47 inches or less. In a particular example, the shaft sleeve cap height 23121 may be approximately 0.45 inches.

On the other hand, for example, the shaft sleeve cap top height 23122 may be approximately 0.23 inches or greater, and approximately 0.27 inches or less. In a particular example, the shaft sleeve body height 23122 may be approximately 0.25 inches.

In some embodiments, the fastening (not shown) for insertion into fastener bore 23105 may include titanium over steel. The fastening portion may also include a fastening portion mass. The mass of the fastener may be about 2.7 grams or more.

Referring to the following drawings, FIG. 24 illustrates a side view of a shaft sleeve body 22103 separated from a shaft sleeve cap 22104 (FIG. 22) in accordance with the embodiment of FIG. Shaft sleeve body 22103 may be associated with one or more zones 24106. [ For example, zone 24106 may include a fastener section 24107, an intermediate section 24108, a coupler section 24109, and a cap interface section 24110.

The fastener section 24107 may refer to a portion of the shaft sleeve body 22103 disposed between the sleeve body lower end 233192 and the bore lower surface 23111 (Figure 23). Coupler section 24109, on the other hand, extends from the lowest point of the sleeve coupler set 223110 (e.g., the portion of the sleeve coupler set 223110 closest to the sleeve body lower end 233192 (Figure 23) May refer to a portion of a shaft sleeve body disposed from a highest point (e.g., a portion of the sleeve coupler set 223110 furthest from the sleeve body lower end 233192). Intermediate section 24108 may refer to a portion of shaft sleeve body 22103 between coupling section section 24107 and coupler section 24109 and cap interface section 24110 may refer to intermediate section 24108 May refer to the portion of the shaft sleeve body 22103 that is opposite the coupler section 24109. [

When the golf club head 21101 (FIG. 21) is swung and / or actuated to hit the golf ball, the fastener section 24107 and the coupler section 24109 may be subjected to high stresses. On the other hand, the intermediate section 24108 and / or the cap interface section 24110 may be subjected to a lower stress than the high stress experienced by the fastener section 24107 and the coupler section 24109.

Securing the shaft sleeve 211100 (FIG. 21) to the shaft receiving portion 213200 (FIG. 21) using a fastening portion may help to offset high stresses in the fastening portion 24107. The coupler (s) of the sleeve coupler set 223110 are configured to provide additional thickness to the sleeve body wall of the shaft sleeve body 22103 due to the high stresses that may be received in the coupler section 24109. [ ). Thus, the coupler (s) can reinforce the sleeve body wall in the coupler section 24109 to offset the high stresses in the coupler section 24109. [ The coupler (s) of the sleeve coupler set 223110 is located at the end of the coupler section 24109 furthest from the sleeve body bottom 233192 (e.g., where the coupler section 24109 contacts the cap interface section 23110) (E. G., Where the coupler section 24109 contacts the middle section 24108) of the coupler section 24109 closest to the sleeve body lower end 233192 (FIG. 23) with a greater thickness , Linearly or curvilinearly). For example, the largest thickness may be approximately 0.75 inches thick and the smallest thickness may be approximately 0.020 inches thick. In many embodiments, tilting the coupler (s) of the sleeve coupler set 223110 (Figure 22) provides continuity (e.g., a smooth transition in thickness) between the intermediate section 24108 and the cap interface section 24110 .

In some embodiments, the coupler (s) of the sleeve coupler set 223110 may be symmetrical in profile. The length of the coupler (s) of the sleeve coupler set 223110 may be about 0.38 inches or less (e.g., at the portion of the sleeve body outer wall 223130 of the shaft sleeve body 42103) In other parts of the sleeve body outer wall 423130).

In some embodiments, the coupler (s) of the sleeve coupler set 223110 may be configured such that the coupler (s) are located on the outer surface of the sleeve body 22103 of the shaft sleeve body 22103 rather than the other portion (e.g., The profile may be asymmetric so that it is longer in the first portion of the first portion 223130. The length of the coupler (s) of the sleeve coupler set 223110 may be about 0.38 inches or less (e.g., at the portion of the sleeve body outer wall 223130 of the shaft sleeve body 22103) In other portions of the sleeve body outer wall 223130 of FIG. In many embodiments, the coupler (s) of the sleeve coupler set 223110 (Fig. 22) are configured such that the end of the coupler section 24109 furthest from the sleeve body bottom 233192 (e.g., coupler section 24109) In the portion of the sleeve body outer wall 223130 of the shaft sleeve body 22103 closest to the sleeve axis of the shaft sleeve body 22103 at the point of contact with the sleeve body 22103. The sleeve axis may be similar or identical to sleeve axis 5150 (FIG. 5). The coupler (s) of the sleeve coupler set 223110 (Fig. 22) includes a sleeve sleeve body 22103, which includes a sleeve axis and intersects a plane extending generally perpendicular to the sleeve body lower end 233192, May be the longest in the portion of the body outer wall 223130.

On the other hand, since the intermediate zone 24108 is subjected to a lower stress when the golf club head 21101 is swung and / or actuated to hit the golf ball, the sleeve body wall of the shaft sleeve body may be part of the coupler section 24109 And / or the intermediate zone 24108 may have holes or recesses that reduce the weight of the intermediate zone 24108. In some embodiments, For example, the sleeve body wall of the shaft sleeve body 22103 in the middle section 24108 may include a thickness (e.g., average thickness) of approximately 0.020 inches.

Turning now to FIG. 23, in some embodiments, shaft bore 233120 may include a width (e. G., Diameter) of approximately 0.346 inches. In these embodiments, the width may include an average width and / or may be approximately constant throughout the shaft bore 233120.

In various embodiments, the shaft sleeve body 22103 may be coupled to the shaft bore 233120 via an etch channel (not shown) to provide a better surface area for epoxy joining the golf club shaft 21102 (Figure 21) to the shaft sleeve body 22103. [ 23112). The etch channel 23112 may be partially or entirely in the middle zone 24108 (Figure 24), such as half of the middle zone 24108 (Figure 24), which is closer to the coupler zone 24109 (Figure 24) Coupler section 24109 (Fig. 24).

In these or other embodiments, the shaft sleeve body 22103 may include receiving grooves 23113 (e.g., an undercut notch). 25) of the shaft sleeve cap 22104 to secure the shaft sleeve cap 22104 to the shaft sleeve body 22103, as shown in more detail below, Communicating and interlocking. Therefore, in many embodiments, the receiving groove 23113 can complement the extruding portion 25114 (Fig. 25). In some embodiments, the receiving groove 23113 may be disposed in the cap interface area 24110 (Fig. 24). In many embodiments, the receiving groove 23113 may be disposed at the interface of the cap interface section 24110 (FIG. 24) and the coupler section 24109 (FIG. 24).

Referring to Fig. 25, Fig. 25 illustrates a side view of a shaft sleeve cap 22104 separated from a shaft sleeve body 22103 (Fig. 22) in accordance with the embodiment of Fig.

In some embodiments, the shaft sleeve cap 22104 may include a cap wall 25115. In addition, the cap wall 22115 may include an extrusion 25114 and one or more slits 25116.

The extruded portion 25114 may include a lip that extends outwardly from the cap wall 25115, such as at the end of the cap wall 25115, for example. The extrusion 25114 may include a width (e.g., diameter) greater than the remaining width (e.g., diameter) of the cap wall 25515 and / or the shaft bore 233120.

On the other hand, the slit (s) 25116 allows the shaft sleeve cap 22104 to be resiliently (e.g., temporarily) compressed when engaged with the shaft sleeve body 22103 (Figure 22) and separated from the shaft sleeve body For example, in the axial direction) toward itself. Thus, the extruded portion 25114 can be positioned in and out of the receiving groove 23113 (Fig. 23) to couple and separate the shaft sleeve cap 22104 relative to the shaft sleeve body 22103 (Fig. 22). In these embodiments, the extrusion 25114 may be operable as a locking feature to lock or snap lock the shaft sleeve cap 22104 in place.

Shaft sleeve cap 22104 may also be operable to provide damping (e.g., vibration and / or stress reduction) between golf club shaft 21102 (Figure 21) and shaft sleeve body 22103 (Figure 22). For example, the shaft sleeve cap 22104 may act as a " shaft pillow "by increasing the concentricity of the golf club shaft 21102 (Figure 21) within the shaft sleeve body 22103 (Figure 22). In many embodiments, the concentricity of the golf club shaft 21102 (Figure 21) within the shaft sleeve body 22103 (Figure 22) can be strongly correlated to the durability of the golf club shaft 21102 (Figure 21). Thus, the shaft sleeve cap 22104 can prevent breakage of the golf club shaft 21102 (Fig. 21) and increase the overall life of the golf club head 21101 (Fig. 21).

Referring to Fig. 26, Fig. 26 illustrates an elevation view of a shaft sleeve cap 22104 separated from a shaft sleeve body 22103 (Fig. 22) in accordance with the embodiment of Fig. In many embodiments, the shaft sleeve cap 22104 may include a cap bore 26116, a cap bore width 26117, and one or more centering features 26118. In some embodiments, shaft bore 233120 (Fig. 23) may also include cap bore width 26117. Fig. The cap bore width 26117 may refer to the width (e.g., diameter) of the cap bore 26116. In these embodiments, the width may comprise an average width (e.g., average diameter).

The cap bore width 26117 may be greater than the width (e.g., diameter) of the golf club shaft 21102 (Fig. 21). The dissimilarity in the widths of the cap bore width 26117 and the golf club shaft 21102 (Fig. 21) can result in inconsistent shaft orientation. Accordingly, centering feature (s) 26118 can be extruded from the inner surface of cap bore 26116 to prevent misalignment of golf club shaft 21102 (Fig. 21). The distance that the centering feature (s) 26118 extend from the inner surface of the cap bore 26116 is greater than the effective width (e. G., Diameter) of the collective size less than or equal to approximately the golf club shaft 21102 Quot;). ≪ / RTI > The cap bore width 26117 is greater than the effective width of the cap bore 26116 resulting from the centering feature (s) 26118. [ In addition, the cap bore width 26117 may be similar to or the same as the width of the shaft bore 233120 (Fig. 23). Therefore, when the golf club shaft 21102 (FIG. 21) is introduced into the shaft sleeve cap 22104 and the shaft sleeve body 22103 (FIG. 23), the centering feature (FIG. 21) in the cap bore 26616 as described above and about the sleeve axis.

Referring again to Fig. 22, the shaft sleeve body 22103 may comprise any suitable material. For example, in some embodiments, the shaft sleeve body 22103 may comprise a metal or metal alloy (e.g., an aluminum alloy). In these examples, the aluminum alloy may comprise about 70% or more aluminum and about 75% or less aluminum. In a more specific example, the aluminum alloy may comprise approximately 70%, 71%, 72%, 73%, 74%, or 75% aluminum. Similarly, the shaft sleeve cap 22104 may comprise any suitable material configured to elastically compress the cap wall 25115 (Fig. 25) as described above. For example, the shaft sleeve cap 22104 may comprise a polymeric material.

In many embodiments, the shaft sleeve body 22103 may include a shaft sleeve body mass, and the shaft sleeve cap 22104 may comprise a shaft sleeve cap mass. In addition, the shaft sleeve 211100 may include a shaft sleeve mass including a shaft sleeve body mass and a shaft sleeve cap mass. The shaft sleeve mass may be similar to the mass of the sleeve described above with respect to sleeve 1100 (FIG. 1).

In these or other embodiments, the shaft sleeve mass may be about 4.3 grams or less. In addition, the shaft sleeve body mass can be greater than or equal to about 3.3 grams, and less than or equal to about 3.8 grams. Moreover, the shaft sleeve cap mass may be greater than or equal to about 0.5 grams and less than or equal to about 1.0 grams. In various embodiments, the shaft sleeve mass may be approximately 0.5 gram smaller than the mass of the sleeve 1100 (FIG. 1). In addition, the mass of the shaft sleeve combined with the mass of the fastener can be approximately 7 grams or more. Thus, in various embodiments, the shaft sleeve 211100 can provide weight advantages over the shaft sleeve 1100 (Fig. 1).

Referring to FIG. 21, the golf club head 21101 may include a disassembled club head mass and an assembled club head mass. The disassembled club head mass may be similar to the disassembled club head mass described above with respect to the golf club head 101 (Fig. 1), and the assembled club head mass may be adjusted to match the golf club head 101 It can be similar to one assembled club head mass.

In some embodiments, the disassembled club head mass may be greater than or equal to about 185 grams, and less than or equal to about 205 grams. In these or other embodiments, the disassembled club head mass may be greater than about 192 grams.

In some embodiments, the assembled club head mass may be greater than or equal to about 188 grams and less than or equal to about 213 grams. In these or other embodiments, the assembled club head mass may be greater than about 199 grams.

Also, the ratio of the shaft sleeve mass to the disassembled club head may be approximately 2.0%, 2.2%, or 2.4% or less; The ratio of the shaft sleeve mass to the assembled club head mass may be approximately 1.95%, 2.16%, or 2.35% or less; The ratio of the shaft sleeve mass to the fixed fastener mass to the disassembled club head mass may be approximately 3.4%, 3.6%, or 3.8% or less; And / or the ratio of the shaft sleeve mass to the anchor mass for the assembled club head mass may be about 3.3%, 3.5%, or 3.7% or less.

On the other hand, the golf club head 21101 may include an assembled club head CG associated with the assembled club head CG vertical distance, and the shaft sleeve 211100 may include a shaft sleeve CG associated with the shaft sleeve CG vertical distance . In these embodiments, the assembled club head CG may be similar or identical to the assembled club head CG 1050 (FIG. 1); The assembled club head CG vertical distance may be similar or identical to the assembled club head CG vertical distance 1058 (FIG. 1); The shaft sleeve CG may be similar or identical to the shaft sleeve CG 1032 (Fig. 1); And / or the shaft sleeve CG vertical distance may be similar or identical to the shaft sleeve CG vertical distance 1159 (FIG. 1). In many embodiments, the shaft sleeve CG vertical distance may be about 0.010 inches (about 0.254 millimeters) or more and about 0.050 inches (about 1.27 millimeters) or less than the shaft sleeve CG vertical distance 1159 (FIG. 1). For example, the shaft sleeve CG vertical distance may be about 44.9 millimeters or more from the bottom of the sole of the golf club head 21101, and about 46 millimeters or less from the bottom of the sole of the golf club head 21101. In a particular example, the vertical distance of the shaft sleeve CG is approximately 44.9 millimeters, 45.0 millimeters, 45.1 millimeters, 45.2 millimeters, 45.3 millimeters, 45.4 millimeters, 45.5 millimeters, 45.6 millimeters, 45.7 millimeters, 45.8 millimeters from the bottom of the sole of the golf club head 21101 , 45.9 millimeters, 46.0 millimeters or more. In some embodiments, the shaft sleeve CG vertical distance of the golf coupling mechanism 211000 is approximately 44.9 millimeters, 45.0 millimeters, 45.1 millimeters, 45.2 millimeters, 45.3 millimeters, 45.4 millimeters, 45.5 millimeters from the bottom of the sole of the golf club head 41101 , 45.6 millimeters, 45.7 millimeters, 45.8 millimeters, 45.9 millimeters, or 46.0 millimeters or less. The shaft sleeve CG vertical distance of the golf coupling mechanism 411000 may be 44.9 millimeters from the bottom of the sole of the golf club head 41101. The bottom of the soul may be similar or identical to the bottom of soul 10141 (FIG. 1).

27, Fig. 27 illustrates a flow diagram of a method 27000 according to an embodiment. In many embodiments, method 27000 may include a method of manufacturing a golf club head of one or more parts of a golf club head. The golf club head may be similar or identical to the golf club head 21101 (FIG. 21).

The method 27000 may include providing a shaft sleeve (step 27001). The shaft sleeve may be similar or identical to shaft sleeve 211100 (Figure 21). FIG. 28 illustrates an exemplary step 27001 according to the embodiment of FIG.

For example, in FIG. 28, step 27001 may include step 28001 of providing (e.g., manufacturing) a shaft sleeve body. The shaft sleeve may be similar or identical to the shaft sleeve body 22103 (Figure 22).

Step 27002 may also include a step 28002 to provide (e.g., manufacture) a shaft sleeve cap. The shaft sleeve cap may be similar or identical to the shaft sleeve cap 22104 (Figure 22).

27, method 27000 may include a step 27002 of providing (e.g., making) a golf club head. The golf club head may be similar or identical to the golf club head 21101 (FIG. 21). In some embodiments, step 27001 may be performed before step 27002, and may be performed after step 27002. [ In other embodiments, steps 27001 and 27002 may be performed substantially simultaneously.

The method 27000 may also include the step 27003 of inserting the shaft sleeve into the hosel bore of the golf club head. The hosel bore may be similar or identical to the hosel bore described above in connection with the golf club head 21101 (Fig. 21).

The method 2700 may also include the step 27004 of inserting the golf club shaft into the shaft bore. The golf club shaft may be similar or identical to the golf club shaft 21102 (FIG. 21), and the shaft bore may be similar or identical to shaft bore 233120 (FIG. 23).

Meanwhile, the method 2700 may include the step 27005 of inserting the shaft sleeve cap into the shaft bore. In some embodiments, step 27004 may be performed before step 27005, or may be performed after step 27002. [ In yet another embodiment, steps 27004 and 27005 may be performed substantially simultaneously. In a further embodiment, step 27003 may be performed prior to step 27004 and / or step 27005, and may be performed after step 27004 and / or 27005. In many embodiments, one or more of steps 27001-27003 may be performed before one or more of steps 27004-27005, or may be performed after one or more of steps 27004-27005.

The method 27000 may also include the step 27006 of securing the shaft sleeve to the hosel of the golf club head using a fastener. The hosel may be similar or identical to the hosel described above in connection with the golf club head 21101 (Fig. 21), and the fastener may be similar or identical to the fastener described above with respect to the golf club head 21101 (Fig. 21) .

Solid Rib type  Cap coupling mechanism

29, FIG. 29 illustrates a front perspective view of a golf club head 41101 having a golf coupling mechanism 411000 according to an embodiment. In many embodiments, the golf coupling mechanism 411000 may include a shaft sleeve 411100 configured to be coupled to an end of a golf club shaft, such as a golf club shaft 211102. In various embodiments, the golf club head 41101 may be similar to the golf club head 101 (Fig. 1); The golf coupling mechanism 411000 may be similar to the golf coupling mechanism 1000 (FIG. 1); And / or the golf club shaft 41102 may be similar or identical to the golf club shaft 102 (Fig. 1). Accordingly, the golf coupling mechanism 411000 may include a shaft sleeve 411100 and a shaft receiving portion 413200. [ On the other hand, the shaft sleeve 411100 may be similar to the shaft sleeve 1100 (Fig. 1) and / or the shaft receiving portion 413200 may be similar to the shaft receiving portion 3200 (Fig. 3).

Referring to FIG. 30, FIG. 30 illustrates a side view of a shaft sleeve 411100 separated from a golf club head 21101 (FIG. 29) according to the embodiment of FIG. On the other hand, FIG. 31 illustrates a cross-sectional view of the shaft sleeve 411100 along the section line XXXIII-XXXIII of FIG. 30, according to the embodiment of FIG.

Referring to Figure 30, the shaft sleeve 411100 includes a shaft sleeve body 42103 and a shaft sleeve cap 42104. Also, in many embodiments, the shaft sleeve body 22103 may include a sleeve coupler set 223130 having one or more couplers projecting from the sleeve body outer wall 423130, and the shaft receiving portion 413200 May include a receiving portion coupler set configured to engage a sleeve coupler set 423110 of the shaft sleeve 411100 to limit rotation of the shaft sleeve 411100 relative to the shaft receiving portion 413200. [ In these or other embodiments, the sleeve coupler set 413110 may be similar to the sleeve coupler set 3110 (FIG. 3); Sleeve body outer wall 423130 may be similar to sleeve outer wall 3130 (Figure 3); And / or the receiver sub-coupler set may be similar to the receiver sub-coupler set 3210 (FIG. 3). As described in more detail below, in many embodiments, the shaft sleeve cap 42104 may include a ferrule and may be configured to couple the sleeve body 42103 with the golf club shaft 41102 (Figure 29) Lt; / RTI >

 31, the shaft sleeve 411100 includes (i) a shaft bore 433120 configured to receive the end of the golf club shaft 41102 (Fig. 29), (ii) a sleeve body bottom 433192, (Iii) a bore lower surface 43111; (iv) a cap bore 42110 configured to receive the end of the golf club shaft 41102 and to engage the shaft bore 433120 and / or (v) the shaft sleeve top 431191. The fastening bore 43105 may be configured to receive a fastening (not shown) to secure the shaft sleeve 411100 to the shaft receiving portion 413200 (Fig. 29). In addition, the bore lower surface 43111 may include a lower surface (e.g., the deepest surface) of the shaft bore 432120. In many embodiments, shaft bore 433120 may be similar to shaft bore 3120 (Fig. 3); Fixed fastener bore 43105 may be similar or identical to a bore configured to receive fastener 3400 (Fig. 3); Sleeve body bottom 433192 may be similar or identical to sleeve bottom 3192 (Fig. 3); The fastening portion may be similar or identical to the fastening portion 3400 (FIG. 3); And / or shaft sleeve top 431191 may be similar or identical to sleeve top 1191 (FIG. 3).

In addition, when the shaft sleeve body 42103 is coupled to the shaft sleeve cap 42104, the shaft sleeve 411100 includes a shaft sleeve height 43119, a shaft sleeve body height 43120, a shaft sleeve cap height 43121, And may include a shaft sleeve cap top height 23122. The shaft sleeve height 43119 may refer to the distance from the sleeve body lower end 433192 to the shaft sleeve upper end 431191 when measured approximately perpendicularly to the sleeve body lower end 433192. The shaft sleeve body height 43120 may refer to the distance from the sleeve body lower end 433192 to the upper end of the shaft sleeve body 42103 when measured parallel to the shaft sleeve height 43119, 43121 may refer to the distance from the bottom of the shaft sleeve cap 42104 to the shaft sleeve top 431191 as measured parallel to the shaft sleeve height 43119. [ In addition, the shaft sleeve cap top height 43122 may refer to the difference between the shaft sleeve height 43119 and the shaft sleeve body height 43120.

For example, the shaft sleeve height 43119 may be approximately 1.78 inches or greater, approximately 1.82 inches or less. In a particular example, the shaft sleeve height 43119 may be approximately 1.8 inches.

In addition, the shaft sleeve body height 43120 may be greater than or equal to about 1.529 inches and less than or equal to about 1.569 inches. In a particular example, the shaft sleeve body height 43120 may be approximately 1.549 inches.

In addition, the shaft sleeve cap height 43121 may be approximately 0.46 inches or greater, and approximately 0.50 inches or less. In a specific example, the shaft sleeve cap height 43121 may be approximately 0.48 inches.

On the other hand, for example, the shaft sleeve cap top height 43122 may be approximately 0.23 inches or greater, and approximately 0.27 inches or less. In a particular example, the shaft sleeve body height 23122 may be approximately 0.25 inches.

In some embodiments, the fastening (not shown) for insertion into fastener bore 23105 may include titanium over steel. The fastening portion may also include a fastening portion mass. The mass of the fastener may be about 2.7 grams or more.

Referring to the following drawings, FIG. 32 illustrates a side view of a shaft sleeve body 42103 separated from a shaft sleeve cap 42104 (FIG. 30) in accordance with the embodiment of FIG. Shaft sleeve body 42103 may be associated with one or more zones 44106. For example, zone 44106 may include a fastening section 44107, a middle section 44108, a coupler section 44109, and a cap interface section 44110.

The fastener section 44107 may refer to a portion of the shaft sleeve body 42103 disposed between the sleeve body lower end 433192 and the bore lower surface 43111 (Fig. 31). On the other hand, the coupler section 424109 extends from the lowest point of the sleeve coupler set 423110 (e.g., the portion of the sleeve coupler set 423110 closest to the sleeve body lower end 433192 (Figure 31)) to the sleeve coupler set 423110 May refer to a portion of a shaft sleeve body disposed from a highest point (e.g., a portion of the sleeve coupler set 423110 furthest from the sleeve body lower end 433192). Intermediate section 44108 may refer to a portion of shaft sleeve body 42103 between coupling section section 44107 and coupler section 44109 and cap interface section 44110 may refer to intermediate section 44108 May refer to the portion of the shaft sleeve body 42103 that is opposite the coupler section 44109. [ 32, the cap interface area 44110 (FIG. 32) may further include an upper ring 44115 (FIG. 32).

When the golf club head 41101 (FIG. 29) is swung and / or actuated to hit the golf ball, the fastener region 44107 and the coupler region 44109 may be subjected to high stress. On the other hand, intermediate zone 44108 and / or cap interface zone 44110 may be subjected to lower stresses than the high stresses experienced by fastener zone 44107 and coupler zone 44109.

Fastening shaft sleeve 411100 (FIG. 29) to shaft receiving portion 413200 (FIG. 29) using a fastening portion can help to offset high stresses in fastening portion 44107. The coupler (s) of the sleeve coupler set 423110 are configured to provide additional thickness to the sleeve body wall of the shaft sleeve body 42103 due to the high stresses that may be received in the coupler section 44109. [ ). Thus, the coupler (s) can reinforce the sleeve body wall in the coupler section 44109 to offset the high stresses in the coupler section 44109. The coupler (s) of the sleeve coupler set 423110 is located at the end of the coupler section 44109 furthest from the sleeve body bottom 433192 (e.g., where the coupler section 44109 contacts cap interface section 44110) (E. G., Where the coupler section 44109 contacts the middle section 44108) of the coupler section 44109 closest to the sleeve body lower end 433192 (FIG. 31) , Linearly or curvilinearly). For example, the largest thickness may be approximately 0.75 inches thick and the smallest thickness may be approximately 0.020 inches thick. In many embodiments, tilting the coupler (s) of the sleeve coupler set 423110 (Figure 30) provides continuity (e.g., a smooth transition in thickness) between the intermediate section 44108 and the cap interface section 44110 .

In some embodiments, the coupler (s) of the sleeve coupler set 423110 may be symmetrical in profile. The length of the coupler (s) of the sleeve coupler set 423110 may be about 0.38 inches or less (e.g., at the portion of the sleeve body outer wall 423130 of the shaft sleeve body 42103) In other parts of the sleeve body outer wall 423130).

In some embodiments, the coupler (s) of the sleeve coupler set 423110 are configured such that the coupler (s) are located on the sleeve body outer wall 42103 of the shaft sleeve body 42103 rather than the other portion (e.g., Lt; RTI ID = 0.0 > 423130 < / RTI > The length of the coupler (s) of the sleeve coupler set 423110 may be about 0.38 inches or less (e.g., at the portion of the sleeve body outer wall 423130 of the shaft sleeve body 42103) In other portions of the sleeve body outer wall 423130 of FIG. In many embodiments, the coupler (s) of the sleeve coupler set 423110 (Fig. 30) includes an end (e.g., coupler section 44109) of the coupler section 44109 (Fig. 32) furthest from the sleeve body lower end 433192, May be the longest at the portion of the sleeve body outer wall 423130 of the shaft sleeve body 42103 closest to the sleeve axis of the shaft sleeve body 42103 at the point of contact with the cap interface area 44110. [ The sleeve axis may be similar or identical to sleeve axis 5150 (FIG. 5). The coupler (s) of the sleeve coupler set 423110 (FIG. 30) includes a sleeve sleeve body 42103 that includes a sleeve axis and intersects a plane extending generally perpendicular to the sleeve body lower end 433192, May be the longest in the portion of the body outer wall 423130.

On the other hand, since the intermediate zone 44108 is subjected to a lower stress when the golf club head 41101 is swung and / or actuated to hit the golf ball, the sleeve body wall of the shaft sleeve body may be part of the coupler zone 44109, And / or intermediate zone 44108 may have holes or recesses that reduce the weight of intermediate zone 44108. In some embodiments, For example, the sleeve body wall of the shaft sleeve body 42103 in the middle zone 44108 may include a thickness (e.g., average thickness) of approximately 0.020 inches.

Turning now to Fig. 31, in some embodiments, the shaft sleeve body 42103 may include a width (e.g., outer diameter). The outer diameter of the shaft sleeve body 42103 may be approximately 0.405 inches or greater and approximately 0.445 inches or less. In a particular example, the outer diameter of the shaft sleeve body may be 0.425 inches.

In some embodiments, the shaft bore may include a width (e.g., diameter) (Figure 31). The diameter of the shaft bore 433120 may be reduced from the middle of the shaft bore to the bore lower surface 43111. The diameter of the bore cap may be similar or identical to the diameter of the intermediate shaft bore 433130. The diameter of the bore bottom 43150 may be greater than or equal to about 0.320 inches and less than or equal to about 0.360 inches. In a particular example, the diameter of the bore bottom may be 0.340 inches. The diameter of intermediate shaft bore 433130 may be greater than or equal to about 0.326 inches and less than or equal to 0.366 inches. In a particular example, the diameter of the intermediate shaft bore 433130 may be 0.346 inches. The diameter of the cap bore 42115 may be approximately 0.326 inches or greater and 0.366 inches or less. In a particular example, the diameter of cap bore 42115 may be 0.346 inches.

In various embodiments, the shaft sleeve body 42103 may be coupled to the shaft bore 433120 via an etch channel (not shown) to provide a better surface area for epoxy joining the golf club shaft 41102 (Figure 29) to the shaft sleeve body 42103 43112). The etch channel 43112 may be partially or wholly of the intermediate zone 44108 (Figure 32), such as half of the intermediate zone 44108 (Figure 32) closer to the coupler zone 44109 (Figure 32) and / Coupler section 44109 (Fig. 32).

In these or other embodiments, the shaft sleeve body 42103 may include receiving grooves 43113 (e.g., an undercut notch). 31) of the shaft sleeve cap 42104 of the shaft sleeve cap 42104 to secure the shaft sleeve cap 42104 to the shaft sleeve body 42103, as described in more detail below 33). ≪ / RTI > Therefore, in many embodiments, the receiving groove 43113 (Fig. 34) of the shaft sleeve body 42103 can complement the extruded portion 45114 (Fig. 33). In some embodiments, the receiving groove 43113 may be disposed in the cap interface area 44110 (Figure 32). 35B) may be disposed at the interface of the cap interface area 44110 (FIG. 32) and the coupler section 32 (FIG. 32) (see also FIG. 31) .

Referring to FIG. 33A, FIG. 33A illustrates an upright side view of a shaft sleeve cap 42104 separated from a shaft sleeve body 42103 (FIG. 30) in accordance with the embodiment of FIG. FIG. 33B illustrates a tilted plan view of the shaft sleeve cap 42104 separated from the shaft sleeve body 42103 (FIG. 30) according to the embodiment of FIG. Figure 34 illustrates a cross-sectional view of a shaft sleeve cap 42104 along the section line XLV-XLV of Figure 33A, in accordance with the embodiment of Figure 29; The shaft sleeve cap 42104 may further include a cap wall 45040 (Figure 33A). The cap wall may include an outer cap wall 45115 at one end of the cap wall and an inner cap wall 45120 opposite the outer cap wall.

Referring to FIG. 33A, a shaft sleeve cap 42104 may include an upper cap zone 45050 and a lower cap zone 45060. Top cap zone 45050 may include an upper ring 45045 at the top of upper cap zone 45050 and a lower edge shelf 45055 at the lower end of upper cap zone 45050. [ The upper cap section 45050 increases the diameter from the top to the bottom toward the bottom edge shelf 45055. Lower cap section 45060 has an outer diameter smaller than upper cap section 45050.

The lower cap section 45060 may include an extrusion 45114 projecting from the outer cap wall 45115. Extrusion 45114 may include a lip extending outwardly from outer cap wall 45115 (Fig. 34). The extrusion 45114 can be formed to have a width 45200 greater than the diameter of the remaining cap wall 45200 of the lower cap section 45060 and / or the diameter of the shaft bore 43120 (Figs. 33A and 34) ). The width 45400 of the lower shelf 45055 of the upper cap section 45050 is greater than the width 45300 of the extrusion 45114 of the lower cap section 45060 (FIG. 34).

The lower cap section 45060 of the shaft sleeve cap 41204 is fitted within the cap interface section 44110 and coupler section 44109 of the shaft sleeve body 42103 (Fig. 32). The extruded portion 45114 of the lower cap section 45060 of the shaft sleeve cap 41204 includes receiving grooves 43113 to couple and separate the shaft sleeve cap 41204 relative to the shaft sleeve body 42103. In one embodiment, ) (Fig. 34). The receiving groove 43113 (Fig. 34) can complement the extruded portion 45114 (Fig. 33) of the lower cap section 45060. In these embodiments, the extrusion 45115 may be operable as a locking feature or snap in place between the receiving grooves 43113 (Figure 34) of the shaft sleeve body 42103 (Figure 32). In some embodiments, the extrusion 45115 may be extended at an upward angle to allow bending when the shaft sleeve cap 41204 is fitted within the shaft sleeve body 42103 (Figure 32). 32, the lower shelf 45055 of the shaft sleeve cap 42104 engages the cap interface area 44115 of the shaft sleeve body 42103 when the shaft sleeve cap 41204 is fitted to the shaft sleeve body 42103. [ (Fig. 32).

Shaft sleeve cap 42104 may include shaft bore 43120 (Figure 33B). The shaft bore diameter 43130 is constant over both the upper cap zone 45050 and the lower cap zone 45060. The combination of the shaft sleeve cap 42104 (upper and lower section) and the cap interface section 44110 and coupler section 44109 of the shaft sleeve body 42103 prevents epoxy leakage during the assembly process.

The shaft sleeve cap 42104 extends from the upper cap section 45050 to the lower cap section 45060 in parallel with one another along the inner cap wall 45120 into a shaft bore 43120 of the shaft sleeve cap 42104, Or more ribs 45202 (Fig. 33B). Rib 45202 provides additional sealing and may securely engage shaft sleeve cap 41204 within shaft sleeve body 42103. Rib 45202 can also center the shaft of golf club 41102 firmly within shaft sleeve 411100.

Shaft sleeve cap 42104 provides stability compared to shaft sleeve body 42103 without shaft sleeve cap 42104. (1) the overall design of the shaft sleeve cap 42104, (2) the rib 45202 on the inner cap wall 45120 of the shaft sleeve cap 42104, (3) the outer cap wall 45115 of the shaft sleeve cap 42104 (4) a receiving groove 43113 of the shaft sleeve body 42103 and (5) a bore diameter 43111 decreasing from the middle of the shaft bore to the bore bottom 43111 of the shaft sleeve body 42103, Can center the shaft of the golf club 41102 in both the top and bottom of the shaft sleeve 411100 individually or in any combination thereof and provide greater stability to the shaft 41102 of Figure 29 . The centering increases the concentricity of the golf club shaft and reduces the stress on the shaft upon swinging of the golf club head and impact with the golf ball.

These factors also provide damping (e.g., vibration) and stress reduction between the golf club shaft 41102 (Figure 29) and the shaft sleeve body 42103 (Figure 29), alone or in combination. For example, the shaft sleeve cap 42104 may act as a " shaft pillow "by increasing the concentricity of the golf club shaft 41102 (Figure 30) within the shaft sleeve body 42103 (Figure 31). In many embodiments, the concentricity of the golf club shaft 41102 (Figure 29) within the shaft sleeve body 42103 (Figure 30) can be strongly correlated with the durability of the golf club shaft 41102 (Figure 31). (2) the extrusion 45115 on the outer cap wall 45115 of the shaft sleeve cap 42104, (3) the extrusion 45115 on the outer cap wall 45115 of the shaft sleeve cap 42104, The bore diameters decreasing from the middle of the shaft bore to the bore bottom 43111 of the shaft sleeve body 42103 may be individually or in any combination of these, It is possible to prevent breakage of the club shaft 41102 (Fig. 29) and increase the overall service life of the golf club head 41101 (Fig. 29).

Referring again to FIG. 30, the shaft sleeve body 42103 may comprise any suitable material. For example, in some embodiments, the shaft sleeve body 22103 may comprise a metal or metal alloy (e.g., an aluminum alloy). In these examples, the aluminum alloy may comprise about 70% or more aluminum and about 75% or less aluminum. In a more specific example, the aluminum alloy may comprise approximately 70%, 71%, 72%, 73%, 74%, or 75% aluminum.

The shaft sleeve cap 42104 may comprise any suitable material configured to elastically compress the cap wall 25115 (Fig. 25) as described above. For example, the shaft sleeve cap 22104 may comprise a polymeric plastic material, and the polymeric plastic material may be a thermoplastic material, or a soft polymeric plastic according to the Shore D hardness scale. Flexible polymer plastics are shore D hardness grades of no more than 40, 45, 50, 55 or 60. Flexible polymer plastics are Shore D hardness grades that can not be greater than 55. The polymeric plastic material may be comprised of polystyrene, polyvinyl chloride, nylon, polymethacrylate, rubber, polycarbonate, synthetic rubber, or copolymers thereof.

In many embodiments, the shaft sleeve body 42103 may comprise a shaft sleeve body mass, and the shaft sleeve cap 42104 may comprise a shaft sleeve cap mass. In addition, the shaft sleeve 411100 may include a shaft sleeve mass including a shaft sleeve body mass and a shaft sleeve cap mass. The shaft sleeve mass may be similar to the mass of the sleeve described above with respect to sleeve 1100 (FIG. 1).

In these or other embodiments, the shaft sleeve mass may be about 4.0 grams, 4.1 grams, 4.2 grams, 4.3 grams, 4.4 grams, 4.5 grams, 4.6 grams, 4.7 grams, 4.8 grams, 4.9 grams, or 5.0 grams or more . Also, the shaft sleeve body mass can be about 4.2 grams or more, and about 4.8 grams or less. The shaft sleeve body mass may be 4.5 grams. Moreover, the shaft sleeve cap mass can be approximately 3.8 grams, 3.9 grams, 4.0 grams, 4.1 grams, 4.2 grams, 4.3 grams or 4.4 grams. The shaft sleeve cap mass may be greater than or equal to about 0.1 grams and less than or equal to about 0.7 grams. In various embodiments, the shaft sleeve mass may be approximately 0.4 gram smaller than the mass of the sleeve 1100 (FIG. 1). In addition, the shaft sleeve mass combined with the fixture mass can be about 7.2 grams or more. Thus, in various embodiments, the shaft sleeve 411100 can provide weight advantages over the shaft sleeve 1100 (FIG. 1).

29, the golf club head 41101 may include a disassembled club head mass and an assembled club head mass. The disassembled club head mass may be similar to the disassembled club head mass described above with respect to the golf club head 101 (Fig. 1), and the assembled club head mass may be adjusted to match the golf club head 101 It can be similar to one assembled club head mass.

In some embodiments, the disassembled club head mass may be greater than or equal to about 185 grams, and less than or equal to about 205 grams. In these or other embodiments, the disassembled club head mass may be greater than about 192 grams.

In some embodiments, the assembled club head mass may be greater than or equal to about 188 grams and less than or equal to about 213 grams. In these or other embodiments, the assembled club head mass may be greater than about 199 grams.

Also, the ratio of the shaft sleeve mass to the disassembled club head may be approximately 2.0%, 2.2%, or 2.4% or less; The ratio of the shaft sleeve mass to the assembled club head mass may be approximately 1.95%, 2.16%, or 2.35% or less; The ratio of the shaft sleeve mass to the fixed fastener mass to the disassembled club head mass may be approximately 3.4%, 3.6%, or 3.8% or less; And / or the ratio of the shaft sleeve mass to the anchor mass for the assembled club head mass may be about 3.3%, 3.5%, or 3.7% or less.

On the other hand, the golf club head 41101 may include an assembled club head CG associated with the assembled club head CG vertical distance, and the shaft sleeve 411100 may include a shaft sleeve CG associated with the shaft sleeve CG vertical distance . In these embodiments, the assembled club head CG may be similar or identical to the assembled club head CG 1050 (FIG. 1); The assembled club head CG vertical distance may be similar or identical to the assembled club head CG vertical distance 1058 (FIG. 1); The shaft sleeve CG may be similar or identical to the shaft sleeve CG 1032 (Fig. 1); And / or the shaft sleeve CG vertical distance may be similar or identical to the shaft sleeve CG vertical distance 1159 (FIG. 1) as measured from the bottom of the club head.

In many embodiments, the shaft sleeve CG vertical distance of the shaft sleeve 411100 (Figure 31) is approximately 0.052 inches (approximately 1.32 millimeters) or greater than the shaft sleeve CG vertical distance of the shaft sleeve 211100 (Figure 23), 0.092 inches About 2.34 millimeters). The shaft sleeve CG vertical distance of the shaft sleeve 411100 (Fig. 31) may be about 0.042 inches (about 1.07 millimeters) or more and 0.062 inches (about 1.58 millimeters) or less than the shaft sleeve CG vertical distance of the shaft sleeve 1159 have. The shaft sleeve CG vertical distance of the golf coupling mechanism 411000 may be approximately 43.5 millimeters or more from the bottom of the sole of the golf club head 41101 and approximately 47.0 millimeters or less from the bottom of the sole of the golf club head 41101. [ In some embodiments, the shaft sleeve CG vertical distance of the golf coupling mechanism 411000 may be approximately 43.5 millimeters, 43.6 millimeters, 43.7 millimeters, 43.8 millimeters, 43.9 millimeters, 44.0 millimeters, 44.1 millimeters from the bottom of the sole of the golf club head 41101 , 44.2 millimeters, 44.3 millimeters, 44.4 millimeters, 44.5 millimeters, 44.6 millimeters, 44.7 millimeters, 44.8 millimeters, 44.9 millimeters, 45.0 millimeters, 45.1 millimeters, 45.2 millimeters, 45.3 millimeters, 45.4 millimeters, 45.5 millimeters, 45.6 millimeters, 45.7 millimeters, 45.8 millimeters 46.4 millimeters, 46.0 millimeters, 46.1 millimeters, 46.1 millimeters, 46.2 millimeters, 46.3 millimeters, 46.4 millimeters, 46.5 millimeters, 46.6 millimeters, 46.7 millimeters, 46.8 millimeters, 46.9 millimeters, or 47.0 millimeters. In some embodiments, the shaft sleeve CG vertical distance of the golf coupling mechanism 411000 may be approximately 43.5 millimeters, 43.6 millimeters, 43.7 millimeters, 43.8 millimeters, 43.9 millimeters, 44.0 millimeters, 44.1 millimeters from the bottom of the sole of the golf club head 41101 , 44.2 millimeters, 44.3 millimeters, 44.4 millimeters, 44.5 millimeters, 44.6 millimeters, 44.7 millimeters, 44.8 millimeters, 44.9 millimeters, 45.0 millimeters, 45.1 millimeters, 45.2 millimeters, 45.3 millimeters, 45.4 millimeters, 45.5 millimeters, 45.6 millimeters, 45.7 millimeters, 45.8 millimeters 46.4 millimeters, 46.0 millimeters, 46.0 millimeters, 46.1 millimeters, 46.2 millimeters, 46.3 millimeters, 46.4 millimeters, 46.5 millimeters, 46.6 millimeters, 46.7 millimeters, 46.8 millimeters, 46.9 millimeters, or 47.0 millimeters. The shaft sleeve CG vertical distance of the golf coupling mechanism 411000 may be 45.3 millimeters from the bottom of the sole of the golf club head 41101. The bottom of the soul may be similar or identical to the bottom of soul 10141 (FIG. 1).

In some embodiments, the shaft sleeve CG vertical distance of the golf coupling mechanism 411000 is approximately 32.0 millimeters, 32.1 millimeters, 32.3 millimeters, 32.4 millimeters, 32.5 millimeters, 32.6 millimeters, 32.7 millimeters from the bottom of the sole of the golf club head 41101 , 32.8 millimeters, 32.9 millimeters, 33.0 millimeters, 33.1 millimeters, 33.2 millimeters, 33.3 millimeters, 33.4 millimeters, 33.5 millimeters, 33.6 millimeters, 33.7 millimeters, 33.8 millimeters, 33.9 millimeters, 34.0 millimeters, 34.1 millimeters, 34.2 millimeters, 34.3 millimeters, 34.4 Millimeter, or greater than 34.5 millimeters. In some embodiments, the shaft sleeve CG vertical distance of the golf coupling mechanism 411000 is approximately 32.0 millimeters, 32.1 millimeters, 32.3 millimeters, 32.4 millimeters, 32.5 millimeters, 32.6 millimeters, 32.7 millimeters from the bottom of the sole of the golf club head 41101 , 32.8 millimeters, 32.9 millimeters, 33.0 millimeters, 33.1 millimeters, 33.2 millimeters, 33.3 millimeters, 33.4 millimeters, 33.5 millimeters, 33.6 millimeters, 33.7 millimeters, 33.8 millimeters, 33.9 millimeters, 34.0 millimeters, 34.1 millimeters, 34.2 millimeters, 34.3 millimeters, 34.4 Millimeter, or 34.5 millimeters or less. The shaft sleeve CG vertical distance of the golf coupling mechanism may be 33.6 millimeters from the bottom of the sole of the golf club head 41101.

Referring to FIG. 36, FIG. 36 illustrates a flowchart of a method 47000 according to an embodiment. In many embodiments, method 47000 may include a method of manufacturing a golf club head of one or more parts of a golf club head. The golf club head may be similar or identical to the golf club head 41101 (FIG. 29).

Method 47000 may include providing a shaft sleeve (step 47001). The shaft sleeve may be similar or identical to the shaft sleeve 411100 (Figure 30). 36 illustrates an exemplary step 47001 according to the embodiment of FIG.

For example, in FIG. 36, step 47001 may include step 48001 to provide (e.g., manufacture) a shaft sleeve body. The shaft sleeve may be similar or identical to the shaft sleeve body 42103 (Figure 37).

Step 47002 may also include step 48002 to provide (e.g., manufacture) a shaft sleeve cap. The shaft sleeve cap may be similar or identical to the shaft sleeve cap 42104 (Fig. 38).

Referring now to FIG. 36, method 47000 may include step 47002 of providing (e.g., making) a golf club head. The golf club head may be similar or identical to the golf club head 41101 (FIG. 29). In some embodiments, step 47001 may be performed before step 47002, and may be performed after step 27002. [ In other embodiments, steps 47001 and 47002 may be performed substantially simultaneously.

Method 47000 may also include the step 47003 of inserting the shaft sleeve into the hosel bore of the golf club head. The hosel bore may be similar or identical to the hosel bore described above in connection with the golf club head 41101 (Fig. 29).

The method 4700 may also include the step 47004 of inserting the golf club shaft into the shaft bore. The golf club shaft may be similar or identical to golf club shaft 41102 (FIG. 29), and the shaft bore may be similar or identical to shaft bore 433120 (FIG. 31).

Meanwhile, the method 47000 may include the step 47005 of inserting the shaft sleeve cap into the shaft bore. In some embodiments, step 47004 may be performed before step 47005, or may be performed after step 27002. [ In other embodiments, steps 47004 and 47005 may be performed substantially simultaneously. In a further embodiment, step 47003 may be performed prior to step 47004 and / or step 47005, and may be performed after step 27004 and / or step 27005. In many embodiments, one or more of steps 47001-47003 may be performed before one or more of steps 47004-47005, or may be performed after one or more of steps 47004-47005.

The method 47000 may also include the step 47006 of securing the shaft sleeve to the hosel of the golf club head using the fastening portion. The hosel may be similar or identical to the hosel described above with respect to the golf club head 41101 (Fig. 31), and the fastener may be similar or identical to the fastener described above with respect to the golf club head 21101 (Fig. 31) .

Although the Golf Coupling Mechanism and associated methods of this disclosure have been described with reference to specific embodiments, various modifications may be made without departing from the spirit or scope of the disclosure. By way of example, in an embodiment, a sleeve coupler set 3110 (Figs. 3-7, 10, 14-17), a sleeve coupler set 12110 (Fig. 12), a sleeve coupler set 223110 22, and / or sleeve coupler set 411100 may include only two sleeve couplers and may include a receiver coupler set 3210 (FIGS. 3 and 4, 8 and 9, 11, 14, 17), the receiving portion coupler set of the receiving portion coupler set 13210 (Fig. 13), the shaft receiving portion 213200 (Fig. 21) and / or the shaft receiving portion 413200 Only two receiving sub-couplers may be included. In this embodiment, only two configurations may be possible between the shaft sleeve and the shaft receiving portion, and the golf coupler set may allow for adjustment between two lie angles or two loft angles. Of course, in an embodiment, it is also contemplated that a sleeve coupler set with three, five, six, seven, eight, or more sleeve couplers and three, five, six, seven, eight, A receiving-side coupler set with further receiving-side couplers may be provided, and the number of combinations of possible lie angles and loft angles is correspondingly increased.

The foregoing description provides further examples of such changes and other modifications. Likewise, other permutations of different embodiments with one or more features of the various figures may be considered. Accordingly, it is to be understood that the description, the claims, and the drawings are for purposes of illustrating the scope of the disclosure and are not intended to limit the invention. The scope of the present application should be limited only to the extent required by the appended claims.

The golf coupling mechanism and associated methods disclosed herein may be realized through various embodiments, and the above description of certain embodiments does not necessarily provide a complete description of all possible embodiments. Rather, the detailed illustrations of the drawings and the drawings themselves show at least one preferred embodiment and may also show variations.

In addition, benefits, other advantages, and problem solutions are described in connection with specific embodiments. However, the benefits, advantages, solutions, and / or components (s) that may cause any benefit, advantage, or solution that may occur or become more pronounced are not to be construed as limiting the scope of the claims, Is not to be understood as being an essential, essential, or essential feature or element of such claim, unless explicitly stated to the contrary, in whole or in part.

Because golf rules may change from time to time new rules may be adopted by golf standardization organizations and / or coordination bodies such as, for example, the USGA, the Royal Andean Golf Club of St. Andrews (R & A) Rules may be excluded or modified), the golf equipment relating to the devices, methods and articles of manufacture described herein may be made in accordance with or at any time in accordance with the golf rules at a particular point in time. Accordingly, the golf equipment relating to the apparatuses, methods and articles of manufacture described herein may be advertised, provided, and / or sold for sale as golf equipment consistent with or incompatible with the foregoing. The devices, methods, and articles of manufacture described herein are not limited in this regard.

Although the foregoing examples may be described in connection with a driver type golf club, the devices, methods, and articles of manufacture described herein may be used in conjunction with a fairway wood type golf club, a hybrid type golf club, an iron type golf club, a wedge type golf club, And may be applied to other types of golf clubs, such as type golf clubs. Alternatively, the devices, methods, and articles of manufacture described herein may be applied to other types of sports equipment, such as hockey sticks, tennis racquets, phishing poles, ski poles, and the like.

In addition, where embodiments and / or limitations are not explicitly claimed in (1) the claims, and (2) are potential equivalents for expressing the elements and / or limitations of the claims under the doctrine of equivalents, The embodiments and limitations disclosed herein are not donated to the public in accordance with dedication.

Claims (20)

In a golf club head,
As a club head body,
A sole comprising a lower portion, an upper portion facing the sole portion, a heel portion, a tow portion opposite the heel portion, a rear portion, and a forward portion having a striking surface opposite the rear portion; And
A club head body comprising a hosel; And
A shaft sleeve insertable within the hosel and configured to engage the golf club shaft with the hosel;
Lt; / RTI >
The hosel comprising a hosel bore configured to receive a shaft sleeve,
The shaft sleeve,
A shaft bore configured to receive an end of the golf club shaft;
A shaft sleeve body including a sleeve body outer wall, and at least one coupler on the sleeve body outer wall; And
A shaft sleeve cap configured to be coupled to the shaft sleeve body,
Wherein the center of gravity of the shaft sleeve is located at a shaft sleeve CG vertical distance of about 46.5 millimeters or less relative to the bottom of the soul when the golf club head is in the addressed position with the shaft sleeve fixed within the hosel. The method according to claim 1,
The shaft sleeve body includes an intermediate section,
The shaft sleeve body includes a sleeve body wall,
And the sleeve body wall comprises an intermediate zone thickness of about 0.020 inches in the middle zone. The method according to claim 1,
The shaft sleeve body includes a coupler section,
The shaft sleeve body includes a sleeve body wall,
The sleeve body wall includes a coupler zone thickness varying from a largest thickness of the sleeve body wall to a smallest thickness of the sleeve body wall in the coupler zone,
The largest thickness of the sleeve body wall is approximately 0.75 inches or less,
The smallest thickness of the sleeve body wall is about 0.020 inches or more. The method according to claim 1,
The hosel bore includes at least one receiving portion configured to engage at least one coupler,
Wherein the at least one coupler engages at least one receiving portion to limit rotation of the shaft sleeve relative to the hosel when the hosel bore receives the shaft sleeve. The method according to claim 1,
Wherein the shaft sleeve cap is removably coupled to the shaft sleeve body. The method according to claim 1,
The at least one coupler includes a plurality of couplers,
The plurality of couplers includes a first coupler and a second coupler,
Wherein the coupler length of the first coupler is the same as the coupler length of the second coupler. The method according to claim 1,
The at least one coupler includes a coupler length,
The coupler length is approximately 0.260 inches or greater and approximately 0.38 inches or less. The method according to claim 1,
The shaft sleeve body includes a receiving groove,
The shaft sleeve cap includes an extrusion portion,
Wherein the receiving groove is configured to receive the extruded portion when the shaft sleeve body is engaged with the shaft sleeve cap. The method according to claim 1,
The shaft sleeve cap includes at least one rib and a cap wall,
Wherein at least one rib is configured to rigidly couple and center with the shaft sleeve cap. The method according to claim 1,
The shaft sleeve cap includes one or more ribs extending into the cap bore and the cap bore,
Wherein one or more ribs center the golf club shaft in the shaft bore when the shaft bore receives the end of the golf club shaft. The method according to claim 1,
The shaft sleeve includes a shaft sleeve mass of approximately 4.5 grams,
The shaft sleeve body includes a shaft sleeve body mass of about 4.1 grams or less, or
Wherein the shaft sleeve cap comprises a shaft sleeve cap mass of about 0.3 grams or greater, and about 1.0 grams or less. The method according to claim 1,
The golf club head includes a fastening configured to couple the shaft sleeve to the hosel,
When the shaft sleeve cap is engaged with the shaft sleeve body and when the fastener secures the shaft sleeve to the hosel, the golf club head includes an assembled club head mass,
The assembled club head mass is about 199 grams or less. The method according to claim 1,
The golf club head includes a fastening configured to couple the shaft sleeve to the hosel,
When the shaft sleeve cap is engaged with the shaft sleeve body and when the fastener secures the shaft sleeve to the hosel, the golf club head includes an assembled club head mass,
The shaft sleeve includes a shaft sleeve mass,
Wherein the ratio of the shaft sleeve mass to the assembled club head mass is about 2.2% or less. The method according to claim 1,
The golf club head includes a disassembled club head mass,
The shaft sleeve includes a shaft sleeve mass,
Wherein the ratio of the shaft sleeve mass to the disassembled club head mass is about 2.3% or less. The method according to claim 1,
The shaft sleeve CG vertical distance is about 45.3 millimeters or less relative to the bottom of the soul. The method according to claim 1,
When the shaft sleeve body is coupled to the shaft sleeve cap, the shaft sleeve includes a shaft sleeve height, the shaft sleeve height is 1.78 inches or greater, 1.82 inches or less,
When the shaft sleeve body is coupled to the shaft sleeve cap, the shaft sleeve includes a shaft sleeve height, the shaft sleeve body height is greater than or equal to 1.529 inches and less than or equal to 1.569 inches, or
Wherein when the shaft sleeve body is coupled to the shaft sleeve cap, the shaft sleeve includes a shaft sleeve cap height, and the shaft sleeve cap height is greater than or equal to 0.46 inches and less than or equal to 0.50 inches. The method according to claim 1,
Wherein the shaft sleeve cap comprises soft polymer plastic and the soft polymer plastic can not be greater than 55 by a Shore D hardness grade. As a golf club head,
As a club head body,
A sole comprising a lower portion of the sole lower portion, an upper portion opposed to the sole portion, a heel portion, a tow portion opposed to the heel portion, a rear portion, and a front portion facing the rear portion and having a striking surface; And
A club head body comprising a hosel; And
A shaft sleeve insertable within the hosel and configured to engage the golf club shaft with the hosel;
Lt; / RTI >
The hosel comprising a hosel bore configured to receive a shaft sleeve,
The shaft sleeve,
A shaft bore configured to receive an end of the golf club shaft;
A shaft sleeve body including a sleeve body outer wall, and at least one coupler on the sleeve body outer wall; And
A shaft sleeve cap configured to be coupled to the shaft sleeve body,
The shaft sleeve body further includes an intermediate section and a sleeve body wall,
The shaft sleeve includes a shaft sleeve mass of approximately 4.5 grams,
The shaft sleeve body includes a shaft sleeve body mass of about 4.1 grams or less,
The shaft sleeve cap includes one or more ribs extending into the cap bore and the cap bore,
When the shaft bore receives the end of the golf club shaft, one or more ribs center the golf club shaft in the shaft bore,
The shaft sleeve cap is removably engaged with the shaft sleeve body,
Wherein the center of gravity of the shaft sleeve is located at a shaft sleeve CG vertical distance of approximately 43.5 millimeters or more and approximately 47.0 millimeters or less relative to the bottom of the sole when the golf club head is in the addressed position with the shaft sleeve fixed within the hosel. head. As a method,
Providing a shaft sleeve, the step of providing a shaft sleeve comprising:
Providing a shaft sleeve body; And
Providing a shaft sleeve cap,
The shaft sleeve is configured to be insertable within the hosel of the golf club head and configured to engage the golf club shaft with the hosel,
The golf club head includes a golf club head body and a hosel,
The soul including a lower portion of the sole lower portion, an upper portion opposed to the sole portion, a heel portion, a tow portion opposed to the heel portion, a rear portion, and a front portion opposed to the rear portion and having a striking surface,
The hosel comprising a hosel bore configured to receive a shaft sleeve,
The shaft sleeve,
A shaft bore configured to receive an end of the golf club shaft;
A shaft sleeve body including a sleeve body outer wall, and at least one coupler on the sleeve body outer wall; And
A shaft sleeve cap configured to be coupled to the shaft sleeve body,
Wherein the center of gravity of the shaft sleeve is located at a shaft sleeve CG vertical distance of about 46.5 millimeters or less relative to the bottom of the soul when the golf club head is in the addressed position with the shaft sleeve fixed within the hosel. 20. The method of claim 19,
Providing a golf club head;
Inserting a shaft sleeve into the hosel bore;
Inserting a golf club shaft into a shaft bore;
Inserting the shaft sleeve into the hosel using a fastening portion; And
Inserting the shaft sleeve cap into the shaft bore
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