JP2019520171A - Club head with enhanced club head face and related method - Google Patents

Abstract

Some embodiments comprise a club head having an enhanced club head face. Other embodiments of related club heads and methods are also disclosed. [Selected figure] Figure 1

Description

(Cross-reference to related applications)
This application is a priority of US Provisional Patent Application No. 62 / 521,998 filed Jun. 19, 2017, and US Provisional Patent Application No. 62 / 359,450 filed on July 7, 2016. Insist. This application also claims priority to US patent application Ser. No. 15 / 628,639, filed Jun. 20, 2017. The entire content of the above disclosure is incorporated herein by reference in its entirety.

  The present disclosure relates generally to sports equipment, and more particularly to golf club heads and related methods.

  Various properties of a golf club can affect the performance of the golf club. For example, the center of gravity, moment of inertia, and coefficient of restitution of the club head of a golf club are each characteristics of the golf club that can affect performance.

  The center of gravity and moment of inertia of the club head of the golf club are a function of the mass distribution of the club head. In particular, the mass of the club head is closer to the sole of the club head, farther from the face of the club head, and / or closer to the toe and heel ends of the club head Distributing such that the center of gravity and / or moment of inertia of the club head may change. For example, distributing the mass of the club head closer to the sole of the club head and / or farther away from the face of the club head increases the flight angle of the golf ball struck by the club head. It can. On the other hand, increasing the flight angle of a golf ball may increase the distance traveled by the golf ball. Furthermore, distributing the mass of the club head closer to the toe and / or heel end of the club head may affect the moment of inertia of the club head, which may be more forgiving of the golf club. Can change.

  Furthermore, the coefficient of restitution of the club head of a golf club may be at least a function of the flexibility of the face of the club head. On the other hand, the flexibility of the face of the club head can be a function of the face geometry (e.g. height, width and / or thickness) and / or the material properties of the face (e.g. Young's modulus). That is, maximizing the height and / or width of the face and / or minimizing the thickness and / or Young's modulus of the face increases the flexibility of the face and thereby the coefficient of restitution of the club head. Can increase, and increasing the coefficient of restitution of the club head of the golf club, which is essentially a measure of the energy transfer efficiency from the club head to the golf ball, increases the distance traveled by the golf ball after impact, The spin of the ball may be reduced and / or the ball speed of the golf ball may be increased.

  However, thinning the face of the club head may allow the mass from the face to be redistributed to other parts of the club head, and although the face may be more flexible, the face of the club head Thinning may also increase bending in the face to the point of buckling and failure. Accordingly, there is a need for devices and methods for preventing the club head face from buckling when the club head face is thinned.

  The following drawings are provided to facilitate further description of the embodiments.

FIG. 7 is a top, back, toe side view of a club head according to one embodiment. FIG. 2 is a top, front, heel side view of the club head according to the embodiment of FIG. 1; FIG. 1 is a view of a conventional club head according to one embodiment. Wherein the face surface of a conventional club head is impacting a golf ball (not shown) in a partial cross-sectional view taken along line 4-4 of FIG. 3 of a conventional club head according to the embodiment of FIG. Are simulated, and in this case, the resulting distortion is tripled, showing a state of stress-strain analysis. 5 is a cross-sectional view taken along section line 5-5 of FIG. 2 of the club head according to the embodiment of FIG. 1; FIG. 7 is a top, back, toe side view of a club head according to one embodiment. FIG. 7 is a top, front, toe side view of the club head according to the embodiment of FIG. 6; 5 is a side view of FIG. 2 along section line 5-5 of the club head according to another embodiment of FIG. 1; FIG. 9 is a top, back, heel side view of the club head according to the embodiment of FIG. 8; FIG. 5 is a flow chart of an embodiment of a method of providing a golf club head. FIG. 11 illustrates an exemplary operation of providing a reinforced device according to the embodiment of FIG. FIG. 7 is a diagram of an embodiment of a layer of vibration damping features. 5 is a side view of FIG. 2 along section line 5-5 of the club head according to the embodiment of FIG. 1; 1 is a front view of a golf club according to one embodiment. FIG. 5 is a top, back view of a club head according to one embodiment. FIG. 16 is a cross-sectional view of the club head taken along section line 6-6 of FIG. 15 according to the embodiment of FIG. 15; FIG. 7 is a cross-sectional view of a club head according to another embodiment. FIG. 7 is a cross-sectional view of a club head according to another embodiment. 18B is an enlarged view of a cross-sectional view of the club head according to the embodiment of FIG. 18A. FIG. 7 is a cross-sectional view of a club head according to another embodiment. FIG. 20 is a rear view of the club head according to the embodiment of FIG. 19; FIG. 20 is a front view of the club head according to the embodiment of FIG. 19;

  For the purpose of simplifying and clarifying the description, the drawings show the structure in a comprehensive manner, and for the purpose of well-known features and techniques, the description and details are provided to avoid unnecessarily obscuring the present disclosure. It may be omitted. Moreover, elements of the drawings do not necessarily reflect actual scale. For example, the dimensions of some of the elements in the drawings may be exaggerated relative to other elements to clarify the embodiments of the present invention. Like reference symbols in the different drawings indicate like elements.

  Terms such as "first", "second", "third" and "fourth" in the specification and claims are used to distinguish similar elements, and not necessarily in a particular order Or does not indicate time series. The terms so used are interchangeable under appropriate circumstances, for example, the embodiments described herein may be ordered other than as illustrated or otherwise described herein. It will be understood that it may be carried out with Further, "comprises", "have" and their conjugations are intended for non-exclusive inclusion and processes, methods, systems, articles, devices or equipment comprising lists of elements are not necessarily in these elements. It is not intended to be limiting, and may include elements not explicitly listed or other elements inherent to such processes, methods, systems, articles, devices, or apparatus.

  The terms “left”, “right”, “front”, “back”, “top”, “bottom”, “top”, “bottom” and the like in the specification and claims are for the purpose of description and are not necessarily to be interpreted. It does not describe permanent relative position. These terms are interchangeable under appropriate circumstances and the embodiments of the devices, methods and / or articles described herein are, for example, in an orientation different from that illustrated or described herein. It will be understood that it can work.

  The terms "connected," "connected," "connecting," "connecting" and the like are to be understood broadly, and mechanically and / or otherwise separate two or more elements. It refers to connecting. Two or more mechanical elements may be mechanically coupled, without being electrically or otherwise coupled. The connection may be of any length of time, eg, permanent or semi-permanent, or only for a moment.

  "Mechanical connection" etc. should be interpreted broadly, including any kind of mechanical connection.

  The absence of the words "removable", "removable" etc. near the word "connected" does not mean that the connection etc. of the object is removable or not removable. .

  Some embodiments have a golf club head. The golf club head has an upper end and a bottom end opposite the upper end, a front end and a rear end opposite the front end, and a toe end and a heel end opposite to the toe end And Additionally, the golf club head comprises a face element. The face element comprises a face surface located at the front end, the face surface comprising a face center and a face periphery. The face element also comprises a rear surface located at the rear end and generally opposite the face surface, the rear surface comprising a rear center and a rear peripheral edge substantially opposite the face center. Still further, the golf club head includes a reinforcing device located on the rear surface. In these embodiments, the x-axis extends generally parallel to the face surface, passes through the back center, and the y-axis extends generally parallel to the face surface, and extends generally perpendicular to the x-axis, Passing the back center, the z-axis extends substantially perpendicular to the face surface, extends substantially perpendicular to the x-axis and the y-axis, and intersects the back center. Further, the x-axis extends through the toe and heel ends and at an equal distance from the top and bottom ends, and the y-axis is through the top and bottom ends and toe Extending equidistantly from the end and heel end, the z-axis passes through the front and rear ends and (i) from the toe end and the heel end, and (ii) with the upper end It extends at an equal distance from the rear end. Furthermore, in these embodiments, the reinforcement device comprises a reinforcement element having a geometric center located substantially on the z-axis, the reinforcement element extending from the back surface to the back end and away from the front end , The reinforcement element comprises a looped rib. On the other hand, the face surface may be closer to the posterior surface proximal to the face center than proximal to the face periphery.

  Another embodiment comprises a golf club head. In some embodiments, the golf club head comprises an iron-type golf club head. The golf club head has an upper end and a bottom end opposite the upper end, a front end and a rear end opposite the front end, and a toe end and a heel end opposite to the toe end And Additionally, the golf club head comprises a face element. The face element comprises a face surface located at the front end, the face surface comprising a face center and a face periphery. The face element also comprises a rear surface located at the rear end and generally opposite the face surface, the rear surface comprising a rear center and a rear peripheral edge substantially opposite the face center. Still further, the golf club head includes a reinforcing device located on the rear surface. And still further, the golf club head comprises (i) a peripheral wall element extending away from the front end towards the rear end and away from the front end, and (ii) extending around the entire periphery of the rear surface. . The peripheral wall element has a first peripheral wall extending at the upper end along the rear peripheral edge of the rear surface and a second peripheral wall extending at the bottom end along the rear peripheral edge of the rear surface. Prepare. In these embodiments, the x-axis extends generally parallel to the face surface, passes through the back center, and the y-axis extends generally parallel to the face surface, and extends generally perpendicular to the x-axis, Passing the back center, the z-axis extends substantially perpendicular to the face surface, extends substantially perpendicular to the x-axis and the y-axis, and intersects the back center. Further, the x-axis extends through the toe and heel ends and at an equal distance from the top and bottom ends, and the y-axis is through the top and bottom ends and toe Extending equidistantly from the end and heel end, the z-axis passes through the front and rear ends and (i) between the toe end and the heel end, and (ii) the upper end It extends at an equal distance from the section and the rear end. Furthermore, in these embodiments, the reinforcement device comprises a reinforcement element comprising a geometric center located substantially on the z-axis, the reinforcement element extending from the back surface to the back end and away from the front end The reinforcing element comprises a closed circular looped rib. In addition, the golf club head includes an iron type golf club head, and a center thickness from the face center to the rear center is about 0.203 cm or less, and at least a portion of the second peripheral wall portion Thinner than the face element proximal to the face perimeter.

  Some embodiments further have an insert that at least partially fills in the cavity of the reinforcing element formed by the looped rib. In some embodiments, the cavity can be a central cavity. Also, the central cavity can be partially covered by the badge. The badge may be separate from the insert or may be integral with the insert. In other embodiments, the badge can be integral with the reinforcing element. The insert may be a lightweight material of less than about 3 g and may not significantly affect the center of gravity of the golf club head swing. In an alternative embodiment, the insert may weigh more than about 3 g, such as about 5 g to about 10 g, and may contribute to the swing weight or center of gravity of the club head.

  Further embodiments have vibration damping features disposed on the rear surface of the golf club head to reduce noise, to produce more desirable sound, and to reduce vibration of the golf club head. The vibration damping features can be comprised of damping foils, rubber, or other damping or vibration releasable materials or compositions such as pressure sensitive viscoelastic acrylic polymers. The vibration damping feature may be pressure sensitive, which reduces or eliminates vibration from the golf club head when the golf ball is struck. The vibration damping feature, in combination with obtaining better performance in a thin face golf club head, gives the golf club head a more desirable sound. The vibration damping feature is at least partially applied to the back surface of the golf club head. Vibration damping features can also be applied to the strengthening element. The vibration damping feature may further be applied to all or part of the cavity of the strengthening element. The cavity can be a central cavity. The central cavity on the back surface can also be partially covered by the vibration damping feature. The central cavity can also be partially covered by the badge, and vibration damping features can be disposed below the badge.

  Further embodiments include methods of providing a golf club head. The method includes (i) a face surface located at the front end and including the face center and the face peripheral edge, and (ii) a back surface located at the rear end and substantially opposite to the face surface, the face Providing a face element comprising a back center substantially opposite to the center and a back surface comprising a back peripheral edge, and providing a reinforced device on the back surface. In these embodiments, the golf club head has a top end opposite the top end and a bottom end opposite the top end, a front end and a back end opposite the front end, and a toe end opposite the toe end And a heel end on the side. Furthermore, the x-axis extends substantially parallel to the face surface, passes through the back center, and the y-axis extends generally parallel to the face surface, extends substantially perpendicular to the x-axis, passes through the back center And the z-axis extends generally perpendicular to the face surface, extends generally perpendicular to the x-axis and y-axis, and passes through the back center. Furthermore, the x-axis extends through the toe and heel ends and at an equal distance from the top and bottom ends, the y-axis passes through the top and bottom ends and Extending equidistantly from the toe end and the heel end, the z-axis passes through the front and rear ends and (i) from the toe end and the heel end, and (ii) the upper end And extend at an equal distance from the rear end. On the other hand, the reinforcement device comprises a reinforcement element comprising a geometric center located approximately on the z-axis, the reinforcement element extending away from the front end and away from the front end from the back surface, the reinforcement element being It has a looped rib. Also, the face surface may be closer to the posterior surface proximal to the face center than proximal to the face periphery.

  Some embodiments have a golf club. The golf club comprises a shaft and a golf club head coupled to the shaft. The golf club head has an upper end and a bottom end opposite the upper end, a front end and a rear end opposite the front end, and a toe end and a heel end opposite to the toe end And Additionally, the golf club head comprises a face element. The face element comprises a face surface located at the front end and comprising a face center and a face periphery. The face element also includes a rear surface located at the rear end and substantially opposite the face surface, the rear center having the rear center substantially opposite the face center, and the rear peripheral edge. Still further, the golf club head includes a reinforcing device located on the rear surface. In these embodiments, the x-axis extends generally parallel to the face surface, passes through the back center, and the y-axis extends generally parallel to the face surface, and extends generally perpendicular to the x-axis, Passing the back center, the z-axis extends substantially perpendicular to the face surface, extends substantially perpendicular to the x-axis and y-axis, and passes the back center. Further, the x-axis extends through the toe and heel ends and at an equal distance from the top and bottom ends, and the y-axis extends through the top and bottom ends and Extending at an equal distance from the end and the heel end, the z-axis passes through the front and rear ends and (i) from the toe end and the heel end, and (ii) with the upper end It extends at an equal distance from the rear end. Furthermore, in these embodiments, the strengthening device comprises a strengthening element having a geometric center located substantially on the z-axis, the strengthening element extending outward from the rear surface towards the rear end and away from the front end The reinforcement element is provided with a looped rib. On the other hand, the face surface may be closer to the posterior surface proximal to the face center than proximal to the face periphery.

  Turning to the drawings, FIG. 1 illustrates a top, back, to-side view of a club head 100 according to one embodiment. 2 shows a top, front, heel side view of the club head 100 according to the embodiment of FIG. Club head 100 is merely exemplary and is not limited to the embodiments presented herein. Club head 100 may be used in many different embodiments or examples not specifically shown or described herein.

  In general, club head 100 may comprise a golf club head. Golf club head 100 may be part of a corresponding golf club. For example, a golf club 1400 (FIG. 14) can include a golf club head 100 coupled to a shaft 1490 and a grip 1495. Further, the golf club head can be part of a set of golf club heads and / or the golf club can be part of a set of golf clubs. For example, club head 100 may comprise any suitable iron-type golf club head. In some embodiments, the club head 100 can comprise a muscle back iron type golf club head or a cavity back iron type golf club head. Nevertheless, although club head 100 will generally be described with reference to an iron-type golf club head, club head 100 may be, for example, a wood-type golf club head (e.g. driver club head, fairway wood club head, hybrid club head, etc. Or any other suitable type of golf club head, such as a putter golf club head. Generally, club head 100 may include any suitable material, but in many embodiments, club head 100 includes one or more metallic materials. Notwithstanding the foregoing, the devices, methods, and products described herein are not limited in this regard.

  For reference, the club head 100 has a bottom end 102 opposite the top end 101 and the top end 101, a front end 203 (FIG. 2) and a rear end opposite the front end 203 (FIG. 2). An end 104 and a heel end 106 opposite the toe end 105 and the toe end 105. Club head 100 also includes x-axis 107, y-axis 108, and z-axis 109.

  Meanwhile, the x-axis 107, the y-axis 108, and the z-axis 109 form a Cartesian reference coordinate system of the club head 100. Thus, the x-axis 107, the y-axis 108 and the z-axis 109 are perpendicular to one another. Furthermore, the x-axis 107 extends through the toe end 105 and the heel end 106 and is equidistant between the top end 101 and the bottom end 102, and the y-axis 108 is the top end 101. And extends through the bottom end 102 and is equidistant between the toe end 105 and the heel end 106, the z-axis 109 defines a front end 203 (FIG. 2) and a rear end 104 It extends through and is equidistant between (i) between the toe end 105 and the heel end 106, and (ii) between the upper end 101 and the rear end 102.

  The club head 100 comprises a club head body 110. The club head body 110 may be solid, hollow or partially hollow. When the club head body 110 is hollow and / or partially hollow, the club head body 110 can be provided with a shell structure, and furthermore, it can be filled and / or partially filled with a filling material different from the material of the shell structure It can be done. For example, the filler material can comprise plastic foam.

  The club head body 110 comprises a face element 111 and a strengthening device 112. In many embodiments, the club head body 110 can comprise a peripheral wall element 113.

  In many embodiments, face element 111 comprises a face surface 214 (FIG. 2) and a back surface 115. On the other hand, the face surface 214 (FIG. 2) comprises the face center 216 (FIG. 2) and the face peripheral edge 217 (FIG. 2), and the rear face 115 comprises the rear center 118 and the rear peripheral edge 119. The face surface 214 (FIG. 2) can refer to the striking face or striking plate of the club head 100 and can be configured to impact a ball (not shown) such as, for example, a golf ball. In many embodiments, the face surface 214 (FIG. 2) can include one or more scoring lines 223 (FIG. 2).

  In these or other embodiments, the face surface 214 (FIG. 2) can be located at the front end 203 (FIG. 2) and the back surface 115 can be located at the back end 104. Further, the back surface 115 can be generally opposite the face surface 214 (FIG. 2), and the back center 118 can be generally opposite the face center 216 (FIG. 2), and the back rim 119 Can be substantially opposite the face perimeter 217 (FIG. 2). In general, in many instances, face center 216 (FIG. 2) can refer to the geometric center of face surface 214 (FIG. 2). Thus, in these or other examples, face center 216 (FIG. 2) is approximately equidistant between toe end 105 and heel end 106 at face surface 214 (FIG. 2), and It can refer to a position that is approximately equidistant between the top end 101 and the bottom end 102. In various instances, face-centric refers to the United States Golf Association: Procedure for Measuring the Flexibility of a Golf Clubhead, USGA-TPX 3004, Revised 1.0.0, page 6, 2008, which is incorporated herein by reference. Pointing to the face-center defined on May 1, 2014 (acquired on May 12, 2014 from http://www.usga.org/equipment/testing/protocols/Test-Protocols-For-Equipment) Can. Similarly, in some instances, the back center 118 can refer to the geometric center of the back surface 115.

  As a reference, the x-axis 107 and the y-axis 108 can extend generally parallel to the face surface 214 (FIG. 2), and the z-axis 109 extends generally perpendicular to the face surface 214 (FIG. 2) can do. On the other hand, each of x-axis 107, y-axis 108 and z-axis 109 is back so that back center 118 comprises the origin of the Cartesian reference coordinate system formed by x-axis 107, y-axis 108 and z-axis 109 It can intersect with the center 118.

  In various embodiments, scoring lines 223 (FIG. 2) may each include one or more grooves and may extend between toe end 105 and heel end 106. In these or other embodiments, scoring line 223 (FIG. 2) may be substantially parallel to x-axis 107.

  In many embodiments, the enhancement device 112 comprises one or more enhancement elements 120 (e.g., enhancement elements 121). The reinforcing device 112 and / or the reinforcing element 120 are located at the rear surface 115 and extend outwardly from the rear surface 115 towards the rear end 104 and away from the front end 203 (FIG. 2). In many embodiments, each reinforcing element of reinforcing element 120 comprises an outer peripheral surface and a geometric center. In these or other embodiments, the geometric center of one or more of the reinforcement elements 120 (e.g., reinforcement element 121) can be located at about the z-axis 109. For example, the reinforcing element 121 can comprise an outer peripheral surface 126 and a geometric center 130.

  Reinforcement device 112 and reinforcement element 120 strengthen face element 111 while allowing face element 111 to flex, such as, for example, when face surface 214 (FIG. 2) impacts a ball (eg, a golf ball). Configured as. As a result, the face element 111 is thinned, allowing the mass from the face element 111 to be redistributed to other parts of the club head, but also making the face element 111 more flexible. Even buckling and failure can not occur under the resulting bending. Advantageously, the face element 111 can be thinner when implemented with the reinforcement device 112 and the reinforcement element 120 than when it is implemented without the reinforcement device 112 and the reinforcement element 120. The center of gravity, moment of inertia, and coefficient of restitution may be altered to improve the performance characteristics of the club head 100. For example, mounting the reinforcing device 112 and the reinforcing element 120 strikes the face surface 214 (FIG. 2) by increasing the launch angle of the golf ball (e.g., approximately one tenth to three tenths of a degree). The flight distance of the golf ball may increase, and the ball speed of the golf ball may increase, for example, approximately 0.1 miles per hour (mph) (0.161 kilometers per hour (kph) to approximately 3.0 mph (4.83 kph)). And / or reduce the spin of the golf ball (e.g., approximately 1 to 500 revolutions per minute). In these examples, the reinforcing device 112 and the reinforcing element 120 can have the effect of counteracting some of the gearing on the golf ball provided by the face surface 214 (FIG. 2).

  A test of a golf club comprising one embodiment of the golf club head 100 was performed. Overall, the test shows a higher moment of inertia about the x-axis and / or y-axis and a golf ball with a golf ball as compared to a standard reinforced hitting face and an iron golf club with a custom tuning port. Greater tolerance was shown, as indicated by the narrower statistical area that collides with the face of the head. In some tests, the moment of inertia around the x-axis increases by approximately 2%, the moment of inertia around the y-axis increases by approximately 4%, and / or the statistical area where the golf ball collides with the face of the golf club head Decreased by approximately 15 to 50 percent. In addition, an increase in the ball velocity of the golf ball, an increase in the launch angle of the golf ball, and / or a decrease in the spin of the golf ball were observed. As an example, when testing one embodiment of golf club 100 on a No. 5 iron golf club, the ball speed of the golf ball is increased by approximately 1.5 mph (2.41 kph) and the launch angle of the golf ball is approximately It was found that the spin of the golf ball was reduced by approximately 250 revolutions per minute (rpm), rising 0.3 degrees. In another example, when testing one embodiment of golf club 100 on a 7-iron golf club, the ball speed of the golf ball is increased by approximately 2.0 mph (3.22 kph) and the golf ball launch angle is increased. There was almost no change in the power, and it was found that the spin of the golf ball was reduced by about 450 rpm. As a further example, when testing one embodiment of golf club 100 on a wedge iron golf club, there is substantially no change in the ball velocity of the golf ball, and the launch angle of the golf ball is increased by approximately 0.1 degrees. It was found that the spin of the golf ball was reduced by about 200 rpm.

  In particular, in many instances, when the face element 111 comprises scoring lines 223 (FIG. 2) and the face element 111 is thinned without mounting the reinforcing device 112 and the reinforcing element 120, FIGS. 3 and 4 The buckling and breakage of the face element 111 is scored, particularly at the scoring line 223 (FIG. 2) proximal to the face center 216 (FIG. 2), as illustrated in FIG. 3 and described below with reference to FIGS. It may occur at the bottom of the ring line 223.

  The club head 100 with the stiffening device 112 may also have a uniform transition thickness 550 (FIG. 5) extending from the front end 203 to the bottom end 102. The uniform transition thickness 550 absorbs stress directed to the region between the front end 203 and the bottom end 102 of the club head 100 having the stiffening device 112. The uniform transition thickness 550 can range from approximately 0.20 to 0.80 inches. For example, a uniform transition thickness 550 may be approximately 0.20, 0.25, 0.30, 0.35 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, It can be 0.70, 0.75, or 0.80 inches.

  In particular, proceeding with the drawings, FIG. 3 shows a conventional club head 300 according to one embodiment. Club head 300 may be similar to club head 100 (FIGS. 1 and 2), but unlike club head 100, club head 300 includes reinforcing devices and elements on the back surface 315 of face element 311 of club head 300. There is no The club head 300 includes one or more scoring lines 323 on the face surface 314 of the club head 300. The back surface 315 may be similar to the back surface 115 (FIG. 1), and the face element 311 may be similar to or identical to the face element 111 (FIG. 1), and the face surface 314 is a face surface 214 (FIG. 1). 2) may be similar to, identical to, and / or scoring line 323 may be similar to, or identical to, scoring line 223 (FIG. 2). Furthermore, the absent reinforcement device may be similar to the reinforcement device 112 (FIG. 1) and the absent reinforcement element may be similar to the reinforcement element 120 (FIG. 1). 4 is a partial cross-sectional view of the club head 300 taken along section line 4-4 of FIG. 3 according to the embodiment of FIG. 3, with the face surface 314 of the club head 300 impacting a golf ball (not shown). It simulates where it is, and shows the appearance of stress-strain analysis where the resulting bending is tripled.

  As demonstrated in FIG. 4, the face element 311 behaves like a support beam and therefore comprises a neutral axis 436. The portion of the face element 311 between the face surface 314 and the neutral axis 436 is in compression, and the portion between the neutral axis 436 of the face element 311 and the rear surface 315 is in tension. The stress first increases at the face surface 314 and the back surface 315 and moves inward toward the neutral axis 436. However, unlike the support bars, the face element 311 also comprises a scoring line 323 in the portion of the face element 311 in compression. Excessive bending of the face element 311 may lead to mechanical yielding of the face element 311 at the bottom of the scoring line 323. Without the scoring line 323, the face element 311 would normally be expected to break first within the tensioned portion of the face element 311, but the scoring line 323 would first become compressed in the face element 311. Causes damage in certain parts. That is, after face element 311 breaks at scoring line 323, the remaining portion of face element 311 may reach a stress level high enough to cause a break. Iron type club heads may be more susceptible to breakage at scoring line 323. This is because an iron-type club head tends to be flat at the face surface 314 unlike a wood-type golf club head which tends to be convex at the face surface 314. As a result, even if a wood-type golf club head bends at the face surface 314, the face surface 314 may still curve somewhat outward. On the other hand, when an iron-type golf club head bends at the face surface 314, the face surface 314 bends in a concave shape, which increases the degree of compression at the portion of the face element 311 that is undergoing compression. There is.

  Returning now to FIG. 1 and FIG. 2, the implementation of the augmentation device 112 and the augmentation element 120 may be closer to the face center 216 (FIG. 2) of the scoring lines 223, in particular within the scoring line 223 (FIG. 2). Local bending within the temporal scoring line may be enhanced, as well as an increase in overall bending within face element 111 may be possible. The reinforcing device 112 and the reinforcing element 120 increase these benefits to the local thickness of the face element 111, whereby the face element 111 is stiffer and harder at their location. It can be brought about by In fact, the reinforcing device 112 and the reinforcing element 120 can serve to pull the neutral axis of the face element 111 away from the face surface 214 (FIG. 2) and closer to the back surface 115.

  On the other hand, the reinforcing device 112 and the reinforcing element 120 can further provide these benefits when implemented as a closed structure (eg, one or more looped ribs). Such a closed configuration is capable of resisting deformation as a result of circumferential (i.e., hoop) stresses acting on the stiffening device 112 and the stiffening element 120. For example, circumferential (ie, hoop) stresses acting on the stiffening device 112 and the stiffening element 120 prevent opposite sides of the stiffening device 112 and the stiffening element 120 from rotating away from one another, thereby reducing bending. obtain.

  In addition, the stiffening device 112 and the stiffening element 120 absorb a substantial portion of the stress on the club head 100 at the time of impact, such that the stress at the time of impact may include the club It is not absorbed by the other parts of the head 100. Directing the stress in the direction of the stiffening device 112 and the stiffening element 120 may be compared to the stiffening device and the club head 300 lacking the stiffening element, or compared to a club head having no or less stiffening device 112. To improve the durability of the face element 111 and the club head 100.

  In implementation, the reinforcement element 120 (e.g., the reinforcement element 121) may be any suitable shape (e.g., multiple) configured to perform the desired function of the reinforcement device 112 and / or the reinforcement element 120 described above. It may be implemented in a square, an oval, a circle etc.) and / or any suitable configuration. Furthermore, when the reinforcement element 120 comprises a plurality of reinforcement elements, two or more of the reinforcement elements of the reinforcement elements 120 may be similar to another and / or reinforcement of two or more of the reinforcement elements 120. Elements may be different from one another.

  In some embodiments, reinforcement element 120 (eg, reinforcement element 121) may be symmetrical about x-axis 107 and / or y-axis 108. If the reinforcing element 120 (e.g., reinforcing element 121) is implemented in an oblong shape, in many embodiments the largest dimension (e.g., the major axis) of the reinforcing element is parallel to one of x-axis 107 or y-axis 108 and And / or can be collinear. However, in other embodiments, the largest dimension (eg, the major axis) may be angled with respect to the x-axis 107 and / or the y-axis 108 as desired. Furthermore, in many embodiments, the reinforcement element 120 (eg, reinforcement element 121) may be centered at the z-axis 109, but in some embodiments one or more of the reinforcement elements 120 (eg, reinforcement The element 121) is offset from the center of the z-axis 109, for example, it is offset to one or two of the top end 101, the bottom end 102, the toe end 105, and the heel end 106. It can be done.

  In many embodiments, each reinforcing element (eg, reinforcing element 121) of reinforcing elements 120 can comprise one or more looped ribs 127 (eg, looped ribs 122). In particular, the reinforcement element 121 can comprise a looped rib 122. In these or other embodiments, where the looped ribs 127 comprise a plurality of looped ribs, the looped ribs 127 can be concentric with one another about a point and / or axis (e.g. z-axis 109) . In other embodiments, if the looped rib 127 comprises a plurality of looped ribs, two or more of the looped ribs 127 can be non-concentric. Furthermore, in these or other embodiments, two or more of the looped ribs 127 can overlap. On the other hand, in these embodiments, the looped rib 122 can comprise an oval looped rib, and in some of these embodiments, the looped rib 122 can comprise a circular looped rib. As mentioned above, it may be advantageous to implement the stiffening element 120 as a looped rib 127 due to the circumferential (eg hoop) stresses provided by the closed structure of the looped rib 127. In many embodiments, one or more of the looped ribs 127 (or each of the looped ribs 127) is a continuous closed loop.

  In these or other embodiments, each looped rib of looped rib 127 comprises an outer peripheral surface and an inner peripheral surface. On the other hand, in these embodiments, the outer peripheral surface of each reinforcing element (e.g. reinforcing element 121) comprises the outer peripheral surface of the looped rib (e.g. looped rib 122) corresponding to the reinforcing element. For example, the looped rib 122 can comprise an outer peripheral surface 128 and an inner peripheral surface 129. Further, the inner peripheral surface 129 can be sharp and substantially orthogonal to the rear surface at rib height 540 (FIG. 13).

  In some embodiments, one or more outer peripheral surfaces of reinforcing element 120 (eg, outer peripheral surface 126 of reinforcing element 121) may be filleted to back surface 115. In these or other embodiments, one or more inner peripheral surfaces of the looped rib 127 (eg, the inner peripheral surface 129 of the looped rib 122) may be filleted to the back surface 115. When the outer peripheral surface of the reinforcing element 120 (e.g. the outer peripheral surface 126 of the reinforcing element 121) is filleted to the rear surface 115, a smooth transition of the reinforcing element 120 (e.g. the outer peripheral surface 126 of the reinforcing element 121) to the rear surface 115 Can be possible. Further, filleting the outer peripheral surface of the reinforcing element 120 (eg, the outer peripheral surface 126 of the reinforcing element 121) with respect to the rear surface 115 directs the stress from the impact to the reinforcing element 120 and from the face surface 214. It can be made to leave. On the other hand, the outer peripheral surface of the reinforcing element (eg, the outer peripheral surface 126 of the reinforcing element 121) or the inner peripheral surface of the looped rib 127 (eg, the inner peripheral surface 129 of the looped rib 122) is approximately 0.012 cm It can be filleted to the back surface 115 using a fillet 117 having a radius of meters or more. For example, in some embodiments, the fillet 117 of the outer peripheral surface 126 to the back surface 115 is about 0.012 centimeters to about 2.0 centimeters, about 0.50 centimeters to about 3.0 centimeters, Or can range from about 1.0 centimeters to about 4.0 centimeters. For further example, in some embodiments, the fillet 117 of the inner peripheral surface 129 relative to the back surface 115 may be about 0.012 centimeters to about 2.0 centimeters, about 0.50 centimeters to about 3.00 It can be in the range of centimeters, or about 1.0 centimeters to about 4.0 centimeters.

  In some embodiments, the outer peripheral surface of the reinforcing element can be filleted directly to the back surface 115. In these embodiments, the face thickness gradually decreases along the fillet 117 from the face thickness at the rib height 540 to the face thickness at the back surface 115.

  In some embodiments, the club head 100 can further include a lip 552 on the back surface 115 of the club head 100. Referring to FIGS. 15-17, in the illustrated embodiment, a lip 552 extends from the heel end 106 to the toe end 105 around the reinforcing element 120 of the club head 100. In these or other embodiments, the fillet 117 on the outer peripheral surface of the stiffening element 120 can transition to the lip 552, so the face thickness is minimal from the face thickness at the rib height 540 The thickness 544 gradually decreases along the fillet 117 and then gradually increases from the minimum thickness 544 to the face thickness at the lip height 554. In these embodiments, the minimum thickness 544 between the reinforcing element 120 and the lip 552 can be greater than the central thickness 537, and the minimum thickness 544 between the reinforcing element 120 and the lip 552 is The center thickness 537 can be approximately equal, or the minimum thickness 544 between the stiffening element 120 and the lip 552 can be less than the center thickness 537. In the embodiment shown in FIGS. 15-16, the minimum thickness 544 between the stiffening element 120 and the lip 552 is greater than the central thickness 537. In the embodiment shown in FIG. 17, the minimum thickness 544 between the stiffening element 120 and the lip 552 is approximately equal to the central thickness 537.

  In many embodiments, the minimum thickness 544 between the stiffening element 120 and the lip 552 corresponds to the bending of the faceplate and the ball speed. As the minimum thickness 544 between the reinforcing element 120 and the lip 552 decreases, the outer peripheral surface of the reinforcing element 120 may further flex during impact with the golf ball. The increased bending of the outer peripheral surface of the reinforcing element 120 upon impact can increase the deflection of the face plate to increase energy transfer to the golf ball and increase the ball velocity. For example, the golf club head 100 shown in FIG. 17 having a reinforcement element 120 substantially equal to the center thickness 537 and a minimum thickness 544 between the lip 552 may have a reinforcement element 120 greater than the center thickness 537 and the lip This results in ball speeds up to one mile per hour (mph) faster than the club head 100 shown in FIGS. 15-16 with a minimum thickness 544 between 552.

  In some embodiments, where the stiffening element 121 comprises a looped rib 122, the looped rib 122 can comprise a cavity 131. In another embodiment, when the reinforcing element 121 comprises a looped rib 122, the looped rib 122 does not comprise a cavity 131. In the embodiment without the cavity 131, the central thickness 537 (FIGS. 5 and 13) can be larger than in the embodiment with the cavity 131, and from the face surface 214 (FIG. 2) At rib height 542 (FIGS. 5 and 13) which can be measured to the distal end (eg, center thickness 537 (FIG. 5) and rib height 542 (FIG. 5) can be the combined distance) Or less than the face thickness. The cavity 131 is defined by the inner peripheral surface 129 and the rear surface 115. In some embodiments, the cavity 131 can be a central cavity. In many embodiments, the cavity 131 can be free of any content, such as, for example, a weighted insert. In another embodiment, the cavity 131 can receive an insert 805, as shown in FIGS.

  By mounting the reinforcing device 112 and the reinforcing element 120, as discussed in some detail above, the face surface 214 (FIG. 2) is proximal to the face rim 217 (FIG. 2) (eg, the face rim 217). (E.g., at face center 216) may be closer (i.e. thinner) to rear surface 115 than at face center 216 (FIG. 2). In some embodiments, portions of the face surface 214 (FIG. 2) proximal to the face center 216 (FIG. 2) interface the surface area of the face surface 214 with the face center 216 (FIG. 2), And may refer to a portion that represents approximately 1 percent, 2 percent, 3 percent, 5 percent, 10 percent, or 20 percent of the total surface area of the face surface 214. In these or other embodiments, that portion of the surface area of face surface 214 (FIG. 2) may correspond to the portion of the surface area of back face 115 covered by reinforcing elements 121. On the other hand, in some embodiments, portions of the face surface 214 (FIG. 2) proximal to the face peripheral edge 217 (FIG. 2) include the face peripheral edge 217 of the face surface 214 and the face peripheral edge 217 (FIG. 2) inserted boundaries located approximately 0.10 cm, 0.20 cm, 0.25 cm, 0.50 cm, 1.00 cm or 2.00 cm from the figure 2) It can point to the area surrounded by.

  5 and 13 show cross-sectional views along section line 5-5 of FIG. 2 of the club head 100 according to the embodiment of FIG. The club head 100 can have a center thickness 537. Center thickness 537 may refer to the distance from face center 216 (FIG. 2) to back center 118 (FIG. 1). In many embodiments, center thickness 537 may be approximately 0.150 cm to approximately 0.300 cm. In some embodiments, the center thickness 537 can be less than 0.300 cm, less than 0.255 cm, less than 0.250 cm, less than 0.205 cm, less than 0.200 cm, or less than 0.155 cm. In some embodiments, the center of reinforcement element 120 may be at least partially filled. For example, the center of reinforcing element 120 may be filled with damping material or vibration damping features (eg, insert 805 (FIG. 8)) or other materials. In many embodiments, center thickness 537 can be thinner than the face thickness at rib height 540. In other embodiments, center thickness 537 can be approximately equal to the face thickness at rib height 540. The face thickness at rib height 540 may be rib height 540 plus center thickness 537. In many embodiments, the outer face thickness 542 of the stiffening element 120 can be thicker than the central thickness 537 but thinner than the face thickness at the rib height 540. In other embodiments, face thickness 542 may be the same as center thickness 537.

  In some embodiments, the face thickness at rib height 540 can be approximately 0.30 cm to approximately 0.70 cm. In some embodiments, the face thickness at rib height 540 can be approximately 0.30 cm to approximately 0.50 cm. In some embodiments, the face thickness at rib height 540 can be approximately 0.40 cm to approximately 0.60 cm. In some embodiments, the face thickness at rib height 540 can be approximately 0.50 cm to approximately 0.70 cm. In some embodiments, the face thickness at rib height 540 can be greater than 0.30 cm, greater than 0.40 cm, greater than 0.50 cm, or greater than 0.60 cm.

  In some embodiments, the outer face thickness 542 of the stiffening element 120 can vary. FIGS. 15-16 show the top 545 of the faceplate outside of the reinforcing element 120 with the top thickness 546 and the bottom 547 of the outside faceplate of the reinforcing element 120 with the bottom thickness 548 . In some embodiments, the top thickness 546 may be the same as the bottom thickness 548 (FIGS. 5 and 13). In these embodiments, center thickness 537 may be less than top thickness 546 and bottom thickness 548, and top thickness 546 and bottom thickness 548 may be less than the face thickness at rib height 540. It can be made thinner. In some embodiments, top thickness 546 may be different from bottom thickness 548 (FIGS. 15-16). For example, in some embodiments, center thickness 537 can be less than top thickness 546, top thickness 546 can be less than bottom thickness 548, and bottom thickness 548 Can be thinner than the face thickness at rib height 540. For further examples, in some embodiments, the top thickness 546 can be less than the center thickness 537, the center thickness 537 can be less than the bottom thickness 548, and the bottom thickness The 548 can be thinner than the face thickness 540 at rib height 540.

  In many embodiments, the outer face thickness 542 of the reinforcing element 120 can be about 0.150 cm to about 0.300 cm. In some embodiments, the outer face thickness 542 of the reinforcing element 120 is less than 0.300 cm, less than 0.255 cm, less than 0.250 cm, less than 0.205 cm, less than 0.200 cm, or less than 0.155 cm. can do. In many embodiments, the top thickness 546 can be approximately 0.150 cm to approximately 0.300 cm. In some embodiments, the top thickness 546 can be less than 0.300 cm, less than 0.255 cm, less than 0.250 cm, less than 0.205 cm, less than 0.200 cm, or less than 0.155 cm. In many embodiments, the bottom thickness 548 can be approximately 0.150 cm to approximately 0.300 cm. In some embodiments, the bottom thickness 548 can be less than 0.300 cm, less than 0.255 cm, less than 0.250 cm, less than 0.205 cm, less than 0.200 cm, or less than 0.155 cm.

  In many embodiments, the outer face thickness of the reinforcing element 120 without the need for a backing material to support (eg, without the use of a filler material such as an elastomer located at the rear of the face plate). 542 may be approximately 0.150 cm to approximately 0.300 cm, and center thickness 537 may be approximately 0.150 cm to approximately 0.300 cm. For example, the outer face thickness 542 of the stiffening element 120 may be from about 0.150 cm to about 0.20 cm without having an elastomer or other flexible material located at the back of the outer face thickness 542 of the stiffening element 120. It can be 300 cm. In another example, center thickness 537 can be approximately 0.150 cm to approximately 0.300 cm without having an elastomer or other flexible material located at the back of face center thickness 537.

  Typically, the face plate of a golf club head is designed to maximize ball speed (e.g., by reducing face plate thickness) for individual swing speed requirements. In general, since the force at impact with a club head decreases with the swing speed, the face plate thickness (e.g., for a female golf club head as compared to a male golf club head) has a low swing speed. May be reduced with durability requirements. For example, a club head having low swing speed durability requirements has a lower center thickness 537, lower face thickness at rib height 540, lower top compared to club heads having higher swing speed durability requirements. It can have a thickness 546, a low bottom thickness 548, or any combination of the thickness reductions mentioned above. In some embodiments, center thickness 537 can be approximately 0.150 cm to approximately 0.250 cm, and top thickness 546 can be approximately 0.150 cm to approximately 0.250 cm, and The bottom thickness 548 can be approximately 0.150 cm to approximately 0.250 cm, and the club head 100 can be less than 100 miles per hour (mph) (160.9 kilometers per hour, kph), 90 mph (144.8 kph) Allows to withstand swing speeds of less than 80 mph (128.7 kph), less than 70 mph (112.6 kph), or less than 60 mph (96.6 kph). In some embodiments, center thickness 537 can be about 0.200 cm to about 0.300 cm, and top thickness 546 can be about 0.200 cm to about 0.300 cm, and The bottom thickness 548 can be approximately 0.200 cm to approximately 0.300 cm, and the club head 100 is less than 130 mph (209.2 kph), less than 120 mph (193.1 kph), less than 110 mph (177.0 kph) , Able to withstand swing speeds less than 100 mph (160.9 kph) or less than 90 mph (144.8 kph).

  In many embodiments, scoring line 223 may have a depth of about 0.030 cm to about 0.060 cm. In some embodiments, scoring line 223 may have a depth of less than 0.060 cm, less than 0.055 cm, less than 0.050 cm, less than 0.045 cm, less than 0.040 cm, or less than 0.035 cm. it can. For example, in the embodiment shown in FIGS. 15-16, scoring line 223 has a depth of approximately 0.046 cm. As described herein, measurements for center thickness 537, outer face thickness 542 for reinforcement element 120, top thickness 546, and bottom thickness 548 are made in the area of the face plate without scoring lines . Thus, the faceplate thickness measured in scoring line 223 is greater than the associated faceplate thickness measured outside scoring line 223 in the same region of the faceplate or next to scoring line 223 , (By the depth of the scoring line) lower.

  In some embodiments, the width of the rib can vary throughout the looped rib 122 (FIG. 1), and in some embodiments, the looped rib 122 (FIG. 1) and / or the inner peripheral surface 129 (FIG. 1) may comprise a maximum rib span 538. Maximum rib span 538 is the maximum distance measured parallel to the rear surface 115 (FIG. 1) from one side of the inner circumferential surface 129 (FIG. 1) to the opposite side of the inner circumferential surface 129 (FIG. 1) facing Can point to Thus, when the looped rib 122 (FIG. 1) comprises an oval looped rib, the largest rib span 538 can refer to the major axis of the inner peripheral surface 129 (FIG. 1). Furthermore, when the looped rib 122 (FIG. 1) comprises a circular looped rib, the largest rib span 538 can refer to the diameter of the inner peripheral surface 129 (FIG. 1). Notably, in many embodiments, the largest rib span 538 may be measured at the midpoint of the inner peripheral surface 129 (FIG. 1).

  In some embodiments, the maximum rib span 538 can be approximately 0.609 cm to approximately 1.88 cm. In some embodiments, the maximum rib span 538 can be approximately 1.0 cm. In some embodiments, if the maximum span 538 is too large (eg, greater than approximately 1.88 centimeters), the looped rib 122 (FIG. 1) scores closest to the face center 216 (FIG. 2) It may be insufficient to strengthen the ring line 223 (FIG. 2). On the other hand, in these or other embodiments, if the maximum span 538 is too small (eg, less than approximately 0.609 centimeters), the looped rib 122 will score closest to the face perimeter 217 (FIG. 2) It may be insufficient to strengthen line 223 (FIG. 2). In general, these upper and lower limits for maximum rib span 538 may be a function of the size of face element 111 (FIG. 1). In some embodiments, more than one rib 621 and 641 may be present, for example as shown in FIG. In this case, the inner or outer diameter of the larger rib span or rib 641 (FIG. 6) may be greater than 1.88 centimeters, and the inner or outer diameter of the smaller rib span or rib 621 (FIG. 6) The diameter can be less than 0.609 centimeters.

  Additionally, looped rib 122 (FIG. 1) can have a rib thickness 539. The rib thickness 539 is the back surface 115 (FIG. 1) between the inner peripheral surface 129 (FIG. 1) of the looped rib 122 (FIG. 1) and the outer peripheral surface 128 (FIG. 1) of the looped rib 122 (FIG. 1). It can refer to the distance measured parallel to FIG. In some embodiments, the thickness of the looped rib 122 (FIG. 1) can vary throughout the looped rib 122 (FIG. 1), and the rib thickness 539 is of the looped rib 122 (FIG. 1). Maximum rib thickness can be made. In many embodiments, the rib thickness 539 can be approximately 0.050 cm to approximately 1.50 cm. In some embodiments, the rib thickness 539 can be approximately 0.05 cm. In some embodiments, rib thickness 539 can be approximately 0.25 centimeters or greater. In some embodiments, rib thickness 539 can be approximately 0.50 centimeters. In some embodiments, rib thickness 539 can be approximately 0.75 centimeters. In some embodiments, rib thickness 539 can be approximately 1.00 centimeters. In some embodiments, rib thickness 539 can be approximately 1.25 centimeters. In some embodiments, rib thickness 539 can be approximately 1.50 centimeters. In various embodiments, where the looped rib 127 (FIG. 1) comprises a plurality of looped ribs, two or more of the looped ribs 127 (FIG. 1) comprise the same rib thickness And / or two or more of the looped ribs 127 (FIG. 1) can have different rib thicknesses. Notably, in many embodiments, rib span 539 may be measured at the midpoint of inner circumferential surface 129 (FIG. 1) and / or outer circumferential surface 128 (FIG. 1).

  Still further, looped rib 122 (FIG. 1) can have a rib height 540. The rib height 540 is the central position farthest from the rear surface 115 (FIG. 1) from the rear surface 115 (FIG. 1), that is, the outer peripheral surface 128 (FIG. 1) is the inner peripheral surface 129 (FIG. 1). It can refer to the vertical distance to where it touches. In these or other embodiments, the rib height 540 can be approximately 0.3048 centimeters or greater. In some embodiments, the rib height 540 can be approximately 0.1778 cm to approximately 0.3048 cm. In some embodiments, the rib height 540 can be approximately 0.17 cm, 0.20 cm, 0.23 cm, 0.26 cm, 0.29 cm, or 0.30 cm. In many embodiments, the rib height 540 can be approximately 0.512 cm or less. In some embodiments, the height of the looped rib 122 (FIG. 1) can vary throughout the looped rib 122, and the rib height 540 is the maximum rib height of the looped rib 122 (FIG. 1) can do. In various embodiments, when the looped rib 127 (FIG. 1) comprises a plurality of looped ribs, two or more looped ribs of the looped rib 127 (FIG. 1) comprise the same rib height And / or two or more of the looped ribs 127 (FIG. 1) can have different rib heights.

  In many embodiments, center thickness 537, maximum rib span 538, rib thickness 539, and / or rib height 540 may vary depending on one or more of each other. For example, center thickness 537 can be a function of rib thickness 539 and rib height 540. That is, if rib thickness 539 and / or rib height 540 is increased, center thickness 537 may be reduced and vice versa. On the other hand, rib thickness 539 and rib height 540 may vary from one another. For example, increasing rib thickness 539 may allow for a reduction in rib height, and vice versa.

  Turning now to FIGS. 1 and 2, in many embodiments, the peripheral wall element 113 can comprise a first peripheral wall 124 and a second peripheral wall 125. The peripheral wall element 113 is (i) at least partially (eg, entirely around) the rear peripheral edge 119 of the rear surface 115, (ii) outward from the rear surface 115 towards the rear end 104, and (iii) ) Extends away from the front end 203 (FIG. 2). On the other hand, the first peripheral wall 124 may extend along the rear peripheral edge 119 of the rear surface 115 at the top end 101, and the second peripheral wall 125 may be behind the rear surface 115 at the bottom end 102. It can extend along the rim 119. In many embodiments, the reinforcement device 112 and the reinforcement element 120 are spaced apart from and / or from the peripheral wall element 113 at the rear surface 115 such that the reinforcement device 112 and the reinforcement element 120 float at the rear surface 115 Located away. Floating the reinforcement device 112 and the reinforcement element 120 may allow the face element 111 to flex approximately symmetrically around the face center 216 (FIG. 2).

  In many embodiments, the club head body 110 includes (i) an upper surface 132 at least partially at the first peripheral wall 124 and / or the upper end 101, and / or (ii) at least partially the second. A sole surface 133 can be provided at the peripheral wall 125 and / or the bottom end 102. Thus, in some embodiments, the first peripheral wall 124 can constitute at least a portion of the upper surface 132 and / or the second peripheral wall 125 is at least a portion of the sole surface 133 Can be configured. Further, the top surface 132 can contact the face surface 214 (FIG. 2) at the top end 101 and / or the sole surface 133 can contact the face surface 214 (FIG. 2) at the bottom end 102.

  In some embodiments, at least a portion of the second peripheral wall 125 has a thickness substantially equal to the face element 111 at the face periphery 217 (FIG. 2) and / or proximal to the face periphery 217, Or it can be thinner than that. For example, the second peripheral wall 125 may be a portion of the second peripheral wall 125 proximal to the face peripheral portion 217 (FIG. 2) (ie, where the second peripheral wall 125 contacts the face element 111 Can be thinner than or equal to the face element 111 proximal to and / or to the face rim 217. Mount this portion of the second peripheral wall 125 to be equal to or thinner than the face element 111 proximal to the face peripheral edge 217 (FIG. 2) and / or to the face peripheral edge 217 Then, when the face surface 214 (FIG. 2) impacts the golf ball, the formation of a stress concentration portion in the second peripheral wall portion 125 can be prevented.

  The back surface 115 comprises a first back surface and a second back surface. The first back surface can refer to the portion of the back surface 115 covered by the peripheral wall element 113, and the second back surface can refer to the remaining portion of the back surface 115. In many embodiments, the reinforcing elements 121 (e.g., the looped ribs 122) have about 25 percent or more of the surface area of the second back surface of the back surface 115 and / or about 40 of the surface area of the second back surface of the back surface 115. It can cover less than a percent. In other embodiments, the reinforcing elements 121 (e.g., the looped ribs 122) can cover approximately thirty percent or more of the surface area of the second back surface of the back surface 115. In some embodiments, the reinforcing elements 121 (eg, the looped ribs 122) provide approximately 25 percent, 28 percent, 31 percent, 34 percent, 37 percent, or 40 percent of the surface area of the second back surface of the back surface 115 It can be covered.

  Additionally, the club head body 110 can comprise a hosel 134 or any other suitable mechanism (eg, a bore) for receiving the shaft and coupling it to the club head 100 and / or the club head body 100. . Other suitable mechanisms may be similar to hosel 134 in one or more points.

  On the other hand, generally speaking, the hosel 134 may be located at or near the heel end 106. Although the shaft is not shown in the drawings, hosel 134 may be configured to receive a shaft, such as, for example, a golf club shaft (i.e., through the opening of hosel 134). Thus, hosel 134 can receive a shaft, and when hosel 134 receives a shaft, the shaft is coupled (e.g., permanently or removably) to club head 100 and / or club head body 110 Can make it possible.

  Furthermore, in some embodiments, the second peripheral wall 125 can comprise a weight cavity 135. In these embodiments, weight cavity 135 may be configured to receive a removable or permanent weighting insert. The loading insert may be disposed in the weight cavity 135 such that the loading insert is closer to the bottom end 102 of the club head 100 than the center of gravity of the club head 100. In other words, the weighting insert may be disposed in the weight cavity 135 such that the center of gravity of the club head 100 is closer to the upper end 101 of the club head 100 than the weighting insert. The weighting insert may be configured to change the center of gravity of the club head 100.

  Turning now to the drawings, FIG. 6 shows a top, back, toe side view of a club head 600 according to one embodiment. 7 shows a top, front, toe side view of the club head 600 according to the embodiment of FIG.

  Club head 600 may be similar to or identical to club head 100 (FIG. 1). Thus, the club head 600 can comprise a reinforcement device 612, which can comprise a reinforcement element 620. Reinforcement device 612 may be similar to or identical to reinforcement device 112 (FIG. 1), and reinforcement element 620 may be similar to or identical to reinforcement element 120 (FIG. 1).

  The reinforcement element 620 can comprise a first reinforcement element 621 and a second reinforcement element 641. The first reinforcing element 621 and / or the second reinforcing element 641 may each be similar to the first reinforcing element 121 (FIG. 1). Thus, the first reinforcing element 621 can comprise a first looped rib 622 and the second reinforcing element 641 can comprise a second looped rib 642. The first looped rib 622 and / or the second looped rib 642 may each be similar to the looped rib 122 (FIG. 1).

  In these embodiments, the first reinforcing element 621 and / or the first looped rib 622 may comprise circular looped ribs and the second reinforcing element 622 and / or the second looped rib 642 Can comprise an oval looped rib. The second reinforcing element 622 and / or the second looped rib 642 can surround the first reinforcing element 621 and / or the first looped rib 622. In many embodiments, the major axis of the elliptical looped rib can be substantially parallel to the x-axis of the club head 600. The x-axis may approximate or be identical to the x-axis 107 (FIG. 1). In the same or different embodiments, the minor axis of the oval looped rib can be non-parallel to the y-axis of the club head 600. The y-axis may approximate or be identical to the y-axis 108 (FIG. 1).

  The club head 600 with the stiffening device 612 can also have a uniform transition thickness 550 (not shown) extending from the front end 203 to the bottom end 102. The uniform transition thickness 550 absorbs stress directed to the area between the front end 203 and the bottom end 102 of the club head 600 having the stiffening device 612. The uniform transition thickness 550 can range from approximately 0.20 to 0.80 inches. For example, a uniform transition thickness 550 may be approximately 0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65 , 0.70, 0.75, or 0.80 inches.

  In another embodiment, FIG. 8 shows a side view along line 5-5 of FIG. 2 of a club head 800 according to another embodiment of FIG. The club head 800 shown in FIG. 8 shows an insert 805 in the cavity 131. FIG. 9 shows a top, back, heel side view of the club head 800 according to the embodiment of FIG. In some embodiments, the insert 805 can be a vibration damping feature. The insert 805 can be a non-metallic material, an elastomeric material such as polyurethane, or another material such as a foam. The insert 805 can be used to adjust the sound and feel of the club head 800. By absorbing or damping vibrations, the insert 805 improves the feel of the club head 800. In addition, the insert 805 absorbs the sound of the golf ball hitting the face, which makes the feel of the head of the golf club 800 less hollow and more solid. In a further embodiment, the cavity 131 can be at least partially covered by a badge (not shown). The badge may be separate from the insert 805 or integral with the insert 805. In other embodiments, the badge can be integral with a reinforcing element, such as reinforcing element 120 (FIG. 1).

  In some cases, the weight of the insert 805 can be less than about 3 g so as not to significantly affect the swing weight or center of gravity of the club head 800. In other embodiments, the weight of the insert 805 may be greater than about 3 g, such as about 5 g to about 10 g, and may contribute significantly to the swing weight and / or center of gravity of the club head 800. In some embodiments, the insert 805 is attached to the cavity 131 using an epoxy adhesive, a visco-elastic foam tape, a vibration damping feature, or a high strength tape such as 3MTM VHBTM tape. It can be done. In other embodiments, the insert 805 can be poured directly into the cavity 131 and glued. The badges can be adhered using similar adhesives. In some embodiments, the inserts 805 or badges may be coplanar with the looped ribs 122 (FIG. 1) at the top of the rib height 540, or when they are fully assembled, the ribs It may be below height 540.

  In some embodiments, at least one vibration damping feature, such as an insert 805 (FIG. 8), may be disposed on the rear surface 115 (FIG. 1) of a golf club head such as the golf club head 800. The vibration damping feature can produce a more desirable sound from the golf club head 800 on impact. The thin face elements 111 (FIG. 1) of the golf club head 800 can produce undesirable sounds when striking a golf ball. The vibration damping features reduce vibration, which may result in a more desirable sound upon impact by the thin face element 111 (FIG. 1). The vibration damping component can increase the confidence of the user in use by providing more desirable noise. The vibration damping feature can also reduce the vibration impact that a golf club user feels when striking a golf ball. Additionally, the vibration damping features can reduce vibration fatigue to reduce wear on various features such as, but not limited to, the cavity 131 and the weight cavity 135 (FIG. 1). The reduction in vibrational fatigue may further reduce the risk of loosening or displacing components such as, but not limited to, inserts 805 in cavity 131 and inserts in weight cavity 135 (FIG. 1). Reducing vibration fatigue may extend the performance life of the golf club head 800.

  As seen in FIG. 12, in a further embodiment, the vibration damping feature may comprise at least one layer of visco-elastic damping material. The damping material can comprise a pressure sensitive visco-elastic acrylic polymer and an aluminum foil, making up a damping foil 1202, such as 3MTM damping foil tape 2552. The damping foil 1202 can comprise an adhesive layer. In one embodiment, the vibration damping feature can comprise at least one visco-elastic adhesive layer 1203, which is an epoxy adhesive, visco-elastic foam tape, and / or 3MTM VHBTM A composition comprising various layers of at least one layer of a high strength tape such as a tape can be provided. In some embodiments, the vibration damping feature can comprise various layer combinations of at least one of viscoelastic adhesive 1203, damping foil 1202, and / or badge 1201.

  Returning to FIG. 8, in some embodiments, the vibration damping feature may be disposed on the back surface 115 (FIG. 1) of a golf club head, such as a golf club head 800, comprising a back surface material such as steel 1204. . In another embodiment, the vibration damping features may be disposed in the cavity 131 of the golf club head 800 or above or below the insert 805. The vibration damping features may be located at various locations on the back surface 115 (FIG. 1) of the golf club head 800. Generally, the vibration damping features are at least partially located on the back surface 115 (FIG. 1) below the outline of the badge. In some embodiments, the vibration damping feature is disposed below the entire outline of the badge. In other embodiments, the vibration damping features are at least partially disposed only under specific areas, such as aluminum areas or elastomeric areas, of the outline of the badge. The vibration damping features may be disposed only under at least a portion of the peripheral area of the outline of the badge. In some embodiments, the vibration damping feature may be at least partially disposed within the cavity 131 of the golf club head 800. The vibration damping features may be at least partially disposed in the cavity 131 above or below the insert 805. In many embodiments, the arrangement of the vibration damping feature on the golf club head 800 is such that the foil at least partially under the badge, at least partially over the insert 805, the weight cavity 135 (FIG. And / or various combinations disposed at least partially within and / or within cavity 131). In some embodiments, the vibration damping feature is disposed such that it covers at least 10 percent of the surface area of the back surface 115 (FIG. 1). In other embodiments, the vibration damping feature comprises at least 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, of the surface area of the back surface 115. It can cover 95 or 100 percent.

  The club head 800 with the insert 805 can also have a uniform transition thickness 550 (FIG. 8) extending from the front end 203 to the bottom end 102. The uniform transition thickness 550 absorbs stress directed to the region between the front end 203 and the bottom end 102 of the club head 800 with the insert 805. The uniform transition thickness 550 can range from approximately 0.20 to 0.80 inches. For example, a uniform transition thickness 550 may be approximately 0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65 , 0.70, 0.75, or 0.80 inches.

  In another embodiment, FIG. 18A is a side cross-sectional view of a club head 900. Club head 900 may be similar to club head 100. The club head 900 comprises a club head body 910 comprising an upper end 901, a bottom end 902, a toe end 905, a heel end 906, a front end 903, a rear end 904 and a face element 911. The face element 911 comprises a face surface 914 located on the front end 903 (ie, a striking face or plate) and a rear surface 915 located on the rear end 904. The back surface 915 comprises a back center 918.

  The top end 901 of the club head body 910 comprises a top rail 924. The top rail 924 extends in an arc from the front end 903 to the rear end 904 and the bottom end 902. Top rail 924 extends from toe end 905 to heel end 906 along upper end 901. A recess in the curve located between the back surface 915 of the face element 911 and the top rail 924 defines an undercut 950. In many embodiments, the undercut 950 extends from the toe end 905 to the heel end 906 along the top rail 924. In other embodiments, the undercut 950 may be along the top rail 924 and into a portion of the toe end 905, into a portion of the heel end 906, or a portion of the toe end 905 and the heel It can extend into the combination of parts of the end 906. Undercut 950 can also be applied to club heads 300, 600, and 800.

  The face element 911 further comprises an augmentation device 912 similar to the augmentation devices 112, 612. The reinforcement device 912 is located on the back surface 915 generally at the back center 918. The reinforcement device 912 extends from the back surface 915 away from the front end 903. The enhancement device 912 comprises one or more enhancement elements 920. In many embodiments, each reinforcing element of the plurality of reinforcing elements 920 comprises an outer peripheral surface 926, an inner peripheral surface 929, and a geometric center. The reinforcement element 920 can further comprise a looped rib 927. In these or other embodiments, the geometric center or centers of one or more of the reinforcing elements 920 can be at the back center 918 of the back surface 915.

  In some embodiments, the looped ribs 927 may comprise a plurality of looped ribs, and each looped rib 927 may be concentric with one another. In other embodiments, when the looped ribs 927 comprise a plurality of looped ribs, two or more of the looped ribs 927 may be non-concentric. Further, in these or other embodiments, two or more of the looped ribs 927 may overlap. On the other hand, in some embodiments, the looped rib 927 may comprise an oval looped rib, and in other embodiments the looped rib 927 may comprise a circular looped rib.

  In implementation, the stiffening element 920 and the looped rib 927 may be any suitable shape (e.g., multiple) configured to perform the intended function of the stiffening device 912 and / or the stiffening element 920 described above. It may be implemented in a square, an oval, a circle etc.) and / or any suitable configuration. Furthermore, when the reinforcement element 920 comprises a plurality of reinforcement elements, two or more of the reinforcement elements of the reinforcement elements 920 may be similar to another and / or two of the reinforcement elements 1520 The above strengthening elements may be different from one another.

  In some embodiments, one or more outer peripheral surfaces 926 of reinforcing element 920 may be filleted to the back surface 915. In these or other embodiments, one or more inner circumferential surfaces 929 of looped rib 927 may be filleted to the back surface 915. The filleting of the outer peripheral surface 926 of the reinforcing element 920 against the rear surface 915 may allow for a smooth transition of the reinforcing element 920 to the rear surface 915. Further, filleting the outer peripheral surface 926 of the reinforcing element 920 to the rear surface 915 can direct stress from impact to the reinforcing element 920 and away from the face surface 914. On the other hand, the outer peripheral surface 926 of the reinforcing element 920 or the inner peripheral surface 929 of the looped rib 927 can be filleted to the rear surface 915 using a fillet 923 having a radius of about 0.012 centimeters or more . For example, in some embodiments, the fillet 923 of the outer peripheral surface 926 relative to the back surface 915 is about 0.012 centimeters to about 2.0 centimeters, about 0.50 centimeters to about 3.0 centimeters, Alternatively, it can range from about 1.0 centimeters to about 4.0 centimeters. For further example, in some embodiments, the fillet 923 of the inner peripheral surface 929 to the back surface 915 is about 0.012 centimeters to about 2.0 centimeters, about 0.50 centimeters to about 3.00 It can be in the range of centimeters, or about 1.0 centimeters to about 4.0 centimeters.

  In some embodiments, the outer peripheral surface 926 of the reinforcing element 920 can be filleted directly to the back surface 915. In these embodiments, the face thickness gradually decreases along the fillet 923 from the face thickness at the apex of the stiffening element 920 to the face thickness at the back surface 915.

  In some embodiments, the club head 900 can further include a lip (not shown) similar to the lip 552 described above and in FIGS. 9-17 above the rear surface 915 of the club head 900. The lip of the club head 900 can extend from the heel end 906 to the toe end 905 around the reinforcing element 920 of the club head 900. In these or other embodiments, the fillet 923 on the outer peripheral surface 926 of the reinforcing element 920 can transition to the lip. Thus, the face thickness gradually decreases along the fillet 923 from the top of the reinforcing element 920 to the minimum thickness between the lip and the reinforcing element 920, and then from the minimum thickness to the lip Gradually increase to the top. In these embodiments, the minimum thickness between the stiffening element 920 and the lip can be greater than the thickness at the face center 916, and the minimum thickness between the stiffening element 920 and the lip is the face center The thickness at 916 can be approximately equal or the minimum thickness between the stiffening element 920 and the lip can be less than the thickness at the face center 916.

  The bottom end 902 of the club head body 910 can further comprise a sole 961. The sole 961 comprises an inner sole surface 962. Further, sole 961 may be a feature in club heads 300, 600 and 800. As illustrated in FIGS. 18A and 18B, there is an internal radius transition 963 from the rear surface 915 of the face element 911 to the inner sole surface 962. The radius transition 963 can comprise a smooth transition or cascading sole 955 proximate to the back surface 915 of the face element 911. As illustrated in FIG. 18B, cascading sole 955 can comprise a first tier 959 and a second tier 960. The first tier 959 is proximal to the front end 903, the second tier 960 is proximal to the rear end 904, and the first tier 959 transitions to the second tier 960. Further, the first tier 959 comprises a thickness greater than the thickness of the second tier 960. Further details of cascading sole 955 are disclosed in US patent application Ser. No. 14 / 920,280 for Golf Club Heads with Energy Storage Characteristics.

  Undercut 950 increases the structural integrity of face element 911 of club head 900. More specifically, the position of the undercut allows for a larger distribution area of stress experienced by the face element 911 at the upper end 901 during impact with the ball, and the stress travels along the top rail 924 . The distribution of stress in the top rail of the top end 901 can prevent permanent deformation of the face element 911. Maintaining the structural integrity of the face element 911 enables the club head body 910 to produce consistent optimal performance characteristics and feel, with performance (i.e., ball speed, ball trajectory) over time. And does not deteriorate after multiple use.

  Furthermore, the undercut 950 located directly behind the front end 903 above the top end 901 allows the face element 911 to have a greater deflection during impact. Deflection of the face element 911 affects the coefficient of restitution (COR) of the club head 900. COR measures the elasticity of an object at impact and is the ratio of the object's final relative velocity to the object's initial relative velocity. Higher COR results in increased ball speed and distance, and lower COR results in reduced ball speed and distance. Thus, the undercut 950 of the club head 900 affects the distance and speed of the ball after impact. As the undercut 950 increases the deflection of the face element 911, the distance and speed of the ball also increases.

  Furthermore, the undercut 950 allows removal of mass from the upper end 901 of the club head. The removed mass may then be redistributed to other locations on the club head, such as bottom end 902, toe end 905, heel end 906, or any combination thereof. Mass redistribution provides club heads with higher performance characteristics such as increased moment of inertia (MOI) and ideal center of gravity (CG) design. The increased MOI and ideal CG design can result in increased ball speed, preventing rotation of the club head 900 from the toe end 905 to the heel end 906 during the swing. Preventing rotation of the club head 900 from the toe end 905 to the heel end 906 allows for better ball contact and a more ideal trajectory of the ball (i.e., a straight trajectory).

  As described previously, the reinforcing device 912 and the reinforcing element 920 strengthen the face element 911 while allowing the face element 911 to flex, such as, for example, when the face surface 914 impacts a golf ball. Configured as. As a result, the face element 911 allows the mass from the face element 911 to be redistributed to other parts of the club head 900, making the face element 911 more stable without buckling and breaking under the resulting bends. The face element 911 can be thinned so that it can be made flexible. Advantageously, the center of gravity, moment of inertia, and coefficient of restitution of the club head 900 are performance characteristics of the club head 900 because the face element 911 can be thinner when implemented with the stiffening device 912 and the stiffening element 920. It can be changed to improve the For example, implementing reinforcing device 912 and reinforcing element 920, golf hit at face surface 914 by increasing the firing angle, increasing the ball speed, and / or reducing the spin of the golf ball. The flight distance of the ball can be increased. In these examples, reinforcing device 912 and reinforcing element 920 can have the effect of counteracting some of the gearing on the golf ball provided by face surface 914.

  The stiffening device 912 and the stiffening element 920 can further provide the benefit of reducing stress when implemented as a closed structure (ie, looped rib 927). Such a closed structure is capable of resisting deformation as a result of circumferential (i.e., hoop) stresses acting on the stiffening device 912 and the stiffening element 920. For example, circumferential (ie, hoop) stresses acting on the stiffening device 912 and the stiffening element 920 prevent the opposing sides of the stiffening device 912 and the stiffening element 920 from rotating away from one another, thereby reducing bending. obtain.

  Cascading sole 955 allows some of the stress experienced by face elements 911 near sole 961 to be distributed to first tier 959 and second tier 960. The distribution of stress by the first tier 959 and the second tier 960 of the cascading sole 955 prevents stress concentration mainly in the thinnest section of the face element 911 near the sole 961. The distribution of stress by the first tier 959 and the second tier 960 in the sole 961 can prevent permanent deformation and maintain the structural integrity of the face element 911. Thus, face element 911 can produce more consistent performance and feel after multiple impacts with the ball.

  19-21 illustrate another embodiment of a club head 1500. FIG. FIG. 19 is a side cross sectional view of the club head 1500, FIG. 20 is a rear perspective view of the club head 1500, and FIG. 21 is a front view of the club head 1500. The club head 1500 comprises a club head body 1510. As illustrated in FIG. 19, the club head body 1510 can be similar to the club head bodies 110 and 910, and the club head body 1510 has an upper end 1501, a bottom end opposite the upper end 1501. 1502, a front end 1503, a rear end 1504 opposite the front end 1503, a toe end 1505, a heel end 1506 opposite to the toe end 1505, and a face element 1511. The toe end is further divided into a first toe end portion 1505A, a second toe end portion 1505B, and a third toe end portion 1505C. The first toe end portion 1505 A is located adjacent to the upper end 1501 and is integrally formed with the upper end 1501. The third toe end portion 1505 C is located adjacent to the bottom end 1502 and is integrally molded with the bottom end 1502. The second toe end portion 1505B is located between the first toe end portion 1505A and the third toe end portion 1505C.

  The club head 1500 further comprises a hosel 1521. The hosel 1521 is integrally molded with the club head body 1510. As illustrated in FIGS. 20 and 21, dotted line A-A represents the junction of hosel 1521 and club head body 1510, as face element 1511 transitions from a flat surface to a curve. The club head body 1510 ends and the hosel 1521 begins.

  In many embodiments, the face element 1511 of the club head body 1510 comprises a face surface 1514 positioned on the front end 1503 and a back surface 1515 positioned on the back end 1504 opposite the face surface 1514; Equipped with The face surface 1514 can point to the striking face or striking plate of the club head 1500 and is configured to impact a golf ball (not shown). The face surface 1514 includes a face center 1516 located substantially at the center of the face surface 1514, and a face peripheral portion 1517 along the periphery of the face surface 1514. The face rim 1517 abuts the dotted line A-A at the heel end 1506 of the club head body 1510. The rear surface 1515 of the face element 1511 comprises a rear center 1518 opposite the face center 1516 and a rear rim 1519 opposite the face rim 1517. The rear rim 1519 abuts the dotted line A-A at the heel end 1506 of the club head body 1510.

  FIG. 19 illustrates the rear end 1504 of the club head body 1510. Several cavities can be formed along the rear surface 1515 and the peripheral edge of the face element 1511 between several rear wall structures described in more detail below. In many embodiments, these cavities are integral with one another and connect together to form a 360 degree undercut between the back surface 1515 and several back wall structures. Some back wall structures are formed from the top 1501, bottom 1502, toe 1505, and heel 1506 ends of the club head body 1510. In other embodiments, some of the cavities may be integral with one another and may be connected together, with the other cavities being structural (eg, ribs, ledges, walls, or , Any other separating type of structure). In many embodiments, the club head body 1510 with the formed cavity can further comprise a reinforcement device 1512 (as described in more detail below). In other embodiments, a golf club head with a formed cavity can be without the reinforcement device 1512.

(Club head with undercut)
As illustrated in FIGS. 19 and 20, the upper end 1501 of the club head body 1510 comprises a top rail 1507. The top rail 1507 extends in an arc toward the rear end 1504 and the bottom end 1502 to form a top rail wall 1513. The curvature of the top rail wall 1513 covers a portion of the back surface 1515 such that a first cavity 1541 is formed between the back surface 1515 and the top rail wall 1513. Top rail wall 1513 can extend from heel end 1506 to to end 1505. Similarly, the first cavity 1541 at the top end 1501 can extend from the heel end 1506 to the toe end 1505. The top rail wall 1513 can cover approximately 10% to 22% of the rear surface 1515. For example, the top rail wall 1513 can cover about 10%, 12%, 14%, 16%, 18%, 20%, or 22% of the rear surface 1515. In some embodiments, the top rail wall 1513 can cover about 18% of the rear surface 1515. The percent coverage of the rear surface 1515 by the top rail wall 1513 is associated with a first depth 1531 of the first cavity 1541.

  As illustrated in FIG. 19, the first depth 1531 of the first cavity 1541 is parallel to the face surface 1514 from the opening of the first cavity 1541 to the back rim 1519 at the top of the top rail 1507. Measured. The first depth 1531 may be a consistent depth or may vary along the first cavity 1541. The first depth 1531 of the first cavity 1541 in the top rail 1507 can range from about 0.115 inches to 0.135 inches. For example, the first depth 1531 of the first cavity 1541 is about 0.115 inches, 0.117 inches, 0.119 inches, 0.121 inches, 0.123 inches, 0.0125 inches, 0.127 It can be 0.129 inches, 0.131 inches, 0.133 inches, or 0.135 inches. In some embodiments, the first depth 1531 is about 0.125 inches.

  The bottom end 1502 of the club head body 1510 comprises a sole 1508. The sole 1508 is integrally formed into the rear portion 1509. The rear portion 1509 extends upwardly toward the top end 1501 over a portion of the rear surface 1515. The rearward upward extension of the rear portion 1509 covering the rear surface 1515 forms a second cavity 1542 between the rear surface 1515 and the rear portion 1509. The rear portion 1509 can extend from the heel end 1506 to the toe end 1505. Similarly, a second cavity 1542 between the rear surface 1515 and the rear portion can extend from the heel end 1506 to the toe end 1505. The rear portion 1509 can cover approximately 30% to 55% of the rear surface 1515. For example, the rear portion 1509 can cover about 30%, 35%, 40%, 45%, 50%, or 55% of the rear surface 1515. In some embodiments, the rear portion 1509 extending upwardly toward the top end 1501 can cover about 45% of the rear surface 1515. The percent coverage of the rear portion 1509 covering the rear surface 1515 is associated with the second depth 1532 of the second cavity 1542.

  As illustrated in FIG. 19, the second depth 1532 of the second cavity 1542 is parallel to the face surface 1514 from the opening of the second cavity 1542 to the rear rim 1519 at the bottom of the sole 1508. It is measured. The second depth 1532 may be a consistent depth or may vary along the second cavity 1542. The second depth 1532 of the second cavity 1542 can range from approximately 0.460 inches to 0.580 inches. For example, the second depth 1532 may be approximately 0.460 inches, 0.480 inches, 0.500 inches, 0.520 inches, 0.540 inches, 0.560 inches, or 0.580 inches. Can. In some embodiments, the second depth 1532 of the second cavity 1542 can be about 0.500 inches.

  As illustrated in FIG. 20, at the toe end 1505 of the club head body 1510, the toledge portion 1526 curves and extends toward the top rail 1507, the sole 1508, and the heel end 1506. Can. Tredge portion 1526 extends from upper end 1501 toward lower end 1502. The toledge portion is integrally formed with the rear portion 1509 of the sole 1508 and the top rail wall 1513 of the top rail 1507. More specifically, the toledge portion 1526 in the first toe end portion 1505A is adjacent to the top rail 1507 and integrally formed with the top rail 1507, and the torge portion in the third toe end portion 1505C. Portion 1526 is adjacent to back portion 1509 and is integrally formed with back portion 1509. A top ledge 1507 and a ledge 1526 extending towards the heel end 1506 can form a third cavity 1543 between the rear face 1515 and the ledge 1526 at the first toe end portion 1505A. The third cavity 1543 is adjacent to the first cavity 1541 in the top rail 1507 and can be integral with the first cavity 1541. Below the third cavity 1543, a fourth cavity 1544 may be further formed between the rear surface 1515 and the trellis portion 1526 at the second toe end portion 1505B. The fourth cavity 1544 is adjacent to the second cavity 1542 at the sole 1508 and may be integral with the second cavity 1542.

  The trellis portion 1526 can cover a portion of the rear surface 1515. More specifically, the trellis portion 1526 at the first toe end portion 1505A can cover approximately 7% to 15% of the rear surface 1515. For example, the torge portion 1526 at the first toe end portion 1505A can cover approximately 7%, 9%, 11%, 13%, or 15% of the rear surface 1515. In some embodiments, the trellis portion 1526 at the first toe end portion 1505A covers approximately 9% of the back surface 1515. The percent coverage of the trellis portion 1526 is greatest and most pronounced at the first toe end portion 1505A. Similarly, the third depth 1533 (described in more detail below) of the third cavity 1543 associated with the percent coverage of the torge portion 1526 in the first toe end portion 1505A is also very pronounced . The percent coverage by the tow portion at the first end is more pronounced, which can increase top / to weighting and help improve the moment of inertia. The percent coverage of the toe end portion 1505A at the first toe end portion 1505A decreases toward the second toe end portion 1505B, and the percent coverage of the torge portion 1526 at the second toe end portion 1505B Is the smallest of the two.

  As illustrated in FIG. 20, the third cavity 1543 of the toe end 1505 adjacent to the top rail 1507 comprises a third depth 1533. The third depth 1533 is measured parallel to the face surface 1514 from the opening of the third cavity 1543 to the back rim 1519 at the edge of the first toe end portion 1505A. The third depth 1533 may be consistent or may vary along the third cavity 1543. The third depth 1533 of the third cavity 1543 can range from approximately 0.215 inches to 0.245 inches. For example, the third depth 1533 is approximately 0.215 inches, 0.219 inches, 0.223 inches, 0.227 inches, 0.231 inches, 0.235 inches, 0.235 inches, 0.239 inches, 0.243 inches Or can be 0.245 inches. In some embodiments, the third depth 1533 of the third cavity 1543 can be about 0.230 inches.

  The fourth cavity 1544 of the toe end 1505 adjacent to the sole 1508 is associated with the fluted portion 1526 in the second toe end portion 1505B. The trellis portion 1526 at the second toe end portion 1505B can cover a portion of the back surface 1515 ranging from approximately 4% to 10%. For example, the torge portion 1526 at the second toe end portion 1505B can cover about 4%, 5%, 6%, 7%, 8%, 9%, or 10% of the rear surface 1515. In some embodiments, the trellis portion 1526 at the second toe end portion 1505B can cover approximately 5% of the rear surface 1515. The percent coverage of the trellis portion 1526 is minimal at the second toe end portion 1505B. Similarly, the fourth depth 1534 (described in more detail below) of the fourth cavity 1544 associated with the percent coverage of the tredge portion 1526 at the second toe end portion 1505B is also very small. The percent coverage of the tredge portion 1526 at the second toe end portion 1505B is much smaller than the percent coverage at the first toe end portion 1505A. In other embodiments, the percent coverage of the rear surface 1515 at the second toe end portion 1505B can be greater than or equal to the percent coverage of the rear surface 1515 at the first toe end portion 1505A. The percent coverage of the toledge portion 1526 at the second toe end portion 1505B is maintained substantially constant and is formed on the third toe end portion 1505C until it is integrally formed with the rear portion 1509. Slightly increase towards.

  The fourth cavity 1544 of the toe end 1505 between the third cavity 1543 adjacent to the top rail 1507 and the second cavity 1542 in the sole 1508 comprises a fourth depth 1534. The fourth depth 1534 is the distance measured parallel to the face surface 1514 from the opening of the fourth cavity 1544 to the back peripheral edge 1519 at the edge of the second toe end portion 1505B. It can be seen that the fourth depth 1534 varies along the fourth cavity 1544, but in other embodiments may be consistent along the fourth cavity 1544. The fourth depth 1534 of the fourth cavity 1544 can range from approximately 0.140 inches to 0.165 inches. For example, the fourth depth 1534 may be approximately 0.140 inches, 0.144 inches, 0.148 inches, 0.152 inches, 0.156 inches, 0.160 inches, or 0.165 inches. Can. In some embodiments, the fourth depth 1534 of the fourth cavity 1544 can be about 0.150 inches. As mentioned above, the fourth depth 1534 of the fourth cavity 1544 is correlated with the percent of the rear surface 1515 covered by the trellis portion 1526 at the second toe end portion 1505B. The percent coverage of the rear surface 1515 by the trellis portion 1526 is smaller at the second toe end portion 1505B than at the first toe end portion 1505A, such that the fourth depth 1534 is the third depth 1533. Less than. In other embodiments in which the percent coverage of the rear surface 1515 by the toledge portion 1526 is greater at the second toe end portion 1505B than at the first toe end portion 1505A, the fourth depth 1534 is a third depth. The depth may be greater than 1533. In other embodiments in which the back surface 1515 percent coverage by the toledge portion 1526 is the same as in the second toe end portion 1505B and the first toe end portion 1505A, the fourth depth 1534 is a third depth It may be the same as the depth 1533.

  At the heel end 1506 of the club head body 1510, the heel ledge portion 1524 can curve and extend towards the top rail 1507, the sole 1508 and the toe end 1505. A fifth cavity 1545 is formed between the rear surface 1515 and the heel ledge 1524. Heel ledge portion 1524 extends from top end 1501 to bottom end 1502 and is integrally formed with top rail 1507 and rear portion 1509. The heel ledge portion 1524 can cover a portion of the rear surface 1515. The heel ledge portion 1524 can cover approximately 3% to 8% of the rear surface 1515. For example, the heel ledge portion 1524 can cover about 3%, 4%, 5%, 6%, 7%, or 8% of the rear surface 1515. In some embodiments, the heel ledge portion 1524 can cover about 4% of the rear surface 1515. The percent coverage of the heel ledge portion 1524 covering the back surface 1515 is related to the fifth depth 1535 of the fifth cavity 1545.

  As illustrated in FIG. 20, the fifth depth 1535 of the fifth cavity 1545 is from the opening of the fifth cavity 1545 at the rear rim at the heel end 1506 (abutted against dotted line A-A) To 1519, it is measured parallel to the face surface 1514. The fifth depth 1535 may be consistent or may vary along the fifth cavity 1545. The fifth depth 1535 of the fifth cavity 1545 can range from about 0.080 inches to 0.110 inches. For example, the fifth depth 1535 is approximately 0.080 inches, 0.082 inches, 0.084 inches, 0.086 inches, 0.088 inches, 0.090 inches, 0.092 inches, 0.094 inches , 0.096 inches, 0.098 inches, 0.100 inches 0.102 inches, 0.104 inches, 0.106 inches, 0.108 inches, or 0.110 inches. In some embodiments, the fifth cavity 1545 can have a fifth depth 1535 of about 0.100 inches.

  As illustrated in FIG. 20, the first cavity 1541, the second cavity 1542, the third cavity 1543, the fourth cavity 1544 and the fifth cavity 1545 described above are all integral with each other. Connected and define a continuous 360 degree undercut 1550. In the exemplary embodiment, the undercut 1550 can comprise a first cavity 1541, a second cavity 1542, a third cavity 1543, a fourth cavity 1544, and a fifth cavity 1545. The undercut 1550 further comprises 100% of the rear rim 1519 of the face element 1511 of the club head body 1510. The undercuts 1550 of the club head body 1510 can help reduce weight and increase flexion in the face element 1511. In other embodiments, the cavities (eg, first cavity 1541, second cavity 1542, third cavity 1543, fourth cavity 1544 and fifth cavity 1545) are separated in any combination Undercuts 1550 may comprise 70% to 100% of the back edge 1519. For example, the cavities may be between the first cavity 1541 and the second cavity 1542, or between the third cavity 1543 and the fourth cavity 1544, or the first, second, third or the like. Between any combination of the fourth and fifth cavities 1541, 1542, 1543, 1544 and 1545, they can be split and discontinuous. In some embodiments, the separation between the cavities may be a structure (not shown), such as a rib, a lip, a ledge, a wall, a protrusion, or any other dividing structure. it can. In these exemplary embodiments, the undercut 1550 can comprise 70%, 75%, 80%, 85%, 90%, 95%, or 100% of the back peripheral edge 1519.

  The face element 1511 of the club head body 1510 comprising the several cavities described above to form a 360 degree undercut 1550 can further comprise a face thickness. The face thickness of the face element 1511 can help distribute stress and allow for further face inflection along the undercut 1550 during ball impact. In many embodiments, the face thickness of face element 1511 can vary from toe end 1505 to heel end 1506, from top end 1501 to bottom end 1502, or any combination thereof.

  As shown in FIG. 19, the face thickness of the face element 1511 comprises a first thickness 1551, a second thickness 1552, a third thickness 1553 and a fourth thickness 1554. be able to. The first thickness 1551 is measured perpendicularly from the face center 1516 to the rear center 1518. The first thickness 1551 is about 0.055 inches to about 0.075 inches, about 0.055 inches to about 0.065 inches, about 0.065 inches to about 0.075 inches, or about 0.060. It can range from inches to about 0.070 inches. For example, the first thickness 1551 may be 0.055 inches, 0.057 inches, 0.059 inches, 0.061 inches, 0.063 inches, 0.065 inches, 0.067 inches, 0.069 inches, It can be 0.071 inches, 0.073 inches, or 0.075 inches. In some embodiments, the first thickness 1551 of the face element 1511 can be about 0.065 inches.

  As shown in FIG. 19, the second thickness 1552 is the face thickness measured perpendicularly from the face surface 1514 to the apex of the stiffening element 1520 (details described below). In some embodiments without reinforcing elements 1520, the second thickness 1552 is measured perpendicularly from the face surface 1514 to the rear surface 1515 adjacent to the rear center 1518. The second thickness 1552 is about 0.150 inches to about 0.200 inches, about 0.150 inches to about 0.160 inches, about 0.160 inches to about 0.170 inches, about 0.170 inches to About 0.180 inches, about 0.180 inches to about 0.190 inches, about 0.190 inches to about 0.200 inches, about 0.150 inches to about 0.175 inches, or about 0.175 inches to It can be in the range of about 0.200 inches. For example, the second thickness 1552 is about 0.150 inches, about 0.155 inches, about 0.160 inches, about 0.165 inches, about 0.170 inches, about 0.175 inches, about 0.180 It can be inches, about 0.185 inches, about 0.188 inches, about 0.190 inches, about 0.195 inches, or about 0.200 inches. In some embodiments, the second thickness 1552 of the face element 1511 can be about 0.188 inches.

  As shown in FIG. 19, the third thickness 1553 is a face thickness without the reinforcing element 1512, adjacent to the back peripheral edge 1519 and distal to the rear center, from the face surface 1514 to the rear surface And measured vertically. The third thickness 1553 is about 0.050 inches to about 0.060 inches, about 0.060 inches to about 0.070 inches, about 0.070 inches to about 0.080 inches, about 0.080 inches It can be in the range of about 0.090 inches, about 0.090 inches to about 0.100 inches, about 0.050 inches to about 0.75 inches, or about 0.075 inches to about 0.100 inches. . For example, the third thickness 1553 may be about 0.050 inches, about 0.55 inches, about 0.060 inches, about 0.065 inches, about 0.070 inches, about 0.075 inches, about 0.080. It can be inches, about 0.085 inches, about 0.088 inches, about 0.090 inches, about 0.095 inches, or about 0.100 inches. In some embodiments, the third thickness 1553 of the face element 1511 can be about 0.088 inches.

  As shown in FIG. 19, the fourth thickness 1554 is a face thickness measured perpendicularly from the face surface 1514 to the edge of the rear peripheral edge 1519 of the rear surface 1515. The fourth thickness 1554 is about 0.050 inch to about 0.070 inch, about 0.050 inch to about 0.060 inch, about 0.060 inch to about 0.070 inch, about 0.050 inch to about It can range from about 0.058 inch, about 0.058 inch to about 0.064 inch, or about 0.064 inch to about 0.070 inch. For example, the fourth thickness 1554 may be about 0.50 inches, about 0.052 inches, about 0.054 inches, about 0.056 inches, about 0.058 inches, about 0.060 inches, about 0.062 It can be inches, about 0.064 inches, about 0.066 inches, about 0.068 inches, or about 0.070 inches. In some embodiments, the fourth thickness 1554 of the face element 1511 can be about 0.060 inches.

  In some embodiments, the club head body 1510 may be free of the strengthening device 1512 and the strengthening element 1520. In this exemplary embodiment, the face element 1511 near the face center (first thickness 1551 and second thickness 1552) is 0.088 inches (about 0.088 inches) to distribute the stress. A range of inches to about 0.100 inches, about 0.088 inches to about 0.220 inches, about 0.100 inches to about 0.220 inches, or about 0.140 inches to about 0.180 inches It can be thick. For example, face element 1511 near face center 1516 may be about 0.088 inches, about 0.090 inches, about 0.092 inches, about 0.094 inches, about 0.096 inches, about 0.098 inches, about A first thickness 1551 and a second thickness 1552 may be provided, such as 0.100 inches, about 0.110 inches, about 0.114 inches, about 0.180 inches, or about 0.220 inches.

(Club head with undercut and reinforcement device)
As illustrated in FIGS. 19 and 20, in some embodiments, the club head body 1510 further comprises a strengthening device 1512 similar to the strengthening devices 112, 612 and 912. In other embodiments, the club head body 1510 can be without the strengthening device 1512. The reinforcing device 1512 is located on the back surface 1515 of the face element 1511 at approximately the back center 1518. The reinforcement device 1512 extends from the back surface 1515 away from the front end 1503. The enhancement device 1512 comprises one or more enhancement elements 1520. In many embodiments, each reinforcing element of the plurality of reinforcing elements 1520 comprises an outer peripheral surface 1626, an inner peripheral surface 1629, and a geometric center. The reinforcing element 1520 further comprises looped ribs 1527. In these or other embodiments, the geometric center or centers of one or more of the reinforcing elements 1520 can be at the back center 1518 of the back surface 1515.

  In some embodiments, the looped rib 1527 can comprise a plurality of looped ribs. Each looped rib 1527 may be concentric with one another. In other embodiments, when the looped rib 1527 comprises a plurality of looped ribs, two or more of the looped ribs 1527 may be non-concentric. Further, in these or other embodiments, two or more of the looped ribs 1527 may overlap. On the other hand, in some embodiments, looped rib 1527 may comprise an oval looped rib, and in other embodiments, looped rib 1527 may comprise a circular looped rib.

  In implementation, the reinforcing element 1520 and the looped rib 1527 may be any suitable shape (e.g., multiple) configured to perform the intended function of the reinforcing device 1512 and / or the reinforcing element 1520 described above. It may be implemented in a square, an oval, a circle etc.) and / or any suitable configuration. Furthermore, when the reinforcement element 1520 comprises a plurality of reinforcement elements, two or more of the reinforcement elements of the reinforcement elements 1520 may be similar to another and / or two of the reinforcement elements 1520. One or more reinforcing elements may be different from one another.

  In some embodiments, one or more outer peripheral surfaces 1626 of the reinforcing element 1520 can be filleted to the back surface 1515. In these or other embodiments, one or more inner circumferential surfaces 1629 of the looped rib 1627 can be filleted to the back surface 1515. The fillet of the outer peripheral surface 1626 of the reinforcing element 1520 to the rear surface 1515 may allow for a smooth transition of the reinforcing element 1520 to the rear surface 1515. Further, filleting the outer peripheral surface 1626 of the reinforcing element 1520 to the rear surface 1515 can direct stress from impact to the reinforcing element 1520 and away from the face surface 1514. Meanwhile, the outer peripheral surface 1626 of the reinforcing element 1520 or the inner peripheral surface 1629 of the looped rib 1627 can be filleted to the rear surface 1515 using a fillet 1523 having a radius of about 0.012 centimeters or more . For example, in some embodiments, the fillet 1523 of the outer peripheral surface 1626 to the back surface 1515 is about 0.012 centimeters to about 2.0 centimeters, about 0.50 centimeters to about 3.0 centimeters, Alternatively, it can range from about 1.0 centimeters to about 4.0 centimeters. For further example, in some embodiments, the fillet 1523 of the inner peripheral surface 1629 to the rear surface 1515 is about 0.012 centimeters to about 2.0 centimeters, about 0.50 centimeters to about 3.00 It can be in the range of centimeters, or about 1.0 centimeters to about 4.0 centimeters.

  In some embodiments, the outer peripheral surface 1626 of the reinforcing element 1520 can be filleted directly to the back surface 1515. In these embodiments, the face thickness is along the fillet 1523 from the face thickness at the second face thickness 1552 (from the face surface 1514 to the apex of the stiffening element 1520) to the face thickness at the back surface 1515 It will decrease gradually.

  In some embodiments, the club head 1500 can further include a lip (not shown) similar to the lip 552 described above and in FIGS. 15-17 on the rear surface 1515 of the club head 1500. The lip of the club head 1500 can extend from the heel end 1506 to the toe end 1505 around the reinforcement elements 1520 of the club head 1500. In these or other embodiments, the fillet 1523 on the outer peripheral surface 1626 of the reinforcing element 1520 can transition to the lip. Thus, the face thickness gradually decreases along the fillet 1523 from the second thickness 1552 to the minimum thickness between the lip and the stiffening element 1520 and then from the minimum thickness to the lip Gradually increase to the top of the In these embodiments, the minimum thickness between the reinforcing element 1520 and the lip may be greater than the first thickness 1551 at the face center 1516 and the minimum between the reinforcing element 1520 and the lip The thickness of the may be substantially equal to the first thickness 1551 or the minimum thickness between the reinforcing element 1520 and the lip may be less than the first thickness 1551.

  As described previously, the reinforcing device 1512 and the reinforcing element 1520 strengthen the face element 1511 while allowing the face element 1511 to flex, such as, for example, when the face surface 1514 impacts a golf ball. Configured as. As a result, the face element 1511 allows the mass from the face element 1511 to be redistributed to other parts of the club head 1500 and makes the face element 1511 more stable without buckling and breaking under the resulting bends. The face element 1511 can be thinned so that it can be made flexible. Advantageously, the center of gravity, moment of inertia, and coefficient of restitution of the club head 1500 can provide performance characteristics of the club head 1500 since the face element 1511 can be thinner when implemented with the reinforcement device 1512 and the reinforcement element 1520 It can be modified to improve. For example, when mounting reinforcing device 1512 and reinforcing element 1520, golf struck at face surface 1514 by increasing the firing angle, increasing the ball speed, and / or decreasing the spin of the golf ball. The flight distance of the ball can be increased. In these examples, the reinforcing device 1512 and the reinforcing element 1520 can have the effect of counteracting some of the gearing on the golf ball provided by the face surface 1514.

  The stiffening device 1512 and the stiffening element 1520 can further provide the benefit of reducing stress when implemented as a closed structure (ie, looped rib 1527). Such a closed configuration is capable of resisting deformation as a result of circumferential (i.e., hoop) stresses acting on the stiffening device 1512 and the stiffening element 1520. For example, circumferential (ie, hoop) stresses acting on the stiffening device 1512 and the stiffening element 1520 prevent the opposing sides of the stiffening device 1512 and the stiffening element 1520 from rotating away from one another, thereby reducing bending. obtain.

  The undercuts 1550 of the club head body 1510 can produce performance characteristics similar to the strengthening device 1512 described above. In some embodiments, the club head body 1510 can be without the reinforcement device 1512 and the club head body 1510 with the undercut 1550 is a club head body with both the reinforcement device 1512 and the undercut 1550 It can be implemented analogously to 1510. A 360 degree extending undercut comprising a first cavity 1541, a second cavity 1542, a third cavity 1543, a fourth cavity 1544 and a fifth cavity 1545 is a face element 1511 during impact. Allows for optimal bending and deflection of In a similar club head body without 360 degree undercuts, the face element can not flex or flex as much. More specifically, a similar club head body without the third cavity 1543, the fourth cavity 1544 and / or the fifth cavity 1545 may flex or bow at the heel end and the toe end Can not. A similar club head deflection is limited at the heel end 1506 and at the toe end 1505 will not have any space for the back surface of the face element to flex back. Specifically, the 360 degree undercut 1550 of the club head body 1510 with the third cavity 1543 and the fourth cavity 1544 at the toe end 1505 and the fifth cavity 1545 at the heel end 1506 , Prevents the rear surface 1515 of the face element 1511 from contacting the trellis portion 1526 and the heel ledge portion 1524 during impact. Thus, the face element 1511 can flex freely for greater deflection. The fourth depth 1534 of the fourth cavity 1544 further prevents the rear surface 1515 of the face element 1511 from contacting the trellis portion 1526 during impact due to increased deflection. Due to the small fourth depth 1534 of the fourth cavity 1543 (i.e. the notched portion 1526 is not as pronounced), the face element 1511 near the toe end 1505 extends further back can do.

  Deflection of the face element 1511 affects the coefficient of restitution (COR) of the club head 1500. COR measures the elasticity of an object at impact and is the ratio of the object's final relative velocity to the object's initial relative velocity. Higher COR results in increased ball speed and distance, and lower COR results in reduced ball speed and distance. Thus, the increased deflection of the 360 degree undercut 1550 of the club head 1500 affects the distance and speed of the ball after impact. As the undercut 1550 increases the deflection of the face element 1511, the distance and speed of the ball also increases.

  In addition, the 360 degree undercut 1550 is located between the periphery of the face element 1511 that experiences the least amount of stress (ie, between the back surface 1515 and the back portion 1509, top rail 1507, tredge portion 1526 and heel ledge portion 1524 Enables removal of the mass from the rear rim 1519). The removed mass is then re-directed to another location above club head 1500 (eg, bottom end 1502, near toe end 1505, near heel end 1506, or any combination thereof). It can be distributed. Mass redistribution can be lower and shift the center of gravity (CG) back towards the back end 1504, which has higher performance characteristics such as increased moment of inertia (MOI), etc. Can be provided with a club head. The width of the first portion 1526A can further affect the mass distribution for CG and MOI. The width of the first portion 1526A, as illustrated in FIG. 20, adds mass into the toe end 1505 and helps improve the MOI. Better CG design and increased MOI can result in increased ball speed, preventing rotation of the club head 1500 from the toe end 1505 to the heel end 1506. Preventing rotation of the club head 1500 from the toe end 1505 to the heel end 1506 allows for better contact with the ball upon impact, which provides optimal ball speed, spin, and trajectory. It can occur as a result. In some embodiments, weights (not shown) can be disposed in the second cavity 1542 between the back surface 1515 and the back portion 1509 to make CG more effective. The weights positioned in the second cavity 1542 allow the CG to shift towards the aft end 1504 and the sole 1508. The weights disposed in the second cavity 1542 can further absorb the stresses and vibrations experienced by the club head body 1510 during impact. Absorbing stress and vibration with weights can help maintain the durability and structural integrity of the club head body 1510, as well as improve the player's feel.

  The club head body 1510 can further comprise a cascading sole 1555. Cascading sole 1555 is located in the inner cavity of sole 1508 at the bottom of the second cavity 1542 located between the rear portion 1509 and the rear surface 1515. The cascading sole 1555 of the club head body 1510 can be similar to the cascading sole 955 of the club head body 910 described above with a first layer (not shown) and a second layer (not shown). The cascading sole 1555 of the club head body 1510 allows some of the stress experienced by the face element 1511 near the sole 1508 to be distributed to the first and second layers of the club head body 1510 Make it The first and second layers of cascading sole 1555 of club head body 1510 prevent stress concentration mainly in the thinnest section of face element 1511 near sole 1508. The distribution of stress in the first and second layers in the sole 1508 prevents permanent deformation of the face element 1511. Thus, after multiple impacts with the ball, more consistent performance characteristics and feel can be produced.

  Golf club heads 100, 300, 600, 800, 900, 1500 may be part of a set of club heads having varying loft angles. In some embodiments, the central thickness 537, the outer face thickness 542 of the reinforcement element 120, the top thickness 546, the bottom thickness 548, the face thickness at the rib height 540, or a combination of the foregoing thicknesses is , Can vary with the loft angle of the club head within a set of club heads.

  Turning now to the following drawings, FIG. 10 shows a flow chart for one embodiment of a method 1000 for providing a golf club head. Method 1000 is merely exemplary and is not limited to the embodiments presented herein. Method 1000 may be used in many different embodiments or examples not specifically shown or described herein. In some embodiments, the acts, procedures, and / or processes of method 1000 may be performed in the order presented. In other embodiments, the acts, procedures, and / or processes of method 1000 may be performed in any other suitable order. In still other embodiments, one or more of the acts, procedures, and / or processes in method 1000 may be combined or skipped. In many embodiments, the golf club head comprises a golf club head 100 (FIGS. 1 and 2), a golf club head 600 (FIGS. 6 and 7), and / or a golf club head 800 (FIGS. 8 and 9). It may be similar or identical.

  Method 1000 can include an operation 1001 for providing a face element. The face element may be similar to or identical to face element 111 (FIG. 1).

  Method 1000 can include an act 1002 of providing a hardened device. The enhancement device may be similar to or identical to the enhancement device 112 (FIG. 1). FIG. 11 shows an exemplary operation 1002 according to the embodiment of FIG.

  For example, operation 1002 can include operation 1101 providing a first reinforcement element. The first reinforcement element may be any one of the first reinforcement element 121 (FIG. 1), the reinforcement element 621 (FIG. 6), the reinforcement element 120 (FIG. 1), and / or the reinforcement element 620 ( It may be similar to or identical to the reinforcement element of any one of FIG. 6).

  Further, operation 1002 can include operation 1102 providing a second reinforcement element. The second reinforcing element may be similar to or identical to any one of the second reinforcing element 641 (FIG. 6) and / or the reinforcing element 620 (FIG. 6). In some embodiments, operations 1101 and 1102 may be performed substantially simultaneously. In other embodiments, operation 1102 may be omitted.

  Returning to FIG. 10, method 1000 can include an act 1003 of providing a peripheral wall element. The peripheral wall element may be similar to or identical to the peripheral wall element 113 (FIG. 1). In some embodiments, operation 1003 may be omitted.

  In some embodiments, method 1000 can include an act 1004 of providing an insert in a central cavity in a reinforced device provided at operation 1002. In some embodiments, operation 1004 may be omitted.

  In many embodiments, two or more of operations 1001-1004 may be performed sequentially or may be performed substantially simultaneously with one another. In these or other embodiments, operations 1001-1004 may be performed performing any suitable manufacturing techniques (eg, casting, forging, molding, machining, joining, etc.).

  While the golf club head and related methods herein have been described in the context of particular embodiments, various modifications may be made without departing from the spirit or scope of the present disclosure. For example, for those skilled in the art, operations 1001-1004 of FIG. 10 and operations 1101 and 1102 of FIG. 11 are comprised of many different procedures, processes, and operations, and performed by many different modules in many different orders. What can be done, that any of the elements of FIGS. 1 to 4 can be modified, as well as the preceding discussion of some of these embodiments is not necessarily a complete description of all possible embodiments. It will be readily apparent that there is no limit.

(Example)
(Example 1: Comparison of 360 degree undercut and partial undercut)
Referring to Table 1 below, finite element analysis (to measure the internal energy (measured in pounds pounds inches) of two similar golf club heads during impact with a golf ball at 90 mph) FEA) Tests were conducted. Three points of impact on the face element of the golf club head were selected for FEA testing: toe end, face center and heel end. The first golf club head tested is the club head 1500, with the club head 1500 having a 360 degree undercut 1550, the undercut 1550 being continuous and of the club head body 1510. The first, second, third, fourth and fifth cavities 1541, 1542, 1542, 1544 and 1545 described above are provided. For comparative measurements, the control golf club head used was similar in size and construction, with cavities in the top rail and sole, but without the 360 degree undercut (ie heel end and There is no cavity in the toe end).

  The FEA test measured the internal energy generated by the face element. Here, 7.8 pounds-inch was equivalent to about 1 mph. As shown in Table 1 above, the golf club head has approximately 123.0 mph at the heel end 1506, approximately 125.3 mph at the face center 1516, and approximately 123.2 mph at the toe end 1505. Produced speed. Compared to club head 1500, the control golf club head produces lower golf ball speeds of about 122.4 mph at the heel end, about 124.3 mph at the face center, and about 121.9 mph at the toe end. The Club head comprised of a 360 degree undercut 1550 with integrally continuous first cavity 1541, second cavity 1542, third cavity 1543, fourth cavity 1544 and fifth cavity 1545 The 1500 has all 3 tested as compared to a similar control golf club head with only the top rail and the cavity in the sole (i.e. no cavity in the heel end and toe end). An increase in ball speed was observed at one point. More specifically, club head 1500 is about 1 mph at the face center, an increase of about 0.5 to 0.75 mph at heel end 1506 (about 0.5% increase) relative to the control golf club head. An increase (about 0.8% increase) and an increase of about 1 to 1.5 mph (about 1.1% increase) at the toe end 1505 was observed.

  The FEA test further showed the peak deflection of the face element of the golf club head experienced during impact with the golf ball. Peak deflection was measured by the FEA from the face surface of the face element at the start position to the face surface of the face element at the end of the impact position before the face element bounces back to the start position. The face element 1511 of the club head 1500 with a 360 degree undercut experiences a peak deflection of 0.040 inches to 0.050 inches while the golf club head of the control (the cavity in the top rail, and the sole of The face element with a cavity in it, but no cavities in the heel end and toe end) experienced a peak deflection of 0.030 inch to 0.040 inch. Thus, the face element 1511 of the club head 1500 with a 360 degree undercut has a 28.6% increase in peak deflection.

  As shown in Table 1 and described above, the club head 1500 is at the heel end 1506, face center 1516, and toe end 1505 as compared to the control golf club head. , Increased the ball speed, and also increased the peak deflection of the face element 1511. The increased performance results of the club head 1500 mainly include a 360 degree under which consists of the first cavity 1541, the second cavity 1542, the third cavity 1543, the fourth cavity 1544 and the fifth cavity 1545. Due to the cut 1550. This is compared to a similarly structured and sized control golf club head, the control golf club head having a cavity in the top rail and a cavity in the sole but at the heel end and There is no cavity in the toe end.

  A continuous 360 degree undercut 1550 (specifically comprising third and fourth cavities 1543 and 1544 at the toe end 1505 and a fifth cavity 1545 at the heel end 1506) Element 1511 allowed more space for flexing. Thus, more internal energy is generated, which is equivalent to higher ball speeds. Higher ball speeds can result in other performance characteristics, such as, for example, launch angle, ball spin, and narrowing the statistical area on which the ball lands. They all bring the ball's flight distance during the game. More specifically, the increase in ball speed experienced by the club head 1500 is only 0.1 degrees to 0.3 degrees as compared to a similar control club head with only the top rail cavity and the sole cavity It can be equivalent to a high launch angle and a ball spin that is 100 revolutions per minute (rpm) down to 300 rpm. Higher launch angles and lower ball spin can increase the flight distance of the ball after impact. The increase in launch angle and decrease in spin rate of the club head 1500 with the first, second, third, fourth, and fifth cavities 1541, 1542, 1542, 1544, 1545, the toe end cavity An increase in ball distance of 2 to 5 yards was observed as compared to a control club head without the heel end cavity.

  The club head 1500 comprised of the 360 degree undercut 1550 not only increased the ball speed, but also maintained an MOI similar to the control club head with only the top rail cavity and the sole cavity. Having an MOI similar to a club head with lower ball speeds means that the club head 1500 can behave as a more forgiving club without giving up faster ball speeds. The club head 1500 is more forgiving due to the more consistent ball speed across the face element 1511 (from the toe end 1505 to the heel end 1506). A more consistent ball speed across face element 1511 can thereby produce a more consistent ball flight and flight distance between hit (i.e., impact at heel end 1506 or toe end 1505).

  Furthermore, while the above examples may be described in connection with iron type golf club heads, the devices, methods, and products described herein may be wood type golf clubs or putter type golf It may be applicable to other types of golf clubs, such as clubs. Alternatively, the devices, methods, and products described herein may be other applicable types of sports equipment, such as hockey sticks, tennis racquets, fishing rods, ski stocks, and the like.

  Such alterations and other additional examples are contemplated as well, as well as other permutations of different embodiments having one or more of the various figure features listed in the above description. Accordingly, the specification, claims, and drawings herein are intended to be illustrative, not limiting, of the scope of the present disclosure. It is intended that the scope of the present application be limited only to the extent sought by the appended claims.

(Article 1) A golf club head comprising a front end and a rear end, a face element, a face surface located at the front end, and a rear surface located at the rear end, the rear center, Said face element comprising a rear rim and said rear face comprising a reinforcement device; and an upper end having a top rail extending in an arc towards the bottom end to form a top rail wall; A bottom portion having a sole integrally formed with the rear portion extending upward toward the upper end, a first toe end portion, a second toe end portion, and a third toe end portion The first toe end portion adjacent to the upper end and integrally formed with the upper end, the third toe end portion Is adjacent to the bottom end and is integral with the bottom end The second toe end portion is provided between the first toe end portion and the third toe end portion, the toe end portion being the top rail, The sole and a toledge portion extending in a curved manner toward the heel end, wherein the toledge portion is integrally formed with the top rail wall and the rear portion. A heel end portion comprising the toe end, the top rail, the sole, and a heel ledge portion curved and extending toward the toe end, the heel ledge portion being the top rail An undercut comprising the heel end and a first cavity, a second cavity, a third cavity, a fourth cavity, and a fifth cavity integrally formed with a wall and the rear portion And wherein the first cavity is formed between the back surface and the upper rear wall and has a first depth of 0.115 inches to 0.135 inches; A cavity is formed between the back surface and the back portion and has a second depth of 0.460 inches to 0.580 inches, and the third cavity includes the back surface and the back surface. Formed between said toledge portions at a first toe end portion and having a third depth in the range of 0.215 inches to 0.245 inches, said fourth cavity being A fifth depth formed between the back surface and the tow ledge at the second toe end portion and having a fourth depth in the range of 0.140 inches to 0.165 inches; Between the rear surface and the heel ledge And the fifth cavity has an undercut and an outer peripheral surface and an inner peripheral surface, the fifth cavity having a fifth depth ranging from 0.080 inches to 0.110 inches. A reinforcing element comprising a looped rib, wherein the outer peripheral surface of the reinforcing element is filleted to the rear surface.

(Item 2) The golf club head according to item 1, wherein the looped rib is symmetrical with respect to the x axis or symmetrical with respect to the y axis.

(Claim 3) All of the first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are integrally connected and continuous. The golf club head according to clause 1.

(Clause 4) The first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are separated by a dividing structure, and they are discontinuous. The golf club head according to clause 1 which is present.

5. The face element is measured perpendicularly from the face center to the back center of the face surface and comprises a first thickness in the range of 0.055 inches to 0.075 inches, the face elements comprising: A second thickness in the range of 0.150 inches to 0.200 inches, measured perpendicularly from the apex of the reinforcement element to the face surface, the face element being the reinforcement device from the face surface The face element comprises a third thickness ranging from 0.050 inches to 0.060 inches, measured perpendicularly to the rear rim adjacent to the rear rim and the rear center without the face element; The golf club head of clause 1, wherein the golf club head comprises a fourth thickness in the range of 0.050 inches to 0.070 inches.

Clause 6: The golf club head further comprises a cascading sole at the bottom of the second cavity, wherein the cascading sole comprises a first layer and a second layer. Golf club head.

Clause 7: The golf club head of clause 6, wherein the first layer comprises a thickness greater than a thickness of the second layer.

(Item 8) The golf club head according to item 1, wherein the inner peripheral surface of the looped rib is filleted to the rear surface.

9. The first depth of the first cavity is about 0.125 inches, and the second depth of the second cavity is about 0.500 inches. The third depth of the third cavity at the toe end portion of 1 is about 0.225 inches, and the fourth depth of the fourth cavity at the second toe end portion The golf club head of clause 1, wherein is about 0.120 inches and the fifth depth of the fifth cavity at the heel end is about 0.080 inches.

(Clause 10) The tow ledge covers a portion of the rear surface, and the tow ledge is most pronounced at the first toe end, decreasing towards the second toe end The golf club head of clause 1, wherein the golf club head is substantially constant and increases slightly towards the third toe end portion.

(Article 11) A golf club head comprising a front end portion and a rear end portion, a front end portion and a rear end portion, a face surface located at the front end portion, and a rear surface located at the rear end portion Said face element comprising said rear face comprising a center and a rear rim; an upper end having a top rail extending in an arc towards the bottom end to form a top rail wall; and said upper end Divided into a bottom with a sole integrally formed with the rear portion extending upwardly towards the first toe end portion, a second toe end portion, and a third toe end portion The first toe end portion is adjacent to the upper end and is integrally formed with the upper end, and the third toe end portion is the toe end portion. Adjacent to the bottom end and integrally formed with said bottom end A second toe end portion is provided between the first toe end portion and the third toe end portion, the toe end comprising the top rail, the sole, and The toe end having a curved extending tulle towards the heel end, the torge being integrally formed with the top rail wall and the rear portion; A heel end comprising a heel ledge extending in a curved manner towards the top rail, the sole, and the toe end, the heel ledge comprising the top rail wall and the rear portion An undercut comprising the heel end and a first cavity, a second cavity, a third cavity, a fourth cavity, and a fifth cavity integrally formed therewith, the first cut comprising: A cavity is formed between the rear surface and the upper rear wall and has a first depth of 0.115 inches to 0.135 inches, and the second cavity includes the rear surface and the rear surface. Formed between the rear portion and having a second depth of 0.460 inches to 0.580 inches, the third cavity having the rear surface and the first toe end portion And a third depth in the range of 0.215 inches to 0.245 inches, and the fourth cavity is formed between the rear surface and the second toe. An end portion formed between the toroids and having a fourth depth in the range of 0.140 inches to 0.165 inches, the fifth cavity having the rear surface and the heel ledge. Formed between the parts, The undercut, wherein the fifth cavity has a fifth depth ranging from 0.080 inches to 0.110 inches.

12. The face element has a first thickness in the range of 0.088 inches to 0.100 inches, measured perpendicularly from the face center to the rear center of the face surface, the face element having a first thickness in the range of 0.088 inches to 0.100 inches. A second thickness, measured perpendicularly from the face surface to the back surface adjacent to the back center, and having a second thickness in the range of 0.088 inches to 0.100 inches; A third thickness in the range of 0.050 inches to 0.060 inches adjacent to the second thickness and adjacent to the second thickness, measured to the rear surface, the face element comprising: 11. The golf club head of clause 11, comprising a fourth thickness in the range of 0.050 inches to 0.070 inches at the trailing edge.

Clause 13: The golf club head of clause 11, wherein the cascading sole comprises a first layer and a second layer.

14. The first layer is proximal to the front end, the second layer is proximal to the rear end, and the first layer is to the second layer. The golf club head according to clause 11, which is transitioning.

Clause 15: The golf club head of clause 11, wherein the first layer comprises a thickness greater than the thickness of the second layer.

16. The first depth of the first cavity is about 0.125 inches, and the second depth of the second cavity is about 0.500 inches. The third depth of the third cavity at the toe end portion of 1 is about 0.225 inches, and the fourth depth of the fourth cavity at the second toe end portion 11. The golf club head of clause 11, wherein is about 0.120 inches and the fifth depth of the fifth cavity at the heel end is about 0.080 inches.

(Clause 17) All of the first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are integrally connected and continuous. 11. The golf club head according to clause 11.

(Article 18) The first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are separated by the dividing structure and discontinuous 11. The golf club head according to clause 11.

Clause 19: The golf club head of clause 11, wherein a weight can be disposed in the second cavity between the rear portion and the rear surface.

(Claim 20) The tow ledge covers a portion of the rear surface, and the tow ledge is most pronounced at the first toe end, decreasing towards the second toe end 11. The golf club head of clause 11, wherein the golf club head is substantially constant and increases slightly towards the third toe end portion.

21. A golf club head comprising a front end and a rear end, a toe end and a heel end, an upper end having a top rail extending from the toe end to the heel end, and an inner sole. A bottom with a sole comprising a face, the top rail extending in an arc shape away from the front end, towards the rear end and the bottom end, and a face element, at the front end And a rear surface located opposite the face surface, the rear surface defining a rear center, a reinforcing device located at the rear surface, and a rear surface and an undercut of the face element A face element having a recess located between the top rails, the undercut extending along the top rail from the toe end to the heel end, the reinforcing element having an outer peripheral surface and an inner peripheral surface The Comprising a loop rib, the outer peripheral edge surface of the reinforcing elements are fleshed corner against the rear surface, the golf club head.

22. The golf club head of clause 21, further comprising an internal radius transition from the back surface of the face element to the inner sole surface, the internal radius transition comprising a cascading sole.

23. The golf club head of clause 22, wherein the cascading sole comprises a first layer and a second layer.

Clause 24: The first layer is proximal to the front end, the second layer is proximal to the rear end, and the first layer transitions to the second layer. The golf club head described in.

Clause 25: The golf club head of clause 23, wherein the first layer comprises a thickness greater than the thickness of the second layer.

(Item 26) The golf club head according to item 21, wherein the looped rib comprises an oval looped rib or a circular looped rib.

27. The golf club head of clause 21, wherein the looped ribs comprise a plurality of looped ribs, each looped rib being concentric with one another.

  The golf club heads and related methods discussed herein may be implemented in various embodiments, and the preceding discussion of some of these embodiments is not necessarily a complete description of all possible embodiments. It is not always the case. Rather, the detailed description of the drawings, and the drawings themselves, disclose at least one preferred embodiment and may disclose alternative embodiments.

  Replacement of one or more claimed elements results in reconstruction rather than correction. In addition, benefits, other advantages, and solutions to the problem have been described with regard to specific embodiments. However, any benefit or benefit, a solution to the problem, and any one or more optional elements that can give rise to or be more pronounced as any benefit, benefit, or solution It is not intended that such benefits, advantages, solutions or elements be explicitly recited in such claims, or that all or all of the essential, necessary or essential features or elements be interpreted as such. As long as it should not be.

  The rules of golf may change from time to time (e.g. new rules adopted by golf standardization organizations and / or operating organizations such as the United States Golf Association (USGA), Royal and Ancient Golf Club of St. Andrews (R & A) etc. The golf equipment associated with the devices, methods, and products described herein may be subject to the rules of golf at any particular point in time, as the old rules may be abolished or amended). It may or may not be compliant. Accordingly, golf equipment associated with the devices, methods, and products described herein may be advertised, offered for sale, and / or sold as compliant or non-compliant golf equipment. is there. The devices, methods, and products described herein are not limited in this regard.

  Furthermore, the embodiments and / or limitations disclosed herein are not specifically claimed in the embodiments and / or limitations (1) in the claims, and (2) under the doctrine of equivalents. If it is, or is a potential equivalent of, the explicit elements and / or limitations in the claims, it will not be publicly available under the principles of public ownership.

Claims (20)

A golf club head,
Front end and rear end,
A face element,
A face surface located at the front end;
A rear surface located at the rear end, the rear center, a rear peripheral edge, and the rear surface comprising a reinforcement device;
Said face element comprising
An upper end having a top rail extending in an arc toward a bottom end to form a top rail wall;
A bottom having a sole integrally formed with a rear portion extending upwardly towards the upper end;
A toe end divided into a first toe end portion, a second toe end portion, and a third toe end portion,
The first toe end portion is adjacent to the upper end and is integrally formed with the upper end,
The third toe end portion is adjacent to the bottom end and is integrally formed with the bottom end;
The second toe end portion is provided between the first toe end portion and the third toe end portion;
The toe end includes a curved portion extending toward the top rail, the sole, and the heel end.
The tredge portion is integrally formed with the top rail wall and the rear portion.
The toe end,
A heel end comprising a heel ledge extending in a curved manner towards the top rail, the sole and the toe end, the heel ledge comprising the top rail wall and the rear portion; The heel end being integrally formed;
An undercut comprising a first cavity, a second cavity, a third cavity, a fourth cavity, and a fifth cavity, comprising:
The first cavity is formed between the rear surface and the upper rear wall and has a first depth of 0.115 inches to 0.135 inches.
The second cavity is formed between the back surface and the back portion and has a second depth of 0.460 inches to 0.580 inches.
The third cavity is formed between the rear surface and the tow ledge at the first toe end portion and has a third depth in the range of 0.215 inches to 0.245 inches. Yes,
The fourth cavity is formed between the back surface and the tow ledge at the second toe end portion and has a fourth depth ranging from 0.140 inches to 0.165 inches. Yes,
The fifth cavity is formed between the rear surface and the heel ledge, and the fifth cavity has a fifth depth ranging from 0.080 inches to 0.110 inches. ,
Said undercut,
A reinforcing element comprising a looped rib having an outer peripheral surface and an inner peripheral surface;
The golf club head, wherein the outer peripheral surface of the reinforcing element is filleted to the rear surface.   The golf club head according to claim 1, wherein the looped rib is symmetrical about the x axis or symmetrical about the y axis.   The device according to claim 1, wherein the first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are all integrally connected and continuous. Description golf club head.   The first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are separated by a dividing structure and discontinuous. The golf club head according to 1. The face element is measured perpendicularly from the face center of the face surface to the back center and comprises a first thickness in the range of 0.055 inches to 0.075 inches;
The face element comprises a second thickness ranging from 0.150 inches to 0.200 inches, measured perpendicularly from the apex of the reinforcement element to the face surface,
A third of the face element is measured perpendicularly from the face surface to the back surface adjacent to the back peripheral edge and the back center without the reinforcing device and in the range of 0.050 inches to 0.060 inches; With thickness
The golf club head of claim 1, wherein the face element comprises a fourth thickness in the range of 0.050 inches to 0.070 inches at the back edge. The golf club head further comprises a cascading sole at the bottom of the second cavity,
The golf club head of claim 1, wherein the cascading sole comprises a first layer and a second layer.   The golf club head of claim 6, wherein the first layer comprises a thickness greater than a thickness of the second layer.   The golf club head of claim 1, wherein the inner peripheral surface of the looped rib is filleted to the back surface. The first depth of the first cavity is about 0.125 inches,
The second depth of the second cavity is about 0.500 inches,
The third depth of the third cavity at the first toe end portion is approximately 0.225 inches;
The fourth depth of the fourth cavity at the second toe end portion is approximately 0.120 inches;
The golf club head of claim 1, wherein the fifth depth of the fifth cavity at the heel end is approximately 0.080 inches. The tredge portion covers a part of the rear surface,
The torge portion is most pronounced at the first toe end portion, decreases towards the second toe end portion and is substantially constant, and the third toe end portion The golf club head according to claim 1, wherein the golf club head slightly increases in the direction of. A golf club head,
Front end and rear end,
A face element,
A face surface located at the front end;
A rear surface located at the rear end, the rear surface comprising a rear center and a rear peripheral edge;
Said face element comprising
An upper end having a top rail extending in an arc toward a bottom end to form a top rail wall;
A bottom having a sole integrally formed with a rear portion extending upwardly towards the upper end;
A toe end divided into a first toe end portion, a second toe end portion, and a third toe end portion,
The first toe end portion is adjacent to the upper end and is integrally formed with the upper end,
The third toe end portion is adjacent to the bottom end and is integrally formed with the bottom end;
The second toe end portion is provided between the first toe end portion and the third toe end portion;
The toe end includes a curved portion extending toward the top rail, the sole, and the heel end.
The tredge portion is integrally formed with the top rail wall and the rear portion.
The toe end,
A heel end comprising a heel ledge extending in a curved manner towards the top rail, the sole and the toe end, the heel ledge comprising the top rail wall and the rear portion; The heel end being integrally formed;
An undercut comprising a first cavity, a second cavity, a third cavity, a fourth cavity, and a fifth cavity, comprising:
The first cavity is formed between the rear surface and the upper rear wall and has a first depth of 0.115 inches to 0.135 inches.
The second cavity is formed between the back surface and the back portion and has a second depth of 0.460 inches to 0.580 inches.
The third cavity is formed between the rear surface and the tow ledge at the first toe end portion and has a third depth in the range of 0.215 inches to 0.245 inches. Yes,
The fourth cavity is formed between the back surface and the tow ledge at the second toe end portion and has a fourth depth ranging from 0.140 inches to 0.165 inches. Yes,
The fifth cavity is formed between the rear surface and the heel ledge, and the fifth cavity has a fifth depth ranging from 0.080 inches to 0.110 inches. ,
Said undercut,
, A golf club head. The face element has a first thickness ranging from 0.088 inches to 0.100 inches, measured perpendicularly from the face center of the face surface to the rear center,
The face element is measured perpendicularly from the face surface to the back surface adjacent to the back center and comprises a second thickness in the range of 0.088 inches to 0.100 inches.
A third of the face elements is measured from the face surface to the back surface, adjacent to the second thickness, and adjacent to the back peripheral edge in a range of 0.050 inches to 0.060 inches. With thickness
The golf club head of claim 11, wherein the face element comprises a fourth thickness in the range of 0.050 inches to 0.070 inches at the back edge.   The golf club head of claim 11, wherein the cascading sole comprises a first layer and a second layer. The first layer is proximal to the front end,
The second layer is proximal to the aft end,
The golf club head of claim 11, wherein the first layer transitions to the second layer.   The golf club head of claim 11, wherein the first layer comprises a thickness greater than a thickness of the second layer. The first depth of the first cavity is about 0.125 inches,
The second depth of the second cavity is about 0.500 inches,
The third depth of the third cavity at the first toe end portion is approximately 0.225 inches;
The fourth depth of the fourth cavity at the second toe end portion is approximately 0.120 inches;
The golf club head of claim 11, wherein the fifth depth of the fifth cavity at the heel end is about 0.080 inches.   12. The device according to claim 11, wherein the first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are all connected together and continuous. Description golf club head.   The first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are separated by a dividing structure and discontinuous. 11. The golf club head according to 11.   The golf club head of claim 11, wherein a weight can be disposed in the second cavity between the rear portion and the rear surface. The tredge portion covers a part of the rear surface,
The torge portion is most pronounced at the first toe end portion, decreases towards the second toe end portion and is substantially constant, and the third toe end portion The golf club head according to claim 11, wherein the golf club head slightly increases in the direction of.

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