JP2022009184A - Golf club head with energy storage characteristics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf club head with energy storage characteristics.

SOLUTION: A golf club head 6000 comprises a hollow body including a strikeface 6012, a heel region, a toe region opposite the heel region, a sole 6006, a crown 6008, and a cavity 6030 disposed behind the strikeface of the club head and on the sole of the club head. In many embodiments, the cavity comprises a front surface 6046, and a rear surface 6048, where at least a portion of the front surface extends toward the strikeface of the club head.

SELECTED DRAWING: Figure 28

COPYRIGHT: (C)2022,JPO&INPIT

Description

(Mutual reference of related applications)
This application applies to US Provisional Application No. 62 / 206,152 filed on August 17, 2015, US Provisional Application No. 62 / 131,739 filed on March 11, 2015, 2015 1. US Provisional Application No. 62 / 105,460 filed on 20th March 2015, US Provisional Application No. 62 / 105,464 filed on 20th January 2015, and 24th October 2014. It is a partial continuation application of US Patent Application No. 14/920, 484 filed on October 22, 2015, claiming the benefit of US Provisional Application No. 62/068,232 filed. The present application further relates to US Provisional Patent Application No. 62 / 295,565 filed on February 16, 2016, and US Provisional Patent Application No. 62 / 313,215 filed on March 25, 2016. Claim the interests of the issue. All the contents of the disclosures described above are incorporated herein by reference in their entirety.

The present disclosure relates to golf clubs as a whole, and in particular to golf club heads having energy storage properties.

Golf club manufacturers design golf club heads to reduce stress on the ball striking surface of the golf club head. In many cases, these designs prevent the crown of the golf club head from bending towards the sole. Further, these designs are designed so that the position of the peak of bending of the golf club head in the golf club head due to the impact with the golf ball does not change and the spring energy is not additionally stored. The additional spring energy makes it possible to increase the ball velocity across the ball striking face.

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

The front crown side perspective view of the golf club head according to an embodiment is shown. The golf club head of FIG. 1 along the cross-sectional line II-II of FIG. 1 is shown. FIG. 3 shows a partial view of a golf club head similar to the golf club head of FIG. 1 along a cross-sectional line similar to the cross-sectional lines II-II of FIG. 1 according to another embodiment. FIG. 3 shows a partial view of a golf club head similar to the golf club head of FIG. 1 along a cross-sectional line similar to the cross-sectional lines II-II of FIG. 1 according to another embodiment. FIG. 3 shows a partial view of a golf club head similar to the golf club head of FIG. 1 along a cross-sectional line similar to the cross-sectional lines II-II of FIG. 1 according to another embodiment. FIG. 3 shows a partial view of a golf club head similar to the golf club head of FIG. 1 along a cross-sectional line similar to the cross-sectional lines II-II of FIG. 1 according to another embodiment. FIG. 6 shows a cross-sectional view of a golf club similar to the golf club head of FIG. 1 along a cross-sectional line similar to that of FIG. 1 VII-VII according to another embodiment. FIG. 6 shows a partial view of a golf club head similar to the golf club head of FIG. 4 according to an embodiment and a view of the same area of a standard golf club head. A method of manufacturing a golf club head according to an embodiment of the method is shown. The rear toe side perspective view of the golf club head according to an embodiment is shown. The rear heel side perspective view of the golf club head according to the embodiment of FIG. 10 is shown. FIG. 10 shows a cross-sectional view of the golf club head of FIG. 10 along the cross-sectional line XII-XII of FIG. FIG. 12 shows a partial view of the golf club head and a view of the same area of a standard golf club head. FIG. 5 shows a cross-sectional view of a golf club head similar to the golf club head of FIG. 10 along a cross-sectional line similar to the cross-sectional line XII-XII of FIG. 10 according to another embodiment. The rear toe side perspective view of the golf club according to another embodiment is shown. FIG. 15 shows a cross-sectional view of the golf club head of FIG. 15 along the cross-sectional line XVI-XVI of FIG. A flow chart showing a method of manufacturing a golf club head according to an embodiment of another method is shown. The front perspective view of the golf club according to another embodiment is shown. The results of the test of the golf club head of FIG. 14 according to another embodiment are shown. The results of the test of the golf club head of FIG. 14 according to another embodiment are shown. The cross-sectional view of the golf club head of FIG. 10 is shown. A rear perspective view of an exemplary golf club head according to another embodiment is shown. FIG. 22 shows a cross-sectional view of an exemplary golf club head. FIG. 23 shows an enlarged view of a part of a cross-sectional view of an exemplary golf club head. FIG. 22 shows a cross-sectional view of another exemplary golf club head according to the embodiment. FIG. 24 shows an enlarged view of a part of a cross-sectional view of an exemplary golf club head of FIG. 24. FIG. 22 shows a cross-sectional view of another exemplary golf club head according to the embodiment. FIG. 22 shows a rear perspective view of another exemplary golf club head according to the embodiment. FIG. 26 shows a cross-sectional view of an exemplary golf club head. FIG. 27 shows an enlarged view of a part of a cross-sectional view of an exemplary golf club head of FIG. 27. A cross-sectional view of another exemplary golf club head is shown. A cross-sectional view of another exemplary golf club head is shown. A cross-sectional view of another exemplary golf club head is shown.

For simplicity and clarity, the figures show general aspects of the structure, and well-known features and technical descriptions and details are omitted to prevent unnecessarily obscuring the golf club and its manufacturing process. I have something to do. Furthermore, the members in the figure are not necessarily drawn to scale. For example, the dimensions of some members in the figure are exaggerated relative to other members to help improve the embodiment of the golf club and its manufacturing process. The same reference numbers in different figures indicate the same member.

Terms such as "first", "second", "third" and "fourth" in the specification and claims are used to distinguish between similar members, if any. It does not necessarily describe a specific order or chronological order. The term as such is used in appropriate circumstances such that the embodiments of the golf club and manufacturing method described herein can be operated, for example, in an order other than that described or described herein. It is understood below that they are interchangeable with each other. In addition, the terms "contain", "include" and "have" and their variations are intended to include non-exclusive inclusion, and processes, methods, articles or devices comprising a list of components are not necessarily these. It is not limited to such members, and may include other members that are not explicitly indicated or are inherent in such processes, methods, articles or devices.

When there are terms such as "left", "right", "front", "rear", "top", "bottom", "side", "bottom", "top" in the description and claims. Is used for explanatory purposes and does not necessarily explain a permanent relative position. The term used in this way is appropriate such that the embodiments of the golf club and manufacturing method described herein can be operated in orientations other than those described or described herein, for example. It is understood below that they are interchangeable with each other. The term "connected" as used herein provides for direct or indirect connection, physically, mechanically or otherwise.

(Explanation of Examples of Embodiment)
Various embodiments of a golf club head provided with a stepped inner thin wall include a golf club head having a body. The body has a striking surface, a heel region, a toe region facing the heel region, a sole, a crown, and an inner diameter transition region from the striking surface to at least one of the sole or the crown. In many embodiments, the inner diameter transition region is not visible from the outside of the golf club head and has a first stage, a second stage, and a stage transition region between the first and second stages.

Another embodiment of a golf club head provided with a stepped inner thin wall portion includes a golf club having a golf club head and a shaft connected to the golf club head. The golf club head has a hitting surface, a heel region, a toe region facing the heel region, a sole, a crown, and an inner diameter transition region from the hitting surface to at least one of the sole or the crown. In many embodiments, the inner diameter transition region is not visible from the outside of the golf club head and has a first stage, a second stage, and a stage transition region between the first and second stages.

Another embodiment of a golf club head provided with a stepped inner thin wall portion includes a method of manufacturing a golf club head. This method involves preparing the body. The body has a ball striking surface, a heel region, a toe region facing the heel region, a sole, and a crown. The method further comprises preparing an inner diameter transition region from the ball striking face to at least one of the sole or crown. The inner diameter transition region is invisible from the outside of the golf club head and has a first stage, a second stage, and a stage transition region between the first stage and the second stage. In many embodiments, the first stage has a first thickness, the second stage has a second thickness, and the second thickness is thinner than the first thickness.

Various embodiments include golf club heads having a hollow body. The hollow body has a ball striking surface, a heel region, a toe region facing the heel region, a sole, and a crown. In many embodiments, the crown comprises an upper region with a top rail and a lower region. In some embodiments, the cavity is located below the top rail and above the lower region of the crown, at least in part defined by the upper and lower regions of the crown. In many embodiments, the cavity has a top wall, a back wall, a bottom slope, a back cavity angle measured between the top wall and the back wall of the cavity, and at least one channel.

Some embodiments include a golf club having a hollow body golf club and a shaft connected to a hollow body golf club head. The hollow body golf club head has a ball striking surface, a heel region, a toe region facing the heel region, a sole, and a crown. In many embodiments, the crown comprises an upper region with a top rail and a lower region. In some embodiments, the cavity is located below the top rail and above the lower region of the crown, at least in part defined by the upper and lower regions of the crown. In many embodiments, the cavity has a top wall, a back wall, a bottom slope, a back cavity angle measured between the top wall and the back wall of the cavity, and at least one channel.

Other embodiments include methods of manufacturing golf club heads. In many embodiments, the method comprises preparing the body. The body has a ball striking face, a heel region, a toe region facing the heel region, a sole, and a crown. The crown comprises an upper area with a top rail and a lower area. In some embodiments, the cavity is placed under the top rail and above the lower region of the crown, at least in part defined by the upper and lower regions of the crown. In many embodiments, the cavity is at least the top wall, the back wall adjacent to the top wall, the bottom slope adjacent to the back wall, and the back cavity angle measured between the top and back walls of the cavity. It has one channel.

Other examples and embodiments are further disclosed herein. Such embodiments and embodiments can be found in the drawings, claims and / or herein.

I. Golf Club Head with Cascade Sole Moving to the drawing, FIG. 1 shows an embodiment of the golf club head 100. The golf club head 100 can be a wood type golf club head. For example, the golf club head 100 may be a fairway wood type golf club head, a driver type golf club head, a hybrid type golf club head, or an iron type golf club head. The golf club head 100 has a body 101. The body 101 has a ball striking surface 112, a heel region 102, a toe region 104, a sole 106, and a crown 108. In FIG. 1, the body 101 further has a skirt 110 extending between the sole 106 and the crown 108. In some embodiments, the body 101 does not have a skirt 110 or any skirt. FIG. 18 shows a front perspective view of the golf club 1800 according to an embodiment. In some embodiments, the golf club 1800 has a golf club head 100 and a shaft 190.

In some embodiments, the body 101 is a stainless steel, titanium, aluminum, alloy steel (eg, 455 steel, 475 steel, 431 steel, 17-4 stainless steel, maraging steel), titanium alloy (eg, Ti7-). 4, Ti6-4, T-9S), aluminum alloys, or composite materials can be used. In some embodiments, the ball striking face 112 is a stainless steel, titanium, aluminum, alloy steel (eg, 455 steel, 475 steel, 431 steel, 17-4 stainless steel, maraging steel), titanium alloy (eg, Ti7). -4, Ti6-4, T-9S), aluminum alloys, or composite materials can be used. In some embodiments, the body 101 can have the same material as the ball striking face 112. In some embodiments, the body 101 can have a different material than the ball striking face 112.

FIG. 2 shows a cross section of the golf club head 100 along the cross section line II-II of FIG. 1 according to one embodiment. FIG. 2 shows an inner diameter transition portion 210 from the ball striking face 112 to the sole 106 according to one embodiment. The inner diameter transition 210 can have a smooth transition, or the inner diameter transition 210 can have at least two steps or a cascade sole with a height of thickness. For example, the inner diameter transition portion 210 may include a cascade sole having 2, 3, 4, 5, 6 or 7 steps. In some embodiments, the inner diameter transition can provide greater bending of the ball striking face 112. In some embodiments, the increase in bending or deflection of the striking surface 112 can tolerate approximately 1% to approximately 3% more energy due to the deflection of the striking surface 112.

In many embodiments, the inner diameter transition portion 210 is not visible from the outside of the golf club head 100. FIG. 2 further shows a top inner diameter transition portion 260 from the ball striking face 112 to the crown 108. In some embodiments, the top inner diameter transition 260 can have a smooth transition, while in other embodiments the top inner diameter transition 260 has at least two steps or thickness heights. Can have. For example, the top inner diameter transition portion 260 can have 2, 3, 4, 5, 6 or 7 steps or thickness heights. In some embodiments, the golf club head 100 can have an inner sole thickness of 220. The inner sole thickness 220 can be thicker than the thinnest thickness of the inner diameter transition portion 210. In many embodiments, the inner sole thickness 220 is also thicker than the final step of the adjacent step or inner diameter transition section 210. In some embodiments, the inner sole thickness 220 can be thicker than the entire inner diameter transition 210.

In some embodiments, the inner diameter transition 210 is a sole anterior portion and / or a weight distribution as described in US Pat. No. 8,579,728, entitled "Golf Club Heads with Weight Redistribution Channels and Related Methods." It can be similar to a channel, and this patent is incorporated herein by reference.

In some embodiments, the golf club head can have a cascade transition region, a stepped transition region or an inner diameter transition region extending from the ball striking surface to at least one of a crown, heel, toe, sole or skirt. In some embodiments, the golf club head is a single stepped transition area ring that surrounds the perimeter of the golf club head, eg, extending from the ball striking face to each of the crown, toe area, heel area, and sole area. May have a continuous stepped transition region ring. In another embodiment, the golf club head has a stepped transition area only on the crown and / or sole. In some embodiments, the golf club head has a stepped transition area only in the toe and / or heel area. In another embodiment, the stepped transition region is located only from the ball striking face to the skirt. In another embodiment, the golf club head has a separate or separate stepped transition area from the ball striking face to the toe area of the crown, the heel area of the clan, the toe area of the sole and / or the heel area of the sole.

FIG. 3 shows a diagram of the inner diameter transition portion 310 of the golf club head 300 according to another embodiment similar to the golf club head of FIG. 1 along a cross-sectional line similar to the cross-sectional lines II-II of FIG. FIG. 4 shows a diagram of the inner diameter transition portion 410 of the golf club head 400 according to another embodiment similar to the golf club head of FIG. 1 along a cross-sectional line similar to the cross-sectional lines II-II of FIG. FIG. 5 shows a diagram of the inner diameter transition portion 510 of the golf club head 500 according to another embodiment similar to the golf club head of FIG. 1 along a cross-sectional line similar to the cross-sectional lines II-II of FIG.

As shown in FIG. 3, the inner diameter transition portion 310 can be the same as the inner diameter transition portion 210 (FIG. 2), and the golf club head 300 can be the same as the golf club head 100 (FIGS. 1 and 2). can. The inner diameter transition portion 310 includes a first stage 315 having a first thickness and a second stage 317 having a second thickness. In many embodiments, the thickness of each step is substantially constant. For example, the first thickness of the first stage 315 can have a first substantially constant thickness, and the second thickness of the second stage 317 can have a second substantially constant thickness. In another embodiment, the first stage 315 can have a first gradient, the first thickness of the first stage 315 is thicker closer to the ball striking face 312 and thinner closer to the step transition region 316. .. The step transition region 316 can have a step gradient that is steeper than the first slope of the first step 315. The stage transition region 316 is linearly inclined at an angle smaller than 90 degrees, and can transition from the first stage 315 to the second stage 317. In another embodiment, the stage transition region 316 can have a step of approximately 90 degrees, as shown in the stage transition regions 516 and 518 of FIG. The stage transition regions 516 (FIG. 5) and 518 (FIG. 5) can be the same as the stage transition regions 316 (FIG. 3) and the stage transition regions 416 (FIG. 4) and 418 (FIG. 4).

As shown in FIG. 4, in some embodiments, each stepped transition portion 316, 416, 418, 516, 518 can have a first arcuate surface 420 and a second arcuate surface 422. The first arcuate surface 420 has a first radius of curvature, and the second arcuate surface 422 has a second radius of curvature. The first radius of curvature and the second radius of curvature of each stepped transition section 316, 416, 418, 516, 518 can be the same, or the first stepped transition section 316, 416, 418, 516, 518. It is also possible to make the first radius of curvature and the second radius of curvature different. For example, the first radius of curvature of the first arcuate surface 420 can be the same as the second radius of curvature of the first arcuate surface 420, and the first radius of curvature of the first arcuate surface 420 is that of the first arcuate surface 420. It can be smaller than the second radius of curvature, or the first radius of curvature of the first arcuate surface 420 can be greater than the second radius of curvature of the first arcuate surface 420. Further, for example, the first radius of curvature of the second arcuate surface 422 can be the same as the second radius of curvature of the second arcuate surface 422, and the first radius of curvature of the second arcuate surface 422 is the second arcuate surface. It can be smaller than the second radius of curvature of the 422, or the first radius of curvature of the second arcuate surface 422 can be greater than the second radius of curvature of the second arcuate surface 422.

Further, each stepped transition section 316,416,418,516,518 can have the same first radius of curvature or a different first radius of curvature, and further, the stepped transition section 316,416,418,516,518. Each of can have the same second radius of curvature or a different second radius of curvature. For example, the first radius of curvature of the first arcuate surface 420 can be the same as the first radius of curvature of the second arcuate surface 422, and the first radius of curvature of the first arcuate surface 420 is that of the second arcuate surface 422. It can be smaller than the first radius of curvature, or the first radius of curvature of the first arcuate surface 420 can be greater than the first radius of curvature of the second arcuate surface 422. Further, for example, the second radius of curvature of the first arcuate surface 420 can be the same as the second radius of curvature of the second arcuate surface 422, and the second radius of curvature of the first arcuate surface 420 is the second arcuate surface. It can be smaller than the second radius of curvature of 422, or the second radius of curvature of the first arcuate surface 420 can be greater than the second radius of curvature of the second arcuate surface 422.

The inner diameter transition function (for example, inner stage transition portion 310, FIG. 3) can change the location where the bending peak of the golf club head occurs. The stepped transition region can generate a "plastic hinge" at the peak of bending to facilitate more localized deformation due to impact with the golf ball. In many embodiments, the buckling process begins at the peak position of the bend and the golf club head is optimized to remain just below the critical buckling threshold. The inner plastic hinge allows the club to flex more towards the crown and sole. The inner plastic hinge makes it possible to accurately control the bending position and the amount of bending of the crown and sole by using the stepping function.

The use of inner diameter transitions allows the stress of the golf club head to be distributed over more volumes of material and thus reduces local peak stress. In many embodiments, additional deflection from the crown to the sole allows the surface to flex further based on the same load. This additional deflection can generate more stress and bending on the surface of the club and more spring energy. The increase in spring energy can be stored in the golf club head due to the impact with the golf ball. In many embodiments, additional spring energy helps increase the speed of the ball. In some embodiments, the inner diameter transition can form a more overall bend within the golf club head, which can also lead to an increase in the speed of the ball. Better distance control is possible as the ball speed of the entire hitting surface increases. In some embodiments, the golf club head having the inner diameter transfer function can store about 4% to about 6% more energy, which can be returned to the golf ball.

Returning to FIG. 3, the inner diameter transition portion 310 can change the position where the bending peak 350 of the sole of the golf club head 300 occurs. Further, the inner diameter transition portion 310 allows more body of the club head 300 to engage in the bending process at impact from the golf ball. In some embodiments, the first stage 315 and the second stage 317 allow a portion of the stress generated by the impact of the ball striking surface 312 and the golf ball to be accumulated in each stage. This structure prevents stress from concentrating primarily on the thinnest part of the sole, allowing the golf club head 300 to be more reliable and durable. In many embodiments, this structure creates a plastic hinge facing the end of the ball striking face of the inner diameter transition portion 310, facilitating further localization of deformation at the position of the plastic hinge. In many embodiments, the plastic hinge can be placed at the bending peak, for example the bending peak 350. This structure can also allow more latent energy to be stored, for example in the crown and / or sole. In some embodiments, the body 301 can experience an increase in deflection or bending in the direction of the sole from the crown to the sole in the sole and crown by about 4% to about 7%. Additional deflection from the crown to the sole at the sole and / or crown can allow the ball striking surface 312 to further bend with the same load or impact from the golf ball. Therefore, this structure can generate more stress and bending on the ball striking surface 312 of the golf club head 300 that can be transmitted to the ball upon impact with the ball striking surface 312.

In some embodiments, each step has a substantially constant thickness throughout the step. In many embodiments, the first stage 315 is thicker than the second stage 317. In some embodiments of the driver type golf club head, the first stage 315 is about 0.030 inch (0.076 cm) to about 0.060 inch (0.152 cm) thick, or about 0. The thickness can range from 040 inches (0.102 cm) to about 0.050 inches (0.127 cm), and the second tier 317 is from about 0.020 inches (0.051 cm) to about 0.050 inches. It can be as thick as (0.127 cm), or from about 0.030 inch (0.076 cm) to about 0.040 inch (0.102 cm). In some embodiments of fairway wood type golf club heads, the first stage 315 is about 0.035 inches (0.089 cm) to about 0.065 inches (0.165 cm) thick, or about 0. The thickness is from .045 inches (0.114 cm) to about 0.055 inches (0.140 cm), and the second stage 317 is from about 0.025 inches (0.064 cm) to about 0.055 inches (0. It can be as thick as 140 cm) or from about 0.035 inches (0.089 cm) to about 0.045 inches (0.114 cm). In some embodiments of the hybrid type golf club head, the first stage 315 is about 0.050 inches (0.127 cm) to about 0.080 inches (0.203 cm) thick, or about 0. The thickness from 060 inches (0.152 cm) to about 0.070 inches (0.178 cm), the second stage 317 is from about 0.040 inches (0.102 cm) to about 0.070 inches (0.178 cm). The thickness can be from about 0.050 inches (0.127 cm) to about 0.060 inches (0.152 cm). In many embodiments of iron-type golf club heads, the first stage 315 is about 0.055 inch (0.140 cm) to about 0.085 inch (0.216 cm) thick, or about 0.060. The second tier 317 from inches (0.152 cm) to about 0.080 inches (0.203 cm) is about 0.045 inches (0.114 cm) to about 0.075 inches (0.191 cm) thick, or It can be from about 0.050 inches (0.127 cm) to about 0.070 inches (0.178 cm) thick.

In another embodiment as shown in FIG. 4, the inner diameter transition portion 410 can have more than two steps. For example, the inner diameter transition portion 410 may have 2, 3, 4, 5, 6, or 7 steps. The three-stage inner diameter transition portion 410 is formed in the same manner as the inner diameter transition portion 310 (FIG. 3), and has a first stage 415, a second stage 417, and a third stage 419. The first stage 415 can be made in the same manner as the first stage 315 in FIG. 3, and the second stage 417 can be made in the same manner as the second stage 317. In many embodiments, the bending peak 450 occurs further rearward from the ball striking face 412 as more steps are added to the inner diameter transition.

In many embodiments, the second tier 417 is thicker than the third tier 419. In some embodiments of the driver type golf club head, the third tier 419 is about 0.010 inches to about 0.040 inches (0.102 cm) thick, or about 0.020 inches (0. It is about 0.030 inches (0.076 cm) thick from 051 cm). In some embodiments of fairway wood type golf club heads, the third tier 419 is about 0.015 inches (0.038 cm) to about 0.045 inches (0.114 cm) thick, or about 0. It is from .025 inches (0.064 cm) to about 0.035 inches (0.089 cm) thick. In some embodiments of the hybrid type golf club head, the third tier 419 is about 0.030 inch (0.076 cm) to about 0.060 inch (0.152 cm) thick, or about 0. It is from 040 inches (0.102 cm) to about 0.050 inches (0.127 cm) thick. In some embodiments of iron-type club heads, the third tier 419 is from about 0.030 inches (0.076 cm) to about 0.060 inches (0.152 cm), or about 0.035 inches (0. It is about 0.055 inches (0.140 cm) thick from 089 cm).

On the other hand, referring to FIG. 5, in some embodiments of the driver type golf club head, the first tier 515 has a thickness of about 0.045 inches (0.114 cm) and the second tier 517 has a thickness of about 0. The thickness of the third stage 519 can be 035 inches (0.089 cm), and the thickness of the third stage 519 can be about 0.025 inches (0.064 cm). In some embodiments of the fairway wood type golf club head, the first tier 515 has a thickness of about 0.051 inch (0.130 cm) and the second tier 517 has a thickness of about 0.039 inch (0.099 cm). The thickness of the third stage 519 can be about 0.030 inches (0.076 cm). In some embodiments of the hybrid type golf club head, the first tier 515 can be about 0.067 inches (0.170 cm) thick and the second tier 517 can be about 0.054 inches (0.170 cm) thick. The thickness of the third stage 519 can be about 0.045 inches (0.114 cm). In some embodiments of iron-type golf club heads, the first tier 515 is about 0.067 inches (0.170 cm) thick and the second tier is about 0.057 inches (0.145 cm) thick. The thickness of the third step 519 can be about 0.042 inches (0.107 cm).

In some embodiments, the first stages 315,415,515 of FIGS. 3, 4 and 5, respectively, are the second stage lengths of the second stages 317, 417, 517 of FIGS. 3, 4 and 5, respectively. Can have a first stage length approximately equal to. In some embodiments, the first stage lengths of the first stages 315, 415, 515 of FIGS. 3, 4 and 5 are longer than the second stage lengths of the second stages 317, 417, 517, respectively. In another embodiment, the second stage lengths of the second stages 417 and 517 of FIGS. 4 and 5 are substantially equal to the third stage lengths of the third stages 419 and 519 of FIGS. 4 and 5, respectively. be able to. In some embodiments, the second stage lengths of the second stages 417 and 517 of FIGS. 4 and 5 are longer than the third stage lengths of the third stages 419 and 519 of FIGS. 4 and 5, respectively. be able to. In another embodiment, the second stage lengths of the second stages 417 and 517 of FIGS. 4 and 5 are shorter than the third stage lengths of the third stages 419 and 519 of FIGS. 4 and 5, respectively. Can be done.

Referring to FIGS. 3, 4 and 5, in some embodiments of a fairway wood type golf club head or a driver type golf club head or a hybrid type golf club head, the first stage 315,415,515 is The second stage 317,417,517 can have a first stage length of about 0.05 inch (0.127 cm) to about 0.80 inch (2.03 cm), and the second stage 317,417,517 is about 0.03 inch (0). It can have a second stage length of about 0.60 inches (1.52 cm) from .076 cm), and the third stage 419,519 is about 0.04 inches (0.102 cm) to about 0.70 inches. It can have a third step length of (1.78 cm). In some embodiments of iron-type golf club heads, the first tier 315,415,515 is a first tier length of about 0.03 inch (0.076 cm) to about 0.30 inch (0.762 cm). The second stage 317,417,517 can have a second stage length of about 0.04 inch (0.102 cm) to about 0.40 inch (1.02 cm). The third tier 419,519 can have a third tier length of about 0.05 inches (0.127 cm) to about 0.50 inches (1.27 cm).

As shown in FIGS. 3, 4 and 5, in some embodiments, the first and second arcuate planes of the stepped transitions 316, 416, 516 are the first stage 315, 415, 515 and the second. It is possible to have a first and second radius of curvature that is at least twice as large as the difference between the first thickness T ₁ and the second thickness T ₂ of the steps 317, 417, 517, respectively. In one embodiment, the first and second arcuate surfaces of the stepped transitions 316, 416, 516 have the first thickness T ₁ of the first step 315, 415, 515 and the second step 317, 417, 517, respectively. And have first and second radii of curvature about 6.5 times larger than the difference between the _second thicknesses T2. As shown in FIGS. 4 and 5, in some embodiments, the first and second arcuate planes of the stepped transitions 418,518 are the first of the second tiers 417,517 and the third tiers 419,519, respectively. It can have first and second radii of curvature that are at least twice as large as the difference between the _two thicknesses T2 and the _third thickness T3. In one embodiment, the first and second arcuate surfaces of the stepped transitions 418,518 are the _second and third thicknesses T2 and third of the second tiers 417,517 and the third tiers 419,519, respectively. It has first and _second radii of curvature about 6.5 times larger than the difference between T3.

As shown in FIG. 3, some embodiments, such as the golf club head 300, have a weight pad 330 that lowers the center of gravity of the golf club head 300. The weight pad 330 has a weight pad thickness 331 that is larger than the final step thickness 321 of the adjacent step. In this embodiment, the adjacent stage is the second stage 317. In many embodiments with a weight pad 330, the inner sole thickness 320 can be approximately equal to the final step thickness 321. In some embodiments, the inner sole thickness 320 can be thicker than the final step thickness 321. In some embodiments, the inner sole thickness 320 is thinner than the final step thickness 321.

As shown in FIG. 4, some embodiments, such as the golf club head 400, have ribs 440. The rib 440 can be arranged inside the body 401 and substantially parallel to the ball striking face. In many embodiments, the ribs 440 can be ridges or bars. In some embodiments, the rib 440 can have a third step thickness 421, an adjacent step thickness, or a rib thickness 441 that is thicker than the thickness of the final step of the inner diameter transition portion 410. The purpose of the rib 440 is to reinforce the sole of the golf club head 400, so that the sole bending peak occurs in the step transition region 416 and / or the step transition region 418.

Moving on to FIG. 6, in some embodiments, the golf club head 600 can have a crown inner diameter transition portion 660 in the crown 608. The crown inner diameter transition portion 660 is the same as the inner diameter transition portion 310 of FIG. 3, except that the crown inner diameter transition portion 660 is arranged on the striking surface for the crown transition portion instead of the striking surface for the sole transition portion. Can be done. In many embodiments, the first stage 615 can be similar to the first stages 315, 415 and / or 515 of FIGS. 3, 4 and 5, respectively, and the second stage 617 is FIG. 3, respectively. The second tiers 317, 417 and / or 517 of FIGS. 4 and 5 can be similar, and the third tier 619 can be the same as the third tiers 419 and / or 519 of FIGS. 4 and 5, respectively. The stage transition regions 616 and / or 618 can be similar to the stage transition regions 316, 416, 516, 418 and / or 518 of FIGS. 3, 4 and 5. Similarly, the crown inner diameter transition portion 660 has a plurality of inner diameter transition portions and can form more than two steps. For example, the crown inner diameter transition portion 660 can have 2, 3, 4, 5, 6 or 7 steps.

In FIG. 7, the golf club head 700 can have a skirt inner diameter transition portion 780, as shown in FIG. FIG. 7 shows a cross-sectional view of a golf club 700 similar to the golf club head 100 (FIG. 1) along a cross-sectional line similar to the cross-sectional line VII-VII of FIG. 1 according to another embodiment. The skirt inner diameter transition portion 780 can be the same as the inner diameter transition portion 210 (FIG. 2), and the first stage 715 is the first stage 315, 415 and / or 515 of FIGS. 3, 4 and 5, respectively. The same can be done, the second stage 717 can be the same as the second stage 317, 417 and / or 517 of FIGS. 3, 4 and 5, and the third stage 719 can be the same as those of FIGS. 4 and 5, respectively. The third stage 419 and / or 519 of FIG. 5 can be the same, and the stage transition regions 716 and / or 718 are the stage transition regions 316, 416, 516, 418 and / or 518 of FIGS. 3, 4 and 5. Can be similar to. Similarly, the skirt inner diameter transition portion 780 can have more than two steps. For example, the skirt inner diameter transition portion 780 can have 2, 3, 4, 5, 6 or 7 steps. As shown in FIG. 7, the golf club head 700 can also have a skirt inner diameter transition portion on the other side portion of the ball striking surface 712. In another embodiment, the golf club head 700 may have a skirt inner diameter transition on one side of the ball striking face 712.

FIG. 8 shows a partial view of a golf club head 800 similar to the golf club head 400 (FIG. 4) according to an embodiment, and a view of the same area of a standard golf club head 850. The standard golf club head 850 has a uniform sole thickness 855 from the ball striking face 852 to the sole 856 and an inner sole weight 870 that is thicker than the uniform sole thickness 855. The golf club head 800 has an inner diameter transition portion 810 similar to the inner diameter transition portion 410 (FIG. 4). The inner diameter transition portion 810 is the same as the first stage 815 similar to the first stage 415 (FIG. 4), the second stage 817 similar to the second stage 417 (FIG. 4), and the same as the third stage 419 (FIG. 4). The third stage 819 and the like can be provided. The inner diameter transition portion 810 can further have a stage transition region 816, 818 similar to the stage transition regions 416 (FIG. 4) and 418 (FIG. 4), and an inner sole weight 820 similar to the inner sole weight 870. .. In many embodiments, at least one of the first tier 815, the second tier 817 or the third tier 819 can be thinner than the uniform sole thickness 855. The step thickness can eliminate weights that can be redistributed later to the club head.

Higher stress is more dispersed over the larger area of the sole 806 with the inner diameter transition region 810 than the sole 856 without the cascade sole. In many embodiments, the overall curvature of the sole, similar to the uniform sole thickness 855, can absorb a greater specific concentration of impact force from the golf ball in a particular area, but force over a larger area. Does not disperse. Cascade structures (or steps whose thickness changes along the inner diameter transition), such as the inner diameter transition, however, the wavy or step structure exerts the next greater stress from one inner diameter region of a particular thickness. To convey, it provides the technology to "package" the impact force from a golf ball over a larger area. In many embodiments, there is stress bleeding, overflow or retention across the inner diameter transition 810 or the cascade thin-walled sole. A greater dispersion of greater stress forms a greater recoil force on the striking surface. By storing stress in the inner diameter transition portion 810, it is possible to prevent all of the stress from being directly collected in the thinnest step. In many embodiments, the stepping function can help disperse the stress along the sole and prevent one large stress concentration from occurring. Instead, there are numerous stress concentrations for a more even distribution of stress. Stresses are extended along the cascade sole, allowing the sole to act (or absorb) more stress. However, the stress is reduced at the thickest part of the sole without the cascade sole, experiencing the highest levels of stress, and exerting a smaller bounce force on the ball striking face.

Embodiments of golf club heads with cascade soles (eg, 100, 300, 400, 500, 600 or 700) were tested in comparison to similar control club heads without cascade soles. A club head with a cascade sole is approximately 0.5 to 1.5 miles per hour (mph) (0.8 to 2.4 kilometers per hour (kph)), or approximately 0, compared to a control club head. It showed an increase in ball speed of .5-0.9%. The increase in ball velocity with respect to the impact at the center is about 0.5 to 1.0 mph (0.8 to 1.6 mph), and the increase in ball velocity with respect to the impact off the center is about 1 to 1.5 mph (1. It was 6 to 2.4 kph). A club head with a cascade sole also has an increase in launch angle of about 0.1-0.3 degrees, a decrease in spin of about 275-315 revolutions per minute (rpm), and a decrease in spin compared to a control club head. , Showed an increase in carry distance of about 3-6 yards (2.7-5.5 meters).

In some embodiments, the golf club head having a driver-type, hybrid-type or wood-type cascade sole (eg, 100, 300, 400, 500, 600, or 700) further comprises a first crown thickness (eg, 100, 300, 400, 500, 600, or 700). It may have a second crown thickness (not shown) and a second crown thickness (not shown). The first crown thickness may be located at the crown on the back of the ball striking face or at the crown inner diameter transition. The second crown thickness may be located on the crown at the back of the first crown thickness towards the rear of the club head. The first crown thickness is thicker than the second crown thickness. Further, the first crown thickness may gradually shift towards the second crown thickness according to any outer shape, or the first crown thickness may be the second crown thickness, for example, as in a staircase. It may shift rapidly to.

The first crown thickness may have any portion of the crown at the front end of the club head. For example, the first crown thickness is 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, or any of the crowns at the front end of the club head. It may have a portion. The second crown thickness may have any portion of the crown at the rear of the club head. For example, the second crown thickness may have 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80% or any portion of the rear of the club head. ..

The crown thickness may shift between the first crown thickness and the second crown thickness at any portion of the crown of the club head, defining a crown thickness transition. The crown thickness transition portion may have any shape. In an exemplary embodiment, the crown thickness transition defines a bell-shaped curve similar to the bell-shaped curve of US Pat. No. 7,892,111, which is incorporated herein by reference. To. The first crown thickness is located on the crown between the ball striking face and the bell-shaped curve, and the second crown thickness is located between the bell-shaped curve and the rear of the club head.

In an exemplary embodiment, when the golf club head is a fairway wood type golf club head, the first crown thickness is about 0.022 inch (0.056 cm) and the second crown thickness is about 0. It is 019 inches (0.048 cm). Further, in an exemplary embodiment, when the golf club head is a hybrid type golf club head, the first crown thickness is about 0.024 inch (0.061 cm) and the second crown thickness is about 0. It is .019 inches (0.048 cm).

In other embodiments of fairway wood type or hybrid type golf club heads, the first crown thickness is approximately 0.029 (0.074), 0.028 (0.071), 0.027 (0.069). ), 0.026 (0.066), 0.025 (0.064), 0.024 (0.061), 0.023 (0.058), 0.022 (0.056), 0.021 Thinner than (0.053), 0.020 (0.051), 0.019 (0.048), 0.018 (0.046), or 0.017 (0.043) inch (cm), The thickness of the second crown is about 0.024 (0.061), 0.023 (0.058), 0.022 (0.056), 0.021 (0.053), 0.020 (0. 051), 0.019 (0.048), 0.018 (0.046), 0.017 (0.043), 0.016 (0.041), 0.015 (0.038), 0. It may be thinner than 014 (0.036), 0.013 (0.033), or 0.012 (0.031) inches (cm).

The crown inner diameter transitions dissipate and / or reduce the stress on the crown of the club head, thereby reducing the thickness of the first and second crowns as compared to the previous design. In an exemplary embodiment, the first crown thickness is reduced by about 17.2 to 24.1% and the second crown thickness is reduced by about 20.8% as compared to the previous design. The reduction in the thickness of the first and second crowns allows for a lower center of gravity of the club head (located closer to the sole) compared to the previous design. Lowering the center of gravity of the club head improves the performance characteristics of the club head by reducing the gearing and spin of the ball.

Moving to FIG. 9, various embodiments of the golf club head provided with the stepped inner thin wall portion include a method 900 for manufacturing a golf club head. Method 900 comprises preparing the body (block 910). The body has a ball striking face, a heel region, a toe region facing the heel region, a sole, and a crown. In some embodiments, the body further has a skirt extending from the crown to the sole. Method 900 further comprises providing an inner diameter transition from the ball striking face to at least one of the sole, crown or skirt (block 920). The method 900 further provides a first stage of the inner diameter transition portion (block 930), a second stage of the inner diameter transition portion (block 940), and a first stage and a second stage of the inner diameter transition region. It includes providing a stage transition region between the two (block 950). In some embodiments, the blocks 910, 920, 930, 940 and 950 can be run simultaneously with each other, such as by casting the body of a club head. In other embodiments, one or more of blocks 920, 930, 940 and / or 950 can be performed after block 910, as an example, throughout the machining process.

II. Golf Club Head with Back Cavity In one embodiment, the golf club head has a back cavity located in the upper crown area of the golf club. In many embodiments, the back cavity can provide a box-spring effect when hitting a golf ball. The back cavity can be combined with a change in the thickness of the inner diameter of the sole of the club head (cascade sole) to provide a spring-like effect.

Some embodiments are directed to club heads (hybrid or fairway woods or irons with a hollow design) that feature a hollow structure club head that provides a more "iron-like" look and feel. In some embodiments, the golf club head can be characterized by a flat ball striking face and an iron-like profile, which can provide improved workability and accuracy similar to irons. can. Located below the top rail of the club head, the back cavity along the lower crown is designed for hybrids, fairway woods and irons with a hollow structure. The back cavity may be the entire channel from the heel to the toe, just below the top rail of the club head and along the top crown or rear. The top rail and cavity may be of any design. In some embodiments, the cavity has an angle of about 90 degrees to provide a targeted hinge point in the crown region of the golf club head. This hinge or buckling area absorbs greater impact force over a large volume area of the top rail and springboards with greater recoil force returning to the ball striking face when the cavity and top rail return to their original position. This allows a greater force to be applied to the ball. The large club surface deflection due to this cavity design reduces spin, increases the loft angle of the golf ball at impact, and allows the ball speed to be faster at the same club speed than a standard golf club head. ..

In a standard hybrid club head, the top rail and upper crown area do not have a cavity of this design. In comparison with the present disclosure, there is less bending or bending of the ball striking face in such a standard hybrid club head. Since the standard hybrid does not have a cavity, less energy is transmitted to the top rail of the club, so a large springback effect cannot be obtained. The golf club head with the disclosed back cavity allows it to absorb the greater impact force of the golf ball and then return it to the ball striking face. In many embodiments, the angle of the cavity can provide a buckling point, or a plastic hinge, or a target hinge for the ball striking face to flex more than a standard golf club.

The recoil effect of the cavity on the ball striking face is (1) the same club with and without a club head with an upper crown cavity (or back cavity) due to some degree to the spring effect transmitted from the hinge region to the ball striking surface to the ball. Higher golf ball speed relative to head speed, (2) the hinge point at the top of the cavity reacts to the greater force absorbed by the club and instead transfers more force to the ball, which causes the ball to hit. Less spin of the golf ball after impact with the club, due to some extent being prevented from spinning backwards from the surface, (3) the hinge and ball striking surface acting as a diving board or catapult on the ball. Provides a larger loft angle for the golf ball at impact due to. In some embodiments, the cavity can increase ball velocity by about 1.0-1.2% and launch angle by about 0.4-0.7 degrees.

Moving to the figure, FIG. 10 shows a rear toe side perspective view of the embodiment of the golf club head 1000, and FIG. 11 shows a rear heel side perspective view of the golf club head 1000 according to the embodiment of FIG. The golf club head 1000 can be a hybrid type golf club head. In another embodiment, the golf club head 1000 can be an iron type golf club head or a fairway wood type golf club head. In many embodiments, the golf club head 1000 does not have a badge or tailor-made port.

The golf club head 1000 has a body 1001. In many embodiments, the body is hollow. In some embodiments, the body is at least partially hollow. The body 1001 has a ball striking surface 1012, a heel region 1002, a toe region 1004 facing the heel region 1002, a sole 1006, and a crown 1008. The crown 1008 has an upper region 1011 and a lower region 1013. The upper region 1011 has a top rail 1015. In some embodiments, the top rail 1015 can be a flat, higher top rail or skirt. Explain why a flat and higher top rail increases playability from the tee against miss hits on the ball striking face 1012.

In some embodiments, the body 1001 is a stainless steel, titanium, aluminum, alloy steel (eg, 455 steel, 475 steel, 431 steel, 17-4 stainless steel, maraging steel), titanium alloy (eg, Ti7-). 4, Ti6-4, T-9S), aluminum alloys, or composite materials can be used. In some embodiments, the ball striking face 1012 is a stainless steel, titanium, aluminum, alloy steel (eg, 455 steel, 475 steel, 431 steel, 17-4 stainless steel, maraging steel), titanium alloy (eg, Ti7). -4, Ti6-4, T-9S), aluminum alloys, or composite materials can be used. In some embodiments, the body 1001 can have the same material as the ball striking face 1012. In some embodiments, the body 1001 can have a different material than the ball striking face 1012.

In many embodiments, the cavity 1030 is located below the top rail 1015. In many embodiments, the cavity 1030 has a top box spring design. In many embodiments, the top rails 1015 and cavities 1030 provide an increase in overall bending of the ball striking face 1012. In some embodiments, bending the ball striking face 1012 can tolerate an increase in energy of about 2% to about 5%. The cavity 1030 allows the ball striking face 1012 to be thinner and allows for additional overall bending. For some fairway wood type golf club head embodiments, the cavity 1030 can be a reverse scoop or dent on the crown 1008 that is thicker towards the sole 1006.

Referring to FIG. 10, in some embodiments, the golf club head 1000 can further have an insert 1062 in the lower region 1013 of the crown 1008 near the toe region 1004. Some embodiments have an internal weight on the sole 1006. In many embodiments, the insert 1062 may include tungsten or other high density material. In many embodiments, the insert moves the center of gravity (CG) backwards from the ball striking face 1012 by about 0.04 inch (1 mm) to 0.10 inch (2.5 mm) and launches from 3.5%. Increased by 5.5%, which can increase the playability of high or low miss hits from the tee.

In many embodiments, the CG is in the lower region 1013 of the crown 1008, near the intersection of the toe region 1004 and the sole 1006. In some embodiments, the CG of the golf club head 1000 is 0.597 inches along the CGy plane and 0.541 inches along the CGz plane. For the moment of inertia Ixx, the golf club head 1000 increased by 20.5% over the G30 iron and 28% over the Rapture DI. For Iy, it was 1.7% higher than the G30 iron and 22% higher than the Rapture DI.

In some embodiments, about 3 grams (g) to about 4 g are added to the top rail 1015. In most embodiments, the total mass of the golf club head 1000 remains the same. In some embodiments, mass can be removed from the sole 1006 or toe region 1004 to offset the addition of mass to the top rail 1015. In some embodiments, a mass of about 3 g to about 4 g can be added to the top rail 1015 to support the golf club head that resists rotation. In some embodiments, the CG of the golf club head is slightly elevated.

FIG. 12 shows a cross section of the golf club head 1000 along the cross section line XII-XII of FIG. 10 according to one embodiment. As shown in FIG. 12, the striking surface 1012 has a high region 1076, a medium region 1074, and a low region 1072. In many embodiments, the upper region 1011 of the crown 1008 is of the posterior wall 1023, the apex wall 1017 of the cavity 1030 below and adjacent to the posterior wall 1023, and the cavity 1030 below and adjacent to the apex wall 1017. It has a rear wall 1019 and.

In some embodiments, the height 1280 of the rear wall 1023 of the upper region 1011 of the crown 1008 is from about 0.125 inches (0.318 cm) to about 0.75 inches (1.91 cm), or about 0. It can be from 150 inches (0.381 cm) to about 0.400 inches (1.02 cm). For example, in some embodiments, the height 1280 of the rear wall 1023 of the upper region 1011 of the crown 1008 is approximately 0.175 inches (0.445 cm), 0.275 inches (0.699 cm), 0.375 inches. It can be (0.953 cm), 0.475 inches (1.21 cm), 0.575 inches (1.46 cm), or 0.675 inches (1.71 cm). In some embodiments, the height 1280 of the rear wall 1023 of the upper region 1011 of the crown 1008 can be from about 5% to about 25% of the height of the golf club head 1000. In some embodiments, the length of the top rail 1015 can be from about 70% to about 95% of the length of the golf club head 1000, measured from the heel area 1002 to the toe area 1004.

The height 1280 of the rear wall 1023 of the upper region 1011 of the crown 1008 prevents the cavity 1030 from absorbing at least a portion of the stress of the ball striking face 1012 upon impact with a golf ball, as described herein. Make it possible. Golf club heads with a rear wall higher than the rear wall height 1280 described herein will increase the distribution of impact along the top rail prior to reaching the cavity, and thus the golf described herein. It absorbs less stress at impact than the club head 1000 (and can reduce the deflection of the ball striking face).

In some embodiments, the cavity 1030 is located above the lower region 1013 of the crown 1008, at least partially defined by the upper region 1011 and the lower region 1013 of the crown 1008. The cavity 1030 has a top wall 1017, a rear wall 1019, and a bottom sloping portion 1021. A first bending point 1082 is located between the top wall 1017 of the cavity 1030 and the rear wall 1019 of the cavity. The second bending point 1086 is located between the rear wall 1019 of the cavity 1030 and the bottom sloping portion 1021.

In some embodiments, the height of the rear wall 1019 is from about 0.010 inches (0.25 mm) to about 0.138 inches (3.) as measured from the first bend point 1082 to the second bend point 1086. 5 mm), or from about 0.010 inch (0.25 mm) to about 0.059 inch (1.5 mm). For example, the height of the rear wall 1019 is about 0.01 inches (0.25 mm), 0.02 inches (0.5 mm), 0.03 inches (0.75 mm), 0.04 inches (1.0 mm). , 0.05 inch (1.25 mm), 0.06 inch (1.5 mm), 0.07 inch (1.75 mm), 0.08 inch (2.0 mm), 0.09 inch (2.25 mm) , 0.10 inch (2.5 mm), 0.11 inch (2.75 mm), 0.012 inch (3.0 mm), 0.13 inch (3.25 mm), or 0.14 inch (3. 5 mm). In many embodiments, the apex of the apex wall 1017 is below the apex of the apex rail 1015, from about 0.125 inches (0.318 cm) to about 1.25 inches (3.18 cm), or about 0.25. It can range from an inch (0.635 cm) to about 1.25 inches (3.18 cm). For example, the apex of the top wall 1017 is below the top rail 1015, about 0.125 inches (0.318 cm), 0.25 inches (0.635 cm), 0.375 inches (0.953 cm), 0.5. Inches (1.27 cm), 0.625 inches (1.59 cm), 0.75 inches (1.91 cm), 0.825 inches (2.10 cm), 1.0 inches (2.54 cm), 1.125 It can be inches (2.88 cm) or 1.25 inches (3.18 cm).

In many embodiments, the rear wall 1019 of the cavity 1030 can be substantially parallel to the ball striking face 1012. In other embodiments, the rear wall 1019 is not practically parallel to the ball striking face 1012. In many embodiments, the top wall 1017 of the cavity tilts towards the ball striking face 1012 as it moves towards the first bending point 1082. This arrangement of the top wall 1017 creates buckling points or hinge points or plastic hinges that direct the stress of impact towards the cavity 1030, allowing increased deflection of the ball striking face 1012 during impact.

The lower region 1013 of the crown 1008 has a bottom slope 1021 of the cavity 1030. In many embodiments, the second bend point 1086 is adjacent to the bottom slope 1021 and below the apex of the top rail 1015, at least about 0.25 inches (0.635 cm) to about 2.0 inches (5). It can be .08 cm), or from about 0.5 inch (1.27 cm) to about 1.5 inch (3.81 cm). For example, the second bend point 1086 is below the apex of the top rail 1015, at least about 0.25 inches (0.635 cm), 0.5 inches (1.27 cm), 0.75 inches (1.91 cm), and more. 1.0 inch (2.53 cm), 1.25 inch (3.18 cm), 1.5 inch (3.81 cm), 1.75 inch (4.45 cm) or 2.0 inch (5.08 cm) can do. In some embodiments, the maximum height of the bottom slope is measured from the sole 1006 of the club head 1000 to the second flexion point 1086, 1006 above the bottom point of the sole, at least about 0.25 inches (. It can range from about 0.635 cm) to about 3 inches (about 7.62 cm), or from about 0.50 inches (1.27 cm) to about 2 inches (5.08 cm). For example, the second flexion point 1086 is above the bottom point of the sole, at least about 0.25 inches (0.635 cm), 0.375 inches (0.953 cm), 0.5 inches (1.27 cm). 0.625 inch (1.59 cm), 0.75 inch (1.91 cm), 0.825 inch (2.10 cm), 1.0 inch (2.54 cm), 1.125 inch (2.88 cm), 1.25 inches (3.18 cm), 1.375 inches (3.49 cm), 1.5 inches (3.81 cm), 1.625 inches (4.12 cm), 1.75 inches (4.45 cm), 1.875 inches (4.76 cm), 2.0 inches (5.08 cm), 2.125 inches (5.40 cm), 2.25 inches (5.71 cm), 2.375 inches (6.03 cm), 2.5 inches (6.35 cm), 2.625 inches (6.67 cm), 2.75 inches (7.00 cm), 2.875 inches (7.30 cm), or 3.0 inches (7.62 cm) ).

Cavity 1030 further has at least one channel 1039 (FIG. 10). In many embodiments, channel 1039 extends from the heel region 1002 to the toe region 1004. The channel width 1032 (FIG. 12) can be substantially constant through channel 1039. In some embodiments, the channel width 1032 (FIG. 12) ranges from about 0.008 inch (0.2 mm) to about 1 inch (25 mm), or from about 0.008 inch (0.2 mm) to about 0.31. It can be inches (8 mm). For example, the channel width 1032 is approximately 0.008 inch (0.2 mm), 0.016 inch (0.4 mm), 0.024 inch (0.6 mm), 0.031 inch (0.8 mm), 0. 039 inches (1.0 mm), 0.079 inches (2 mm), 0.12 inches (3 mm), 0.16 inches (4 mm), 0.20 inches (5 mm), 0.24 inches (6 mm), 0. It is 28 inches (7 mm), 0.31 inches (8 mm), 0.39 inches (10 mm), 0.59 inches (15 mm), 0.79 inches (20 mm), or 0.98 inches (25 mm). In another embodiment, the channel toe region width of channel 1039 is smaller than the channel heel region of the channel. In other embodiments, the channel heel region width is smaller than the channel toe region width. In other embodiments, the channel center region width of channel 1039 can be smaller than at least one of the channel heel region width or the channel toe region width. In other embodiments, the channel center region width can be smaller than at least one of the channel heel region width or the channel toe region width. In some embodiments, channels 1039 are symmetric. In other embodiments, channel 1039 is asymmetric. In other embodiments, channel 1039 can further have at least two partial channels. In some embodiments, channel 1039 can have a series of partial channels blocked by one or more bridges. In some embodiments, the bridge may be approximately the same as the thickness of the upper region 1011 of the crown 1008.

As shown herein, the channel width 1032 is capable of absorbing stress from the ball striking face 1012 at impact. A golf club head having a channel width narrower than the channel width described herein (eg, a golf club head having an unclear cavity) can absorb less stress from the ball striking face at impact (in the upper region 1011 of the crown 1008). (Because of less material), therefore, the ball striking face receives less deflection than the golf club head 1000 described herein.

In many embodiments, the cavity 1030 further has a back cavity angle of 1035. The back cavity angle is measured between the top wall 1017 and the back wall 1019 of the cavity 1030. In many embodiments, the back cavity angle 1035 can be from about 70 degrees to about 110 degrees. In some embodiments, the back cavity angle 1035 can be from about 80 degrees to about 100 degrees. In some embodiments, the back cavity angle 1035 is about 70,75,80,85,90,95,100, or 110 degrees. In many embodiments, the back cavity angle 1035 provides a buckling point or a plastic hinge or a target hinge at the top rail hinge point 1070 when the golf club head 1000 impacts the golf ball. In some embodiments, the wall thickness at the top rail hinge point 1070 is thinner than at the top wall 1017 of the cavity 1030.

FIG. 13 shows a view in which the crown 1008 in the cross section of the golf club head 1000 of FIG. 12 is arranged parallel to the cavityless golf club head 1200 along the similar cross section line XII-XII of FIG. In many embodiments, the golf club head 1000 has a rear angle of 1040, a top rail angle of 1045, and a ball striking angle of 1050. The upper region angle 1040 is measured from the top wall 1017 of the upper region 1011 to the rear wall 1023. In many embodiments, the rear angle 1040 can be from about 70 degrees to about 110 degrees. In some embodiments, the rear angle 1040 is about 90 degrees. The top rail angle 1045 is measured from the rear wall 1023 of the upper region 1011 to the top rail 1015. In many embodiments, the top rail angle 1045 can be from about 35 degrees to about 120 degrees, or from 70 degrees to about 110 degrees. In some embodiments, the top rail angle 1045 is about 35,40,45,50,55,60,65,70,75,80,85,90,95,100,105,110,115, or It can be 120 degrees. The hitting surface angle 1050 is measured from the hitting surface 1012 to the top rail 1015. In many embodiments, the ball striking angle 1050 can be from about 70 degrees to about 160 degrees, or from 70 degrees to about 110 degrees. In some embodiments, the ball striking angle 1050 is about 70,75,80,85,90,95,100,105,110,115,120,125,130,135,140,145,150,155, Or it is 160 degrees.

Referring to FIG. 13, in some embodiments, the minimum gap 1090 between the ball striking face 1012 and the rear wall 1019 is from about 0.079 inches (2 mm) to about 0.39 inches (10 mm). For example, the minimum gap 1090 between the ball striking face 1012 and the rear wall 1019 is approximately 0.079 inch (2 mm), 0.16 inch (4 mm), 0.24 inch (6 mm), 0.31 inch (8 mm). Alternatively, it can be 0.39 inch (10 mm). In some embodiments, the minimum clearance 1090 between the ball striking face 1012 and the rear wall 1019 is less than about 0.55 inches (14 mm), less than 0.47 inches (12 mm), about 0.39 inches (10 mm). Less than, less than about 0.31 inch (8 mm), less than about 0.24 inch (6 mm), or less than about 0.16 inch (4 mm). Further, in some embodiments, the maximum gap between the ball striking surface 1012 and the rear wall 1023 of the upper region 1011 of the golf club head 1000 is greater than the minimum gap 1090. Further, in some embodiments, the maximum gap between the ball striking surface 1012 of the lower region 1013 of the golf club head 1000 and the bottom inclined portion 1021 is larger than the minimum gap 1090 and the maximum gap of the upper region 1011.

FIG. 21 shows a cross-sectional view of the golf club head 1000 similar to the cross section of the golf club head 1000 shown in FIG. The golf club head 1000 has a cavity 1030, an upper region 1011 and a lower region 1013. The upper region 1011 has an upper outer rear wall 1023, the cavity 1030 has a cavity outer wall 1025, and the lower region 1013 has a lower outer wall 1027. In many embodiments, the maximum top distance 1092 measured vertically from the ball striking face 1012 to the rear wall 1023 of the top region 1011 can be about 0.20 to 0.59 inches (5 to 15 mm). For example, the maximum top distance 1092 is about 0.20 inch (5 mm), 0.24 inch (6 mm), 0.28 inch (7 mm), 0.31 inch (8 mm), 0.35 inch (9 mm), 0. .39 inches (10 mm), 0.43 inches (11 mm), 0.47 inches (12 mm), 0.51 inches (13 mm), 0.55 inches (14 mm), or 0.59 inches (15 mm). .. Further, the minimum cavity distance 1094 measured vertically from the ball striking face 1012 to the cavity outer wall 1025 can be about 0.16 to 0.47 inches (4 to 12 mm). For example, the minimum cavity distance 1094 is about 0.16 inch (4 mm), 0.20 inch (5 mm), 0.24 inch (6 mm), 0.28 inch (7 mm), 0.31 inch (8 mm), 0. It is .35 inches (9 mm), 0.39 inches (10 mm), 0.43 inches (11 mm), or 0.47 inches (12 mm). Further, the maximum lower distance 1096 measured vertically from the ball striking face 1012 to the lower outer wall 1027 can be about 0.98 to 1.57 inches (25 to 40 mm). For example, the maximum bottom distance 1096 is about 0.98 inch (25 mm), 1.02 inch (26 mm), 1.06 inch (27 mm), 1.10 inch (28 mm), 1.14 inch (29 mm), 1 .18 inch (30 mm), 1.22 inch (31 mm), 1.26 inch (32 mm), 1.30 inch (33 mm), 1.34 inch (34 mm), 1.38 inch (35 mm), 1.42 It is inches (36 mm), 1.46 inches (37 mm), 1.50 inches (38 mm), 1.54 inches (39 mm), or 1.57 inches (40 mm). In many embodiments, the maximum bottom distance 1096 is greater than the maximum top distance 1092 and the maximum top distance 1092 is greater than the minimum cavity distance 1094.

In many embodiments, the cavity 1030 can increase the speed of the golf ball more than the golf club head 1200 or other standard golf club heads, slow down the spin speed of the standard hybrid club heads, and standard hybrids. And the launch angle can be increased more than the iron club head. In many embodiments, the shape of the cavity 1035 determines the level of the spring and the response timing of the golf club head 1000. When the golf ball impacts the ball striking surface 1012 of the club head 1000 having the cavity 1030, the ball striking surface 1012 springs back in a drum shape and the crown 1008 bends in a controlled collapse mode. In many embodiments, the top rail 1015 can absorb more stress over a larger volumetric space than the top rail of a golf club head without a cavity 1030. The length, depth and width of the cavity 1030 can be varied. These parameters control how much springback is provided in the overall design of the club head 1000.

When impacting a golf ball, the ball striking face 1012 can bend inward to a greater distance than a golf club without a cavity 1030. In some embodiments, the ball striking face 1012 has about 10% to about 50% more deflection than the ball striking face of a golf club head without a cavity 1030. In some embodiments, the ball striking face 1012 has about 5% to about 40%, or about 10% to about 20% more deflection than the ball striking face of a golf club head without a cavity 1035. For example, the ball striking surface 1012 has about 5%, 10%, 15%, 20%, 25%, 30%, 35%, or 40% more deflection than the ball striking surface of a golf club head without a cavity 1035. Can have. In many embodiments, both the pull-in distance by the hitting surface 1012 due to the hinge and the bending of the cavity 1030 are greater than the standard hitting surface without the back of the club without the cavity.

In many embodiments, the club head 1000 with the cavity 1030 has a greater surface deflection due to greater buckling along the top rail hinge point 1070 when impacting the golf ball. However, the cavity 1030 provides a large stress distribution along the top rail hinge point 1070 of the top rail, and the springback force is transmitted from the cavity 1030 and the top rail 1015 to the ball striking face 1012. A standard top rail without cavities does not have this hinge / buckling effect, nor does it have a high level of stress absorption over the large volume area of the top rail. Therefore, the standard striking surface does not have as many contacts and recoils as the striking surface 1012. In addition, both the large region of the ball striking face 1012 and the top rail 1015 absorb more stress than the same crown region of a standard golf club head with a standard top rail and no cavity. In many embodiments, there is greater stress along the larger area above the cavity 1030 than in the same area in a standard club without a cavity, but the durability of the club head with and without the cavity. Is the same. By adding a larger spring to the rear end of the club (due to the inward tilt of the apex wall 1017 towards the ball striking face 1012), a greater force is transferred over the entire volume of the structure. Stress is observed over the larger area of the ball striking face 1012 of the golf club head 1000 and the top rail 1015. Peak stress can be seen with a standard top rail club head. However, more peak stress is found in the golf club head 1000, but is dispersed over a large volume of material. The hinge and bending regions of the golf club head 1000 (ie, the region above the cavity 1030 and the cavity 1030 itself) do not deform unless the stress reaches the critical buckling threshold. The cavity 1030 and its movement can be designed to be below the critical K value of the buckling threshold.

22-30 are other implementations of golf club heads 2000, 3000, 4000, 5000, 6000, 7000, 8000 with cavities 2030, 3030, 4030, 5030, 6030, 7030, 8030 for increased surface deflection. Various examples of morphology are shown. Referring to FIGS. 26 and 27, the golf club head 2000 has a ball striking face 2012 and a body 2001. The body 2001 includes a heel region 2002, a toe region 2004 facing the heel region 2002, a sole 2006, a crown 2008 facing the sole 2006, a front end 2010, a rear end 2011 facing the front end 2010, and a cavity 2030. , Have.

In many embodiments, the golf club head 2000 is a hollow body type golf club head such as a hybrid type golf club head, a fairway wood type golf club head, or a driver type golf club head. In some embodiments, the golf club head 2000 can be an iron type club head, or at least partly hollow, similar to the club head 1000 described above.

In an embodiment in which the club head 2000 is a driver type club head, the loft angle of the club head 2000 can be less than 16 degrees, less than 15 degrees, less than 14 degrees. Can be less than 13 degrees, can be less than 12 degrees, can be less than 11 degrees, or can be less than 10 degrees. Moreover, in many embodiments, the volume of the club head 2000 can be greater than 400 cc, greater than 425 cc, greater than 450 cc, and greater than 475 cc. , Can be greater than 500 cc, can be greater than 525 cc, can be greater than 550 cc, can be greater than 575 cc, can be greater than 600 cc, can be greater than 625 cc Can be greater than 650 cc, can be greater than 675 cc, or can be greater than 700 cc.

In an embodiment where the club head 2000 is a fairway wood type club head, the loft angle of the club head 2000 can be less than 35 degrees, less than 34 degrees, less than 33 degrees. Can be less than 32 degrees, can be less than 31 degrees, or can be less than 30 degrees. Further, the loft angle of the club head 2000 can be greater than 12 degrees, greater than 13 degrees, greater than 14 degrees, greater than 15 degrees, and so on. Can be greater than 16 degrees, can be greater than 17 degrees, can be greater than 18 degrees, can be greater than 19 degrees, or can be greater than 20 degrees. can. In these embodiments, the volume of the club head 2000 can be less than 400 cc, less than 375 cc, less than 350 cc, less than 325 cc, 300 cc. Can be smaller than, can be smaller than 275 cc, can be smaller than 250 cc, can be smaller than 225 cc, or can be smaller than 200 cc. Further, in these embodiments, the volume of the club head can be 300 cc to 400 cc, 325 cc to 400 cc, 350 cc to 400 cc, 250 cc to 400 cc, 250 to 350 cc, or 275 to 375 cc.

In an embodiment where the club head 2000 is a hybrid type club head, the loft angle of the club head 2000 can be less than 40 degrees, less than 39 degrees, less than 38 degrees. Can be smaller than 37 degrees, can be smaller than 36 degrees, can be smaller than 35 degrees, can be smaller than 34 degrees, can be smaller than 33 degrees. Can be less than 32 degrees, can be less than 31 degrees, or can be less than 30 degrees. Further, the loft angle of the club head 2000 can be greater than 16 degrees, greater than 17 degrees, greater than 18 degrees, greater than 19 degrees, and more. Can be greater than 20 degrees, can be greater than 21 degrees, can be greater than 22 degrees, can be greater than 23 degrees, can be greater than 24 degrees, and can be greater than 24 degrees. Alternatively, it can be greater than 25 degrees. In these embodiments, the volume of the club head 2000 can be less than 200 cc, less than 175 cc, less than 150 cc, less than 125 cc, 100 cc. Can be smaller than, or can be smaller than 75cc. Further, in these embodiments, the volume of the club head can be 100 cc to 150 cc, 75 cc to 150 cc, 100 cc to 125 cc, or 75 cc to 125 cc.

In an embodiment in which the club head 2000 is an iron type club head, the loft angle of the club head 2000 can be less than 35 degrees, less than 30 degrees, less than 29 degrees. Can be less than 28 degrees, can be less than 27 degrees, can be less than 26 degrees, can be less than 25 degrees, or can be less than 24 degrees can do. Further, the loft angle of the club head 2000 can be greater than 12 degrees, greater than 13 degrees, greater than 14 degrees, greater than 15 degrees, and so on. It can be greater than 16 degrees, can be greater than 17 degrees, or can be greater than 18 degrees. In these embodiments, the volume of the club head 2000 can be less than 100 cc, less than 75 cc, less than 60 cc, less than 55 cc, or , Can be smaller than 50 cc. Further, in these embodiments, the volume of the club head can be 25 cc to 75 cc, 25 cc to 50 cc, 40 cc to 60 cc, 45 cc to 60 cc, or 40 cc to 50 cc.

In many examples, the cavity 2030 can be described in relation to the ground plane 2058, the front surface 2060, and the loft plane 2064 when the club head is in the address position. At the address position, the hosel axis (not shown) extending centrally through the hosel 2066 is located at an angle of 60 degrees to the ground plane 2058 when viewed from the front and relative to the ground plane 2058 when viewed from the side. It is located at a 90 degree angle. The front surface 2060 is adjacent to the foremost point of the club head 2000 and is located at right angles to the ground plane 2058. The loft surface 2064 is located in contact with the geometric center of the ball striking face 2012.

Referring to FIGS. 26 and 27, in the illustrated embodiment, the cavity 2030 is located behind the ball striking face 2012 on the sole 2006 of the club head. In these or other embodiments, the cavity 2030 can provide the ability to reduce the impact stress on the hitting surface 2012 and reduce the hitting surface thickness. Further, in these or other embodiments, the cavity 2030 can increase the ballistic deflection at impact with the golf ball, increasing the ball velocity and distance traveled. In another embodiment, the cavity 2030 can be located on any suitable area of the club head 2000, such as the sole 2006, crown 2008, or a combination of sole 2006 and crown 2008. For example, in another embodiment, the cavity 2030 can be located above the crown 2008 of the club head 2000. Further, for example, the cavity 2030 can be located on at least a portion of the ball striking face 2012 near the sole 2006. Further, for example, the cavity 2030 can be located on both the crown 2008 and the sole 2006 of the club head 2000.

In many examples, the cavity 2030 extends from near the heel portion 2002 of the club head 2000 to near the toe portion 2004. Further, in many examples, the cavity 2030 can be centered between the heel portion 2002 and the toe portion 2004 of the club head 2000. In another example, the cavity 2030 can extend any distance along the club head 2000 from the heel portion 2002 to the toe portion 2004. Furthermore, in another example, the cavity 2030 can be offset towards the heel portion 2002 of the club head 2000 or offset towards the toe portion 2004.

In another example, the cavity 2030 can have multiple separate parts (not shown). For example, the cavity can have a first cavity (not shown) located near the toe portion 2004 of the club head and a second cavity portion (not shown) located near the heel portion 2002 of the club head. .. In these examples, the cavity 2030 has any number of individual parts, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or any other number of individual parts. Can be done.

The cavity 2030 is further adjacent to the front edge 2046 adjacent to the nearest crown 2008 and / or sole 2006 of the front end 2010 of the club head 2000 and the nearest crown 2008 and / or sole 2006 to the rear end 2011 of the club head 2000. It has a rear edge 2048 and a rear edge 2048. Further, the cavity 2030 has a length extending from the heel portion 2002 to the toe portion 2004, the outer surface 2052, the inner surface 2054, and the thickness 2056 measured as the minimum distance between the outer surface 2052 and the inner surface 2054. In the illustrated example of FIGS. 26 and 27, the thickness 2056 of the cavity 2030 is substantially constant from near the front edge 2048 to near the rear edge 2048 of the cavity 2030. Further, in the illustrated example of FIGS. 26 and 27, the thickness 2056 of the cavity 2030 is substantially constant from near the heel portion 2002 of the club head 2000 to near the toe portion 2004. In another example, the thickness 2056 of the cavity 2030 can vary from near the front edge 2046 of the club head 2000 to near the rear edge 2048 according to any contour. Furthermore, in another example, the thickness 2056 of the cavity 2030 can vary from near the heel portion 2002 of the club head 2000 to near the toe portion 2004 according to any contour.

Referring to FIGS. 26 and 27, the cavity 2030 further has a main portion 2038 and an inset portion 2036. The main portion 2038 of the cavity 2030 extends inward from the sole 2006 of the club head 2000 between the front edge 2046 and the rear edge 2048. The inset portion 2036 extends from the main portion 2038 of the cavity 2030 toward the ball striking face 2012. In many embodiments, the main portion 2038 and the inset portion 2036 are formed by a plane formed by a plurality of axes 2047 extending through the front edge 2046 at each position along the length of the cavity, parallel to the loft plane 2064. Be separated. In many embodiments, each position along the length of the cavity can be defined in increments of about 0.1 inch in length. In other embodiments, each position along the length of the cavity is incremented by a length less than 0.100 inches, a length less than 0.075 inches, or a length less than 0.050 inches. Can be defined by.

The inset portion 2036 increases the deflection of the hitting surface at the time of impact with a golf ball as compared with a club head having a cavity without an inset portion. Further, the inset portion 2036 disperses stress over a wider range at the time of impact with the golf ball as compared to a club head having a cavity without an inset portion. In many embodiments, the greater dispersion of stress in the golf club head by the inset portion 2036 prevents stress concentration from occurring at the front edge 2046 or trailing edge 2048 of the cavity 2030.

In many embodiments, the cavity 2030 is offset from the loft surface 2064 of the club head 2000 or the ball striking face 2012. In some embodiments (FIG. 26), the front edge 2046 of the cavity 2030 can be offset from the loft surface 2064 or ballistic surface 2012 by a certain distance extending from near the heel region 2002 to near the toe region 2004. .. In another embodiment (not shown), the front edge 2046 of the cavity 2030 can be offset from the loft surface 2064 or the ball striking face 2012 by a variable distance extending from near the heel region 2002 to near the toe region 2004. For example, in another embodiment, the front edge 2046 of the cavity 2030 near the center of the ball striking face 2012 is greater than the front edge 2046 of the cavity 2030 near the heel region 2002 and / or near the toe region 2004 of the club head 2000. It can be located near the ball striking face 2012.

In many embodiments, at least a portion of the front edge 2046 of the cavity 2030 is offset from the loft surface 2064 or ballistic surface 2012 by a distance 2049 of 1.0 inches or less, measured in a direction perpendicular to the loft surface 2064. Can be done. In another embodiment, at least a portion of the front edge 2046 of the cavity 2030 is measured in a direction perpendicular to the loft surface 2064, 0.75 inch or less, 0.50 inch or less, 0.45 inch or less, 0.40 inch or less, 0.35 inch or less, 0.30 inch or less, 0.25 inch or less, 0.20 inch or less, 0.15 inch or less, 0.10 inch or less, or 0.05 inch or less Only a distance of 2049 can be offset from the loft surface 2064 or the ball striking face 2012. For example, in many embodiments, at least a portion of the front edge 2046 of the cavity 2030 is measured in a direction perpendicular to the loft plane 2064, by a distance between 0.025 and 0.075 inches. Alternatively, it is offset from the ball striking face 2012.

In many embodiments, the location of at least a portion of the front edge 2046 of the cavity 2030 near the face of the ball striking face is compared to a similar club head having a cavity with a front edge located farther from the ball striking face. Thus, the internal energy stored by the club head 2000 during impact can be increased and thus the energy transfer to the golf ball can be increased. Increasing the energy transfer to the golf ball allows for an increase in ball speed and distance traveled.

For example, in one embodiment, locating at least a portion of the front edge 2046 of the cavity 2030 at an offset distance of 2049, 0.05 inches from the ball striking face, measured in a direction perpendicular to the loft surface 2064. The internal energy stored in the club head 2000 was increased by about 8.6% compared to the club head that did not have. Further, for example, in one embodiment, at least a portion of the front edge 2046 of the cavity 2030 may be located at an offset distance of 2049, 0.10 inches from the ball striking face, measured in a direction perpendicular to the loft surface 2064. The internal energy stored in the club head 2000 was increased by about 2.9% compared to the club head having no cavity. In these examples, a club head with a cavity having a front edge located 0.05 inches from the ball striking face 2012 is compared to a club head having a cavity having a front edge located 0.10 inches from the ball striking face 2012. It stored about 5.6% more internal energy at impact with the golf ball. Therefore, locating the front edge 2046 of the cavity 2030 closer to the ball striking face 2012 increases the internal energy stored in the club head 2000 at the time of impact with the golf ball, increases the energy transfer to the ball, and the ball speed. Allows for an increase in travel distance and an increase in travel distance.

With reference to FIGS. 26 and 27, the cavity 2030 can be further described with respect to the anterior-posterior cross section. The front-rear cross section is taken on a plane extending from the front end 2010 of the club head 2000 toward the rear end 2011 and located at right angles to the ground plane 2058 and the front end 2060. The anterior-posterior section can be located anywhere along the length of the cavity. For example, FIG. 27 shows a cross-sectional view of a club head along a plane located at the midpoint of the cavity 2030.

Referring to FIGS. 26 and 27, when the cavity 2030 is located on the sole 2006, the cavity 2030 further has a vertex axis 2068. The vertex axis 2068 is located at an offset distance of 2076 from the front surface. The offset distance 2076 of the cavity 2030 can be constant, or the offset distance 2076 of the cavity 2030 can vary from the heel portion 2002 to the toe portion 2004 of the club head 2000.

The vertex axis 2068 defines the deepest portion or maximum depth 2074 of the cavity 2030 at each position along the length of the cavity 2030 extending from the heel portion 2002 to the toe portion 2004. The maximum depth 2074 of the cavity 2030 located on the sole 2006 is measured from the front edge 2046 to the apex axis 2068 in a direction parallel to the loft plane 2064. The maximum depth 2074 of the cavity 2030 can be constant, or the maximum depth 2074 of the cavity 2030 can vary from the heel portion 2002 of the club head 2000 to the toe portion 2004. For example, the maximum depth 2074 of the cavity 2030 in the anterior-posterior section taken at the midpoint of the cavity 2030 is the maximum depth of the cavity 2030 in the anterior-posterior section taken near the heel 2002 or near the toe 2004 of the club head 2000. It can be different from the 2074.

Referring to FIGS. 26 and 27, the cavity 2030 further has a front surface 2078 and a back surface 2080. The front surface 2078 extends from the front edge 2046 of the cavity 2030 to the apex axis 2068. The back surface 2048 extends from the apex axis 2048 of the cavity 2030 to the trailing edge 2048. Therefore, the front surface 2078 and the back surface 2080 are separated by the apex axis 2068 of the cavity 2030. Referring to FIGS. 26 and 27, at least a portion of the anterior surface 2078 of the cavity 2030 extends from near the front edge 2046 towards the ballistic surface 2012 in the direction towards the apex axis 2068. In these or other embodiments, at least a portion of the anterior surface 2078 of the cavity 2030 is directed towards the ball striking face 2012 to facilitate increased ballistic deflection and increased stress distribution across the cavity 2030 and the club head body 2001. Extends. The front surface 2078 can have any outer shape such that at least a part of the front outer shape extends toward the ball striking surface 2012 of the club head 2000. In many embodiments, a portion of the anterior surface 2078 extending towards the ball striking face 2012 forms an inset portion of the cavity 2030.

The front surface 2078 further has a front point 2082 and a rear point 2084 in any anteroposterior cross section of the club head 2000. The front point 2082 is located along the front surface 2060 or the nearest front surface 2078 of the ball striking face 2012, and the end point 2084 is located along the front surface 2078 farthest from the front surface 2060 or the ball striking surface 2012. The foremost point 2082 is located at the first distance D1 from the front surface 2060, and the last point 2084 is located at the second distance D2 from the front surface 2060. The second distance D2 is longer than the first distance D1 in at least one anteroposterior cross section of the cavity 2030. The first distance D1 and the second distance D2 can be constant, or the first distance D1 and the second distance D2 can vary from the heel portion 2002 to the toe portion 2004 of the club head 2000. For example, the first distance D1 of the cavity 2030 in the anterior-posterior section taken at the midpoint of the cavity 2030 is the first of the cavities 2030 in the anterior-posterior section taken near the heel portion 2002 or the toe portion 2004 of the club head 2000. It can be different from the distance D1. Further, for example, the second distance D2 of the cavity 2030 in the anterior-posterior section taken at the midpoint of the cavity 2030 is the cavity 2030 in the anterior-posterior section taken near the heel portion 2002 or the toe portion 2004 of the club head 2000. It can be different from the second distance D2. In many examples, the ratio of the second distance D2 to the first distance D1 is greater than 1.0, greater than 1.05, greater than 1.1, or 1 in at least a portion of the cavity 2030. Greater than .15, greater than 1.2, greater than 1.25, or greater than 1.3.

With reference to FIGS. 26 and 27, the shaft 2086 extends through the foremost point 2082 and the last point 2084 of the front surface 2078 of the cavity 2030. In the illustrated embodiment, the shaft 2086 intersects the ball striking face 2012 of the club head 2000. In many embodiments, the shaft 2086 intersects the ball striking face 2012 of the club head 2000 at an acute angle. Further, the shaft 2086 is located at an angle 2088 with respect to the loft surface 2064 of the club head 2000. In many embodiments, the angle 2088 is 0-90 degrees, 5-85 degrees, 10- It ranges from 80 degrees or 15 to 75 degrees. The angle 2088 can be constant or can vary from the heel portion 2002 of the club head 2000 to the toe portion 2004. For example, the angle 2088 of the cavity 2030 in the anterior-posterior section taken at the midpoint of the cavity 2030 is the angle 2088 of the cavity 2030 in the anterior-posterior section taken near the heel portion 2002 or the toe portion 2004 of the club head 2000. Can be different.

In many embodiments, the inset portion 2036 of the cavity has a height 2040 and a depth 2050. In the illustrated embodiment, the height 2040 of the inset portion 2036 measured parallel to the loft surface 2064 is constant from the heel portion 2002 to the toe portion 2004 of the club head 2000. In the illustrated embodiment, the height 2040 of the cavity 2030 can vary from near the front end 2010 of the club head 2000 to near the rear end 2011. For example, in the illustrated embodiment, the height 2040 of the cavity 2030 increases from near the front end 2010 of the club head 2000 to near the rear end 2011. In another embodiment, the height 2040 of the cavity 2030 can vary from near the front end 2010 of the club head 2000 to near the rear end 2011 according to any contour.

Further, the height 2040 of the inset portion 2036 can be increased or decreased according to an arbitrary outer shape from the heel portion 2002 of the club head to the toe portion 2004. For example, the height 2040 of the inset portion 2036 can be increased from the heel portion 2002 of the club head 2000 to the toe portion 2004. Further, for example, the height 2040 of the inset portion 2036 can be reduced from the heel portion 2002 of the club head 2000 to the toe portion 2004. Further, for example, the height 2040 of the inset portion 2036 can be increased from the center of the club head 2000 toward the heel portion 2002 and the toe portion 2004. Further, for example, the height 2040 of the inset portion 2036 can be reduced from the center of the club head 2000 toward the heel portion 2002 and the toe portion 2004.

In the illustrated embodiment, the depth 2050 of the inset portion 2036, measured as the distance between the front edge and the foremost point 2082 in a direction parallel to the loft surface 2064, is from the heel portion 2002 of the club head 2000 to the toe. It remains constant until part 2004. In another embodiment, the depth 2050 of the inset portion 2036 can be increased or decreased according to any outer shape from the heel portion 2002 of the club head 2000 to the toe portion 2004. For example, the depth 2050 of the inset portion 2036 can be increased from the heel portion 2002 of the club head 2000 to the toe portion 2004. Further, for example, the depth 2050 of the inset portion 2036 can be reduced from the heel portion 2002 of the club head 2000 to the toe portion 2004. Further, for example, the depth 2050 of the inset portion 2036 can be increased from the center of the club head 2000 toward the heel portion 2002 and the toe portion 2004. Further, for example, the depth 2050 of the inset portion 2036 can be reduced from the center of the club head 2000 toward the heel portion 2002 and the toe portion 2004.

In the illustrated embodiment of FIGS. 26 and 27, the outer shape of the front surface 2078 is unidirectional. Further, the front surface 2078 extends toward the apex axis 2068 of the cavity 2030 in the direction toward the ball striking face 2012. In these or other examples, the foreground point 2082 of the anterior surface 2078 is located near the apex axis 2068 of the cavity 2030 and the end point 2084 is located near the front edge 2046 of the cavity 2030. In other embodiments, the anterior contour can be multidirectional and has any contour such that at least a portion of the anterior surface extends toward the apex axis of the cavity in the direction towards the ball striking face 2012. can.

In the illustrated embodiment of FIGS. 26 and 27, the back surface 2080 of the cavity 2030 is substantially straight. In another embodiment, the back surface 2080 of the cavity 2030 can have any shape.

In another example, the cavity 2030 has a main portion 2038 of the cavity 2030 extending inward from the sole 2006 of the club head 2000 and an inset portion 2036 extending from the main portion 2038 of the cavity 2030 toward the rear end 2011 of the club head 2000. Can be oriented as such. In these examples, the front surface 2078 can have any outer shape, and at least a portion or the back surface 2080 can extend towards the rear end 2011 of the club head 2000.

22 and 23 show another embodiment of the club head 3000 having a ball striking face 3012 and a body 3001. The body 3001 includes a heel region and 3002, a toe region 3004 facing the heel region 3002, a sole 3006, a crown 3008 facing the sole 3006, a front end 3010, a rear end 3011 facing the front end 3010, and a cavity 3030. And have. The club head 3000 can be similar to the club head 2000 having the same number with reference to similar features, except that the front surface 3078 of the cavity 3030 is multidirectional. In these or other embodiments, the anterior surface 3078 extends from the front edge 3046 of the cavity 3030 to the apex axis 3068 in multiple directions, and thus at least a portion of the anterior surface 3078 extends toward the ball striking face 3012.

With reference to FIGS. 22-25, 28, and 29, in these or other examples, the cavity 3030 has an inset portion 3036 and further with a side wall 3032 extending from the front edge 3046 to the cavity 3030. It can have an inner wall 3034 extending from the trailing edge 3048 to the cavity 3030. The inset portion 3036 is located at a first angle 3042 with respect to the side wall 3032 and is located at a second angle 3044 with respect to the inner wall 3034. In the illustrated embodiment, the first angle 3042 is about 90 degrees. In other embodiments, the first angle 3042 can be in the range of about 85-95 degrees, about 80-100 degrees, or about 75-105 degrees. Further, in the illustrated embodiment, the second angle 3044 is about 90 degrees. In other embodiments, the second angle 3044 can be in the range of about 85-95 degrees, about 80-100 degrees, or about 75-105 degrees.

In these embodiments, the cavity 3030 of the club head 3000 has a main portion 2038, an inset portion 2036, a front edge 2046, and a main portion 3038 and an inset similar to the rear edge 2048, respectively, of the cavity 2030 of the club head 2000. It has a portion 3036, a front edge 3046, and a rear edge 3048. Further, the cavity 3030 of the club head 3000 has the apex axis 2068, the front surface 2078, and the apex axis 3068, the front surface 3078, and the back surface 3080 of the cavity 2030 of the club head 2000, respectively. Therefore, at least a portion of the front surface 3078 of the club head 3000 extends toward the ball striking face 3012.

FIG. 24 shows another embodiment of a club head 4000 having a ball striking face 4012 and a body 4001. The body 4001 includes a heel region 4002, a toe region 4004 facing the heel region 4002, a sole 4006, a crown 4008 facing the sole 4006, a front end 4010, a rear end 4011 facing the front end 4010, and a cavity 4030. Has. The club head 4000 is similar to a club head 3000 with the same number that references similar features, except that the cavity 4030 is behind the ball striking face 4012 and is located on the crown 4008 of the club head 4000. Can be done. In these or other embodiments, the cavity 4030 increases the ballistic deflection at impact with the golf ball, reduces reverse rotation, and / or increases the launch angle, with ball velocity and distance traveled. Can be increased. Further, in these or other embodiments, locating the cavity 4030 at least partially on the crown can further increase the bending of the ball striking face due to the impact of the ball striking face at a lower position.

Referring to FIG. 24, when the cavity 4030 is located on the crown 4008, the cavity 4030 further has a nadir axis 4072. The nadir shaft 4072 is located at an offset distance of 4076 from the front surface. The offset distance 4076 of the cavity 4030 can be constant, or the offset distance 4076 of the cavity 4030 can vary from the heel portion 4002 of the club head 4000 to the toe portion 4004.

The nadir axis 4072 defines the deepest portion or maximum depth 4074 of the cavity 4030 at each position along the length of the cavity 4030 extending from the heel portion 4002 to the toe portion 4004. The maximum depth 4074 of the cavity 4030 located on the crown 4008 is measured from the front edge 4046 to the nadir axis 4072 in a direction parallel to the loft plane 4064. The maximum depth 4074 of the cavity 4030 can be constant, or the maximum depth 4074 of the cavity 4030 can vary from the heel portion 4002 of the club head 4000 to the toe portion 4004. For example, the maximum depth 4074 of the cavity 4030 in the anterior-posterior section taken at the midpoint of the cavity 4030 is the maximum depth of the cavity 4030 in the anterior-posterior section taken near the heel 4002 or near the toe 4004 of the club head 4000. It can be different from the 4074.

Referring to FIG. 24, the cavity 4030 further has a front surface 4078 and a back surface 4080. The front surface 4078 extends from the front edge 4046 of the cavity 4030 to the nadir axis 4072. The back surface 4080 extends from the nadir axis 4072 of the cavity 4030 to the trailing edge 4048. Therefore, the front surface 4078 and the back surface 4080 are separated by the nadir axis 4072 of the cavity 4030. Referring to FIG. 24, at least a portion of the anterior surface 4078 of the cavity 4030 extends from near the front edge 4046 towards the nadir axis 4072 towards the ball striking face 4012. In these or other embodiments, at least a portion of the anterior surface 4078 of the cavity 4030 is directed towards the ball striking face 4012 to facilitate increased ballistic deflection and increased stress distribution across the cavity 4030 and the club head body 4001. Extend. The front surface 4078 can have any outer shape such that at least a part of the front outer shape extends toward the ball striking surface 4012 of the club head 4000. In many embodiments, a portion of the anterior surface 4078 extending towards the ball striking face 4012 forms an inset portion of the cavity 4030.

Referring to FIG. 24, the cavity 4030 further has a main portion 4038 and an inset portion 4036. The main portion 4038 of the cavity 4030 extends inward from the crown 4008 of the club head 4000 between the front edge 4046 and the rear edge 4048. The inset portion 4036 extends from the main portion 4038 of the cavity 4030 toward the ball striking surface 4012. In many embodiments, the main portion 4038 and the inset portion 4036 are planes formed by a plurality of axes 4047 extending parallel to the loft plane 4064 and through the front edge 4046 at each position along the length of the cavity 4030. Is separated by. In many embodiments, each position along the length of the cavity can be defined by an increment of about 0.1 inch in length. In other embodiments, each position along the length of the cavity is incremented by a length less than 0.100 inches, a length less than 0.075 inches, or a length less than 0.050 inches. Can be defined.

The inset portion 4036 increases the deflection of the hitting surface at the time of impact with the golf ball as compared with a club head having a cavity without the inset portion. Further, the inset portion 4036 disperses stress over a wider range at the time of impact with the golf ball as compared to a club head having a cavity without an inset portion. In many embodiments, the greater dispersion of stress in the golf club head by the inset 4036 prevents stress concentration from occurring at the front edge 4046 or trailing edge 4048 of the cavity 4030.

FIG. 30 shows another embodiment of a club head 5000 having a ball striking face 5012 and a body 5001. The body 5001 includes a heel region 5002, a toe region 5004 facing the heel region 5002, a sole 5006, a crown 5008 facing the sole 5006, a front end 5010, a rear end 5011 facing the front end 5010, and a cavity 5030. , Have. The club head 5000 has similar features except that the back surface 5080 of the cavity 5030 is concave, thereby adapting to the deformation of the club head upon impact with a golf ball, allowing for increased deflection and energy storage. Can be similar to a club head 2000 with the same number referring to. In other embodiments, the cavity 5030 can have any other curved shape. For example, in other embodiments, the back surface 5080 of the cavity 5030 can be convex or have any other outer shape.

In these embodiments, the cavity 5030 of the club head 5000 has a main portion 2038, an inset portion 2036, a front edge 2046, and a main portion 5038 and an inset similar to the rear edge 2048, respectively, of the cavity 2030 of the club head 2000. It has a portion 5036, a front edge 5046, and a rear edge 5048. Further, the cavity 5030 of the club head 5000 has an apex axis 5068, a front surface 5078, and a back surface 5080 similar to the apex axis 2068, the front surface 2078, and the back surface 2080 of the cavity 2030 of the club head 2000, respectively. Therefore, at least a portion of the front surface 5078 of the club head 5000 extends toward the ball striking face 5012.

FIG. 28 shows another embodiment of the club head 6000 having a ball striking face 6012 and a body 6001. The body 6001 includes a heel region 6002, a toe region 6004 facing the heel region 6002, a sole 6006, a crown 6008 facing the sole 6006, a front end 6010, a rear end 6011 facing the front end 6010, and a cavity 6030. , Have. The club head 6000 has similar features except that the back surface 6080 of the cavity 6030 is concave, thereby adapting to the deformation of the club head upon impact with a golf ball, allowing for increased deflection and energy storage. Can be similar to a club head 3000 with the same number referring to. In other embodiments, the cavity 6030 can have any other curved shape. For example, in other embodiments, the back surface 6080 of the cavity 6030 can be convex or have any other outer shape.

In these embodiments, the cavity 6030 of the club head 6000 has a main portion 3038, an inset portion 3036, a front edge 3046, and a main portion 6038 and an inset similar to the rear edge 3048, respectively, of the cavity 3030 of the club head 3000. It has a portion 6036, a front edge 6046, and a rear edge 6048. Further, the cavity 6030 of the club head 6000 has an apex axis 3068, a front surface 3078, and an apex axis 6068, a front surface 6078, and a back surface 6080 similar to the back surface 3080, respectively. Therefore, at least a portion of the front surface 6078 of the club head 6000 extends toward the ball striking face 6012.

FIG. 29 shows another embodiment of the club head 7000 having a ball striking face 7012 and a body 7001. The body 7001 includes a heel region 7002, a toe region 7004 facing the heel region 7002, a sole 7006, a crown 7008 facing the sole 7006, a front end 7010, a rear end 7011 facing the front end 7010, and a cavity 7030. , Have. The club head 7000 has similar features except that the back surface 7080 of the cavity 7030 is concave, thereby adapting to the deformation of the club head upon impact with a golf ball, allowing for increased deflection and energy storage. Can be similar to a club head 4000 with the same number referring to. In other embodiments, the cavity 7030 can have any other curved shape. For example, in other embodiments, the back surface 7080 of the cavity 7030 can be convex or have any other outer shape.

In these embodiments, the cavity 7030 of the club head 7000 has a main portion 4038, an inset portion 4036, a front edge 4046, and a main portion 7038 and an inset similar to the rear edge 4048, respectively, of the cavity 4030 of the club head 4000. It has a portion 7036, a front edge 7046, and a rear edge 7048. Further, the cavity 7030 of the club head 7000 has a nadir shaft 7072, a front surface 7078, and a back surface 7080 similar to the nadir shaft 4072, the front surface 4078, and the back surface 4080 of the cavity 4030 of the club head 4000, respectively. Therefore, at least a portion of the front surface 7078 of the club head 7000 extends toward the ball striking face 7012.

FIG. 25 shows another embodiment of a club head 8000 having a ball striking face 8012 and a body 8001. The body 8001 includes a heel region 8002, a toe region 8004 facing the heel region 8002, a sole 8006, a crown 8008 facing the sole 8006, a front end 8010, a rear end 8011 facing the front end 8010, and a cavity 8030. , Have. The club head 8000 can be similar to a club head 4000 with the same number that references similar features, except that the cavity 8030 of the club head 8000 is located at the transition between the ball striking face 8012 and the crown 8008. .. In these or other embodiments, the inset portion 8036 can be located closer to the rear end 8011 of the club head 8000 than to the main portion 8038 of the cavity 8030.

In another embodiment, the cavity 8030 can be located on any transition region between the ball striking face 8012 of the club head 8000 and the body 8001. For example, in another embodiment, the cavity 8030 can be located in the transition region between the ball striking face 8012 and the sole 8006.

With reference to FIGS. 22-30, the club heads 2000, 3000, 4000, 5000, 6000, 7000, 8000 having the cavities 2030, 3030, 4030, 5030, 6030, 7030, 8030 described herein are golf balls. It is possible to store the increased internal energy at the time of impact with. The increased stored energy allows the increased energy to be transferred to the golf ball at impact, thereby having a cavity compared to a similar club head that does not have a cavity or with an inset. Increases ball velocity and travel distance compared to similar club heads with non-cavities.

For example, in some embodiments, a club head with a cavity as described herein is simulated with a golf ball at a swing speed of 100 miles / hour as compared to a similar club head without a cavity. It stored about 48-90% more internal energy at impact. Further, for example, referring to Table 1, the club head 6000 shown in FIG. 28 is a golf ball at a swing speed of 100 miles / hour as compared to a similar club head having a similar cavity without an inset. Stored 4.0% more internal energy during the simulated impact of. Further, for example, referring to Table 1, the club head 5000 shown in FIG. 30 is a golf ball at a swing speed of 100 miles / hour as compared to a similar club head having a similar cavity without an inset. It can store about 4-10% more internal energy at the simulated impact of.

Further, with reference to FIGS. 22-30, the club heads 2000, 3000, 4000, 5000, 6000, 7000, 8000 with the cavities 2030, 3030, 4030, 5030, 6030, 7030, 8030 described herein Redistributes impact stress through a wider surface area, thereby making the club head more durable compared to similar club heads that do not have cavities or cavities with insets. Can be increased. Many club heads that do not have a cavity with an inset will experience high stress near the anterior edge of the cavity. Conversely, club heads 2000, 3000, 4000, 5000, 6000, 7000, 8000 with cavities 2030, 3030, 4030, 5030, 6030, 7030, 8030 described herein are club heads and / / at impact. Alternatively, it is possible to increase the torsional bending of the cavity, thereby reducing stress concentration at the front and rear edges and distributing the impact stress over a wider area of the cavity to increase the durability of the club head. Is possible.

For example, referring to Table 1, the club heads 6000 and 5000 shown in FIGS. 28 and 30 have similar cavities without insets at simulated impact with a golf ball at a swing speed of 100 mph. A peak stress of 17-25% less than the peak stress of a similar club head with was experienced at impact.

III. Golf Club Head with Cascade Sole and Back Cavity In some embodiments, the golf club head with the back cavity further comprises a cascade sole with a stepped thin wall portion. FIG. 14 shows a cross section of the golf club head 1100 according to an embodiment, which can be similar to the golf club head 1000 (FIG. 10) along the same cross section line XII-XII of FIG. Similar to the golf club head 1000 (FIG. 10), the golf club head 1100 has a body 1101. The body 1101 has a ball striking surface 1112, a sole 1106, and a crown 1108. The striking surface 1112 has a high region 1176, a medium region 1174, and a low region 1172. The crown 1108 has an upper region 1111 and a lower region 1113. The upper region 1111 has a top rail 1115. In many embodiments, the cavity 1130 is located below the top rail 1115. The golf club head 1100 further has a cascade sole 1310 similar to the inner diameter transition portion 310 (FIG. 3). The inner diameter transition portion 1310 can have a first stage 1315 having a first thickness, a second stage 1317 having a second thickness, and a stage transition region 1316. In some embodiments, the cascade sole 1310 can provide additional flexibility to the top rail 1115. In many embodiments, the back cavity combined with the cascade sole imparts a greater spring effect to the ball striking face. In some embodiments, the back cavity with a cascade sole allows about 3% to 5% more energy for the deflection of the ball striking face. The cascade sole 1310 can have any number of steps of two or more steps. For example, the cascade sole 1310 can have 2, 3, 4, 5, 6 or 7 steps.

A golf club head 1100 having a cascade sole and a back cavity can impart a greater recoil force to the ball striking face than a golf club head having only a cascade sole or a back cavity. This is due to the combined and increased recoil force from both the inner diameter transition and the back cavity, as described above. The increased recoil force with respect to the ball striking face increases the deflection, which increases the impact force applied to the golf ball, thereby increasing the velocity of the golf ball. In some embodiments, the golf club head 1100 having both a cavity 1130 and an inner diameter transition portion 1310 can increase ball speed, increase launch angle, and provide good distance control. In various embodiments, the golf club head 1100 can increase ball speed by about 1% to about 4%. In various embodiments, the golf club head 1100 can increase ball speed by about 1%, 2%, 3% or 4%. In many embodiments, the golf club head 1100 increases the ball speed more significantly when the golf ball is impacted in the high region 1176 of the hitting surface. In some embodiments, the golf club head 1100 can increase the launch angle from about 0.5 degrees to about 1.1 degrees. In some embodiments, the golf club head 1100 has a launch angle of about 0.5 degrees, 0.6 degrees, 0.7 degrees, 0.8 degrees, 0.9 degrees, 1.0 degrees or 1. It can be increased once.

An embodiment of a golf club head 1100 having a cascade sole and a back cavity was tested. Overall, when comparing control golf club heads lacking a cascade sole and back cavity, the golf club head with a cavity showed an increase in the speed and launch angle of the golf ball. The golf club head with a cavity increases the velocity of the golf ball and launches it with respect to any contact position of the ball striking face due to the combined spring effect from the combination of the cascade sole 1310 (FIG. 14) and the cavity 1130 (FIG. 14). It showed an increase in the angle. In some embodiments, the spring effect of the cavity 1130 (FIG. 14) partially increases the speed and launch angle of the golf ball to a higher portion of the ball striking surface (eg, high region 1076 (FIG. 12)) or. It was observed by contact in the high region 1176 (Fig. 14)). FIGS. 19-20 show a golf club head 1100 (golf head with cavity) compared to a standard iron type golf club head (control golf club head) having a closed back design and a loft angle similar to a golf club head with a cavity. The result of the test of the embodiment is shown. FIG. 19 shows an increase in the golf ball speed of a golf club head with a cavity compared to a control golf club head when the golf ball is impacted in a high region of the hitting surface, and FIG. 20 shows an increase in the golf ball speed of the golf ball in a high region of the hitting surface. The increase in the launch angle of the golf club head with a cavity as compared with the control golf club head at the time of impact is shown.

In particular, FIG. 19 shows that when compared to a control golf club head, the golf ball speed of the golf club head with a cavity is about 1.9% (or) when the golf ball is impacted in the high toe region of the ball striking face. About 2.5 mph), when the golf ball is impacted in the high center region of the hitting surface, about 2.1% (or about 2.8 mph, or about 4.5 mph), the golf ball is hit with the high heel of the hitting surface. It is shown to increase by about 1.5% (or about 2.0 mph, or about 3.2 kph) when impacted in the region (all golf club heads with cavities). When the golf ball is impacted on the hitting surface in the high toe region of the control golf club head, the speed of the golf ball is about 132.5 mph (213.2 mph), while the hitting surface in the high toe region of the golf club head with a cavity. When impacted, the golf ball reaches about 135.0 mph (217.3 mph). When the golf ball is impacted on the hitting surface in the high center region of the control golf club head, the speed of the golf ball is about 133.4 mph (214.7 mph), while the hitting surface in the high center region of the golf club head with a cavity. When impacted, the golf ball reaches about 136.2 mph (219.2 mph). When the golf ball is impacted on the hitting surface in the high heel region of the control golf club head, the speed of the golf ball is about 134.0 mph (215.7 mph), while the hitting surface in the high heel region of the golf club head with a cavity. When impacted, the golf ball reaches about 136.0 mph (218.9 mph).

FIG. 20 shows that when compared to a control golf club head, the launch angle of the golf club head with a cavity is about 4.2% (or about 0) when the golf ball is impacted in the high toe region of the hitting surface. When the golf ball is impacted in the high center region of the ball striking surface (.6 degrees), about 4.8% (or about 0.7 degrees), when the golf ball is impacted in the high heel region of the ball striking surface (cavity). All of the attached golf club heads) show an increase of about 6.4% (or about 0.9 degrees). When the golf ball impacts the hitting surface in the high toe region of the control golf club head, the launch angle is about 14.4 degrees, while when the hitting surface is impacted in the high toe region of the golf club head with a cavity. In addition, the launch angle is about 15.0 degrees. When the golf ball impacts the hitting surface in the high center region of the control golf club head, the launch angle is about 14.5 degrees, while when the hitting surface is impacted in the high center region of the golf club head with a cavity. In addition, the launch angle is about 15.2 degrees. When the golf ball impacts the hitting surface in the high heel area of the control golf club head, the launch angle is about 14.1 degrees, while when the hitting surface is impacted in the high heel area of the golf club head with a cavity. In addition, the launch angle is about 15.0 degrees.

FIG. 17 shows a method 1700 for manufacturing a golf club head. Method 1700 comprises preparing the body (block 1705). Preparing the body at block 1705 comprises a body having a ball striking face, a heel region, a toe region facing the heel region, a sole, and a crown. In many embodiments, the crown has an upper region and a lower region. In some embodiments, the upper region has a top rail. In many embodiments, the cavity is located below the top rail and above the lower region of the crown (block 1710). In some embodiments, the cavity is at least partially defined in the upper and lower regions of the crown. The cavity has a top wall, a back wall adjacent to the top wall, a bottom slope adjacent to the back wall, a back cavity angle measured between the top wall and the back wall of the cavity, and at least one channel. ..

In some embodiments, method 1700 further comprises preparing an insert facing the toe region in the lower region of the crown. In some embodiments, the insert is similar to insert 1062 (FIG. 10).

In some embodiments, in block 1705, a body further comprising a body having a cascade sole is prepared. The cascade sole has an inner diameter transition portion from the ball striking face to the sole. In many embodiments, the inner diameter transition region can be similar to the inner diameter transition or cascade sole 1310 (FIG. 14). In some embodiments, the inner diameter transition region is between the first stage having a first thickness, the second stage having a second thickness thinner than the first thickness, and the first and second stages. It is equipped with a stage transition area.

IV. Golf Club with Cascade Sole and Back Cavity FIG. 15 shows a golf club 1500 with a golf club head 1500 and a shaft 1590 connected to the golf club head 1500. In some embodiments, the golf club head 15000 of the golf club 1500 comprises a hybrid type golf club head. In another embodiment, the golf club head 1500 can be an iron type golf club head or a fairway wood type golf club head. In many embodiments, the golf club head 1500 can be similar to the golf club head 100 or the golf club head 1000 (FIG. 10). The golf club head 1500 can be a hollow body and has a ball striking face 1512, a heel region 1502, a toe region 1504 facing the heel region 1502, a sole 1506, a crown and 1508. The crown 1508 has an upper region 1511 and a lower region 1513. The upper region 1511 has a top rail 1515. The golf club head 1500 further comprises a cavity 1530 located below the top rail 1515 and above the lower region 1513 of the crown 1508.

FIG. 16 shows a cross section of the golf club head 1500 along the cross section line XVI-XVI of FIG. 15 according to one embodiment. In some embodiments, the cavity 1530 can be at least partially defined by an upper region 1511 and a lower region 1513. In many embodiments, the cavity 1530 comprises a top wall 1517, a back wall 1519, a bottom sloping portion 1521, a back cavity angle 1535 measured between the top wall 1517 and the back wall 1519, and at least one channel 1539. Has. In some embodiments, the apex of the apex wall 1517 is below the apex of the apex rail 1515, about 0.25 inches to about 1.25 inches. In some embodiments, the apex of the apex wall 1517 is about 0.375 inches below the apex of the apex rail 1515. In some embodiments, the bottom slope 1521 can have the lower apex of the top rail 1515 at least about 0.50 inches to about 2 inches. In many embodiments, the back cavity angle 1535 can be from about 70 degrees to about 110 degrees. In some embodiments, the back cavity angle 1535 can be about 90 degrees.

In many embodiments, the upper region 1511 comprises a lower region of the crown having a top of the cavity and a bottom slope of the cavity. In some embodiments, the top region 1511 is further measured between the posterior wall 1523 adjacent to the top wall 1517 of the cavity 1530 and the top wall 1517 of the cavity 1530 and the rear wall 1523 of the top region 1511. It has a rear angle of 1540. In many embodiments, the rear angle 1540 is from about 70 degrees to about 110 degrees.

In another embodiment, the golf club head can have a hosel. The hosel can have a hosel notch. The hosel notch has a loft iron-like range and the lie angle can be adjusted. Although not shown in FIG. 16, the golf club head 1500 may further have a cascade sole or an inner diameter transition portion on the sole.

The golf club heads having the energy storage properties discussed herein can be implemented in various embodiments, and the aforementioned discussion of these embodiments will necessarily provide a complete description of all possible embodiments. It's not a thing. Rather, the detailed description of the drawings and the drawings themselves disclose at least one preferred embodiment of a golf club head having energy storage properties and other embodiments of a golf club head provided with a stepped inner thin wall. be able to.

(Clause 1) A golf club head, which is a hollow body, a ball striking surface, a heel area, a toe area facing the heel area, a sole, a crown, and behind the ball striking surface of the club head. And with a cavity disposed on the sole of the club head, the cavity comprises a front edge adjacent to the sole, a rear edge adjacent to the sole, and a front edge and the rear edge. A main portion extending inward from the sole, an inset portion extending from the main portion to the ball striking surface, and an inset portion extending inward from the sole, and an inset portion extending from the main portion to the ball striking face are located along the deepest portion of the cavity, from the heel region to the toe region. An extending apex axis comprising the apex axis that separates the front surface of the cavity from the back surface of the cavity, the front surface extending from the front edge to the apex axis, and the back surface from the apex axis. A golf club head that extends to the posterior edge and at least a portion of the front surface towards the ball striking face.

(Article 2) The golf club head according to Article 1, wherein the volume of the club head is smaller than 60 cc.

(Article 3) The golf club head according to Article 1, wherein the volume of the club head is between 40 and 60 cc.

(Article 4) The golf club head according to Article 1, wherein the front edge of the cavity is offset from the ball striking surface by a distance of 0.50 inch or less.

(Article 5) The golf club head according to Article 1, wherein the front edge of the cavity is offset from the ball striking surface by a distance of 0.10 inch or less.

(Article 6) The golf club head according to Article 1, wherein the front edge of the cavity is offset from the ball striking surface by a certain distance.

(Article 7) The front edge of the cavity near the center of the ball striking surface is closer to the ball striking surface than the front edge of the cavity near at least one region of the heel region and the toe region. The golf club head described in Clause 1.

(Clause 8) The front surface of the cavity further has an acute angle located closest to the hitting surface in the side sectional view of the club head, and the hitting surface in the side sectional view of the club head. The golf club head according to clause 1, wherein the golf club head has a last point located farthest from the ground, and an axis extending through the front point and the last point intersects the ball striking face at an acute angle.

(Article 9) The shaft described in Clause 1 is located at an angle between 5 degrees and 85 degrees with respect to the loft surface of the club head, the axis extending through the front point and the last point of the front surface. Golf club head.

(Clause 10) The cavity further has a length extending from the heel portion to the toe portion, and the loft surface of the club head is arranged so as to pass through the geometric center of the ball striking face. A plane extending parallel to the loft plane at each position along the length of the cavity and formed by the plurality of axes passing through the anterior edge is the main portion of the cavity and said. The golf club head according to Clause 1, which separates from the inset portion.

(Clause 11) A golf club head, which is a hollow body, a ball striking surface, a heel area, a toe area facing the heel area, a sole, a crown, and behind the ball striking surface of the club head. And with a cavity located above the crown of the club head, the cavity comprises a front edge adjacent to the crown, a rear edge adjacent to the crown, and a front edge and a rear edge. It is located along the deepest portion of the cavity, the main portion extending inward from the crown, the inset portion extending from the main portion to the nadir, and extending from the heel region to the toe region. It has a nadir axis that separates the front surface of the cavity from the back surface of the cavity, the front surface extending from the front edge to the nadir axis, and the back surface being the nadir axis. A golf club head that extends from the nadir axis to the rear edge and at least a portion of the front surface toward the ball striking face.

(Article 12) The golf club head according to Article 11, wherein the volume of the club head is smaller than 60 cc.

(Article 13) The golf club head according to Article 11, wherein the volume of the club head is between 40 and 60 cc.

(Article 14) The golf club head according to Article 11, wherein the front edge of the cavity is offset from the ball striking surface by a distance of 0.50 inch or less.

(Article 15) The golf club head according to Article 11, wherein the front edge of the cavity is offset from the ball striking surface by a distance of 0.10 inch or less.

(Article 16) The golf club head according to Article 11, wherein the front edge of the cavity is offset from the ball striking surface by a certain distance.

(Article 17) The front edge of the cavity near the center of the hitting surface is closer to the hitting surface than the front edge of the cavity near at least one region of the heel region and the toe region. The golf club head described in Clause 11.

(Clause 18) The front surface of the cavity further has an acute angle located closest to the ball striking face in the side sectional view of the club head, and the ball striking surface in the side sectional view of the club head. 11. The golf club head according to clause 11, wherein the golf club head has a last point located farthest from the ball, and an axis extending through the front point and the last point intersects the ball striking face at an acute angle.

(Article 19) The shaft according to Clause 11 is located at an angle between 5 and 85 degrees with respect to the loft surface of the club head, the axis extending through the front and rear points of the front surface. Golf club head.

(Clause 20) The cavity further has a length extending from the heel portion to the toe portion, and the loft surface of the club head is arranged so as to pass through the geometric center of the ball striking face. A plane extending parallel to the loft plane at each position along the length of the cavity and formed by the plurality of axes passing through the anterior edge is the main portion of the cavity and said. The golf club head according to Clause 11, which separates the inset portion from the golf club head.

The replacement of one or more claim elements constitutes a reconstruction, not a prosthesis. In addition, advantages, other advantages and solutions to the problem have been described in the context of special embodiments. However, any one or more factors that give rise to or reveal the advantages, other advantages and solutions to the problem, as well as any advantages, advantages or solutions, such advantages, advantages. Unless the solution or element is explicitly stated in the scope of such claims, it does not constitute a material, essential or essential feature or element of any or all elements of the claims. do not have.

Rules for golf may change from time to time (eg, new rules may be applied or older by golf standards organizations and / or governing bodies such as the United States Golf Association (USGA), British Golf Association (R & A)). As rules may be abolished or changed), golf equipment relating to the equipment, methods and products described herein may or may not comply with the rules of golf at any particular time. Accordingly, golf equipment relating to the devices, methods and products described herein may be published, marketed and / or sold as conforming or non-conforming golf equipment. The devices, methods and products described herein are not limited in this regard.

Although the above embodiments are described in the context of driver-type golf clubs, the devices, methods and products described herein include fairwood-type golf clubs, hybrid-type golf clubs, and iron-type golf. It may be applied to clubs, wedge type golf clubs, or other types of golf clubs such as putter type golf clubs. On the other hand, the devices, methods and products described herein may be applicable to other types of sporting goods such as hockey sticks, tennis rackets, fishing rods, ski stocks and the like.

Moreover, the embodiments and limitations described herein are such that the embodiments and / or limitations are not expressly claimed in the claims and (2) under the doctrine of equivalents. If it is equivalent or potentially equivalent to the elements of expression and / or restrictions in the scope, it is not provided to the public under the doctrine of equivalents.

Claims (20)

A golf club head
With a hollow body,
With the ball striking face
Heel area and
The toe area facing the heel area and the toe area
With the sole,
With the crown,
A cavity located behind the ball striking surface of the club head and on the sole of the club head.
Equipped with
The cavity is
With the front edge adjacent to the sole,
With the trailing edge adjacent to the sole,
A main portion extending inward from the sole between the front edge and the rear edge,
An inset portion extending from the main portion to the striking surface,
An apex axis located along the deepest portion of the cavity and extending from the heel region to the toe region, with the apex axis separating the front surface of the cavity from the back surface of the cavity.
Have,
The front surface extends from the front edge to the apex axis.
The back surface extends from the apex axis to the trailing edge.
At least a part of the front surface extends toward the ball striking surface.
Golf club head. The golf club head according to claim 1, wherein the volume of the club head is smaller than 60 cc. The golf club head according to claim 1, wherein the volume of the club head is between 40 and 60 cc. The golf club head according to claim 1, wherein the front edge of the cavity is offset from the ball striking surface by a distance of 0.50 inch or less. The golf club head according to claim 1, wherein the front edge of the cavity is offset from the ball striking surface by a distance of 0.10 inch or less. The golf club head according to claim 1, wherein the front edge of the cavity is offset from the ball striking surface by a certain distance. 1. The front edge of the cavity near the center of the ball striking face is closer to the ball striking surface than the front edge of the cavity near at least one region of the heel region and the toe region. The golf club head described. The front surface of the cavity further
In the side sectional view of the club head, the foremost point located closest to the ball striking face and the front point.
In the side sectional view of the club head, the last point located farthest from the ball striking face and
Have,
The axis extending through the foremost point and the last point intersects the striking surface at an acute angle.
The golf club head according to claim 1. The golf club head according to claim 1, wherein the axis extending through the front point and the last point on the front surface is located at an angle between 5 degrees and 85 degrees with respect to the loft surface of the club head. .. The cavity further has a length extending from the heel region to the toe region.
The loft surface of the club head is arranged so as to pass through the geometric center of the ball striking face.
A plane formed by the plurality of axes extending parallel to the loft plane and passing through the front edge at each position along the length of the cavity is the main portion of the cavity. And the inset part are separated.
The golf club head according to claim 1. A golf club head
With a hollow body,
With the ball striking face
Heel area and
The toe area facing the heel area and the toe area
With the sole,
With the crown,
A cavity located behind the ball striking surface of the club head and above the crown of the club head.
Equipped with
The cavity is
The front edge adjacent to the crown and
With the trailing edge adjacent to the crown,
A main portion extending inward from the crown between the front edge and the rear edge,
An inset portion extending from the main portion to the striking surface,
A nadir axis located along the deepest portion of the cavity and extending from the heel region to the toe region, with the nadir axis separating the front surface of the cavity from the back surface of the cavity.
Have,
The front surface extends from the front edge to the nadir axis.
The back surface extends from the nadir axis to the trailing edge.
At least a part of the front surface extends toward the ball striking surface.
Golf club head. The golf club head according to claim 11, wherein the volume of the club head is smaller than 60 cc. The golf club head according to claim 11, wherein the volume of the club head is between 40 and 60 cc. 11. The golf club head of claim 11, wherein the front edge of the cavity is offset from the ball striking surface by a distance of 0.50 inch or less. The golf club head according to claim 11, wherein the front edge of the cavity is offset from the ball striking surface by a distance of 0.10 inch or less. 11. The golf club head according to claim 11, wherein the front edge of the cavity is offset from the ball striking surface by a certain distance. 11. The front edge of the cavity near the center of the ball striking face is closer to the ball striking surface than the front edge of the cavity near at least one region of the heel region and the toe region. The golf club head described. The front surface of the cavity further
In the side sectional view of the club head, the foremost point located closest to the ball striking face and the front point.
In the side sectional view of the club head, the last point located farthest from the ball striking face and
Have,
The axis extending through the foremost point and the last point intersects the striking surface at an acute angle.
The golf club head according to claim 11. 11. The golf club head of claim 11, wherein the axis extending through the front and rear points of the front surface is located at an angle between 5 and 85 degrees with respect to the loft surface of the club head. .. The cavity further has a length extending from the heel region to the toe region.
The loft surface of the club head is arranged so as to pass through the geometric center of the ball striking face.
A plane formed by the plurality of axes extending parallel to the loft plane and passing through the front edge at each position along the length of the cavity is the main portion of the cavity. And the inset part are separated.
The golf club head according to claim 11.

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