WO2015069899A1

WO2015069899A1 - Golf clubs and golf club heads in fairway wood family having variable camber and related methods

Info

Publication number: WO2015069899A1
Application number: PCT/US2014/064354
Authority: WO
Inventors: Martin R. JERTSON; John A. Solheim; Brandon L. FOSSUM
Original assignee: Karsten Manufacturing Corp
Current assignee: Karsten Manufacturing Corp
Priority date: 2013-11-06
Filing date: 2014-11-06
Publication date: 2015-05-14
Anticipated expiration: 2016-05-06
Also published as: US20150126296A1

Abstract

A set of golf club heads including two or more fairway wood-type golf clubs heads each having a different loft angle. The two or more fairway wood-type golf club heads can each include a sole, which can include a center point and a camber region having a radius of curvature. The camber region can extend at least approximately 0.5 inch from the center point in each of a toe direction and a heel direction. The loft angles of the two or more fairway wood-type golf club heads can progressively increase across the two or more fairway wood-type golf club heads. The radii of curvature of the two or more fairway wood-type golf club heads can progressively decrease across the two or more fairway wood-type golf club heads. Other embodiments for related sets of golf club heads, golf clubs, and methods are disclosed.

Description

GOLF CLUBS AND GOLF CLUB HEADS II FAIRWAY WOOD FAMILY HAVING VARIABLE CAMBER AND RELATED ME THODS

CROSS-REFERENCE TO RELATED APPLICATION

[OOei^'J This application claims the benefit of U.S. Patent Application No. 14/476,863, filed September 4, 2014, which claims the benefit of U.S. Provisional Application No, 61/900,994, filed November 6, 2013, U.S. Patent Application No. 14/476,863 and U.S. Provisional Application No, 61/900,994 are incorporated herein by reference in their entirety.

TECHNICAL FIELD

[0002] This disclosure relates generally to sports equipment, and relates more particularly to go lf club heads and golf clubs, and related methods.

BACKGROUND

JO003] Fairway wood-type golf club heads, which are now almost exclusively made of itteta are in common use today. People often use lower-lofted fairway woods from the tee and good lies on the fairway when they want to ^'hit the ball as far as possible with accuracy and consistency.- People often use higher-lofted fairway woods from a variety of lies when they want to hit the ball at discrete distances and to blend into the distance gaps of the lower-lofted irons and hybrids. As such, people generally want the lower- lofted fairway woods to hit the ball as fa as possible with accuracy and want the higher-lofted fairway woods to be versatile for a variety of lies.

BRIEF DESCRIPTION OF THE DRAWINGS

|00 4] To -facilitate further description of the embodiments, the following drawings are provided in .which:

[O005j FIG. 1 illustrates a schematic view of a golf club head view from the -front, according to an embodiment;

0006] FIG, 2 illustrates a golf club head set, showin a front elevational view of each golf club head, according to another embodiment;

[0007] FIG. 3 illustrates the golf club head set of FIG. 2, showing a front-side cross-sectional view of each golf club head;

[0008] FIG. 4 illustrates a set of golf clubs, according to another embodiment; and

[0009] FIG. 5 illustrates a flow chart for an method of providing a set of golf clubs, according to another embodiment .

[0010] For simplicity and clarity of illustration, the drawing figures illustrate the general manner of construction, and descriptions and details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the present disclosure. Additionally, elements i the drawing figures are not necessarily drawn, to scale. For example, the dimensions of some of the i elements in the figures may be exaggerated relative to other elements to help improve understanding, of embodiments of the present disclosure. The same reference numerals in different figures denote the same elements.

[00.11] The terms "first," "second,^"'' "third," "fourth," and the like in the description and in the claims, if any, are used for distinguishing betwee similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate -circumstances .such that the embodiments described herein are, for example, capable of operation i sequences other than those illustrated or otherwise described herein. Furthermore, the terras "include,^5* and "have," and any variations thereof, axe intended to cover a non-exclusive inclusion, such that a process, method, system, article, device, or apparatus that comprises a list of elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherent to such process,, method, system, article, device, or apparatus,

[0012] The terms "left,"- "right," "front," "back," "top," "bottom," "over," "under," and the like in the description and in the claims, if any, are used for descriptive purposes and not necessarily for describing permanent relative positions. It is to b understood that the terms- so used are interchangeable under appropriate circumstances such that the embodiment of the apparatus, methods, arid/or articles of manufacture described herein are, for example, capable o f operation in other orientations than those illustrated or otherwise described herein.

[0013] The terms "couple," "coupled," "couples," "coupling," and the like should be- broadl understood and refer to connecting two or more elements mechanically and/or otherwise. Two or more mechanical elements may be mechanically coupled together, but not be electrically or otherwise coupled together-. Coupling may be- for an length of time, e.g., permanent or semi-permanent or only for an instant. -'Mechanical coupling" and the like should be broadl understood^' and inc lude mechanical coupling of all types.

[0014] The absence of the word "removably," "removable," and the like near the word "coupled," and the like does not mea that the coupling, etc. in question is or is not removable.

[0015] As defined herein, two or more elements are "integral" if they are comprised of the same piece of material. As defined herein, two or more elements are "non-integral" if each is comprised of a different piece of material

[0016] As defined herein, "approximately^'' can, in some embodiments, mean within plus or minus ten percent of the stated value. In other embodiments, "approximately" can mean within plus or minus five percent of the stated value, in further embodiments, "approximately" can mean within plus or minus three percent of the stated value, in yet other embodiments, "approximately" can mean within plus or minus one percent of the stated va l ue. The apparatus. methods, and articles of ^'manufacture described herein are not limited in this regard.

DETAILED DESCRIPTION OF EXAMPLES OF EMBODIMENTS

10017] Various embodiments includes a set of go.lf club heads, the set of golf club heads can include two or more fairway wood-type golf c lubs heads,. The two or more fairway wood-type golf club heads can each have a different lot angle. The two or more fairwa wood-type golf club heads can each include a sole. The sole ca include a center point and a camber region. The camber region can have a radius of curvature. The camber region can extend at least approximately 0.5 inch from the center point in each of a toe direction and a heel direction. The loft angles of the two or more fairway wood-type golf club beads can progressively increase across the two or more, fairwa wood-type golf club heads. The radii of curvature of the two or more fairway wood-type golf club beads can progressively decrease across the two or more fairway wood-type golf club heads.

[0018_.1 A number of embodimeflts can include a set of golf clubs. The set of golf clubs can include two or more fairway wood-type golf clubs. The two or more fairway wood-type golf clubs can each include a golf club head having a different loft angle. The golf club head can include a sole. The sole can include a center point and a camber region. The -camber region can have a radius of curvature. The camber region can extend at least approximatel 0.5 inch from the center point in each of a toe direction an a heel direction. The loft angles of the golf club heads of the two or more fairway wood-type golf clubs can progressively increase, across the two or- more fairwa wood -type golf clubs. The radii of curvature of the golf club heads of the two r more fairway wood-type golf clubs can progressi vely decrease across the two or more fairwa wood-type golf clubs.

[001.9] Some embodiments include a method of providing a set of golf clubs. The method can include providing a set of golf club heads. The set of golf club heads can include two or more fairway wood-type golf clubs heads. The two or more fairway wood-type golf clubs heads can each have a different loft angle. The two or more fairway wood-type golf club beads can each include a sole. The sole can include a center point and a camber region. The camber region can have a radius of curvature. The camber regio can extend at least approximately 0.5 inch from the center point in each of a toe direction and a heel direction. The method also can include providing a set of shafts. The method further can include assembling each shaft -of the set of shafts with eac h c lub head of the set of club beads. The loft angles of the two or more fairway wood-type golf club heads can progressively increase across the two or more fairway wood-type golf club beads. The radii of curvature of the two or more fairway wood-type golf club heads can progressively decrease across the two or more fairway wood-type golf club heads.

100201 Turning to the drawings, FIG, .1 illustrates a schematic view of a golf club head .100 viewed from the front, according to an embodiment. Golf-dub head 100 is merely exemplary and embodiments of the golf club head are not limited to the embodiments presented herein. The golf club head can be employed m man different embodiments or examples not specifically depicted or described herein.

[0021] Golf club head 100 can include a suitable fairway wood-type golf club head In a number of embodiments, golf club head 100 can be composed of a tody I I I , which can. be made of stainless steel, titanium, or one or more other materials having a high shear modulus aad or high strength-to- weight ratio, in various embodiments, body 1 11 ca be hollow. In some embodiments, body 1 1 1 has a volume of no more than 350 cubic centimeters. In the same or different embodiments, body 1 1 1 can have a volume of no more than 250 cubic centimeters.

[0022] In some embodiments, golf club head 100 can include a toe 1 12, a heel 1 13, a face plate 1 14, and/or a sole 1 15. In some embodiments, golf club head 100 can include an engineered impact point 1 16, which can be the ideal point at which the strike a golf ball. In many embodiments, when go lf club head 100 is at a nominal he angle, as shown in FIG . 1 , engineered impact point 1 16 can be located on a vertical line that bisects in equal halves a lowermost groove of face plate 1 1.4 of golf club head 100.

[0023] In many embodiments, sole 1 15 can. have a camber, which is a curvature of sole 1 15. In some embodiments, a camber region 1 17 can be vertically^' centered with the engineered impact point OH face plate 1 14. In a number of embodiments, camber region 1 1 7 can be verticall centered with the lowermost groove of face plate 1 14 of golf club head 100. In various embodiments, a center point 1 18 on sole 1 15 can be located on a vertical line running through engineered impact, point 116 when golf club bead 100 is at a nominal lie angle. In some embodiments, center point 118 on sole I I S can. be located on a vertical line running through the lo wermost groo ve of face plate 1 14 of golf club head 1.00. In vario us embod iments, center point 1 18 can be centered on g lf club head 100 between toe 112 and heel 1 13. In man embodiments, center point 1 18 can bisect camber region 1 17.

|0024{ Camber region 1 17 can extend partially across sole 1 15 between toe 1 12 and heel .1 13. In many embodiments, camber region 1 17 can be measured ^'for a least 0.5 inch (in.) / 1.27 centimeters (cm) on each side of center point 1 18. In various embodiments, camber region 117 can extend at least approximately 0.5 in. / 1.27 cm fro center point 1 IS in a toe direction (e.g., toward toe 1 12) and at least approximately 0.5 in. / 1.27 cm from center point 1 18 in a heel direction (e.g. , toward heel 1 13). In a number of embodiments, camber region 1 17 can have a cambe dimension 122 of at least approximately 1.0 in / 2,54 cm. in many embodiments, camber region 117 can have a camber radius o curvature 119, which can he constant throughout camber region 1 .17, Camber radius f cu vature 1 .1 of camber region 1 17 can be measured, for example, by using a. curvature gaug on sole 1 15 across camber region 1 1 7. As an example, camber radius of curvature 1 1 can be approximately 1.7 in. / 4.318 cm to approximately 6.5 in.

16.51 era.

10025 J n some embodiments, camber regio 1 17 can be located at a leading edge of sole 1 15, which -Can be the f ont-most point of sole 1 15, in other embodiments, camber region 1 17 can be located between approximately 0.25 in. / 0.635 cm and approximately 1 .0 in. / 2.54 cm backward from the leading edge of sole 1 15, in many embodiments, camber region 117 can be located at approximately 0.5 in. / 1.27 cm backward irom the leading edge of sole 1 15.

[0026] Turning ahead .in the drawings, FIG. 2 illustrates a front etevationa! view of a golf club head set 200, showing a front elevational view of each golf club head depicted. FIG. 3 illustrates golf club head set 200, snowing a cross-sectional view of each golf club head depicted. Golf club head set 200 is merely exemplary, and embodiments of the golf club head set are not limited to the embodiments presented herein. The golf club bead set can be employed in many different embodiments or examples not specifically depicted or described herein. Golf club head set 200 can include a golf club head 2 10, a golf club head 230 and/or a golf club head 250.. Golf club head 210, golf club head 230. and/or golf club head 250 can be similar to golf club bead 100 (FIG. 1 ), and various components and/or constructions of golf club head 210, golf club head 230, and/or golf club head 250 can be identical or substantially similar to various components of golf club head 100 (FIG. 1).

[0027] In many embodiments, golf club head 210„ golf club head 230„ and golf club head 250 can each be a fairw ay w ood-type golf club head. In some embodiments, fairway wood-type golf club heads can have a wood number that can roughly correspond to a lot angle of the face plate. For example, a fairway wood-type golf club bead with a loft angle of approximately 15 degrees can be a 3-wood, a fairway wood-type golf club head with a loft angle of approximately J 6.5 degrees can be a 4-wood, a fairway wood-type, golf club head with a loft angle of approximatel 18 degrees can be a 5-wood, and/or a fairway wood-type goif club head with a loft angle of approximately 21 degrees can be a 7-wood. in some embodiments, golf club head set 200 can include other fairway wood-type golf club heads, such as a 2 -wood, a 4- wood, 6-wOod, an 8- wood, and/or a 9-wood. In some embodiments, golf club head set 200 can include two or more fairway wood-type golf club bead each having a diflerent loft angle, in many embodiments, golf club head set 200 can have three or more fairway wood-type golf club heads each having a different loft angle.

[0028] In. some embodiments, golf club head 210 can be a 3-wood golf club head. In many embodiments, golf club head 21 can have a loft angle of approximately 14,5 degrees. In some embodiments, golf club head 210 can include a face plate 21.4 ami sole 2.1 5. Face plate 214 can be similar to face plate 1 14 (FIG. I), and/or sole 21.5 can be similar to sole 1 15 (FIG. I ). In a number of embodiments, golf club head 210 can have a camber region 217, which can be centered -at center point 218. Camber region 217 can be similar to camber region 117 (FIG. 1 ), and/or center point 218 can be similar to center point 1 18 (FIG, !), In various embodiments, center point 218 can be located on a vertical line below the midpomt of a bottom groove 221 on face plate 214 when golf club head 210 is at a nominal lie angle, as shown in FIG, 2.

[0029] In some embodiments, golf club head 230 can be a 5-wood golf club head. In many embodiments, golf club head 230 can have a fi angle of approximately 18 degrees. In some embodiments, golf club head 230 can include a face plate 234 and a sol 235. Face plate 234 can be similar to face plate 1 14 (FIG. 1), and/or sole 235 can be similar to sole 1 15 (FIG. I ), in a number of embodiments, gol club head 230 can have a camber region 237, which ca be centered at center point 238. Camber region 237 can be similar to camber region 1 17 (FIG. I), and/or center point 238 can he similar to center point 1 18 (FIG, 1), In various embodiments, center point 238 can be located on a vertical line below the midpoint of a bottom groove 241 on face plate 234 when golf club head 230 is at a nominal lie angle, as shown in FIG, 2.

10030] In some embodiments, golf club head 250 ca be a 7-wpod golf club head. In many embodiments, golf club head 250 can ha ve a loft angle of approximately 1 degrees, in some embodiments, golf clu head 250 can include a face plate 254 and a sol 255. Face plate 254 can be similar to- face plate 1 14 (FIG. I), and/or sole 255 can be similar to- sole 1 15 (FIG. 1 ). In a number of embodiments, golf club head 250 can have a camber region 237, which can be centered at center point 258, Camber region 257 can be similar to camber region 1 17 (FIG, 1), and/or center point 235 can be similar to center point 1 I S (FIG. I ), Om variou embodiments, center point 258 can be located on a vertical line below the midpoint of a bottom groove 261 on face plate 254, when golf club head 250 is at a nominal lie angle, as shown in FIG. 2.

[0031] FIG, 3 shows cross-sectional view of golf club head 10, golf club head 230, and golf club head 250 of golf club head set 200, in which the cross- sectional cut is at a point approximately 0.5 in, / 1.27 cm back from- the leading each of the golf club heads (e.g., golf club head 210, golf club head 230, and golf club head 250). In some embodiments, camber region 217 of go lf c lu b head 210 can be centered at the cross-sectional cut around center point 21 8 and can extend for approximately 0,5 in, 1.27 cm on each side of center point 218 in a toe. direction toward a toe 312 and in a heel direction toward a heel 313. In several embodiments, camber region 217 ca have a camber dimension 322 of at least approximately 1 ,0 in. / 2,54 cm.

[0032] In. a number of embodiments, camber regio 237 of golf club head 230 can be centered at the cross-sectional cut around center point 238 and can extend for approximately 0.5 in. / 1.27 cm on each side of center point 238 in a toe direction, toward a toe 332 and in a ^'heel direction toward a heel 333. in various embodiments, camber region. 237 can have a camber dimension 342 of at least approximately 1 ,0 in. 2.54 cm.

10033] In many embodiments, camber region 257 of golf clu head 250 can be centered at the cross-sectional cut around center point 258 and can extend for approximately 0.5 in, / 1.27 em on each side of center point 258 in a toe direction toward, a toe 352 and in a heel direction toward heel 353. hi various embodiments, camber region 257 ca have a camber dimension 362 of at least approximately 1.0 in, / 2.54 cm.

]0034] In some ^'embodiments, camber region 217 can have a camber radius of curvature 319 of between approximately 3.2 in. 8.128 cm and approximately 6.2 in. / 15.748 era. in certain embodiments, .camber region 217 can have camber radius of curvature 319 of approximately 4.7 in. / 1 1.938 cm. In various embodiments, camber region 237 can have a cambe radius of curvature 339 of between approximately 2,5 in / 6.35 cm and approximately 5,5 in. / 13,97 cm. In certain embodiments, camber region 237 can have camber radius of. curvature 339 of approximately 4.0 in, / 1.0.16 cm, in many embodiments, camber region 257 can have a camber radius of curvature 359 of between approximately 2.0 in, 5,08 cm and approximately 5,0 in. / 12.7 era. In certain embodiments, camber region 237 can have camber radius of curvature 359 of approximately 3.5 in. / 8.89 cm. In man embodiments, the camber radius of curvature (e.g., camber radius of curvature 319, camber radius of curvature 339, camber radius of curvature 359} at the camber region (e.g., camber region 21 7, camber region 237, camber region 257) of an go lf club head (e.g. golf club head 210, golf club head 230, golf club head 250) in golf club head set 200 can be less than approximately 6.5 in. / 16.51 em,

[0035] In many embodiments, the golf clubs heads (e.g. golf club head 210, golf club head 230; golf club head 250) of golf clu head se 200 ca have an inverse relationshi between the camber radius_, of curvature (e.g., camber radius of curvature 3.1 , camber radius of curvature 339, camber radius of curvature 359) and the loft angle, in a number o embodiments, as the loft, angle increases among the golf club heads (e.g. golf club head 210, golf club head 230, golf club head 250), the camber radius of curvature (e.g., camber radius of curvature 19, camber radius of curvature 339, camber radius of curvature 359) can decrease, which can result in greater curvature for the golf club heads having a greater lo S angle and less curvature for t he golf club heads having a lower loft angle.

[0036] in a number of embodiments, golf club head 210 can hav a lower loft angle than golf club head 230, and golf club head 230 can have a lower loft angle than golf club head 250. Meanwhile, camber radius of curvature 319 of golf club head 210 can be larger than camber radius of curvature 339 of golf club head 230. Similarly, camber radius of curvature 339 of golf club head 230 can be larger than camber radius of curvature 359 of golf club head 250. [003 j In some embodiments, for any second golf club head having a progressive Sy next higher loft angle than any first golf club head in a set of golf club heads (e.g., golf club head set 200), the camber radius of curvature of the second golf club head can be at least approximately- ^'-0, 125- in. . 0.3175 cm less than the camber radius of curvature of the first golf club head. For example, camber radius o -Curvature 339 of golf club head 230 can be at least approximately 0, 125 in, / 0. 175 cm less than camber radius of curvature 319 of golf club head 210, and camber .radius of curvature 359 of golf club head 250 can be at least approximately 0.125 in, / 0.3175 cm less than camber radius of curvature 33 of golf club head 230.

[0638 j Turning ahead in the figures, FIG. 4 illustrates a set of golf clubs 400. Set of golf clubs 400 is merely exemplary, and embodiments of the set of golf clubs are not .limited, to the embodiments presented herein. The set of golf clubs can be employed in many different embodiments or examples not specifically depicted or described herein. In some embodiments* set of golf clubs 400 can include a golf club 41 0, a golf club 430, and/or a golf club head 450, which can each be a different one of a fairway wood-type golf club.

{0039] In many embodiments, golf club 410 can include a golf club head 41 2, a shaft 41 1 , and a grip 414. Golf club head 412 can be similar or identical to golf club head 100 (FIG. I) and/or golf club head 2 Ϊ0 (FIGs. 2-3). and various components and/or constructions, of olf club -_:head 412 can be similar or identical to various components of golf club head 100 (FIG. 1) and/or golf club head 210 (FIGs. 2-3 ). Go l f club head 410 can be a fairway wood-type gol f club head. For example, golf club 410 can be a 3-wood golf club having a loft angle of approximately 14,5 degrees. G lf club bead 412 can have a camber region, which can be similar or identical to camber region 1 1.7 (FIG. I ) and/or camber region 21? ( FIGs. 2-3), The camber region of golf cub head 41.2 can- have -a camber radius of curvature, which can be similar to camber radius of c urvature 1 1 (FIG. 1 ) and/or camber radius of c urvature 3.1 (FIG. 3).

[0040] In a number of embodiments, golf club 430 can include a golf club head 432, a shaf 431, and a grip 434, Golf club head 432 can be similar or identical to golf club head 100 (FIG. 1) and/or golf club head 230 (FIGs. 2-3), and various components and/or constructions of golf club head 432 can be similar or identical to various components of golf club head 100 (FIG. I ) and/or golf club head 230 (FIGs. 2-3). Golf c lub head 430 can be a fairway wood-type go lf c lub head. For example, golf club 430 can be a 5-wood golf club having a. ioft angle of approximately 18 degrees. Gol club head 432 can have a camber region, which can be similar or identical to camber region 117 (FIG. 1 ) and/or camber regio 237 (FIGs. 2-3), The camber region of golf club head 432 can have a camber radius- of curvature, which can be similar to camber radius of curvature 119 (FIG. 1) and/or camber radius of curvature 339 (FIG, 3),

[00411 In various embodiments, golf club 450 can include a golf club head 452, a shaft- 451 , and a grip 454. Golf club head 452 can be similar or identical to golf club head 100 (FIG , 1 ) and/or golf club head 250 (FIGs. 2-3), and various components and/or constructions of golf club head 452 can be similar or identical to various components of golf club head 100 (FIG. I) and ox^' golf c lub bead 250 (FIGs. 2-3). Golf club head 450 can be a fairway wood-type golf club head. For example, golf club 450 can be a 7-wood golf club having a loft angle of approximatel 21 degrees. Golf club head 452 can. have a camber region, which can be similar or identical to cam er region 117 (FIG . 1 ) and ox camber region 257 (FIGs. 2-3). The camber region of golf club bead 452 can have a camber radius of curvature, which can be similar to camber radius of cur vature 1 19 (FIG. 1) and/or camber radius of curvature 35 (FIG. 3).

10042] In some embodiments, set of golf clubs 400 can include -other fairway wood-type golf clubs, such as a 2 -wood, a 4-wood, a 6- wood, an 8-wood, aad/or a 9-wood. In some embodiments, set of golf clubs 400 can include two or more fairway wood-type -golf clubs each haying -a different loft angle. In many embodiments, set of golf clubs 400 can have three o more fairway wood-type golf club heads each having a different loft angle, in man embodiments, the loft angles of the golf clubs (e.g., golf club 410, golf club 430, golf club 450) of set of golf clubs 400 can progressively increase across set of golf clubs 400 as the camber radii of curvature of the golf club heads (e.g., golf club head 412, golf club head 43.2, golf club head 452) of the golf clubs (e.g.,, golf club 10, golf club 430, golf club 450) of set of golf clubs 400 progressively decrease across set of golf clubs 400.

|0043j In some ^'embodiments, each shaft (e.g., shaft 41 1 , shaft 4 1, shaft 451 ) of the golf clubs (e.g., golf club 41.0, golf club 430, golf club 450) of set of golf clubs 400 can have a shaft length. In many embodiments, shaft lengths of the shafts (e.g., shaft 4.1 1, shaft 431 , shaft 451 ) of set of golf clubs 400 can progressively decrease across set of golf clubs 400. For example, the shaft length of shaft 431 of golf club 430 can be shorter than the shaft length of shaft 41 1 of golf club 410. Similarly, the shaft length of shaft 451 of golf club 450 can be shorter than the shaft length of shaft 431 of golf club 430.

[0044] In some embodiments, for any second golf club having a progressively next higher loft angle than any first golf club in a set of golf club (e.g., set. of golf clubs 400), the camber radius of curvature of the second golf club can be at least approximately 0.125 in. / 03.175 cm less than the camber radius of curvature of th first golf club. For example, the camber radius of curvature of golf club 430 can be at least approximately 0.125 in. / 0.31 75 era less than the camber radiu of curvature of go lf club 410, and the camber radius of curvature of golf c lub 50 can be at least approximately 0.125 in. / 0.3175 cm less than th camber radius of curvature of golf club 430, In many embodiments, the camber radius of curvature of any golf club (e.g. golf club 410, golf club 430, golf club 450) in set of golf clubs 400 can be less than approximately 6,5 in, / 16.51 cm.

0045] As described, in .many embodiments fairway woods with lower loft angles can have a larger camber radius of 'curvature, and fairwa woods with^' higher loft angles can have a smaller camber radius of curvature. Fairway woods with lower loft angles, such as a 3-wood, are often used for longer-distance shots, such as shots from the tee or longer shots with good lies from the fairway. Many golfers want to hit such shots as far as possible, and/or hit such shots with greater accuracy and consistency than typically had with a driver, increasing the camber radius of curvature or), fairwa woods with lower loft angles can. advantageously lower the center of gravity of the goif club head and/or can increase the size of th face plate, as an increased camber radius of curvature results in a -flatter sole region and less relief at the beet and toe regions. Increasing the camber radius of curvature can beneficially promote greater surface area on the low toe and/or low bee! portions of the face plate. Increasing the surface area of the face plate can advantageously result in an increased shot distance upon striking the ball with a lower- lofted fairway wood,, as the greater surface area ca result in a greater bounce. Lowering the center of gravity of the golf club head can beneficially reduce the gear effect on the ball upon striking the ball, which can advantageously result in an increased shot distance upon striking the bail with a lower- lofted fairway wood, as a ball hit by a fairway wood generally already ha more than enough gear effect.

[0046] In many embodiments, fairway woods with higher loft angles can have a smaller camber radius of curvature; Fairway woods with higher loft angles, such as a 5 -wood and/or a ?-wood, are often used for shots of discrete distances and/or for shots from a variety of lies. Such shots generally require a versatile club, such as one that can more easily go through rough and/or handle well at various lie angles^'. Decreasing the camber radius of curvature on fairway woods with higher loft angles can create a more rounded sole region, which can advantageously have greater toe and/or heel relief A more rounded sole region can beneficially pass more easily through rough and/or can beneficially handle various lie angles.

[0047] Although versatility can still be important in lower-lofted fairway woods, some versatility can be sacrificed to increase face size and/or lower the center o gravity in the lower- lofted fairway woods to maximize shot distance with the lower-lofted fairway woods.

[0048] Returning to the -drawings.- -FID. 5 illustrates a flow chart lor a method 500 of providing a set of golf clubs in accordance with the present disclosure. Method 500 is merely exemplary and is not limited to the embodiments presented herein. Method 500 can be employed in many different embodiments or examples not specificall depicted o described herein. In some embodiments, the procedures, the processes, and/or the activities of method 500 can be performed in. the order presented. In other embodiments, the procedures, the processes, and/or the activities of method 500 ca be performed in any suitable order. In stilt other embodiments, one or more of the procedures, the processes, and/or the activities of method 500 can be combined, or skipped.

[0049] Referring to FIG . 5, method 500 can include a block 510 of providing a set of golf ebb heads, in many embodiments, the set of golf club heads can be similar or identical to golf club head set 200 (FIGs, 2-3), In some embodiments, the set of golf club heads of method 500 can include two. or more fairway wood-type golf club heads. In the same or other embodiments, the set. of golf club heads of method 500 can include three or more fairway "wood-type^' golf club heads. For example, the fairway wood-type golf club heads can be identical or similar to golf club head 210 (FiGs.. 2-3), golf club head 230 (FIGs. 2-3), and/or golf club head 250 (FIGs. 2- 3). and/or also can be identical or similar to golf club head 412 (FIG. 4), golf club head 432 (FIG. 4), and/or golf ciub head 452 (FIG. 4). The fairway wood-typ golf ciub heads of method 500 il each be provided via easting, forging, milling, machining, molding, and/o other processes, where the portions of the fairway wood-type golf club heads can be a single piece or can include several pieces coupled together such as via welding, brazing, and/or adhesives,

[0050] In many embodiments, the fairway wood-type golf club heads can each have a different loft angle, in several embodiments, the fairway wood-type golf club heads can each include a sole. The sole can be similar or identical to sole 1 15 (FIG. 1), sole 215 (FIGs. 2-3), sole 235 (FIGs. 2-3), and/or sole 255 (FiGs. 2-3). In some embodiments, the sole can include center point. The center point can be similar or identical to center point 1 I S (FIG, I), center point 218 (FIGs, 2-3), center point 238 (FIGs, 2-3), and/or center point .258 (FIGs, 2-3), in various embodiments, the center point of the sole can be located on a vert ical line extending through an engineered impact point of the fairway wood-type golf club head when the fairwa wood-type golf club head is positioned at a nominal lie angle. The engineered impact point can be similar or identical to engineered impact point 1 16 (FIG. 1 ).

[0051] In many embodiments, the sole can include a camber region. The camber region can be similar or identical to camber region 1 17 (FIG, 1 ), camber region 21 ? (FIGs. 2-3), camber region 237 (FIGs. 2-3), and/or camber region 257 (FIGs. 2-3). In some embodiments, the camber region of the sole can be located at approximately 0.5 in. / 1 .27 cm behind a leading edge, of the sole. In many embodiments, the camber region can have a radius of curvature.. The radius of curvature can be similar or identical to camber radius of curvature 1 1.9 (FIG. 1 ), camber radius of curvature 319 (FIG. 3), camber radius of curvature 339 (FIG, 3), and/or camber radius of curvature 359 (FIG-. 3), In some embodiments, the radius of curvature for each of the two or more fairwa wood-type golf club heads can be less than approximately 6,5 in. ,^' 16,51 cm. In many embodiments, the camber region, can extend at. least approximately 0.5 in. / 1 ,27

5 1 cm from the center point in each of a toe direction and a heel direction. For example, the toe direction can be i ts a direction from the cesiter point toward a toe of the fairway wood-type golf club head. The toe can be similar or identical to toe 112 (FIG. 1 ), toe 312 (FIG. 3), toe 332 (FIG. 3), and/or toe 352 (FIG. 3). The heel direction can he in a direction from the center point toward a heel of the fairway wood-type golf club head. The heel can be similar or identical to heel 113 (FIG. 1 ), heel 13 (FIG. 3), heel 333 (FIG. 3), and/or heel 353 (FIG. 3).

|0 52] hi many embodiments, the loft angles of the two or more fairway wood-type golf club heads can progressively increase across the two or more fairway wood-type golf club heads, and the radii of curvature of the two or more fairway wood-type golf club heads can progressively decrease across the two or mote fairway wood-type golf club heads. In some embodiments the loft angle of a first fairway wood-type golf club head of the two or more fairwa wood-type golf club heads is less than a loft angle of a second fairway wood-type golf club head of the two or more fairway wood-type golf club heads, and. the radius of curvature of the second fairway wood-type golf club head is at least approximately 0, 125 inch les than the radius of curvature of the first fairway wood-type golf club head, in a number of embodiments, the loft angle of a third fairway wood-type golf club head of the two or more fairway wood-type golf clu heads is greater than, a loft angle of th seco d fairway wood-type golf club head, and th radius of curvature of the third fairway wood-type golf club head is at least, approximately Q, 125 inch less than the radius of curvature of the second fairway wood-type golf club head.

[0053] Method 500 also can include a block 520 of providing a set of shafts. The set of shafts of method 500 can be similar or identical to two r mor of shaft 41 1 (FIG. 4), shaft 43 i (FIG. 4), and shaft 451 (FIG, 4). Each of the shafts of the set of shaft of method 500 can be provided via casting, forging, milling, machining, ajotdittg, ¾nd or other processes.

[0054J Method 500 also can include a block 530 of assembling each shaft of the set of shafts with each club head of the set of club heads. Each of the golf club heads of the set of set of golf club heads of method 500 and each of the shafts of the set of shafts of method 500 can be assembled through welding, brazing, adhesives, and/or other processes.

[0055 J Although the golf clubs and golf club heads with variable camber have been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes ma be made without departing from the spirit, or scope of the present disclosure. For example, to one of ordinary skill in the art. it wi ll be readi ly apparent that blocks 510, 520, and/or 530 of FIG. 5 may be comprised of many different procedures, processes, and activities and be performed in many different orders, that various element of FIGs. 1 -5 may be modified, and that the foregoing discussion of certain of these embodiments does not necessarily represent a complete description of all possible embodiments. [0056] As the rules to golf may change from t ime to rime (e.g., new regulations may be adopted or old rates may be eliminated or modified by golf standard organizations and/or governing bodies such as the United States Golf Association (.USGA), the Royal and Ancient Golf Club of St, Andrews (R&A), etc. ), golf equipment related to the apparatus, methods, and articles of manufacture described herein may be conforming or non-conforming to the rules of go lf at any particular time. Accordingly, golf equipment related to the apparatus, methods, and articles of manufacture described herein may be. advertised, offered for sale, and/or sold as conforming or non-coni¾rming golf equipment The -apparatus, methods, and articles of manu acture^' described herein are not limited in this regard,

[0057] While the above examples may be described m connection with a fairway wood-type golf club head, the apparatus, methods, and articles of manufacture described herein may be applicable to other types of golf clubs such as a driver wood-type golf club, an iron-type golf club, a wedge-type golf club, or a putter-type golf club. Alternatively, the apparatus, methods, and articles of manufacture described herein may be applicable other type of sports equipment such as a hockey stick, a tennis racket, a fishing pole, a ski pole, etc,

10058] Additional examples of such changes hav been given in the foregoing description. Other permutations of the different embodiment having one or more of the features of the various figures are likewise contemplated. Accordingly, the disclosure of embodiments is intended to be illustrative and is no intended to be limiting. It is intended tha the scope of the present disclosure shall be limited only to the extent required by the appended claims,

[0059] The golf club heads with variable camber discussed herein may be implemented in variety of embodiments, and the foregoing discussion of certain of these embodiments does not necessarily represent a complete- description of all. possible embodiments. Rather, the detailed description of the drawings, and the drawings themselves, disclose at least one preferred embodiments, and may disclose alternative embodiments.

[0060] All elements claimed in any particular claim are essential to the embodiment claimed in that particular claim. Consequently, replacement of one or more claimed elements constitutes reconstruction and not. repair. Additionally, benefits, other advantages, and solutions to problems have been described with regard to specific embodiments. The benefits, advantages, solutions to problems, and any -element OF elements that may cause any benefit, advantage, or solution to occur or become more pronounced, however, are not to be construed as critical, required, or essential features or elements of any or all of the claims, unless such benefits, advantages, solutions, or elements are expressly stated in such claim,

[0061] Moreover, embodiments and limitations disclosed herein are not dedicated to the public under the doctrine of dedication if the embodiments and/or limitations: (1) are not expressly claimed in the claims; and (2) are or are potentially equivalents of express elements nd or limitations i ts the claims under the doctrine of equivalents.

Claims

What is claimed is;

1 , A set of golf club heads comprising:

tw or more fairway wood-type golf clubs heads, each comprising:

a different Soft angle; and

a sole comprising a center point and a camber region, the camber region

comprising a radius of curvature and extending at least approximately 0,5 inch from the center point in eac h of a toe direction and a heel direction, wherein:

the loft angles of the two or more fairwa y wood-type golf club heads progressively increase across the two or more fairway wood-type golf c lub heads; and

the radii of curvature of the two or more fairway wood-type golf club heads progressi ely decrease across the two or more fairway wood-type golf club heads,

2. The set of golf club heads of claim 1 further comprising three or more fairway wood-type golf c lub heads, each having a different loft angle, wherein:

the three or more fairway wood-type golf club heads comprise the two or more fairway wood-type golf club heads;

the loft angles of the three or more fairway wood-type golf club heads progressively increase across the three or more fairway wood-type golf club heads; and

the radii of curvature of the three or more fairway wood-type golf club heads

progressively decrease across the three or more fairway wood-type golf club heads.

3, The set of golf club heads of any one of claims i or 2„ wherein, for each of the two or more fairway wood-type golf club heads, the camber region of the sole is located at approximately 0.5 inch behind a leading: edge of the sole.

4. The set of golf club heads of any one of claims L 2, or 3, wherein, for each of the two or more fairway wood-type golf club heads, the eenter point of the sole is locaied on. a vertical line extending through an engineered impact point of the fairway wood-type golf club head when the fairway wood-type golf club head is posit ioned at a nominal lie angle.

5. The set of golf club heads of any one of claims ί, 2, 3, or 4, wherein:

the loft angle of a first fairway wood-type golf elub head of the two or more fairway wood-tvpe golf club heads is less than a loft angle of a second fairway wood-type golf club head of the two or more fairway wood-type ^'golf club heads; and

the radius of curvature of the second fairway wood-tvpe golf club head is at least approximately 0.125 inch less than the radius of curvature of the first fairway wood- type golf club head,

6. The set of gol f club heads of claim 5_S wherein:

the loft angle o a third fairway wood-type golf club head of the two or more fairway wood-type golf club heads is greater than a loft angle of the second fairway wood-type golf club head; and

the radius of curvature of the third fairway wood-type golf club head is at least

approximately 0,125 inch less than the radius of curvature o the second fairway wood- type golf club head.

7. The set of golf club heads of any one of claims L 2, 3, 4, 5, or 6, wherein, for each of the two or more fairway wood-type golf club heads, the radius of curvature is less than approximately 6.5 inches.

S, The set of golf elub heads of any one of claims 1, 2, 3, 4, 5, 6, or 7, wherei each of the two or more fairway wood-type go lf c lub heads comprises a body haying a volume of no more than approximatel 350 cubic centimeters.

9. A set of golf clubs comprising:

two or more fairway wood-type golf clubs each comprising:

a golf club head comprising:

a different loft angle; and

a sole comprising a center point and a camber region, the camber region comprising a radius of curvature a d extending at least approximately 0.5 inch from the center point in each of a toe direction and a hee l direction,

wherein: the loft angles of the golf club heads of the two or more fairway wood-type golf clubs progressively increase across the two or ^'mote fairway wood-type golf clubs; and

the radii of curvature of the g lf club heads of the two or more fairway wood-type golf clubs progressively decrease across the two or more fairway wood-type golf clubs.

10. The set of golf clubs of claim 9, wherein;

each of the two or more Ia irway wood-type golf c lubs comprise a shaft having a shaft length; and

the shaft lengths of the shafts of the two or more fairway wood-type golf clubs

progressively decrease across, the two or more fairway wood-type golf clubs,

11 , The set of golf c lubs of any one of c laims 9 or I 0, further comprising three or more fairway wood-type golf clubs each having a different loft angle, wherein:

the three or more fairway wood-type golf club heads compr ise the two or more iairway wood-type golf club heads;

the loft angles of the golf club heads of the three or more fairway wood-type golf clubs progressively increase across the three or more fairwa wood-type golf clubs; and the radii of curvature of the go lf e bb heads of the .three or more ^'fairway wood-type golf clubs progressi vel decrease across the three or more fairw ay wood-type go lf clubs.

12. The set of golf clubs of claim 1 1. wherein the three of more fairway wood-type golf clubs comprise a 3-wood-type golf club, a 5÷ wood-type golf club, and a 7-wood-type golf e!ub.

13, The set of golf clubs of any one of claims 9, 10, .1.1, o 1:2, wherein, for each of the two or more fairway wood-type golf clubs, the camber region of the sole is located at approximately 0.5 inch behind a leading edge of the sole.

14. The set of golf clubs of any one of claims 9, 10, 1 1 , 12. or 13, wherein, for each of the two or more fairway wood-type golf clubs, the center point of t he sole is located on a vertical line extending through an engineered impact point of the golf club head of the fairway wood-type golf c lu b when the golf club head is positioned at a nominal lie angle.

15, The set of golf clubs of any one of claims 9, 10, 1 1, 12, 13, or .14, wherein:

Π the loft angle of a first fairway wood-type golf club of the two or more .fairway wood- type golf clubs is less than a lo ft angle of a second fairway wood-type go lf club of the two or more fairway wood-type golf clubs; and

the .radius of curvature of the second fairway wood-type ^'golf club ^'is at least

approximately 0, 125 inch less than the radius of curvature of the first fairway wood- type golf club.

16. The set of golf clubs of claim 15, wherein:

the loft angle of a third fairway wood-type golf club of the two or more fairway wood- type golf clubs is greater than a loft angle of the second fairway wood-type golf club; and

the radius of curvature of the third fairway wood-type golf club is at least approximately 0.125 inch less t an the radius o curvature of the second fairway wood-type golf club.

17, The set o golf clubs of any one of claims 9, 10, 1 1 , 12, 13, 14, I S, or 16, wherein, tor each of the two or more fairwa wood-type golf clubs, the radius of curvature is less than

approximatel 6.5 inches.

1.8. The set of golf clubs of claim 9, 10, 1 1, 12, 13, 14, 15, 16, or 1 7, wherein the golf club head of each of the two or more fairway wOo.d-t.ype golf clubs comprises a body having a volume of no more than approximately 350 -cubic centimeters.

19. A method of providing a set of golf clubs comprising:

providing a set of go lf c lub heads, the set of golf club heads comprising two or more -fairway wood-type, golf clubs . heads, each comprising:

a different loft angle; and

a sole comprising a center point and a camber region, the camber region

comprising a radius of curvature and extending at least approximately 0.5 inch from the center point in each of a toe direction and a heel direct ion, providing a -set of shafts; and

assembling each shaft of the set of shafts with each club head of the set of club heads, wherein:

the loft angles of the two or more fairway wood-type golf club heads progressively increase across the two or more fairway wood-type golf club heads ; and the radii of curvature of the two or more fairway wood-type golf club heads progressively decrease across the two or more fairwa wood-type golf club heads.

20, The method of ciaim 1 , wherei the set of golf club heads comprise three or more fairway wood-type golf clubs, each ha ving a different loft angle, wherein:

the loft angles of the three or more feirway wood-type golf club heads progressively increase across the three or more fairway wood-type -golf club heads; and

the radii of curvature of the three or more fairway wood-type golf club heads

21 , The method of any one of claims 19 or 20, wherein, for each of the two or more fairway wood-type golf club heads, the camber region of the sole is located at approximately 0,5 inch behind a leading edge of the sole.

22, Th method of any one of claims 19,

20., or 21 , wherein;

the loft angle of a_. first fairway wood-type golf club head of ihe two or more fairway wood-type golf eluh heads is less than a loft angle of a second fairway wood-type golf c lub head of the two or more fairway wood-type golf c lub heads; and

the radius of curvature of the second fairway wood-type golf club head is at least approximatel 0,125 inch less than the radius of curvature of the first fairway wood- type golf club head.

23, The method of claims 22, wherein:

the loft angle of a third fairway wood-type golf club head of the two or more iairway wood-type golf club heads is grea ter than a loft angle of the second fairway wood-type golf club head; and

the radius of curvature of the third feirway wood-type golf club head is at least

approximately 0.125 inch less than the radius of curvature of the second fairway wood- type golf club head.

24, The method of any one of claims 19, 20, 21 , 22, or 23, wherein, for each of the two or more fairw ay wood-type golf club heads, the radius of curvature, is less than approximately 6.5 inches.

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