Iron golf club head with multi-weight assembly

Abstract

A multi-weight assembly for a golf club head includes a primary weight and a weighted retainer. The primary weight is inserted into a socket, which may be formed in a low-toe region of the golf club head, while the weighted retainer secures the primary weight within the socket. The primary weight and weighted retainer may be formed of different materials and / or have difference masses, thereby allowing for greater variation and range of total mass provided by the multi-weight assembly. In some examples, the primary weight provides a coarse adjustment of total mass, while the weighted retainer provides a fine adjustment of total mass.

Description

CROSS REFERENCE PRIORITIES

[0001] This claims the benefit of U.S. Provisional Application No. 63 / 593,184 filed Oct. 25, 2023; the contents of which are fully incorporated herein by reference.TECHNICAL FIELD

[0002] This disclosure relates generally to golf club heads and, more particularly, relates to weight assemblies for golf club heads.BACKGROUND

[0003] The distribution of weight on a golf club head can affect performance characteristics, such as the location of a center of gravity of the club head and / or moment of inertia. Some weight assemblies permit fine-tuning of the mass of the golf club head after assembly, when the club head has been joined to the shaft and grip. For example, weighting in the toe region of the club head can be fine-tuned using toe screws. In some cases, the toe screws are combined with other components to form weight assemblies. Currently known weight assemblies, however, allow an overly limited amount of mass to be added, do not provide a pleasing aesthetic appearance, and / or do not permit cooperation with other weighting components provided in the club head.BRIEF DESCRIPTION OF THE DRAWINGS

[0004] To facilitate further description of the embodiments, the following drawings are provided in which:

[0005] FIG. 1 is a side elevation view of a golf club head according to the present disclosure.

[0006] FIG. 2 is an enlarged side elevation view detailing a toe region of the golf club head of FIG. 1.

[0007] FIGS. 3A-3C are perspective views of an exemplary socket provided in the toe region of the golf club head of FIG. 1.

[0008] FIGS. 4A-4C are perspective views of an exemplary multi-weight assembly for use with the golf club head of FIG. 1.

[0009] FIGS. 5A-5C are perspective views of an exemplary multi-weight assembly for use with the golf club head of FIG. 1.

[0010] FIGS. 6A-6C are perspective views of an exemplary multi-weight assembly for use with the golf club head of FIG. 1.

[0011] FIGS. 7A-7C are perspective views of an exemplary multi-weight assembly for use with the golf club head of FIG. 1.

[0012] FIGS. 8A-8C are perspective views of an exemplary multi-weight assembly for use with the golf club head of FIG. 1.

[0013] FIGS. 9A-9B are perspective views of an exemplary multi-weight assembly for use with the golf club head of FIG. 1.

[0014] FIGS. 10A-10B are perspective views of an exemplary multi-weight assembly for use with the golf club head of FIG. 1.

[0015] FIGS. 11A-11B are perspective views of an exemplary multi-weight assembly for use with the golf club head of FIG. 1.

[0016] FIGS. 12A-12B are perspective views of an exemplary multi-weight assembly for use with the golf club head of FIG. 1.

[0017] FIG. 13 is a perspective view of an exemplary multi-weight assembly for use with the golf club head of FIG. 1.DEFINITIONS

[0018] Multi-weight assemblies are described herein for use with a golf club head. The multi-weight assemblies are mechanically attached and have multiple mass variation methods. The multi-weight assembly, alone or in combination with other weights, distributes mass around the club head to achieve desired performance-related characteristics, such as location of the center of gravity of the club head and / or magnitude of moment of inertia in any desired plane. In some examples, the multi-weight system allows fine-tuning of a final weight distribution of the club head after assembly. Advantages provided by the multi-weight assemblies include expanding a range of mass that can be added to the club head, improving aesthetics of the club head, and / or interacting with other weights provided in the club head, thereby obtaining the desired performance-related characteristics.

[0019] 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 invention. Additionally, elements in the drawing figures are not necessarily drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help improve understanding of embodiments of the present invention. The same reference numerals in different figures denote the same elements.

[0020] The terms “first,”“second,”“third,”“fourth,” and the like in the description and in the claims, if any, are used for distinguishing between 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 in sequences other than those illustrated or otherwise described herein. Furthermore, the terms “include,” and “have,” and any variations thereof, are 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.

[0021] 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 be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in other orientations than those illustrated or otherwise described herein.

[0022] The terms “couple,”“coupled,”“couples,”“coupling,” and the like should be broadly understood and refer to connecting two or more elements or signals, electrically, mechanically and / or otherwise.

[0023] The term “strike face,” as used herein, refers to a club head front surface that is configured to strike a golf ball. The term strike face can be used interchangeably with the term “face.”

[0024] The term “strike face perimeter,” as used herein, can refer to an edge of the strike face. The strike face perimeter can be located along an outer edge of the strike face where the curvature deviates from a bulge and / or roll of the strike face.

[0025] The term “geometric centerpoint,” or “geometric center” of the strike face, as used herein, can refer to a geometric centerpoint of the strike face perimeter, and at a midpoint of the face height of the strike face. In the same or other examples, the geometric centerpoint also can be centered with respect to an engineered impact zone, which can be defined by a region of grooves on the strike face. As another approach, the geometric centerpoint of the strike face can be located in accordance with the definition of a golf governing body such as the United States Golf Association (USGA).

[0026] The term “ground plane,” as used herein, can refer to a reference plane associated with the surface on which a golf ball is placed. The ground plane can be a horizontal plane tangent to the sole at an address position.

[0027] The term “loft plane,” as used herein, can refer to a reference plane that is tangent to the geometric centerpoint of the strike face.

[0028] The term “loft angle,” as used herein, can refer to an angle measured between the loft plane and the XY plane (defined below).

[0029] The term “face height,” as used herein, can refer to a distance measured parallel to loft plane between a top end of the strikeface perimeter and a bottom end of the strikeface perimeter.

[0030] The term “lie angle,” as used herein, can refer to an angle between a hosel axis, extending through the hosel, and the ground plane. The lie angle is measured from a front view.

[0031] The “depth” of the golf club head, as described herein, can be defined as a front-to-rear dimension of the golf club head.

[0032] The “height” of the golf club head, as described herein, can be defined as a top rail-to sole dimension of the golf club head. In many embodiments, the height of the club head can be measured according to a golf governing body such as the United States Golf Association (USGA).

[0033] The “length” of the golf club head, as described herein, can be defined as a heel-to-toe dimension of the golf club head. In many embodiments, the length of the club head can be measured according to a golf governing body such as the United States Golf Association (USGA).

[0034] The “strike face height” of the golf club head, as described herein, can be defined as a height measured parallel to loft plane between a top end of the strike face perimeter near top rail and a bottom end of the strike face perimeter near the sole. The “strike face height may be measured at any location across the extent of the face.

[0035] The “geometric center height” of the golf club head, as described herein, is a height measured perpendicular from the ground plane to the geometric centerpoint of the golf club head.

[0036] The “leading edge” of the club head, as described herein, can be identified as the most sole-ward portion of the strike face perimeter.

[0037] An “XYZ” coordinate system of the golf club head, as described herein, is based upon the geometric center of the strike face. The golf club head dimensions as described herein can be measured based on a coordinate system as defined below. The geometric center of the strike face defines a coordinate system having an origin located at the geometric center of the strike face. The coordinate system defines an X-axis, a Y-axis, and a Z-axis. The X-axis extends through the geometric center of the strike face in a direction from the heel to the toe of the fairway-type club head. The Y axis extends through the geometric center of the strike face in a direction from the top rail to the sole of golf club head. The Y-axis is perpendicular to the X-axis. The Z-axis extends through the geometric center of the strike face in a direction from the front end to the rear end of the golf club head. The Z-axis is perpendicular to both the X-axis and the Y-axis.

[0038] The term or phrase “center of gravity position” or “CG location” can refer to the location of the club head center of gravity (CG) with respect to the XYZ coordinate system, wherein the CG position is characterized by locations along the X-axis, the Y-axis, and the Z-axis. The term “CGx” can refer to the CG location along the X-axis, measured from the origin point. The term “CG height” can refer to the CG location along the Y-axis, measured from the origin point. The term “CGy” can be synonymous with the CG height. The term “CG depth” can refer to the CG location along the Z-axis, measured from the origin point. The term “CGz” can be synonymous with CG depth.

[0039] The term or phrase “CG projection” or “CG projection point” can refer to the location where the CG is projected on the strike face, wherein the projection is taken normal to the loft plane.

[0040] The XYZ coordinate system of the golf club head, as described herein defines an XY plane extending through the X-axis and the Y-axis. The coordinate system defines XZ plane extending through the X-axis and the Z-axis. The coordinate system further defines a YZ plane extending through the Y-axis and the Z-axis. The XY plane, the XZ plane, and the YZ plane are all perpendicular to one another and intersect at the coordinate system origin located at the geometric center of the strike face. In these or other embodiments, the golf club head can be viewed from a front view when the strike face is viewed from a direction perpendicular to the XY plane. Further, in these or other embodiments, the golf club head can be viewed from a side view or side cross-sectional view when the heel is viewed from a direction perpendicular to the YZ plane.

[0041] The golf club head further comprises a coordinate system centered about the center of gravity. The coordinate system comprises an X-axis, a Y-axis, and a Z-axis. The X-axis extends in a heel-to-toe direction. The X′-axis is positive towards the heel and negative towards the toe. The Y′-axis extends in a sole-to-top rail direction and is orthogonal to both the Z′-axis and the X′-axis. The Y′-axis is positive towards the top rail and negative towards the sole. The Z-axis extends front-to-rear, parallel to the ground plane and is orthogonal to both the X′-axis and the Y′-axis. The Z′-axis is positive towards the strike face and negative towards the rear.

[0042] The term or phrase “moment of inertia” (hereafter “MOI”) can refer to a value derived using the center of gravity (CG) location. The MOI can be calculated assuming the club head includes the body and the hosel structure. The term “MOIxx” or “Ixx” can refer to the MOI measured about the X′-axis. The term “MOIyy” or “Iyy” can refer to the MOI measured about the Y′-axis. The term “MOIzz” or “Izz” can refer to the MOI measured about the Z′-axis. The MOI values MOIxx, MOIyy, and MOIzz determine how forgiving the club head is for off-center impacts with a golf ball.

[0043] The term “iron,” as used herein, can, in some embodiments, refer to an iron-type golf club head having a loft angle that is less than approximately 50 degrees, less than approximately 49 degrees, less than approximately 48 degrees, less than approximately 47 degrees, less than approximately 46 degrees, less than approximately 45 degrees, less than approximately 44 degrees, less than approximately 43 degrees, less than approximately 42 degrees, less than approximately 41 degrees, or less than approximately 40 degrees. Further, in many embodiments, the loft angle of the club head is greater than approximately 16 degrees, greater than approximately 17 degrees, greater than approximately 18 degrees, greater than approximately 19 degrees, greater than approximately 20 degrees, greater than approximately 21 degrees, greater than approximately 22 degrees, greater than approximately 23 degrees, greater than approximately 24 degrees, or greater than approximately 25 degrees.

[0044] In many embodiments, such as for “game improvement irons”, the volume of the club head is less than approximately 65 cm3, less than approximately 60 cm3, less than approximately 55 cm3, or less than approximately 50 cm3. In some embodiments, the volume of the club head can be approximately 50 cm3 to 60 cm3, approximately 51 cm3-53 cm3, approximately 53 cm3-55 cm3, approximately 55 cm3-57 cm3, or approximately 57 cm3-59 cm3.

[0045] In many embodiments, such as for “player's irons”, the volume of the club head is less than approximately 45 cm3, less than approximately 40 cm3, less than approximately 35 cm3, or less than approximately 30 cm3. In some embodiments, the volume of the club head can be approximately 31 cm3-38 cm3 (1.9 cubic inches to 2.3 cubic inches), approximately 31 cm3-33 cm3, approximately 33 cm3-35 cm3, approximately 35 cm3-37 cm3, or approximately 37 cm3-39 cm3.

[0046] In some embodiments, the iron can comprise a total mass ranging between 180 grams and 260 grams, 190 grams and 240 grams, 200 grams and 230 grams, 210 grams and 220 grams, or 215 grams and 220 grams. In some embodiments, the total mass of the club head is 215 grams, 216 grams, 217 grams, 218 grams, 219 grams, or 220 grams.

[0047] A iron-type golf club head can comprise a “maximum strike face height” located at a point along the X-axis where the distance measured parallel to the loft plane between the lower strike face perimeter and the upper strike face perimeter is larger than at any other point along the X-axis.

[0048] The term or phrase “cavity-back” as used herein, can refer to an iron-type golf club head comprising a strike face perimeter rear extension forming a rear perimeter wall that defines a rear cavity.

[0049] The term or phrase “muscle-back” as used herein, can refer to an iron-type golf club head comprising an iron-type golf club head comprising a thicker lower portion measured front to back, and a thinner upper portion measured front to back.

[0050] The term “hollow body” as used herein, can refer to an iron-type golf club head comprising an interior void not exposed to the exterior.DESCRIPTION

[0051] Multi-weight assemblies mechanically attached in the toe area of an iron-type golf club head are described herein. The multi-weight assembly, alone or in combination with other weights, distributes mass around the club head to achieve desired performance-related characteristics, such as location of the club head center of gravity 60 and / or magnitude of moment of inertia in any desired plane. In some examples, the multi-weight assembly allows fine-tuning of a final weight distribution of the club head after assembly. Advantages provided by the multi-weight assemblies include expanding a range of mass that can be added to the club head perimeter at the toe, improving aesthetics of the club head, and / or interacting with other weights provided in the club head, thereby to obtain the desired performance-related characteristics.

[0052] In some examples, the golf club head 100 is a cavity back type iron golf club head. The cavity back type iron golf club head can comprise a rearward extension of the top rail 110, the toe portion 101, the heel portion 102, and the sole 107; such that the rearward extension forms a perimeter defining a rear cavity. Further, a rear surface of the strike face 112 is exposed when the golf club head 100 is viewed from a rear perspective.

[0053] In some examples, the golf club head 100 is a muscle-back type iron golf club head. The muscle-back type iron golf club head comprises an upper rear portion 147 and a lower rear portion 149. The upper rear portion 147 comprises a thickness between the front portion exterior surface 150 and the rear portion exterior surface 151 measured perpendicular to the loft plane 190 hat is less than 50% of a lower rear portion maximum thickness and is generally a uniform thickness. The upper rear portion 147 extends from approximately the xz plane to the top rail 110. The lower rear portion 149 extends from the sole 107 to approximately the xz plane. The lower rear portion 149 comprises a variable thickness between the front portion exterior surface 150, and the rear portion exterior surface 151 measured perpendicular to the loft plane. The lower rear portion thickness is at a maximum adjacent the sole 107 and decreases toward the xz plane where the thickness transitions to the upper rear portion thickness.

[0054] In some examples, the golf club head 100 is a hollow body or cap back type iron golf club head. Referring to FIG. 1, the golf club head 100 comprises a toe portion 101, a heel portion 102 opposite the toc portion 101, top portion 106 comprising a top rail 110, a sole 107 opposite the top portion 106, a front portion 103 comprising a strike face 112, a rear portion 104 opposite the front portion 103, and a hosel 105 comprising a hosel axis 70. The strike face 112 further comprises a strike face perimeter 114 and a strike face geometric center 80. The front portion 103, top portion 106, rear portion 104, toc portion 101, heel portion 102, and sole 107 cooperate to enclose an interior void 118. The rear portion 104 may be formed integrally with at least portions of the top rail 110, sole 107, heel portion 102, and toe portion 101 to fully enclose the interior void 118 (i.e., a “hollow body”). Alternatively, the rear portion 104 may define a rear opening that is subsequently closed off by a separately formed component, such as a cap or badge, to enclose the interior void 118. A the strike face rear surface is at least partially exposed to the interior void 118. A front of the rear portion 104 is at least partially exposed to the interior void 118. An upper surface of the sole 107 is at least partially exposed to the interior void 118. A lower surface of the top rail 110 is at least partially exposed to the interior void 118. A heelward surface of the toe portion 101 is at least partially exposed to the interior void 118, and a toeward surface of the heel portion 102 is at least partially exposed to the interior void 118.

[0055] The multi-weight assemblies described herein are located in a toe region of the golf club head 100. The strike face 112 further comprises a plurality of score-lines 111 parallel to the x-axis 35 across a front surface of the strike face 112. Each of the plurality of score-lines 111 comprises a heelward end 115 and a toeward end 116. A score-line length is defined between the heelward end and the toeward end of each score-line. The plurality of score-lines 111 are vertically spaced from one another between the top portion 106 and the sole 107 and define a score-line area between a topmost score-line and a bottommost score-line. The heelward ends 115 of the plurality of score-lines 111 are not all colinear. Instead, a lower portion of the heelward ends 115 are colinear, and an upper portion of the heelward ends terminate progressively further toeward as the score-lines are located closer to the top portion 106. The toeward ends 116 of the plurality of score-lines 111 are colinear. The score-line area is further defined between the heelward ends 115 and toeward ends 116 of the plurality of score-lines 111.

[0056] Using the scorelines, a club head toe portion 101 can be defined. Referring to FIGS. 1-2, strike face 112 defines an imaginary score-line area heel boundary plane 135, which is parallel to the yz plane and intersects the colinear, lower portion of the heelward-most ends 115 of the plurality of score lines 111. The strike face 112 further defines an imaginary score-line area toe boundary plane 130, which is parallel to the yz plane and intersects the toeward ends 116 of the score lines 111, wherein the score-line area toe boundary plane 130 demarcates the toe 101 from the remainder of the club head 100. The imaginary score-line area toe boundary plane 130 intersects the top rail 110 at a toe-top rail point 131 and intersects the sole 107 at a toe-sole point 132. The top rail 110 transitions to the toe portion 101 at the toe-top rail point 131. The sole 107 transitions to the toe portion 101 at the toe-sole point 132.

[0057] Referring to FIG. 2, the golf club head 100 defines an imaginary low-toe boundary plane 140 parallel to the xz plane and intersecting the score-line area toe boundary plane 130. In the illustrated example, the imaginary low-toe boundary plane 140 intersects the score-line area toe boundary plane 130 at a low toe point 133 that is 60% of the toe face height 175 above the toe-sole point 132. A low-toe region 145, as described herein, is the region of the toe portion 101 located below the low-toe boundary plane 140. Low toc regions 245, 345, 445, 545, 645, 745, 845, 945, 1045 are similarly described.

[0058] Each of the multi-weight assemblies (290, 390, 490, 590, 690, 790, 890, 990, and 1190) described herein comprises a socket in the toe portion 101 configured to receive the multi-weight assembly, a multi-piece weight is a variety of forms, and a weight retainer. The multi-weight assembly is considered assembled with the golf club head when the primary weight is inserted in the socket and the weighted retainer is coupled to the golf club head to retain the primary weight within the socket. Generally, the sockets described are imperforate in that the socket does not communicate with interior void 118. Socket 1080 is in communication with the interior void 118.

[0059] The primary weight may be used to adjust CG position, moment of inertia, and swing weight of the golf club head by altering the mass of the primary weight. The primary weight mass may be in the range of 5 grams to 50 grams. The primary weight mass may be 5 grams, 6 grams, 7 grams, 8 grams, 9 grams, 10 grams, 11 grams, 12 grams, 13 grams, 14 grams, 15 grams, 16 grams, 17 grams, 18 grams, 19 grams, 20 grams, 21 grams, 22 grams, 23 grams, 24 grams, 25 grams, 26 grams, 27 grams, 28 grams, 29 grams, 30 grams, 31 grams, 32 grams, 33 grams, 34 grams, 35 grams, 36 grams, 37 grams, 38 grams, 39 grams, 40 grams, 41 grams, 42 grams, 43 grams, 44 grams, 45 grams, 46 grams, 47 grams, 48 grams, 49 grams, or 50 grams. The primary weight mass may be in a range of 1% to 30% of the total mass of the assembled golf club head 100. The primary weight mass may be 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, or 30% of the club head total assembled mass. The primary weight volume may be in a range of 2 cc to 25 cc. The primary weight volume may be 2 cc, 3 cc, 4 cc, 5 cc, 6 cc, 7 cc, 8 cc, 9 cc, 10 cc, 11 cc, 12 cc, 13 cc, 14 cc, 15 cc, 16 cc, 17 cc, 18 cc, 19 cc, 20 cc, 21 cc, 22 cc, 23 cc, 24 cc, or 25 cc. The primary weight length 292 may be in a range of 0.1 inch to 1.0 inches. The primary weight length 292 may be 0.1 inch, 0.2 inch, 0.3 inch, 0.4 inch, 0.5 inch, 0.6 inch, 0.7 inch, 0.8 inch, 0.9 inch, or 1.0 inch. The primary weight width 297 may be in a range of 0.1 inch to 0.5 inch. The primary weight width 297 may be 0.1 inch, 0.2 inch, 0.3 inch, 0.4 inch, or 0.5 inch. The primary weight thickness 298 may be in a range of 0.05 inch to 0.2 inch. The primary weight thickness 298 may be 0.05 inch, 0.06 inch, 0.07 inch, 0.08 inch, 0.09 inch, 0.10 inch, 0.11 inch, 0.12 inch, 0.13 inch, 0.14 inch, 0.15 inch, 0.16 inch, 0.17 inch, 0.18 inch, 0.19 inch, or 0.20 inch. The primary weight material may be tungsten, a tungsten alloy, a tungsten / steel alloy, a steel alloy, a titanium alloy, or an aluminum alloy. The primary weight density may be in a range of 19.3 g / cm3 to 2.7 g / cm3. The primary weight material density may be 2.7 gm / cm3, 3.0 gm / cm3, 3.5 gm / cm3, 4.0 gm / cm3, 4.5 gm / cm3, 5.0 gm / cm3, 5.5 gm / cm3, 6.0 gm / cm3, 6.5 gm / cm3, 7.0 gm / cm3, 7.5 gm / cm3, 8.0 gm / cm3, 8.5 gm / cm3, 9.0 gm / cm3, 9.5 gm / cm3, 10.0 gm / cm3, 10.5 gm / cm3, 11.0 gm / cm3, 11.5 gm / cm3, 12.0 gm / cm3, 12.5 gm / cm3, 13.0 gm / cm3, 13.5 gm / cm3, 14.0 gm / cm3, 14.5 gm / cm3, 15.0 gm / cm3, 15.5 gm / cm3, 16.0 gm / cm3, 16.5 gm / cm3, 17.0 gm / cm3, 17.5 gm / cm3, 18.0 gm / cm3, 18.5 gm / cm3, 19.0 gm / cm3, or 19.3 gm / cm3.

[0060] A socket 180 is formed in the low-toe region 145, as shown in FIGS. 3A, 3B, and 3C, to provide a void for receiving a multi-weight assembly as will be described in greater detail below. The socket 180 comprises a socket aperture 183 formed at an exterior surface of the golf club 100, a socket base surface 184 located inside the low toe region 145 and opposite the socket side wall 181 extending from the socket aperture 183 to the socket base surface 184. In some examples, the socket side wall 181 and the socket base surface 184 are imperforate, so that the socket 180 does not fluidly communicate with the interior void 118. In other examples, the socket 180 fluidly communicates with the interior void 118 through the socket side wall 181 and / or the socket base surface 184.

[0061] A multi-weight assembly 290 is at least partially received in the socket 180 to alter the mass properties of the golf club head. Specifically, when the multi-weight assembly 290 is in the low-toc region 145, the club head CG 60 is moved further toeward and further soleward than it otherwise would be if the multi-weight assembly 290 were omitted.

[0062] Referring to FIGS. 1-3C, the socket 180 can be located within the low toe region 145, so that when the multi-weight assembly 290 is inserted into the socket 180, mass properties of the golf club head 100 are advantageously adjusted. The socket aperture 183 is formed in an exterior surface of the club head and lies within an imaginary socket aperture plane 182 defined by the edge(s) of the club head exterior surface that border the socket aperture 183. A socket aperture geometric center 189 lies within the imaginary socket aperture plane 182, and a socket axis 185 extends through the socket aperture geometric center 189 and is perpendicular to the imaginary socket aperture plane. The socket 180 has socket length 186, measured along the socket axis 184 from the socket aperture geometric center 189 to the socket base surface 184. A socket width 188 is measured perpendicular to the socket axis 185 at any point along the socket axis 185. In some examples, the socket width 188 is constant, while in other examples, the socket width 188 varies along the socket axis 184. The socket width may alter in a stepwise fashion, with a larger width at the socket opening, and discrete changes in the width at various depths forming ledges within the socket. The socket width may vary such that the width tapers to a smallest width at the socket base surface. The socket 180 further comprises a socket volume 187 and a socket aperture area. The socket side wall 181 may be cylindrical, prismatic, or any other shape. The socket side wall 181 may comprise threads. In some examples, the socket base surface 184 cooperates with the socket side wall 181 to define a blind hole recessed from the exterior surface of the golf club head 100, such that the socket 180 does not communicate with or intersect the interior void 118.Cylindrical Primary Weight with Threaded Retainer

[0063] Referring to FIGS. 4A-4C, the multi-weight assembly 290 comprises at least a primary weight 291 and a weighted retainer 270. The primary weight 291 is sized and configured for insertion into the socket 180, and comprises a primary weight material having a primary weight material density. The primary weight 291 comprises a primary weight mass, a primary weight volume, a primary weight length 292 extending along a primary weight longitudinal axis 294, a primary weight width 297 measured perpendicular to the primary weight longitudinal axis, and a primary weight maximum thickness 298 measured perpendicularly from a weight inner surface to a weight outer surface. In some examples, the primary weight width is constant, while in other examples, the primary weight width 297 varies along the primary weight longitudinal axis 294. Similarly, in some examples, the primary weight thickness 298 is constant, while in other examples, the primary weight thickness 298 varies along the primary weight longitudinal axis 294. The multi-weight assembly 290 may be either permanently or removably coupled to the club head 100. Both the primary weight 291 and the weighted retainer 270 may be removably coupled within the socket 180.

[0064] Still referring to FIGS. 4A-4C, the weighted retainer 270 is configured to secure the primary weight 291 the socket 180. The weighted retainer 270 comprises a weighted retainer material having a weighted retainer material density. The weighted retainer material density can be the same as or different from the primary weight material density. The weighted retainer 270 comprises a weighted retainer mass, a weighted retainer volume, a weighted retainer length 271 measured along a weighted retainer longitudinal axis 278, and a weighted retainer width 279 measured at any point along the weighted retainer length 271 perpendicular to the weighted retainer longitudinal axis 278. The multi-weight assembly 290 comprises a total weight assembly mass that comprises the sum of the primary weight mass and the weighted retainer mass.

[0065] FIGS. 4A, 4B, and 4C illustrate an exemplary golf club head 200 having a multi-weight assembly 290 that, when assembled, has the appearance of a traditional, single weight toe screw. A socket 280 formed in the golf club head 200 is sized to receive the multi-weight assembly 290. The multi-weight assembly 290 includes a primary weight 291 and a weighted retainer 270. The low toc region 245 is defined the same as low toe region 145 above. The socket 280 is located within the low toe region 245 of the golf club head 200, so that, when attached to the socket 280, the multi-weight assembly 290 advantageously alters the mass properties of the golf club head 200 by moving the club head CG down and toeward.

[0066] As best shown in FIG. 4A, the socket 280 comprises a socket base surface 284. The socket base surface 284 further comprises a recess 282. The recess 282 may be threaded or may be unthreaded. The socket 280 may be a cylindrical, prismatic, or other shaped recess below the surrounding golf club head 200 exterior surface, such that the socket 280 is a blind hole, not communicating with or intersecting the interior void 118. The socket 280 may further comprise a threaded recess 282 in the base surface 284. The threaded recess 282 is configured to receive a threaded tip 276 of the weighted retainer 270

[0067] Referring to FIGS. 4A-4C, the primary weight 291 is configured to be received within the socket 280 and comprises an outermost exterior surface 294, an innermost exterior surface 295, and an exterior sidewall 296. When assembled, the outermost exterior surface 294 of primary weight 291 may be completely obscured by the weighted retainer 270, such that the outermost exterior surface 294 is not exposed to the exterior of the golf club head 200. The exterior sidewall 296 may be threaded or unthreaded. The primary weight 291 comprises a central passage 293, which in the illustrated example comprises a cylindrical through hole defining an outermost primary weight exterior surface opening and an innermost primary weight exterior surface opening. The primary weight 291 comprises an annular shape surrounding the central passage 293. The primary weight 291 may comprise a frustoconical shape surrounding the central passage 293. The primary weight 291 is disposed along a central passage longitudinal axis 299 in the central passage 293. The central passage 293 may be threaded or unthreaded. A primary weight width 297 is defined as the distance from one point on the exterior sidewall to another point on the exterior sidewall perpendicular to and through the central passage longitudinal axis 299.

[0068] Still referring to FIGS. 4A-4C, the weighted retainer 270 comprises a fastener 272 sized for insertion through the central passage 293 of the primary weight 291. As best shown at FIG. 4C, the fastener 272 comprises a fastener head 273, a fastener shaft 274, and a fastener tip 275 distal from and opposite the fastener head 273. External threads 276 formed on at least the fastener tip 275 are configured to threadably engage the threaded recess 282 in the socket base surface 284. A tool receiving recess 277 may be provided on the fastener head 273. In the illustrated example, the fastener head 273 has a diameter that is larger than the diameter of the fastener shaft 274. Additionally, the fastener head 273 may have a larger diameter than the outside diameter of the primary weight 291, thereby concealing the primary weight 291 from an exterior of the golf club head. In some examples, the diameter of the fastener head 273 is roughly equal to the diameter of the socket aperture. The weighted retainer 270 comprises a weighted retainer mass, a weighted retainer volume, and a weighted retainer length 271. The fastener head 273 is at least partially received withing the socket aperture 283. An exterior of the fastener head may have the appearance of a conventional toe screw.Cylindrical Primary Weight with Press-Fit Retainer

[0069] A golf club head 300 having a multi-weight assembly 390 that closely matches the exterior surface of the golf club head 300, thereby concealing the presence of the multi-weight assembly 390. The weighted assembly is configured to be non-threadedly attached to the golf club head 300 in the low toe region 345. Referring to FIGS. 5A, 5B, and 5C, the golf club head includes a socket 380 for receiving the multi-weight assembly 390. The multi-weight assembly generally comprises a primary weight 391 and a weighted retainer 370. The socket 380 is located within the low-toe region 345, so that the multi-weight assembly 390, when coupled to the socket 380, advantageously alters the mass properties of the golf club head 300 by placing more mass low and toeward.

[0070] As best shown in FIG. 5A, the socket 380 is configured to receive the multi-weight assembly 390, and may have a cylindrical, prismatic, or other shaped opening recessed below the surrounding golf club head exterior surface, such that the socket 380 is a blind hole, not communicating with or intersecting the interior void 118. The socket 380 comprises a socket aperture 383 having a socket aperture area.

[0071] The multi-weight assembly 390 comprises a primary weight 391 sized for insertion into the socket 380. In some embodiments, the primary weight 391 mechanically engages the socket sidewall 381. In other embodiments, the primary weight 391 is slidably received in the socket 380. The multi-weight assembly 390 further includes a weighted retainer 370 for securing the primary weight 391 within the socket 380. As best shown in FIG. 5C, the weighted retainer 370 comprises a cap 371 sized for insertion into the socket 380 leaving no gaps and configured to conform to the club head surface profile in the low toe region 345. The cap shape is configured to the close the socket 380, and may be any shape necessary to close the socket opening. The cap is not threaded, and is retained in the socket opening

[0072] The primary weight 391 mechanically engages at least part of the interior surface of the socket 380. The primary weight 390 comprises a top surface 392 adjacent the cap 371 when assembled. The primary weight comprises a bottom surface 393 adjacent the socket base surface 384 when assembled. When assembled, the primary weight 391 is not visible from the exterior of the golf club head 300. The primary weight 391 further comprises a primary weight side surface 394. When assembled, the primary weight bottom surface 393 is adjacent to the socket base surface 384. The primary weight 391 is retained within the socket 380 by press fitting, swedging, adhesive bonding, snap fitting, or other retaining means except for a threaded retention. The primary weight side surface 394 is not threaded. The socket base surface 384 may have adhesive tape such as VHB in place to serve as an adhesive bond to the primary weight 391.

[0073] Cap 371 comprises a cap head 372 extending across the socket aperture 383, such that an exterior surface 374 of the cap head 372 is shaped to follow a contour of the low-toe region 345, and is visible from the exterior of the golf club head 300. The cap 371 further comprises an interior surface 375 that is adjacent to the primary weight top surface 392 when assembled. The cap 371 may be retained within the socket aperture by press fitting, adhesive bonding, snap fitting, or other retaining means except for a threaded retention. In some embodiments, the cap 371 is not threaded. The cap 371 may further be adhesively bonded or mechanically attached to the primary weight 391. The cap 371 further retains the primary weight 391 within the socket 380.

[0074] Because cap 371 is shaped to follow the exterior contour of the lower toe portion 145, it conceals the presence of the multi-weight assembly 390. The cap 371 may have any shape necessary to conform to the club head exterior contour, and the socket 380 may comprise an exterior lip shaped to receive the cap 371. In examples where neither the cap 371 nor the primary weight 391 are threaded, manufacturing costs may be lower.Interior Cylindrical Primary Weight with Outer Retainer

[0075] A multi-weight assembly 490 for a golf club head 400 comprises a weighted retainer 470 that surrounds and conceals a primary weight 491, thereby to provide an aesthetic appearance that is similar to that of a standard toe screw. The weighted retainer 470 includes an outer surface recess configured to receive a tightening tool. Referring to FIGS. 6A, 6B, and 6C, the multi-weight assembly 490 is received in a socket 480 formed in the low-toe region 445 of the golf club head, so that, when assembled, the multi-weight assembly 490 advantageously alters the mass properties of the golf club head 400 by moving the club head CG lower and toeward.

[0076] As best shown in FIG. 6A, the socket 480 may comprise a threaded cylindrical recess below the surrounding golf club head exterior surface, such that the socket 480 forms a blind hole, not communicating with or intersecting the interior void 118. The socket 480 comprises a socket aperture 483 defining a socket aperture area. The socket 480 further comprises a socket sidewall 481 that may include internal threads.

[0077] The primary weight 491 is configured to be received within the weighted retainer interior cavity 473. The primary weight 491 comprises a primary weight mass, a primary weight volume, a primary weight density, and a primary weight length 495 measured from a primary weight top surface to a primary weight bottom surface perpendicular to a primary weight longitudinal axis 496. The primary weight mass may vary in range from 1 gram to 30 grams. The primary weight mass may be 1 gram, 2 grams, 3 grams, 4 grams, 5 grams, 6 grams, 7 grams, 8 grams, 9 grams, 10 grams, 11 grams, 12 grams, 13 grams, 14 grams, 15 grams, 16 grams, 17 grams, 18 grams, 19 grams, 20 grams, 21 grams, 22 grams, 23 grams, 24 grams, 25 grams, 26 grams, 27 grams, 28 grams, 29 grams, or 30 grams. The primary weight 491 is removable from the weighted retainer 470. In some examples, different primary weights 491 having different masses may be provided, and a selected one of the primary weights 491 may be inserted into the weighted retainer 470. This allows the multi-weight assembly 490 to have a varied mass while using a single weighted retainer 470. The primary weight volume may be constant, such that a change in the primary weight mass is accomplished by a change in primary weight density. The primary weight 491 is placed through the fastener bottom aperture 478 into the fastener interior cavity 473. In some examples, the primary weight 491 is not threaded but instead is retained within the fastener interior cavity 473 by the fastener interior top wall 474, the fastener interior sidewall 475, and the socket base surface 484 when assembled. The primary weight 491 may additionally be adhesively retained within the fastener interior cavity 473. When assembled, the weighted retainer 470 may completely obscure the presence of the primary weight 491, such that no part of the primary weight 491 is exposed to or visible at the golf club head exterior surface.

[0078] The weighted retainer 470 comprises a hollow fastener 479. The hollow fastener 479 comprises a fastener body 468 sized for insertion into the socket 480, a fastener side wall 475 extending from a fastener head 472 to a fastener bottom rim 469, and a fastener interior cavity 473 extending from the fastener bottom rim 469 toward the fastener head 472. The fastener interior cavity 473 is sized to receive the primary weight 491, and the fastener exterior side wall 475 may comprise external threads for threadably engaging the internal threads of the socket side wall 481. The fastener top wall 474 and fastener interior sidewall 475 cooperate to form the fastener interior cavity 473. The fastener bottom rim 469 is located opposite the fastener head 472 and surrounds a fastener bottom aperture 478.

[0079] The weighted retainer 470 comprises a weighted retainer mass, a weighted retainer volume, a weighted retainer width 467, and a weighted retainer length 466. The weighted retainer 470 may have a single, consistent mass, but additional club head mass adjustments can be made by varying both the primary weight mass and the weighted retainer mass. The weighted retainer mass may vary in the range of 1 gram to 15 grams. The weighted retainer mass may be 1 gram, 2 grams, 3 grams, 4 grams, 5 grams, 6 grams, 7 grams, 8 grams, 9 grams, 10 grams, 11 grams, 12 grams, 13 grams, 14 grams, or 15 grams. The weighted retainer volume and shape do not substantially vary. The weighted retainer mass is varied by changing the weighted retainer density. The weighted retainer density may be may be 2.7 gm / cm3, 3.0 gm / cm3, 3.5 gm / cm3, 4.0 gm / cm3, 4.5 gm / cm3, 5.0 gm / cm3, 5.5 gm / cm3, 6.0 gm / cm3, 6.5 gm / cm3, 7.0 gm / cm3, 7.5 gm / cm3, 8.0 gm / cm3, 8.5 gm / cm3, 9.0 gm / cm3, 9.5 gm / cm3, 10.0 gm / cm3, 10.5 gm / cm3, 11.0 gm / cm3, 11.5 gm / cm3, 12.0 gm / cm3, 12.5 gm / cm3, 13.0 gm / cm3, 13.5 gm / cm3, 14.0 gm / cm3, 14.5 gm / cm3, 15.0 gm / cm3, 15.5 gm / cm3, 16.0 gm / cm3, 16.5 gm / cm3, 17.0 gm / cm3, 17.5 gm / cm3, 18.0 gm / cm3, 18.5 gm / cm3, 19.0 gm / cm3, or 19.3 gm / cm3.

[0080] The multi-weight assembly 490 advantageously provides an external appearance similar to that of a conventional toe screw but permits different materials to be used for the primary weight 491 and weighted retainer 470. For example, the primary weight 491 may be formed of a heavier density material to provide course weight adjustment, while the weighted retainer 470 may be formed of a lighter density material to provide fine weight adjustment. Additionally, the primary weight 491 of the multi-weight assembly 490 is mechanically secured in place by the weighted retainer 470, and therefore the primary weight 491 need not be machined to provide its own securement, such as having external threads.Prismatic Primary Weight with Threaded Retainer

[0081] A multi-weight assembly 590 is provided in a socket 580 formed in a golf club head 500. Referring to FIGS. 7A, 7B, and 7C, the multi-weight assembly 590 comprises a primary weight 591 and a weighted retainer 570. In this example, the socket 580 is an oversized socket for receiving a primary weight 591 that is significantly larger than the weighted retainer 570, such that the primary weight 591 is visible from and conforms to the contour of a low to region exterior. The larger volume of the primary weight 591 allows for a wider range of masses that can be added to the low-toe region of the golf club head 500.

[0082] The multi-weight assembly 590 may be removably attached to the golf club head 500 at the socket 580. The socket 580 is located within the low toe region 545 to allow the socket-received multi-weight assembly 590 to beneficially adjust the mass properties of the golf club head 500 by moving the club head CG lower and toeward.

[0083] As best shown in FIGS. 7A and 7C, the socket 580 may have a rectilinear shape formed by a socket rear wall 581, a socket forward wall 582, a socket base surface 584, a socket lower wall 586, and a socket upper wall 587. A socket aperture 583 is formed at the club head exterior surface shaped to follow the contour of the low toe region 545. The socket base surface 584 further comprises a socket base surface threaded recess 588 configured to receive a weighted retainer threaded tip. In the illustrated example, the socket 580 is a blind hole that does not communicate with or intersect the interior void 118.

[0084] The primary weight 591 comprises a primary weight body 599 having a rectilinear cross-sectional shape complementary to the shape of the socket 580. The primary weight body 599 defines a primary weight central passage 598. The primary weight central passage 598 may be unthreaded or threaded. A primary weight exterior surface 596 is shaped to follow a contour of the lower toe portion 545. The primary weight exterior surface 596 is exposed to and comprises part of the golf club head 500 exterior surface. The primary weight central passage 598 comprises a primary weight central passage length. The primary weight 591 comprises a primary weight mass, a primary weight volume, and a primary weight density. The primary weight 591 is removable, and a plurality of interchangeable, similarly shaped primary weights 591 may be provided having different masses. The primary weight volume may be constant, such that the mass of the primary weight 591 can be changed by using a primary weight 591 with a different density. The primary weight 591 has a primary weight mass in a range between 5 grams and 30 grams. The primary weight mas may be 5 grams, 6 grams, 7 grams, 8 grams, 9 grams, 10 grams, 11 grams, 12 grams, 13 grams, 14 grams, 15 grams, 16 grams, 17 grams, 18 grams, 19 grams, 20 grams, 21 grams, 22 grams, 23 grams, 24 grams, 25 grams, 26 grams, 27 grams, 28 grams, 29 grams, 30 grams, 31 grams, 32 grams, 33 grams, 34 grams, 35 grams, or 36 grams. The primary weight central passage 598 may include an exterior surface counterbore 550 having a larger diameter for receiving a fastener head 572.

[0085] The weighted retainer 570 comprises a fastener 569. The fastener 569 comprises a fastener body 568 having a fastener head 572 and a fastener shaft 574. The fastener head 572 comprises a fastener exterior recess and fastener head diameter. The fastener shaft 574 comprises a fastener tip 573 opposite from the fastener head 572. The fastener shaft 574 comprises a fastener shaft length and a fastener shaft diameter smaller than the fastener head diameter. The fastener shaft 574 comprises a fastener shaft external thread along at least part of the fastener shaft length and including the fastener tip 573. The fastener shaft may be entirely threaded to engage a threaded primary weight central passage 598. The fastener shaft length is longer than the central passage. The weighted retainer 570 comprises a weighted retainer volume, a weighted retainer mass, and a weighted retainer density. The weighted retainer 570 is removable, and weighted retainers 570 having different mass may be interchangeable. The weighted retainer mass may be 1 gram, 2 grams, 3 grams, 4 grams, 5 grams, 6 grams, 7 grams, 8 grams, 9 grams, or 10 grams. The weighted retainer volume is constant, such that a change in the weighted retainer mass is accomplished by a change in weighted retainer density. When assembled, the fastener 569 is inserted into the primary weight central passage 598 such that the fastener head 572 is received within the primary weight exterior surface recess 550. The fastener shaft length 578 is longer than the primary weight central passage length 551 such that when the fastener 569 is inserted into the primary weight central passage 598 the fastener tip 573 extends past the primary weight basal surface 597. When assembled, the fastener tip 573 is threadably received within socket base surface threaded recess 588. By means of the weighted retainer 570, the multi-weight assembly 590 mechanically affixes to the golf club head 500 within the socket 580.Tubular Primary Weight with Threaded Retainer

[0086] Referring to FIGS. 8A, 8B, and 8C, a smaller multi-weight assembly 690 is provided in a socket 680 of a golf club head 600. The multi-weight assembly 690 comprises a primary weight 691 and a weighted retainer 670. The primary weight 691 is exposed to the exterior surface of the golf club head 600. Multi-weight assembly 690 has a smaller volume that multi-weight assembly 590 providing a finer control of the adjustable weight.

[0087] The overall profile of the primary weight 691, however, is limited to provide an appearance similar to that of a conventional toe screw and to reduce discontinuities between the exterior of the multi-weight assembly 690 and the surrounding exterior surface of the golf club head 600. The multi-weight assembly 690 may be removably attached to the golf club head 600 at the socket 680. The socket 680 may be a blind hole that does not communicate with or intersect the interior void 118. The socket 680 is located within the low toc region 645 to allow the socket-received multi-weight assembly 690 to beneficially adjust the mass properties of the golf club head 600.

[0088] As best shown in FIGS. 8A and 8C, the socket 680 comprises a socket base surface 684, a socket side wall 681, and a socket aperture 683 formed at the club head exterior surface. The socket base surface 684 further comprises a threaded recess 688. In the illustrated example, the socket 680 comprises a cylindrical shape.

[0089] The primary weight 691 comprises a primary weight body 699 having a cylindrical cross-sectional shape complementary to the socket shape. The primary weight body 699 defines a primary weight central passage 698. The primary weight central passage 698 may be partially or completely threaded. The primary weight 691 is disposed in the socket 680 with a primary weight exterior surface 696 occupying and the socket aperture 683 and shaped to follow a contour of the lower toe portion 645, such that the primary weight exterior surface 696 is exposed to and comprises part of the exterior surface of the golf club head 600. The primary weight 691 includes a base surface 697 opposite the primary weight exterior surface 696. The primary weight central passage 698 comprises a primary weight central passage length, a primary weight mass, a primary weight volume, a primary weight wall thickness (measured perpendicularly from the primary weight central passage 698 and a primary weight lateral surface), and a primary weight density. The primary weight thickness is in a range of 0.1 inch and 0.25 inch. The primary weight mass is in a range between 1 gram and 10 grams. The primary weight passage 698 may be threaded. The primary weight 691 is removable, and primary weights 691 having different masses may be used with the socket 680 to change the mass properties of the golf club head 600.

[0090] The primary weight thickness is in a range of 0.10 inch and 0.25 inch. The primary weight thickness may be 0.10 inch, 0.15 inch, 0.20 inch, or 0.25 inch. The primary weight mass is in a range between 1 gram and 10 grams. The primary weight mass may be 1 gram, 2 grams, 3 grams, 4 grams, 5 grams, 6 grams, 7 grams, 8 grams, 9 grams, or 10 grams.

[0091] The weighted retainer 670 comprises a fastener 669 for securing the primary weight 691 within the socket 680. The fastener 669 comprises a fastener body 668, a fastener head 672, and a fastener shaft 674. The fastener head 672 comprises a fastener exterior recess 671 and fastener head diameter. The fastener shaft 674 comprises a fastener tip 673 opposite the fastener head 672. The fastener shaft 674 comprises a fastener shaft length and a fastener shaft diameter smaller than the fastener head diameter. At least the tip 673 of the fastener shaft 674 comprises an external thread 675 configured to threadably engage the threaded recess 688 of the socket 680. The entire fastener shaft 674 may be threaded. The weighted retainer 670 comprises a weighted retainer volume, a weighted retainer mass, and a weighted retainer density. The weighted retainer 670 is removable from the socket 680 and the primary weight 691, so that weighted retainers 670 having different masses may be used. For example, weighted retainers formed of materials having different densities may be used to change the mass of the weighted retainer 670. Weighted retainers may formed from materials having a density of 2.7 gm / cm3, 3.0 gm / cm3, 3.5 gm / cm3, 4.0 gm / cm3, 4.5 gm / cm3, 5.0 gm / cm3, 5.5 gm / cm3, 6.0 gm / cm3, 6.5 gm / cm3, 7.0 gm / cm3, 7.5 gm / cm3, 8.0 gm / cm3, 8.5 gm / cm3, 9.0 gm / cm3, 9.5 gm / cm3, 10.0 gm / cm3, 10.5 gm / cm3, 11.0 gm / cm3, 11.5 gm / cm3, 12.0 gm / cm3, 12.5 gm / cm3, 13.0 gm / cm3, 13.5 gm / cm3, 14.0 gm / cm3, 14.5 gm / cm3, 15.0 gm / cm3, 15.5 gm / cm3, 16.0 gm / cm3, 16.5 gm / cm3, 17.0 gm / cm3, 17.5 gm / cm3, 18.0 gm / cm3, 18.5 gm / cm3, 19.0 gm / cm3, or 19.3 gm / cm3.

[0092] When assembled, the fastener 669 is inserted into the primary weight central passage 698 such that the fastener head 672 is received within the counterbore 650. The fastener shaft length 678 is larger than the primary weight central passage length 651 such that, when the fastener 669 is inserted through the primary weight central passage 698, the fastener tip 673 extends past the primary weight base surface 697. When assembled, the fastener tip 673 is threadably received within the threaded recess 688. The primary weight central passage 698 comprises a counterbore 650 sized to receive the head 672 of the fastener 669, so that multi-weight assembly 690 is flush with the exterior surface of the golf club head 600. The multi-weight assembly 690 mechanically affixes to the golf club head 600 within the socket 680 by means of the weighted retainer 670.Threaded Retainer with Weighted Core

[0093] Multi-weight assembly 790 reduces the complexity of the system by reducing the number of needed components. Referring to FIGS. 9A and 9B, a multi-weight assembly 790 is coupled to a socket 780 formed in a golf club head 700. As best shown at FIG. 9A, the multi-weight assembly 790 comprises a primary weight 791 and a weighted retainer 770 that are integrated into a single component 792 that can be inserted into the socket 780. For example, the primary weight 791 comprises a core of the single component 792, while the weighted retainer 770 comprises an exterior of the single component 792. The multi-weight assembly 790 may be removably attached to the golf club head 700 at the socket 780. The socket 780 may be a blind hole that does not communicate with or intersect the interior void 118. The socket 780 is located within the low toc region 745 of the golf club head 700, so that the multi-weight assembly 790 advantageously adjusts the mass properties of the golf club head 700 to move the club head CG lower and toeward.

[0094] As best shown at FIG. 9A, the socket 780 may include a socket side wall 781 extending from a socket aperture 782, at the exterior of the golf club head 700, to a socket base surface 783 internal to the golf club head 700. The socket side wall 781 may include internal threads 784. The socket aperture 783 comprises a socket aperture area.

[0095] As noted above, the weighted retainer 770 surrounds and is integrated with the primary weight 791. External threads 779 are formed in the weighted retainer 770 to threadably engage the internal threads 784 of the socket 780. The primary weight 791 forms a core within the weighted retainer 770. The weighted retainer 770 and the primary weight 791 may be formed of different materials. For example, the primary weight 791 may be formed of tungsten, while the weighted retainer 770 is formed of a different material that is more easily machined. The different materials of the primary weight 791 and the weighted retainer 770 may have different densities to provide greater variance in the amount of mass provided by the multi-weight assembly 790. The weighted retainer material may have a density of 2.7 gm / cm3, 3.0 gm / cm3, 3.5 gm / cm3, 4.0 gm / cm3, 4.5 gm / cm3, 5.0 gm / cm3, 5.5 gm / cm3, 6.0 gm / cm3, 6.5 gm / cm3, 7.0 gm / cm3, 7.5 gm / cm3, 8.0 gm / cm3, 8.5 gm / cm3, 9.0 gm / cm3, 9.5 gm / cm3, 10.0 gm / cm3, 10.5 gm / cm3, 11.0 gm / cm3, 11.5 gm / cm3, 12.0 gm / cm3, 12.5 gm / cm3, 13.0 gm / cm3, 13.5 gm / cm3, 14.0 gm / cm3, 14.5 gm / cm3, 15.0 gm / cm3, 15.5 gm / cm3, 16.0 gm / cm3, 16.5 gm / cm3, 17.0 gm / cm3, 17.5 gm / cm3, 18.0 gm / cm3, 18.5 gm / cm3, 19.0 gm / cm3, or 19.3 gm / cm3.

[0096] The primary weight 791 and weighted retainer 770 may form portions of the single component 792 other than as shown. For example, a head portion of the single component 792 may provide the primary weight 791, while a tip portion of the single component 792 may provide the weighted retainer 770. Still further, the different materials may be intermixed, allowing the screw head average density to be varied by altering the proportion of the first material and the second material. The thickness of the first material outer cladding may be altered while holding the threaded screw volume constant to alter the average density and mass of the threaded screw.Two-Component Primary Weight with Threaded Retainer

[0097] Referring to FIGS. 10A and 10B, a multi-weight assembly 890 is provided in a socket 880 formed in a golf club head 800. The multi-weight assembly 890 comprises a primary weight 891 and a weighted retainer 870 that are permanently affixed to the golf club head 800, and a toe weight 850 that is removably coupled to the primary weight 891 and the weighted retainer 870. The primary weight 891 is disposed in the socket 880, and the weighted retainer 870 extends over the primary weight 891 and is coupled to the golf club head 800. The primary weight 891 may be press fit, swedged, or adhesively attached within the socket 880. The weighted retainer 870 may be swedged, adhesively attached, or welded over the primary weight 891 and over the socket 880 opening such that weighted retainer conforms to the contour of the lower toe region 845. Both the primary weight 891 and the weighted retainer 870 comprise aligned, threaded bore holes configured to receive the threaded toc weight 850. The socket 880 may be a blind hole that does not communicate with or intersect the interior void. The socket 880 is located within the low toe region 845 to allow the socket-received multi-weight assembly 890 to beneficially adjust the mass properties of the golf club head 800 to move the club head CG lower and more toeward.

[0098] The socket 880 comprises a socket rear wall 881, a socket forward wall 882, a socket base surface 884, and a socket upper wall 887. A socket aperture 883 traverses around an exterior surface of the low-toe region 845.

[0099] The primary weight 891 comprises a primary weight body 899 having a shape complementary to that of the socket 880. The primary weight 891 is disposed in socket 880 proximate to and in contact with the socket rear wall 881, the socket forward wall 882, the socket base surface 884, and the socket upper wall 887. A primary weight outward surface 896 has a contour that generally follows that of an exterior of the lower toe portion 845 but is inwardly offset by a distance to accommodate the weighted retainer 870. The primary weight 891 comprises a primary weight mass, a primary weight volume, and a primary weight material density. The primary weight volume is constant, such that a change in the primary weight mass is accomplished by a change in primary weight density.

[0100] The weighted retainer 870 is disposed in the socket 880 and extends over the primary weight 891. An interior surface 873 of the weighted retainer 870 engages the primary weight outward surface 896, thereby restricting movement of the primary weight 891 within the socket 880. The weighted retainer 870 further has an exterior surface 875 having a contour that generally follows that of the exterior of the lower toc portion 845, thereby reducing discontinuities between the multi-weight assembly 890 and the surrounding exterior surface of the golf club head 800. The weighted retainer 870 is coupled to the golf club head 800, such as by welding, to secure the primary weight 891 within the socket 880. The primary weight 891 and the weighted retainer 870 may be formed of the same material. Alternatively, the primary weight 891 and the weighted retainer 870 may be formed of different materials. For example, the primary weight 891 may be formed of a first material selected primarily for weighting purposes, while the weighted retainer 870 may be formed of a second material selected to facilitate coupling to the golf club head, such as by welding or machining. Both the primary weight 891 and weighted retainer 870 may have a material density of 2.7 gm / cm3, 3.0 gm / cm3, 3.5 gm / cm3, 4.0 gm / cm3, 4.5 gm / cm3, 5.0 gm / cm3, 5.5 gm / cm3, 6.0 gm / cm3, 6.5 gm / cm3, 7.0 gm / cm3, 7.5 gm / cm3, 8.0 gm / cm3, 8.5 gm / cm3, 9.0 gm / cm3, 9.5 gm / cm3, 10.0 gm / cm3, 10.5 gm / cm3, 11.0 gm / cm3, 11.5 gm / cm3, 12.0 gm / cm3, 12.5 gm / cm3, 13.0 gm / cm3, 13.5 gm / cm3, 14.0 gm / cm3, 14.5 gm / cm3, 15.0 gm / cm3, 15.5 gm / cm3, 16.0 gm / cm3, 16.5 gm / cm3, 17.0 gm / cm3, 17.5 gm / cm3, 18.0 gm / cm3, 18.5 gm / cm3, 19.0 gm / cm3, or 19.3 gm / cm3.

[0101] The multi-weight assembly 890 further includes a second socket 892 for receiving the toc weight 850, as best shown in FIG. 10B. The second socket 892 are aligned bores that extend entirely through the weighted retainer 870 and at least partially through the primary weight 891. In the illustrated example, the second socket 892 includes internal threads 893 for threadably engaging the toc weight 850. Accordingly, the multi-weight assembly 890 allows for a greater amount of mass to be located in the toe region 845 while still allowing swing weighting through the use of the toe weight 850.Toe Weight Assembly with Additional Club Head Weights

[0102] The multi-weight assembly 990 may work in cooperation with other club head weights. FIGS. 11A and 11B illustrate a multi-weight assembly 990 for a golf club head 900. The golf club head 900 defines an interior void 902 and a low-toe region 945. A socket 980 is formed in the low-toe region 945, and receives the multi-weight assembly 990, which may be any of the multi-weight assemblies disclosed above. Additionally, a body weight 930 is disposed in the interior void 902, and is formed of a body weight material having a body weight material density greater than the club head material density. As illustrated, the body weight 930 is coupled to the rear and sole of the golf club head 900. Additionally, a tip or stick weight 935 may be provided in a hosel 940 of the golf club head 900. The additional body weight 930 lowers the CG of the golf club head, thereby improving performance characteristics.Toe Weight Assembly with Additional Club Head Weights

[0103] FIGS. 12A and 12B illustrate a multi-weight assembly 1090 for a golf club head 1000. The golf club head 1000 defines an interior void 1002 and a low-toe region 1045. A socket 1080 is formed in the low-toe region 1045, and receives the multi-weight assembly 1090, which may be any of the multi-weight assemblies disclosed above. Additionally, a body weight 1030 is disposed in the interior void 1002, and is formed of a body weight material having a body weight material density greater than the club head material density. Alternately, the interior void may be divided into a central void and a toeward void separated by an interior wall, with the body weight 1030 penetrating the interior wall such that a toeward body weight portion intrudes into the more toeward void.

[0104] As illustrated, the body weight 1030 is coupled to the low-toe region 1045 of the golf club head 1000. The socket 1080 communicates with the interior void 1002 adjacent to the location of the body weight 1030, to permit the multi-weight assembly 1090 to engage a surface of the body weight 1030. For example, as shown in FIG. 12A, the multi-weight assembly 1090 engages an upper surface 1031 of the body weight 1030. In other examples, the multi-weight assembly 1090 engages a different portion of the body weight 1030. Additionally, a tip or stick weight 1035 may be provided in a hosel 1040 of the golf club head 1000. The body weight 1030 lowers the CG of the golf club head, while the interaction of the multi-weight assembly 1090 with the body weight 1030 helps secure the body weight 1030 in place.Weight Assembly and Toe Port

[0105] FIG. 13 illustrates a multi-weight assembly 1190 for a golf club head 1100. The golf club head 1100 defines an interior void 1102 and a low-toe region 1145. A socket 1180 is formed in the low-toe region 1145, and receives the multi-weight assembly 1190, which may be any of the multi-weight assemblies disclosed above. The socket 1180 is imperforate and does not extend to or otherwise communicate with the interior void 1102. Additionally, port 1120 extends through the toe portion of the golf club head 1100 from an exterior surface to the interior void 1102. Port 1120 permits access to the interior void 1102 entirely separately from the socket 1180 and multi-weight assembly 1190.EXAMPLE 1

[0106] In each embodiment of the multi-weight assembly discussed above, the primary weight may vary in mass by changing the material density, but not changing the primary weight volume. Referring to the golf club head 500 with multi-weight assembly 590 as illustrated FIGS. 7A-7C, the primary weight 591 may vary in mass by changing the material density, but not changing the primary weight volume. The multi-weight assembly 590 comprises a primary weight 591 and a weighted retainer 570. The socket 580 is an oversized socket for receiving a primary weight 591 that is significantly larger than the weighted retainer 570, such that the primary weight 591 is visible from and conforms to the contour of a low toe region exterior. The volume of the primary weight 591 is at least 25% of the low toe region volume. The larger volume of the primary weight 591 allows for a wider range of masses that can be added to the low-toe region of the golf club head 500. The primary weight mass is in a range between 5 grams to 36 grams. The mass of the rest of the club head 500 was fixed and the mass of the weighted retainer 570 was also fixed. Then, different primary weights 591 having increasing density were added to the golf club head 500 and the total moment of inertia was measured. Table 1, below, illustrates the effect of this primary weight density variation.TABLE 1Mass ofTotal ClubTotal MOIInsert (g)Head Mass (g)(g-cm2)5.30232.796015.29242.7101115.68243.1101317.64245.1105719.60247103221.56249104123.53251105025.48252.9105927.44254.9106829.40257107731.36258.8108533.33260.8109435.28262.71102

[0107] As the mass of the insert is increased from the lowest density to the highest density, the total moment of inertia of the golf club head increased by 142 g-cm2. This is an increase of almost 15% in the total club head moment of inertia from the lowest density primary weight to the highest density primary weight. Such a significant change in mass properties allows the designer to carefully tune the performance of each club head.EXAMPLE 2

[0108] Referring to the golf club head 800 with multi-weight assembly 890 as illustrated FIGS. 10A and 10B, the primary weight 891 may vary in mass by changing the material density, but not changing the primary weight volume. The multi-weight assembly 890 comprises a primary weight 891 and a weighted retainer 870 that are permanently affixed to the golf club head 800, and a toe weight 850 that is removably coupled to the primary weight 891 and the weighted retainer 870. The primary weight 891 is disposed in the socket 880, and the weighted retainer 870 extends over the primary weight 891 and is coupled to the golf club head 800. The primary weight 891 and the weighted retainer 870 may be formed of the same material. Alternatively, the primary weight 891 and the weighted retainer 870 may be formed of different materials. For example, the primary weight 891 may be formed of a first material selected primarily for weighting purposes, while the weighted retainer 870 may be formed of a second material selected to facilitate coupling to the golf club head, such as by welding or machining. The primary weight mass is in a range between 5 grams to 36 grams. The mass of the rest of the club head 500 was fixed and the mass of the weighted retainer 570 was also fixed. Then, different primary weights 891 having increasing density were added to the golf club head 800 and the total moment of inertia was measured. Table 2, below, illustrates the effect of this primary weight density variation.TABLE 2Mass ofTotal ClubTotal MOIInsert (g)Head Mass (g)(g-cm2)4.8233.796713.8242.8101114.2243.1101315.9244.9102117.7246.7103019.5248.4103821.3250.2104623.0252.0105524.8253.7106126.6255.5106928.3257.3107730.1259.1108431.9260.81092

[0109] As the mass of the insert is increased from the lowest density to the highest density, the total moment of inertia of the golf club head increased by 125 g-cm2. This is an increase of almost 13% in the total club head moment of inertia from the lowest density primary weight to the highest density primary weight. Such a significant change in mass properties allows the designer to carefully tune the performance of each club head.CLAUSES

[0110] Clause 1. A golf club head, comprising a top rail, a sole opposite the top rail, a heel, a toe opposite the heel, a rear, and a front opposite the rear and comprising a strike face having a geometric center, wherein the top rail, sole, heel, toe, rear, and front cooperate to define an interior void; a center of gravity (CG); an x axis extending horizontally through the geometric center in a heel-to-toe direction and parallel to a ground plane when the golf club head is at an address position, a y axis extending vertically through the geometric center in a top rail to sole direction and perpendicular to the x axis, a z axis extending in a front to rear direction orthogonal to both the x axis and the y axis, an xy plane extending along the x axis and the y axis, a yz plane extending along the y axis and the z axis, and an xz plane extending along the x axis and the z axis; a loft plane tangent to the geometric center defining a loft angle between the loft plane and the ground plane; score lines formed in the strike face and extending to a score-line area toe boundary plane, which is parallel to the yz plane and intersects a toeward-most end of the score lines, wherein the score-line area toe boundary plane demarcates the toe from a remainder of the club head; wherein the toe comprises a toe face height measured along the score-line area toe boundary plane from a toe-sole point to a toe-top rail point; a low-toe boundary plane parallel to the xz plane and intersecting the score-line area toe boundary plane at a point that is 60 cc of the toe face height above the toe-sole point; and a target low-toe region below a low-toe boundary plane; a socket located in the low-toe region and comprising a socket aperture formed at an exterior surface of the club; a socket base surface located inside the toc; a socket side wall extending from the socket aperture to the socket base surface, wherein the socket side wall and the socket base surface are imperforate so that the socket does not fluidly communicate with the interior void; a socket axis extending through a geometric center of the socket side wall; a socket length measured along the socket axis from the aperture to the base surface; and a socket volume enclosed by the socket side wall from the aperture to the base surface; a multi-weight assembly associated with the socket and comprising a primary weight sized for insertion into the socket, wherein the primary weight comprises a primary weight material having a primary weight material density; and a weighted retainer for securing the primary weight within the socket, wherein the weighted retainer comprises a weighted retainer material having a weighted retainer material density different from the primary weight material density.

[0111] Clause 2. The golf club head of clause 1, wherein the socket side wall comprises internal threads, and wherein the weighted retainer comprises an exterior portion of the primary weight formed with external threads.

[0112] Clause 3. The golf club head of clause 1, wherein the base surface comprises a threaded recess; the primary weight comprises a central passage; the weighted retainer comprises a fastener sized for insertion through the central passage of the primary weight, wherein a tip of the fastener comprises external threads for threadably engaging the threaded recess in the base surface.

[0113] Clause 4. The golf club head of clause 3, wherein the primary weight comprises an annular shape surrounding the central passage.

[0114] Clause 5. The golf club head of clause 3, wherein the primary weight comprises a frustoconical shape surrounding the central passage.

[0115] Clause 6. The golf club head of clause 3, further comprising VHB tape disposed between the primary weight and the base surface.

[0116] Clause 7. The golf club head of clause 3, wherein the fastener comprises a weighted toe screw.

[0117] Clause 8. The golf club head of clause 1, wherein the primary weight is sized to mechanically engage the socket side wall.

[0118] Clause 9. The golf club head of clause 8, wherein the weighted retainer comprises a cap sized for insertion into the socket, the cap comprising a cap head extending across the aperture of the socket, wherein an exterior surface of the cap head is shaped to follow a contour of the toe.

[0119] Clause 10. The golf club head of clause 1, wherein the weighted retainer comprises epoxy disposed between the primary weight and the socket.

[0120] Clause 11. The golf club head of clause 1, wherein the socket side wall comprises internal threads; and the weighted retainer comprises a hollow fastener, the hollow fastener comprising a fastener body sized for insertion into the socket and having a fastener side wall extending from a fastener head to a fastener bottom rim; a fastener interior cavity extending from the fastener bottom rim toward the fastener head, wherein the fastener interior cavity is sized to receive the primary weight; and a fastener exterior side wall comprises external threads for threadably engaging the internal threads of the socket side wall.

[0121] Clause 12. The golf club head of clause 1, wherein the base surface comprises a threaded recess; the socket comprises a rectilinear cross-sectional shape; the primary weight comprises a primary weight body having a rectilinear cross-sectional shape complementary to the socket shape, the primary weight body defining a central passage; and a primary weight head disposed at the aperture of the socket, wherein an exterior surface of the primary weight head is shaped to follow a contour of the toe; the weighted retainer comprises a fastener sized for insertion through the central passage of the primary weight, wherein a tip of the fastener comprises external threads for threadably engaging the threaded recess in the base surface.

[0122] Clause 13. The golf club head of clause 1, wherein the primary weight is disposed in the socket proximate the base surface; the weighted retainer comprises a cap weight disposed in the socket proximate an aperture perimeter and extending over the primary weight, the cap weight being formed of a cap weight material having a cap weight material density different from the primary weight material density, and the cap weight is welded to the toe; a second socket is formed entirely through the cap weight and at least partially through the primary weight; and a toe weight is disposed in the second socket and coupled to the primary weight and the cap weight.

[0123] Clause 14. The golf club head of clause 13, wherein the second socket comprises internal threads; and the toe weight comprises external threads that threadably engage the internal threads.

[0124] Clause 15. The golf club head of clause 1, further comprising a port separate from the socket and extending from an exterior surface of the club head to the interior void of the club head.

[0125] Clause 16. The golf club head of clause 1, wherein the interior void of the club head comprises a fully enclosed cavity.

[0126] Clause 17. The golf club head of clause 1, further comprising a body weight disposed in the interior void, wherein the top rail, sole, heel, toe, rear and front are formed of a club head material having a club head material density; and the body weight comprises a body weight material having a body weight material density greater than the club head material density.

[0127] Clause 18. The golf club head of clause 17, wherein the body weight is coupled to the rear or sole.

[0128] Clause 19. The golf club head of clause 17, wherein the body weight is coupled to the toe.

[0129] Clause 20. The golf club head of clause 19, wherein at least one of the primary weight and the weighted retainer engages the body weight.

[0130] Clause 21. The golf club head of clause 1, wherein the primary weight material comprises tungsten.

[0131] Clause 22. The golf club head of clause 1, wherein the primary weight comprises a primary weight mass of 5.0 to 50.0 grams.

[0132] Clause 23. The golf club head of clause 1, wherein a CG height is a distance measured perpendicular from the ground plane to the CG, parallel to the y-axis.

[0133] Clause 24. The golf club head of clause 1, wherein a CG depth is the distance measured from the xy-plane to the CG parallel to the z-axis.

[0134] Clause 25. The golf club head of clause 1, wherein the primary weight comprises a first primary weight piece formed of the primary weight material, and a second primary weight piece formed of a second primary weight material having a second primary weight material density.

[0135] Clause 26. The golf club head of clause 25, wherein the second primary weight material density is different from the primary weight material density.

Claims

1. A golf club head, comprising:a top rail, a sole opposite the top rail, a heel, a toe opposite the heel, a rear, and a front opposite the rear and comprising a strike face having a geometric center, wherein the top rail, sole, heel, toe, rear, and front cooperate to define an interior void;a center of gravity (CG);an x axis extending horizontally through the geometric center in a heel-to-toe direction and parallel to a ground plane when the golf club head is at an address position, a y axis extending vertically through the geometric center in a top rail to sole direction and perpendicular to the x axis, a z axis extending in a front to rear direction orthogonal to both the x axis and the y axis, an xy plane extending along the x axis and the y axis, a yz plane extending along the y axis and the z axis, and an xz plane extending along the x axis and the z axis;a loft plane tangent to the geometric center defining a loft angle between the loft plane and the ground plane;score lines formed in the strike face and extending to a score-line area toe boundary plane, which is parallel to the yz plane and intersects a toeward-most end of the score lines, wherein the score-line area toe boundary plane demarcates the toe from a remainder of the club head;wherein the toe comprises:a toe face height measured along the score-line area toe boundary plane from a toe-sole point to a toe-top rail point;a low-toe boundary plane parallel to the xz plane and intersecting the score-line area toe boundary plane at a point that is 60 cc of the toe face height above the toe-sole point; anda target low-toe region below a low-toe boundary plane;a socket located in the low-toe region and comprising:a socket aperture formed at an exterior surface of the club;a socket base surface located inside the toe;a socket side wall extending from the socket aperture to the socket base surface, wherein the socket side wall and the socket base surface are imperforate so that the socket does not fluidly communicate with the interior void;a socket axis extending through a geometric center of the socket side wall;a socket length measured along the socket axis from the aperture to the base surface; anda socket volume enclosed by the socket side wall from the aperture to the base surface;a multi-weight assembly associated with the socket and comprising:a primary weight sized for insertion into the socket, wherein the primary weight comprises a primary weight material having a primary weight material density; anda weighted retainer for securing the primary weight within the socket, wherein the weighted retainer comprises a weighted retainer material having a weighted retainer material density different from the primary weight material density.

2. The golf club head of claim 1, wherein the socket side wall comprises internal threads, and wherein the weighted retainer comprises an exterior portion of the primary weight formed with external threads.

3. The golf club head of claim 1, wherein:the base surface comprises a threaded recess;the primary weight comprises a central passage; andthe weighted retainer comprises a fastener sized for insertion through the central passage of the primary weight, wherein a tip of the fastener comprises external threads for threadably engaging the threaded recess in the base surface.

4. The golf club head of claim 3, wherein the primary weight comprises an annular shape surrounding the central passage.

5. The golf club head of claim 3, wherein the primary weight comprises a frustoconical shape surrounding the central passage.

6. The golf club head of claim 3, further comprising VHB tape disposed between the primary weight and the base surface.

7. The golf club head of claim 3, wherein the fastener comprises a weighted toe screw.

8. The golf club head of claim 1, wherein the primary weight is sized to mechanically engage the socket side wall.

9. The golf club head of claim 8, wherein the weighted retainer comprises a cap sized for insertion into the socket, the cap comprising a cap head extending across the aperture of the socket, wherein an exterior surface of the cap head is shaped to follow a contour of the toe.

10. The golf club head of claim 1, wherein the weighted retainer comprises epoxy disposed between the primary weight and the socket.

11. The golf club head of claim 1, wherein:the socket side wall comprises internal threads; andthe weighted retainer comprises a hollow fastener, the hollow fastener comprisinga fastener body sized for insertion into the socket and having a fastener side wall extending from a fastener head to a fastener bottom rim;a fastener interior cavity extending from the fastener bottom rim toward the fastener head, wherein the fastener interior cavity is sized to receive the primary weight; anda fastener exterior side wall comprises external threads for threadably engaging the internal threads of the socket side wall.

12. The golf club head of claim 1, wherein:the base surface comprises a threaded recess;the socket comprises a rectilinear cross-sectional shape;the primary weight comprises:a primary weight body having a rectilinear cross-sectional shape complementary to the socket shape, the primary weight body defining a central passage; anda primary weight head disposed at the aperture of the socket, wherein an exterior surface of the primary weight head is shaped to follow a contour of the toe; andthe weighted retainer comprises a fastener sized for insertion through the central passage of the primary weight, wherein a tip of the fastener comprises external threads for threadably engaging the threaded recess in the base surface.

13. The golf club head of claim 1, wherein:the primary weight is disposed in the socket proximate the base surface;the weighted retainer comprises a cap weight disposed in the socket proximate an aperture perimeter and extending over the primary weight, the cap weight being formed of a cap weight material having a cap weight material density different from the primary weight material density, and the cap weight is welded to the toe;a second socket is formed entirely through the cap weight and at least partially through the primary weight; anda toe weight is disposed in the second socket and coupled to the primary weight and the cap weight.

14. The golf club head of claim 13, wherein:the second socket comprises internal threads; andthe toe weight comprises external threads that threadably engage the internal threads.

15. The golf club head of claim 1, further comprising a port separate from the socket and extending from an exterior surface of the club head to the interior void of the club head.

16. The golf club head of claim 1, wherein the interior void of the club head comprises a fully enclosed cavity.

17. The golf club head of claim 1, further comprising a body weight disposed in the interior void, wherein:the top rail, sole, heel, toe, rear and front are formed of a club head material having a club head material density; andthe body weight comprises a body weight material having a body weight material density greater than the club head material density.

18. The golf club head of claim 17, wherein the body weight is coupled to the rear or sole.

19. The golf club head of claim 17, wherein the body weight is coupled to the toe.

20. The golf club head of claim 19, wherein at least one of the primary weight and the weighted retainer engages the body weight.

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