Abstract: A correlated set of golf club heads comprises a first and second golf club head. Each club head has a striking face, a rear surface, a top portion, a sole portion, a toe portion, a heel portion, and a loft. The striking face has a first plurality of scorelines defining a scoreline heel-ward extent and a scoreline toe-ward extent. The plurality of scorelines comprises a scoreline length LS1 being the lateral distance between the heel-ward extent and the toe-ward extent. The loft of the second golf club head is greater than that of the first golf club head. The scoreline length LS2 of the second golf club head differs from that of the first scoreline length LS1.

Abstract: A ball striking device, such as an iron-type golf club head, includes a face having a ball striking surface and a rear surface, and a body connected to the face. The body has a sole member and a rear cavity defined at least partially by the sole member and the rear surface of the face. The body has an elongated, recessed channel extending within the cavity along a juncture line between the rear surface of the face and the sole member. Additionally, the head is formed in part by a face member having a first leg forming at least a major portion of the face and a second leg extending rearwardly from a bottom end of the first leg and forming at least a portion of the sole member. The head may further be formed by a body member connected to the face member.

Abstract: A damper is provided within the cavity of a golf club head and spans substantially the full length of the striking face from heel-to-toe of the golf club head. One or more cutouts and/or other relief is provided in the damper to reduce the surface area of the damper that contacts the rear surface of the striking face. By reducing the surface area that the damper contacts the rear surface of the striking face, the full length damper improves the sound and feel of the golf club head at impact and only minimally reduces performance of the golf club head. For example, the one or more cutouts and/or other relief maintains face flexibility, characteristic time (CT) and coefficient of restitution (COR) of the striking face.

Abstract: A golf club and golf club head having a high static loft angle, low forward center of gravity, and enhanced z-axis gear effect via a large roll radius and/or tightly controlled moment of inertia about the CG x-axis, Ixx, associated with upward and downward twisting of the club head.

Abstract: A golf club may include a head having a body and a faceplate coupled to the body. The faceplate may have a maximum thickness at a central location and a cross-section intersecting the central location. The cross-section may have continuously variable wall thickness across the faceplate. The faceplate may have a closed non-convex contour curve defined by constant faceplate wall thickness that encloses the central location.

Abstract: A tensile strength training device having a handheld housing with a curved electronic display panel defining a housing channel and with a left side panel and a right side panel each flanking and coupled to the curved electronic display panel, each with a sidewall defining a concave cavity, two opposing handle apertures, and two opposing bracket apertures. Left and right U-shaped handle brackets are disposed within the respective two opposing bracket apertures and coupled to a handle member disposed within the concave cavity thereon for grasping by a user and disposed within the two opposing handle apertures. The device includes a printed circuit board electrically coupled to a power source, a force sensor operably coupled to the left and right U-shaped handle brackets, and operably configured to measure a tensile force applied thereto that is able to be displayed around at least 180° of the curved electronic display panel.

Abstract: An object is to provide an iron golf club head that has high drainage performance and facilitates application of backspin also in a wet state. In an iron golf club head including a plurality of scorelines in a face surface, a microgroove including at least an inclined groove is included between the scorelines, the microgroove extending in a heel leading edge-toe top edge direction to be connected to an upper scoreline.

Abstract: A golf club head having a milled planar strike face formed of oxidizable metal material and a plurality of primary grooves, and a first oxidation-prevention coating permanently covering at least a portion of the body. The primary grooves have toeward ends that may be unaligned vertically. A temporary user-removable cover may cover at least a portion of the oxidizable strike face surface area and obscure the view of at least a portion of the plurality of primary grooves, and may incorporate an opening to display a portion of the face and a portion of the plurality of primary grooves, a non-stick tab coupled to a periphery of the temporary user-removable cover, and/or an external layer of plastic-based shrink wrap. The temporary user-removable cover may be adhesively attached to the face to seal an underlying area from environmental exposure and inhibit oxidation.

Abstract: The invention provides golf clubs and methods of making golf clubs with machined perimeter faces. The club faces provide an accurate ball striking surface and improved aerodynamics. In particular, a surface is milled into the club face that expands over an edge of a ball striking surface and onto a portion of the face adjacent to at least one of a crown, a sole, a toe, or a heel. During a swing, the milled surface causes the boundary layer of airflow to separate at a point closer to the rear of the club head, resulting in reduced drag.

Abstract: Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a body portion with a toe portion, a heel portion, a top portion, a sole portion, a back portion, and a front portion having a face portion with a face portion thickness extending between a front surface and a back surface. The body portion may be associated with a body portion volume. The golf club head may also include an interior cavity. The interior cavity may include an elastic polymer material. Other examples and embodiments may be described and claimed.

Abstract: Disclosed herein are embodiments of iron-type golf club heads that comprise weight reducing features in the topline region of the club head that facilitate changing the Z-up location of the club head. In some exemplary embodiments, the body comprises a weight reducing feature in a topline weight reduction zone of the club head that extends over the entire face length from the par line to the toe portion ending at approximately the Z-up location of the iron type golf club head. The weight reducing feature results in a mass savings of about 2 g to about 20 g, and a Zup shift of about 0.5 mm to about 2.0 mm.

Abstract: Disclosed herein is a casting cluster for casting a body of a golf club head made of titanium or a titanium alloy. The casting cluster comprises a receptor and a plurality of runners coupled to the receptor and configured to receive molten metal from the receptor. The casting cluster also includes at least forty main gates. At least two of the main gates are coupled to each of the runners and each main gate is configured to receive molten metal from a corresponding one of the plurality of runners. The casting cluster further comprises at least forty molds. Each mold of the at least forty molds is configured to receive molten metal from a corresponding one of the main gates and to cast a body of an iron-type golf club head.

Abstract: Embodiments of golf club heads and methods to manufacture golf club heads may include a golf club head having a body portion, a first mass portion, a face portion coupled to the front portion of the body portion to close the interior cavity of the body portion, a second mass portion coupled to a back wall portion below a horizontal midplane of the body portion, a port at or proximate to a horizontal midplane of the body portion and connected to the interior cavity, and a polymer material injected in the interior cavity from the port. The first mass portion may be made from a material having a greater density than the polymer material, the second mass portion may be made from a material having a greater density than a material of the body portion, and a total mass of the second mass portion may be greater than or equal to three times a total mass of the first mass portion. Other examples and embodiments may be described and claimed.

Abstract: A head of a golf club that comprises a ball striking face. The ball striking face has a top ridge, a leading edge, a heel edge, and a toe edge. The top ridge has a first base length and the leading edge has a second base length that is less than the first base length. The heel edge extends from the top ridge to the leading edge and slants at a first angle, relative to the top ridge, towards the toe edge. The toe edge extends from the top ridge to the leading edge and slants at a second angle, relative to the top ridge, towards the heel edge. The leading edge is arcuate and defines a leading edge radius of curvature.

Abstract: A golf club head including a club head body including a back portion and a striking face, wherein the striking face comprises a front surface configured to strike a golf ball and a rear surface opposite the front surface, wherein the back portion is spaced from the rear surface, a first deformable member residing between the back portion and the rear surface of the striking face, wherein the first deformable member comprises a front surface in contact with the rear surface of the striking face, and a second deformable member residing between the back portion and the rear surface of the striking face, wherein the second deformable member comprises a front surface in contact with the rear surface of the striking face, wherein the first deformable member has a greater Shore A durometer than the second deformable member.

Abstract: The present disclosure is a golf club set constituted by a plurality of golf clubs having different loft angles, each of the golf clubs has a shaft and a golf club head, and each of the golf club heads has a crown part, a face part, a sole part, and a hosel part to which the shaft is attached.

Abstract: Described herein is a golf club head that comprises a body and a strike plate. The body comprises a heel portion, a sole portion, a toe portion, and a top portion. The strike plate comprises an outer peripheral edge and at least a portion of a strike face. Furthermore, the strike plate is welded to the body via a peripheral weld between the outer peripheral edge of the strike plate and the body. The outer peripheral edge of the strike plate comprises at least one welded portion, welded to the body via the peripheral weld, and at least one non-welded portion, not welded to the body.

Abstract: An iron type golf club head has a club face provided with face lines and comprises an external weight member secured to a sole portion of a head main body and having a specific gravity larger than the head main body. The external weight member has a center of gravity located on the toe side of the middle point in the toe-heel direction of the face lines, and comprises a wide portion and a narrow portion located on the heel side of the wide portion. The wide portion is located on the toe side of the above-mentioned middle point. The wide portion has a front edge extending along the leading edge of the sole portion, and the narrow portion has a front edge extending along the leading edge and located backward of the front edge of the wide portion.

Abstract: A wood-style golf club head includes a strike face and a body that cooperate to define a hollow internal club head volume. The strike face formed from a strike plate having an outer perimeter and a frame surrounding the strike plate. The strike plate is affixed to the frame across the entire outer perimeter. The strike plate and frame define a continuous ball striking surface that has a surface texture characteristic of milling that extends continuously across both the strike plate and the frame.

Abstract: A golf club head includes a first portion joined to a second portion to at least partially define an interior club head volume. The first portion includes a wall defining an outer boundary of the club head volume, and a support rib extending from the wall to operatively stiffen the first portion. The second portion of the golf club head can engage the support rib, and the support rib can be adhered to the second portion to join the first portion and the second portion.

Abstract: A golf club head including a ball striking face, heel, toe, top ridge, and an arcuate bottom sole having a greater ground contact area located adjacent a central portion of a leading edge of the club head that diminishes in size in a heel to toe direction toward a trailing edge of the club head. The club head is further defined by a leading edge being configured with a radius no greater than 50 mm approximately midway between the heel and toe to enable the golf club head to enter and penetrate the supporting turf during the execution of a golf shot.

Abstract: A correlated set of golf club heads comprises a first and second golf club head. Each club head has a striking face, a rear surface, a top portion, a sole portion, a toe portion, a heel portion, and a loft. The striking face has a first plurality of scorelines defining a scoreline heel-ward extent and a scoreline toe-ward extent. The plurality of scorelines comprises a scoreline length LS1 being the lateral distance between the heel-ward extent and the toe-ward extent. The loft of the second golf club head is greater than that of the first golf club head. The scoreline length LS2 of the second golf club head differs from that of the first scoreline length LS1.

Abstract: A golf club head includes a body defining an interior cavity. The body includes a sole positioned at a bottom portion of the golf club head, a crown positioned at a top portion, and a skirt positioned around a periphery between the sole and crown. The body has a forward portion and a rearward portion. The club head includes a face positioned at the forward portion of the body. The face defines a striking surface having an ideal impact location at a golf club head origin. Embodiments include club heads for a fairway wood that at least one of a high moment of inertia, a low center-of-gravity, a thin crown and a high coefficient of restitution. A sleeve for easily disconnecting a shaft to the club head allows for selective adjustment of the head's loft and lie angle.

Abstract: A wood-style golf club head includes a strike face and a body that cooperate to define a hollow internal club head volume. The strike face formed from a strike plate having an outer perimeter and a frame surrounding the strike plate. The strike plate is affixed to the frame across the entire outer perimeter. The strike plate and frame define a continuous ball striking surface that has a surface texture characteristic of milling that extends continuously across both the strike plate and the frame.

Abstract: A golf club set 2 includes three or more golf clubs. A straight line passing through a face center Fc and parallel to a toe-heel direction is defined as an X-axis, and an X-coordinate of a sweet spot SS is defined as SS-X. When the SS-Xs of respective heads are defined as SS-X1, SS-X2, . . . , SS-Xn (n is an integer of equal to or greater than 3) in an ascending order of a loft angle from the head having the smallest loft angle, the set 2 satisfies the following formulas 1 and 2: SS-X1?SS-X2? . . . ?SS-Xn??(Formula 1); SS-X1>SS-Xn??(Formula 2).

Abstract: A golf club set includes at least one first golf club whose loft angle is not less than 46 degrees and less than 56 degrees, and at least one second golf club whose loft angle is not less than 56 degrees and less than 60 degrees. The first and second golf clubs each comprise a face provided with score lines each formed by a groove having a groove bottom and a pair of opposite grooves walls which are inclined at an inclination angle with respect to a normal direction to the face so that the groove width between the opposite grooves walls is increased from the groove bottom toward the face. The inclination angle of the groove walls of the score lines of the first golf club is in the range from 28 to 42 degrees. The inclination angle of the groove walls of the score lines of the second golf club is in the range from 23 to 37 degrees and smaller than that of the first golf club.

Abstract: The present invention is direct to a set of golf clubs comprising long irons, mid-irons and short irons. The invention contemplates the use of titanium or steel for the main body portion and significant tungsten weight members coupled to at least the toe and a heel weight member coupled in a hosel cavity.

Abstract: The present invention is direct to a set of golf clubs comprising long irons, mid-irons and short irons. The invention contemplates the use of titanium or steel for the main body portion and a tungsten weight member coupled to the toe and a tungsten heel weight member coupled in a hosel cavity.

Abstract: A system of golf club heads having reduced variability in characteristic time is disclosed herein. Further, a method of manufacturing a system of golf club heads having reduced variability in characteristic time is disclosed herein.

Abstract: A wood type golf club head includes a face portion, a crown portion, and a sole portion. The face portion includes an impact area, a toe-side area on a toe side with respect to the impact area, and a heel-side area on the heel side with respect to the impact area. At least one groove is formed in the toe-side area and/or the heel-side area. The depth of the groove is 0.025 mm (inclusive) to 0.508 mm (inclusive). A groove area occupancy in the toe-side area is different from a groove area occupancy in the heel-side area.

Abstract: A golf club head includes a body having a crown opposite a sole, a toe end opposite a heel end, a back end, and a hosel. The golf club head also includes a club face having a loft below a loft threshold in which increasing a coefficient of friction between a golf ball and the club face decreases the spin imparted on the golf ball after impact with the club face. A surface feature positioned on a portion of the club face is configured to increase the coefficient of friction between the golf ball and the club face.

Abstract: An insert for a golf club head, wherein the insert includes a generally planar base surface and a maximum thickness, Tmax, measured perpendicular to the base surface. The insert further includes a first component comprising a non-metallic material, and a second component coupled to the first component and comprising a continuous, formed metal sheet having a thickness between 0.01 mm and 3.0 mm, the second component extending a maximum distance, D, in a direction perpendicular to the base surface, that is no less than 6 mm. The insert is configured such that a ratio D/Tmax is no less than 0.50.

Abstract: A cavity back iron type club head includes a striking plate having a substantially planar striking surface and a rear surface defining a thickness therebetween. The rear surface defines a striking plate rear cavity region. A perimeter support is coupled to a peripheral portion of the striking plate. The surface area of the striking surface is related to the club head loft angle by the equation SSA?14.4(L)+2875, where SSA is the surface area of the striking surface in units of square-millimeters and L is the club head loft angle in units of degrees.

Abstract: Embodiments of a golf club set with progressive tapered face thickness coordinated with club loft are generally described herein. Other embodiments may be described and claimed.

Abstract: A golf club head having a hollow structure includes a face, an internal surface, and an external surface. The face defines a front portion of the golf club head and includes a face surface defining a ball-striking surface. The internal surface includes an internal depression that at least partly extends along the outline of the face surface. The external surface includes an external depression that at least partly extends along the outline of the face surface.

Abstract: A putter head is provided. The putter head includes a putter face defining a groove pattern extending in a heel-to-toe direction of the putter face. The groove pattern includes multiple sets of grooves spaced apart from one another in a vertical direction of the putter face. The sets of grooves have different cross-sectional configurations to adjust a launch angle of a golf ball based on an impact location of the golf ball along the vertical direction of the putter face.

Abstract: A golf club 4 includes a head hd and a sole surface 12. The sole surface 12 includes a ridgeline RL extending from a toe side toward a heel side, a leading surface Si positioned on a face side of the ridgeline RL and inclined upward toward the face side, and a trailing surface S2 positioned on a back side of the ridgeline RL and inclined upward toward the back side. Inclination angles at respective positions of the trailing surface S2 are defined as ?2c at a central position, ?2t at a toe reference position, and ?2h at a heel reference position. Then, the head hd satisfies at least one of the following (a) and (b): (a) The inclination angle ?2t is greater than the inclination angle ?2c (b) The inclination angle ?2h is greater than the inclination angle ?2c.

Abstract: The present invention relates to an iron-type golf club head having a hollow body cavity, a hosel with a shaft-receiving bore that communicates with the hollow body cavity to form a continuous cavity structure, and a center of gravity located closer to the toe than to the heel. The iron-type golf club head preferably includes a face component with a striking face and a rear extending sole portion, and may also include supporting ribs within the continuous cavity structure, a hosel cutout covered by a cover made from a lower-density material than that of the hosel, and through-holes extending through a wall of the hosel.

Abstract: A golf club head, including a striking face having a plurality of grooves formed therein, a center region, a toe region, and a heel region, a plurality of miniature grooves formed therein, the plurality of miniature grooves limited to the central region of the striking face, each of the plurality of miniature grooves extending across the striking face parallel to the grooves, each of the plurality of miniature grooves having a miniature groove width of less than 0.500 mm, wherein the miniature groove width is the distance between an uppermost intersection of each miniature groove and the front surface and a lowermost intersection of each miniature groove and the front surface; a plurality of arcuate grooves limited to the toe region; wherein the grooves, the miniature grooves, and the arcuate grooves do not intersect one another.

Abstract: Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a body portion with a toe portion, a heel portion, a top portion, a sole portion, a back portion, and a face portion. The body portion may comprise stainless steel having a density between 7.0 and 8.3 grams per cubic centimeter and a tensile strength between 600 million and 800 million grams per cubic centimeter. The golf club head may include an interior cavity and a plurality of weight portions. The interior cavity may be filled with an elastic polymer material. Other examples and embodiments may be described and claimed.

Abstract: A correlated set of golf club heads is provided. The set of golf clubs has a first club head that, when oriented in a reference position, includes: a first loft angle, a first heel portion, a first toe portion opposite the first heel portion, a first top portion, and a first sole portion that comprises a first sole rail having a first setback length. The set of golf clubs also has a second club head that, when oriented in the reference position, includes: a second loft angle greater than the first loft angle, a second heel portion, a second toe portion opposite the second heel portion, a second top portion, and a second sole portion that comprises a second sole rail having a second setback length that is different from the first setback length.

Abstract: Some embodiments include a first golf club head and a second golf club head. The first golf club head includes a body having a face portion, and the second golf club head includes a body having a face portion. Meanwhile, the first club face portion comprises a face surface and at least one first club groove, and the second club face portion comprises a face surface and at least one second club groove. An edge radius of the first club head groove(s) can be less than an edge radius of the second club head groove(s), a base width of the first club head groove(s) can be less than a base width of the second club head groove(s), and/or a sidewall angle of the first club head groove(s) can be greater than a sidewall angle of the second club head groove(s). Other embodiments of related club heads and methods are also disclosed.

Abstract: An insert for a golf club head, wherein the insert includes a generally planar base surface and a maximum thickness, Tmax, measured perpendicular to the base surface. The insert further includes a first component comprising a non-metallic material, and a second component coupled to the first component and comprising a continuous, formed metal sheet having a thickness between 0.01 mm and 3.0 mm, the second component extending a maximum distance, D, in a direction perpendicular to the base surface, that is no less than 6 mm. The insert is configured such that a ratio D/Tmax is no less than 0.50.

Abstract: A method for manufacturing a golf club head providing a golf club head comprising a golf club face, and forming a groove and a second portion at the golf club face comprising rotating a groove forming tool such that the groove forming tool forms the groove in the golf club face such that the groove is compliant with a Thirty Degree Rule when measured from a first top radius of the groove and a second top radius of the groove; and a second portion adjacent to the one of the first top radius or the second top radius of the groove, and at a first angle of approximately eight to eighteen degrees relative to the golf club face of the golf club, and has a length of approximately 0.0002 inch to 0.0047 inch; and actuating the groove forming tool from a first end to a second end of the golf club face.

Abstract: The present invention is directed to a set of golf clubs comprising long irons, mid-irons and short irons. The irons have a progressive horizontal CG location. Preferably, the long and MID irons have a CG located between about 1 mm and 3 mm towards the hosel and the short iron CG is located between about 3 mm and 4 mm toward the hosel. Further the irons can have a substantially constant blade width with progressively increasing toe height and progressively decreasing scoreline width.

Abstract: The present invention is direct to a set of golf clubs comprising long irons, mid-irons and short irons. The long irons have a first center of gravity positioned horizontally from the face center by a first distance. The mid-irons have a second center of gravity positioned horizontally from the face center by a second distance. The short irons have a third center of gravity positioned horizontally from the face center by a third distance.

Abstract: A plurality of golf club heads wherein the difference in spin is minimized is disclosed herein. More specifically, the present invention discloses a plurality of fairway wood type golf club head with a volume of between about 110 cubic centimeters (cc) and about 250 cc, wherein the change in backspin between any two clubs within the plurality of metal wood type golf club heads is less than about 600 revolutions per minute (rpm). A plurality of golf clubs in accordance with the present invention may generally have all of its clubs maintain a center of gravity (CG) location that is less than about 8.0 mm away from a neutral axis of the golf club head regardless of the difference in loft of the specific golf club head within the plurality of golf club heads.

Abstract: A golf club putter having a low head center of gravity and a high MOI is disclosed herein. The putter has a metal body comprising a face and a hosel, a low density dampening layer affixed to the body, and a high density rear weight affixed to the dampening layer, and the dampening layer has a first surface that forms an angle with an opposing second surface that is inversely proportional to the distance of the hosel from a heel side of the body.

Abstract: A golf putter head is made entirely of pottery clay and can have a glazed body and an unglazed striking face. This putter head is preferably fabricated by forming a basic disc shape on a potter's wheel and then removing a portion of the disc shape away to form a striking face. A putter with a mallet shaped head can be formed. After drying, the clay can be glazed and then fired. The putter head can alternatively be fabricated using a ram press molding technique.

Abstract: Fairway wood-type golf clubs as described herein may include: (a) a club head with a volume of at least 300 cc; (b) a shaft member attached to the club head, wherein the golf club has a length between 37 and 43 inches; and (c) a grip or handle member attached to the shaft member. The club head may further include: (1) a ball striking face, wherein the ball striking face has a loft angle between 12 and 32 degrees; and (2) a club head body engaged or integrally formed with the ball striking face, with a sole portion that includes a ground-engaging surface.