Abstract: A golf club head comprising a body and a hollow stiffening structure is disclosed herein. The body comprises a face section, a sole section, and a crown section, and defines a hollow interior. The hollow stiffening structure extends within the hollow interior from the crown section to the sole section to reduce stresses placed on the face section during impact with a golf ball. The hollow stiffening structure creates stiffness in a vertical, crown-sole direction of the body, while reducing stiffness in the horizontal, front-rear direction. These two effects combine to increase ball speed and improve other performance metrics from low center through high center ball impact locations, and simultaneously lower CT of the golf club.

Abstract: Disclosed herein is a driver-type golf club head that is made from at least one first material, having a density between 0.9 g/cc and 3.5 g/cc, at least one second material, having a density between 3.6 g/cc and 5.5 g/cc, and at least one third material, having a density between 5.6 g/cc and 20.0 g/cc. The first material has a first mass no more than 55% and no less than 25% of the total mass of the golf club head. The second material has a second mass no more than 65% and no less than 20% of the total mass of the golf club head. The third material has a third mass equal to the total mass of the golf club head less the first mass of the first material and the second mass of the second material.

Abstract: A golf club head includes a front body and a rear body coupled to the front body to define a hollow cavity therebetween. The front body includes a strike face that defines a ball striking surface, a hosel, and a frame that at least partially surrounds the strikeface and extends rearward from a perimeter of the strikeface away from the ball striking surface. The strike face and frame are formed from a thermoplastic composite comprising a thermoplastic polymer having a plurality of discontinuous fibers embedded therein. Each of the plurality of discontinuous fibers have a length between about 0.01 mm and 3 mm. In some embodiments, the thermoplastic composite is 30% to 70% fibers by volume.

Abstract: A putter with a putter head that has a rear hollow cavity enclosed within the putter head body to help move the center of gravity forward and a shaft axis that intersects the center of gravity of the putter head within a predetermined range is disclosed. The putter head may have a heel counterweight to move the center of the gravity of the putter head to the desired direction. The hollow cavity in the putter head may extend from a heel region to the toe region of the putter head. In some examples, the hollow cavity may comprise a plurality of hollow cavities or may be a single cavity located in the heel region or the toe region.

Abstract: A golf club head includes a face plate including a plate front surface constituting a club face, a plate rear surface opposite the plate front surface and having an outer peripheral portion, and a plate side surface, and a head main body being provided with an opening to receive the face plate and a receiving surface formed around a periphery of the opening to support the outer peripheral portion of the plate rear surface. The receiving surface is formed with a partially interrupted discontinuity so that the outer peripheral portion has a non-supported region that is not directly supported by the head main body. A portion of the plate side surface corresponding to the non-supported region is not directly supported by the head main body. The face plate is fixed to the head main body by a plastic deformation portion of the head main body.

Abstract: Described herein is a golf club head. The golf club head comprises a heel portion, a sole portion, a toe portion, opposite the heel portion, a top portion, opposite the sole portion, a rear portion, and a front portion, opposite the rear portion and comprising a strike face. An outer surface of at least the rear portion and at most a limited part of the strike face is made of a non-oxidizable metal material. At least a part of the strike face is made of an oxidizable metal material.

Abstract: The present disclosure relates to a face for a golf driver including a head for hitting a ball and, a sweet spot point that is a center position of a roll, which is formed in a round shape from the top to the bottom in the front of a head body constituting the head, and a bulge, which is formed in a round shape to the left and right sides thereof, for hitting the ball, and a sweet spot area, which is a specific portion around the sweet spot point, the face include: a sweet spot plane obtained by flattening the sweet spot area of the face; and toe planes and heel planes maintaining roll and bulge lines, and formed in multiple stages in toe and heel areas on the left and right sides of the sweet spot area.

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 having a front portion, a rear portion, a toe portion, a heel portion, a top portion, and a bottom portion. The front portion may have a face portion. A rear surface of the face portion may have a plurality of face regions arranged in a plurality of rows and columns forming a grid. The plurality of face regions may have differing thicknesses to control characteristic time (CT) across the face portion. Other examples and embodiments may be described and claimed.

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: Examples of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a body portion of a golf club head may include a front portion. A face portion may be coupled to the front portion. The face portion may include a central strike portion and a perimeter. A plurality of projections may extend from the face portion to provide a ball striking surface for impacting a golf ball. The plurality of projections may be aligned in one or more directions across the face portion and may progressively increase in size in any direction from the central strike portion to the perimeter of the face portion. Other examples and examples may be described and claimed.

Abstract: A golf club head has a striking face with a plurality of scorelines including a first scoreline and a second scoreline adjacent thereto. The striking face also has a plurality of auxiliary grooves each spaced from the scorelines. In a first imaginary vertical plane, a first path is formed by a first intersection between the first imaginary vertical plane and the striking face, and the auxiliary grooves have a first concentration no less than 0.17 measured between the first and second scorelines. A second imaginary vertical plane is horizontally spaced from the first imaginary plane. A second path is formed in the second imaginary vertical plane by a second intersection between the second imaginary vertical plane and the striking face. The auxiliary grooves in the second imaginary vertical plane have a second concentration that is different from the first concentration measured between the first and second scorelines.

Abstract: A golf club head and a method of manufacturing a golf club head are described herein. The golf club head comprises a club face with a face portion, and grooves positioned on the club face. The grooves each comprise a bottom, a first side wall adjacent the bottom, a second side wall adjacent the bottom, a first top radius adjacent the first side wall, and a second top radius adjacent the second side wall. The club face further comprises a second portion positioned between the face portion, and the first top radius and the second top radius. The second portion of the club face allows for the grooves to appear visually wider to a player, which can provide psychological effects to benefit performance, while still conforming to USGA groove widths standards.

Abstract: An iron-type golf club head has a hosel portion, a heel portion, a sole portion, a toe portion, a topline portion, and a striking face including a center face location. A toe side topline-to-sole contour of the striking face is more lofted than a center face topline-to-sole contour of the striking face, a heel side topline-to-sole contour of the striking face is less lofted than the center face topline-to-sole contour, a topline side toe-to-heel contour of the striking face is more open than a center face toe-to-heel contour of the striking face, and a sole side toe-to-heel contour of the striking face is more closed than the center face toe-to-heel contour. The toe side topline-to-sole contour, the center face topline-to-sole contour, the heel side topline-to-sole contour, the topline side toe-to-heel contour, the center face toe-to-heel contour, and the sole side toe-to-heel contour are straight line contours.

Abstract: An iron-type golf club head includes a heel, a toe, a top portion, a sole portion, a top portion, a rear portion, and a striking wall. The striking wall includes a striking face having a plurality of scorelines and a face center and a rear surface. A minimum striking wall thickness Tmin is no greater than 2.5 min. A thickened central region of the striking wall has a maximum thickness, Tmax, greater than Tmin but no greater than 2.75. A first thickness T1 of the striking wall corresponds with a first location spaced toe-ward from the face center by a first distance D1 of between 20 mm and 30 mm. A second thickness T2 of the striking wall. corresponds with a second location spaced heel-ward from the face center by the first distance D1 such that T1 is greater than T2 by no less than 0.05 mm.

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: Provided are a golf club head and a method for producing the golf club head. The golf club head comprises a striking face that in turn comprises a recurrent texture pattern that has a period T and that is defined by a plurality of depressions, each depression having an average depth no greater than 0.10 mm. The striking face also comprises a plurality of scorelines that at least partially intersect the recurrent texture pattern and that have a scoreline pitch Ps such that T/Ps is greater than 1.0, each scoreline having an average depth no less than 0.10 mm.

Abstract: A method of forming a golf club head assembly includes aligning a faceplate with a recess of a club head; welding the faceplate to the club head; then, after welding the faceplate, heating the club head and the faceplate to at least a solvus temperature of the faceplate for a predetermined amount of time; and then, after heating the club head and the faceplate, allowing the club head and the faceplate to air cool.

Abstract: The golf club head according to the present invention is a golf club head including a face portion, a crown portion, a sole portion, and a hosel portion configured to accept insertion of a shaft. A reference sole line of intersection which is a line of intersection between a plane containing a central axis of the shaft and perpendicular to a setting surface and a surface of the sole portion with the golf club head in a reference state is prescribed, and a curvature radius of a circular arc that passes through three points on the reference sole line of intersection respectively corresponding to a face center, a position 25 mm from the face center on a toe side and a position 25 mm from the face center on a heel side is 5.0 to 6.0 inches.

Abstract: Embodiments of a golf club head comprising a body having a body material density, a strike face having a strike face material density, and a coating comprising a coating material having a coating material density greater than the body material density or the strike face material density are described herein.

Abstract: Examples of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a body portion of a golf club head may include a front portion. A face portion may be coupled to the front portion. The face portion may include a central strike portion and a perimeter. A plurality of projections may extend from the face portion to provide a ball striking surface for impacting a golf ball. The plurality of projections may be aligned in one or more directions across the face portion and may progressively increase in size in any direction from the central strike portion to the perimeter of the face portion. Other examples and examples may be described and claimed.

Abstract: Embodiments of golf club heads having a hydrophobic surface and methods to manufacture such golf club heads are generally described herein. The golf club heads are configured to comprise a ball-striking face and at least two channels formed therein. The channels are separated by a land portion of the ball-striking face extending therebetween. The land portion is associated with at least a first step portion extending at a first elevation and a second step portion extending at a second elevation, the second elevation being higher than the first elevation relative to a bottom of the channels. Each of the first and second step portions is so dimensioned as to be associated with a substantially hydrophobic contact angle.

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 head has a striking face with a plurality of scorelines including a first scoreline and a second scoreline adjacent thereto. The striking face also has a plurality of auxiliary grooves each spaced from the scorelines. In a first imaginary vertical plane, a first path is formed by a first intersection between the first imaginary vertical plane and the striking face, and the auxiliary grooves have a first concentration no less than 0.17 measured between the first and second scorelines. A second imaginary vertical plane is horizontally spaced from the first imaginary plane. A second path is formed in the second imaginary vertical plane by a second intersection between the second imaginary vertical plane and the striking face. The auxiliary grooves in the second imaginary vertical plane have a second concentration that is different from the first concentration measured between the first and second scorelines.

Abstract: An iron-type golf club head has a hosel portion, a heel portion, a sole portion, a toe portion, a topline portion, and a striking face including a center face location. A toe side topline-to-sole contour of the striking face is more lofted than a center face topline-to-sole contour of the striking face, a heel side topline-to-sole contour of the striking face is less lofted than the center face topline-to-sole contour, a topline side toe-to-heel contour of the striking face is more open than a center face toe-to-heel contour of the striking face, and a sole side toe-to-heel contour of the striking face is more closed than the center face toe-to-heel contour. The toe side topline-to-sole contour, the center face topline-to-sole contour, the heel side topline-to-sole contour, the topline side toe-to-heel contour, the center face toe-to-heel contour, and the sole side toe-to-heel contour are straight line contours.

Abstract: A head includes a head body and a face plate fixed to the head body. The face plate includes a plate front surface, a plate back surface, and a plate side surface. The plate back surface includes a center of figure. The head body includes a receiving surface which supports the plate back surface from rear. An outer peripheral edge part of the plate back surface includes a projection part which abuts on the receiving surface. If a toe-side region, a top-side region, and a sole-side region of the projection part are defined as a first section, and a heel-side region of the projection part is defined as a second section, then a width of the projection part is varied in the first section.

Abstract: A method of forming a golf club head assembly includes aligning a faceplate with a recess of a club head; welding the faceplate to the club head; then, after welding the faceplate, heating the club head and the faceplate to at least a solvus temperature of the faceplate for a predetermined amount of time; and then, after heating the club head and the faceplate, allowing the club head and the faceplate to air cool.

Abstract: A golf club head is described having a club head portion, a shaft portion connected to the club head portion, and a grip portion connected to the shaft portion. The club head portion has a heel portion, a sole portion, a toe portion, a crown portion, a hosel portion, and a striking face. The striking face has a center face roll contour, a toe side roll contour, a heel side roll contour, a center face bulge contour, a crown side bulge contour, and a sole side bulge contour. The toe side roll contour is more lofted than the center face roll contour. The heel side roll contour is less lofted than the center face roll contour. The crown side bulge contour is more open than the center face bulge contour, and the sole side bulge contour is more closed than the center face bulge contour.

Abstract: A golf club head is described having a club head portion, a shaft portion connected to the club head portion, and a grip portion connected to the shaft portion. The club head portion has a heel portion, a sole portion, a toe portion, a crown portion, a hosel portion, and a striking face. The striking face has a center face roll contour, a toe side roll contour, a heel side roll contour, a center face bulge contour, a crown side bulge contour, and a sole side bulge contour. The toe side roll contour is more lofted than the center face roll contour. The heel side roll contour is less lofted than the center face roll contour. The crown side bulge contour is more open than the center face bulge contour, and the sole side bulge contour is more closed than the center face bulge contour.

Abstract: A golf club head has a striking face with a plurality of scorelines including a first scoreline and a second scoreline adjacent thereto. The striking face also has a plurality of auxiliary grooves each spaced from the scorelines. In a first imaginary vertical plane, a first path is formed by a first intersection between the first imaginary vertical plane and the striking face, and the auxiliary grooves have a first concentration no less than 0.17 measured between the first and second scorelines. A second imaginary vertical plane is horizontally spaced from the first imaginary plane. A second path is formed in the second imaginary vertical plane by a second intersection between the second imaginary vertical plane and the striking face. The auxiliary grooves in the second imaginary vertical plane have a second concentration that is different from the first concentration measured between the first and second scorelines.

Abstract: Methods of bifurcating the material properties of golf club heads, and wedges in particular, are disclosed herein. The methods of the present invention preserve the bendability and feel of certain parts of the club heads, such as hosel regions, while selectively hardening and increasing the durability of other features, such as scorelines and texturing on the face.

Abstract: Provided are a golf club head and a method for producing the golf club head. The golf club head comprises a striking face that in turn comprises a recurrent texture pattern that has a period T and that is defined by a plurality of depressions, each depression having an average depth no greater than 0.10 mm. The striking face also comprises a plurality of scorelines that at least partially intersect the recurrent texture pattern and that have a scoreline pitch Ps such that T/Ps is greater than 1.0, each scoreline having an average depth no less than 0.10 mm.

Abstract: A wood-type golf club head comprises a face portion having a face for striking a ball. The face comprises a first region having a surface roughness and a second region having a surface roughness larger than that of the first region. The first region is positioned centrally in a toe-heel direction of the face and in an upper side of the face. The second region is positioned adjacently to the first region on a toe side, a heel side and a lower side of the first region and the second region is formed in a U-shape in the front view of the head.

Abstract: An aerodynamic golf club head having a crown section that imparts beneficial aerodynamic properties due in part to the location of a crown apex and the curvature of the crown section.

Abstract: Described herein is a golf club head that includes a body that includes a sole portion, a crown portion, a skirt portion, a forward region, and a rearward region. The golf club head also includes a face portion including a striking face with a maximum height from the ground plane of at least about 50 mm. The golf club head has a peak crown height, from the ground plane, of at least about 60 mm. A volume of the golf club head is at least about 370 cm3. A location of a center-of-gravity of the golf club head is at a minimum distance (Zup) away from the ground plane. The difference between Zup and half of the peak crown height is less than about ?5.75 mm. A z-axis moment of inertia of the golf club head about a CG z-axis is greater than about 300 kg-mm2.

Abstract: An aerodynamic golf club head with a low center of gravity and producing reduced aerodynamic drag forces. The club head has crown section attributes that impart beneficial aerodynamic properties.

Abstract: A golf club head includes a heel portion, a toe portion, a hosel, and a striking face. The striking face includes a plurality of scorelines each having an average depth no less than about 0.10 mm, a plurality of micro-grooves each having an average depth no greater than about 0.010 mm, and a plurality of textured surface treatment regions superimposed on the micro-grooves so as to at least partially intersect the micro-grooves.

Abstract: An aerodynamic golf club head producing reduced aerodynamic drag forces via the curvature of a crown section. At least a portion of the crown section may be composed of low density materials, including nonmetallic materials.

Abstract: A golf club head is described having a club head portion, a shaft portion connected to the club head portion, and a grip portion connected to the shaft portion. The club head portion has a heel portion, a sole portion, a toe portion, a crown portion, a hosel portion, and a striking face. The striking face has a center face roll contour, a toe side roll contour, a heel side roll contour, a center face bulge contour, a crown side bulge contour, and a sole side bulge contour. The toe side roll contour is more lofted than the center face roll contour. The heel side roll contour is less lofted than the center face roll contour. The crown side bulge contour is more open than the center face bulge contour, and the sole side bulge contour is more closed than the center face bulge contour.

Abstract: A golf club head includes a heel portion, a toe portion, a hosel, and a striking face. The striking face includes a plurality of scorelines each having an average depth no less than about 0.10 mm, a plurality of first micro-grooves each having an average depth no greater than about 0.010 mm, and a plurality of second micro-grooves overlaid on the first micro-grooves, each of the second micro-grooves having an average depth greater than the average depth of the first micro-grooves. Some embodiments can also have a plurality of textured surface treatment regions superimposed on the overlaid first and second micro-grooves so as to at least partially intersect the micro-grooves.

Abstract: A set of iron type golf club heads comprising a plurality of iron type golf club heads, the plurality of iron type golf club heads comprising a long iron, a mid iron, and a short iron; wherein each of the plurality of iron type golf club heads comprise a striking face, and wherein each of the plurality of iron type golf club heads comprise a plurality of grooves formed in the striking face extending generally from a heel side of the striking face towards a toe side of the striking face; wherein the plurality of grooves of each of the plurality of iron type golf club heads comprise an edge radius, wherein the edge radius of the plurality of grooves of the long iron is greater than the edge radius of the plurality of grooves of the short iron.

Abstract: A golf putter comprised of a shaft having an axis, a hosel attached to the shaft and a head attached to the hosel. The head of the putter has a face, a top and a sole. The face of the putter is comprised of multiple facets with a degree of static loft measured from the plane of the facet to the axis of the shaft. It is preferable that there are at least four facets on the face of the putter. The first facet is proximate to the sole of the face and has a first static loft angle. The second facet is above and abuts the first facet and has a second static loft angle which is greater than the first static loft angle. The third facet abutting and above the second facet has a third static loft angle which is greater than the second static loft angle. The fourth facet abuts and is above the third facet and has a fourth static loft angle which is greater than the third static loft angle. It is preferable that the static loft angles of the at least four facets differ by only 1 degree between abutting facets.

Abstract: Embodiments of golf club heads having a hydrophobic surface and methods to manufacture such golf club heads are generally described herein. The golf club heads are configured to comprise a ball-striking face and at least two channels formed therein. The channels are separated by a land portion of the ball-striking face extending therebetween. The land portion is associated with at least a first step portion extending at a first elevation and a second step portion extending at a second elevation, the second elevation being higher than the first elevation relative to a bottom of the channels. Each of the first and second step portions is so dimensioned as to be associated with a substantially hydrophobic contact angle.

Abstract: Putting in the game of golf is an acquired art but one that must be perfected for the golfer, whether amateur or professional must master in order to be successful. A modified putter that incorporates the use of a striking surface that extends away from the face of the putter and is slightly curved with a counterweight and a slot in the face of club is contemplated. Other embodiments use the same striking surface that is affixed to the face of the putter and the use of a counterweight have also been contemplated.

Abstract: Embodiments of golf clubs, golf club heads, and methods of manufacture are described herein. In one embodiment, a golf club head includes a strike face having one or more grooves with edges, where one or more of the edges is unsmooth. Other embodiments are also described herein.

Abstract: A multi-material aerodynamic golf club head producing reduced aerodynamic drag forces via the curvature of a crown section. At least a portion of the crown section may be composed of low density materials, including nonmetallic materials.

Abstract: Golf club heads with enlarged grooves, wherein a portion of the finish adjacent or within the groove is removed to create the visual appearance of enlarged grooves. The surface finish of the groove enhancement area surrounding the groove is matched to be the same as the surface finish of the groove, preferably a bright, smooth or shiny metallic finish. This surface finish of the remainder of the striking face of the golf club is a second surface finish, preferably a dark or black matte, or rough finish. The contrast between the two finishes gives the perception that the grooves are larger than they are physically.

Abstract: A golf club head with an improved striking surface. The grooves are machined into the strike surface with tight tolerances. The face may be selectively textured to enhance certain shots that the golfer may perform. This may include providing a plurality of distinct sets of texturing and surface roughening to accommodate a plurality of different shots.

Abstract: A set of iron type golf club heads comprising a plurality of iron type golf club heads, the plurality of iron type golf club heads comprising a long iron, a mid iron, and a short iron; wherein each of the plurality of iron type golf club heads comprise a striking face, and wherein each of the plurality of iron type golf club heads comprise a plurality of grooves formed in the striking face extending generally from a heel side of the striking face towards a toe side of the striking face; wherein the plurality of grooves of each of the plurality of iron type golf club heads comprise a groove pitch measurement, wherein the groove pitch of the plurality of grooves of the long iron is greater than the groove pitch of the plurality of grooves of the short iron.

Abstract: A golf club head comprises a sole, a recessed sole port in the sole; and a rotatably adjustable sole piece adapted to be at least partially received within the sole port and comprising a central body having a plurality of contact surfaces adapted to contact the sole port and being offset from each other along a central axis extending through the central body of the sole piece. The sole piece can be positioned at least partially within the sole port at five or more rotational and axial positions with respect to the central axis, wherein at each rotational position, at least one of said contact surfaces of the central body contacts the sole port to set the axial position of the sole piece. The sole port and/or the sole piece can be generally pentagonal in shape.

Abstract: A golf club head comprises a sole, a recessed sole port in the sole; and a rotatably adjustable sole piece adapted to be at least partially received within the sole port and comprising a central body having a plurality of contact surfaces adapted to contact the sole port and being offset from each other along a central axis extending through the central body of the sole piece. The sole piece can be positioned at least partially within the sole port at five or more rotational and axial positions with respect to the central axis, wherein at each rotational position, at least one of said contact surfaces of the central body contacts the sole port to set the axial position of the sole piece. The sole port and/or the sole piece can be generally pentagonal in shape.