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: Disclosed herein is an iron-type golf club head that comprises a strike plate, an enclosed internal cavity, and a rear aperture formed in a rear wall. The iron-type golf club head also comprises a stiffening plug, within the internal cavity and compressed between the back surface of the strike plate and the rear wall. The stiffening plug is insertable, through a rear aperture, into the internal cavity. The iron-type golf club head further comprises a rear fascia covering the rear aperture and at least a portion of the rear wall. A characteristic time (CT) at a geometric center of the strike face is at least 250 microseconds. A maximum thickness of the strike plate, at the strike face, is less than 3.5 millimeters, inclusive. The strike plate, excluding grooves, has a minimum thickness between 1.1 millimeters and 2.2 millimeters.

Abstract: A golf club including at least one component with a construction that includes a composite material with color/metallic coated fibers. In some embodiments, at least a portion of an outer surface of the golf club head is defined by a layered structure including color/metallic coated fibers. The layered structure may include a non-woven composite layer comprising a plurality of unidirectional fiber composite plies and woven composite layer disposed over the non-woven fiber composite layer and including color/metallic coated fibers. In some embodiments, an optically transparent coating may be disposed over the woven composite layer. In some embodiments, the color/metallic coated fibers may be electroplated fibers.

Abstract: A method of making a golf club head includes interposing bonding tape between a first piece and a second piece of the golf club head such that the first piece is temporarily adhered to the second piece via a tackiness of the bonding tape. The method additionally includes positioning the first piece, the second piece, and the bonding tape, interposed between the first piece and the second piece, in a vacuum bag, and reducing a pressure within the vacuum bag, relative to a pressure external to the vacuum bag, such that the vacuum bag collapses onto the first piece and the second piece and compresses the bonding tape between the first piece and the second piece. The method also includes heating the bonding tape, at least to a curing temperature of the bonding tape, when the pressure within the vacuum bag is reduced.

Abstract: A golf club including at least one component with a construction that includes a composite material with color/metallic coated fibers. In some embodiments, at least a portion of an outer surface of the golf club head is defined by a layered structure including color/metallic coated fibers. The layered structure may include a non-woven composite layer comprising a plurality of unidirectional fiber composite plies and woven composite layer disposed over the non-woven fiber composite layer and including color/metallic coated fibers. In some embodiments, an optically transparent coating may be disposed over the woven composite layer. In some embodiments, the color/metallic coated fibers may be electroplated fibers.

Abstract: A method of removing a backing layer from a panel, made of an uncured pre-impregnated fiber-reinforced polymer, comprises a step of orienting the panel into a backing-separation orientation relative to an edge-engagement tool. The method also comprises a step of positioning the panel into a backing-separation position relative to the edge-engagement tool. The method further comprises a step of moving the edge-engagement tool, when the panel is in the backing-separation orientation and the backing-separation position, so that backing-engagement features of the edge-engagement tool engage the backing layer, at only an edge portion of the backing layer, and just the edge portion of the backing layer separates from the panel. The method additionally comprises a step of gripping the edge portion of the backing layer, and, when gripped, moving the backing layer relative to the panel so that an entirety of the backing layer separates from the panel.

Abstract: A method of creating a multi-layer composite strike face of a golf club head includes positioning a first non-cluster panel. The method also includes creating and attaching a cluster panel to the first non-cluster panel, which includes attaching a first elongated strip to the first non-cluster panel at a first strip angle, attaching a second elongated strip to a portion of the first elongated strip and a portion of the first non-cluster panel at a second strip angle, and attaching a third elongated strip to a portion of the second elongated strip, and a portion of the first non-cluster panel at a third strip angle.

Abstract: A golf ball having a North pole and a South pole, an equator and a primary meridian, the equator and primary meridian divide the ball into North, South, East and West hemispheres, and Northeast, Northwest, Southeast and Southwest quadrants. A grid pattern projected on the ball surface divides the ball laterally and longitudinally into a number of overlapping zones. The dimples within the zones have average depths hex, hsx, hpx, hei, hsi and hpi and selected values of ?e, ?s and ?p which are the difference between the minimum and maximum values of the relative ratios of the dimple depths, hexr/heir, hsxr/hsir and hpxr/hpir determined when the ball is rotated by a value of ? from 0 to 360° about its polar axis.

Abstract: A method of removing a backing layer from a panel, made of an uncured pre-impregnated fiber-reinforced polymer, comprises a step of orienting the panel into a backing-separation orientation relative to an edge-engagement tool. The method also comprises a step of positioning the panel into a backing-separation position relative to the edge-engagement tool. The method further comprises a step of moving the edge-engagement tool, when the panel is in the backing-separation orientation and the backing-separation position, so that backing-engagement features of the edge-engagement tool engage the backing layer, at only an edge portion of the backing layer, and just the edge portion of the backing layer separates from the panel. The method additionally comprises a step of gripping the edge portion of the backing layer, and, when gripped, moving the backing layer relative to the panel so that an entirety of the backing layer separates from the panel.

Abstract: Disclosed herein is an iron-type golf club head that comprises a strike plate, an enclosed internal cavity, and a rear aperture formed in a rear wall. The iron-type golf club head also comprises a stiffening plug, within the internal cavity and compressed between the back surface of the strike plate and the rear wall. The stiffening plug is insertable, through a rear aperture, into the internal cavity. The iron-type golf club head further comprises a rear fascia covering the rear aperture and at least a portion of the rear wall. A characteristic time (CT) at a geometric center of the strike face is at least 250 microseconds. A maximum thickness of the strike plate, at the strike face, is less than 3.5 millimeters, inclusive. The strike plate, excluding grooves, has a minimum thickness between 1.1 millimeters and 2.2 millimeters.

Abstract: A method of removing a backing layer from a panel, made of an uncured pre-impregnated fiber-reinforced polymer, comprises a step of orienting the panel into a backing-separation orientation relative to an edge-engagement tool. The method also comprises a step of positioning the panel into a backing-separation position relative to the edge-engagement tool. The method further comprises a step of moving the edge-engagement tool, when the panel is in the backing-separation orientation and the backing-separation position, so that backing-engagement features of the edge-engagement tool engage the backing layer, at only an edge portion of the backing layer, and just the edge portion of the backing layer separates from the panel. The method additionally comprises a step of gripping the edge portion of the backing layer, and, when gripped, moving the backing layer relative to the panel so that an entirety of the backing layer separates from the panel.

Abstract: Golf entertainment venues with a computing system configured to optically identify and track graphical images located on golf balls hit by players. The graphical image located on a golf ball can be associated with a player and the computing system can assign the player a score when that player's golf ball successfully arrives at a target area. In some embodiments, the graphical images can be printed on the golf balls using, for example, a single pass inkjet printing technique. In some embodiments, the computing system can be configured to sort golf balls based on optically identified graphical images.

Abstract: Disclosed herein is an iron-type golf club head that comprises a strike plate, an enclosed internal cavity, and a rear aperture formed in a rear wall. The iron-type golf club head also comprises a stiffening plug, within the internal cavity and compressed between the back surface of the strike plate and the rear wall. The stiffening plug is insertable, through a rear aperture, into the internal cavity. The iron-type golf club head further comprises a rear fascia covering the rear aperture and at least a portion of the rear wall. A characteristic time (CT) at a geometric center of the strike face is at least 250 microseconds. A maximum thickness of the strike plate, at the strike face, is less than 3.5 millimeters, inclusive. The strike plate, excluding grooves, has a minimum thickness between 1.1 millimeters and 2.2 millimeters.

Abstract: Disclosed herein is a golf club head that comprises a strike face. The strike face has a central region, defined by a forty millimeter by twenty millimeter rectangular area centered on a center of the strike face and elongated in a heel-to-toe direction. Within the central region, the strike face has a characteristic time (CT) of no more than 257 microseconds. Within the central region, no less than 25% of the strike face has a coefficient of restitution (COR) of at least 0.8. Within the central region, no less than 60% of the strike face has a CT of at least 235 microseconds. Within the central region, no less than 35% of the strike face has a CT of at least 240 microseconds.

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 has a cast cup including a forward portion of a crown and a forward portion of a sole of the golf club head. A polymeric rear ring is coupled to heel and toe portions of the cast cup to form a club head body defining a crown opening and a sole opening. A crown insert is coupled to the crown opening, and a sole insert coupled to the sole opening. The club head has an inertia generator including an outwardly extending protrusion formed in the sole and a rear weight positioned at an aft end of the protrusion, the sole insert defining at least a portion of the protrusion of the inertia generator. The sole insert includes a composite material having a thickness between 0.45 mm and 1 mm, and a plurality of ribs positioned along an internal surface, and at least one rib is inside the inertia generator.

Abstract: Disclosed herein is a driver-type golf club head that has a strike face. The strike face has a central region, defined by a 40 mm by 20 mm rectangular area centered on a geometric center of the strike face and elongated in a heel-to-toe direction. The driver-type golf club head is configured such that after 500 impacts of a standard golf ball at the geometric center of the strike face, where at each impact the standard golf ball has a velocity of 52 meters per second, the CT of the strike face at any point within the central region is less than 256 microseconds and the CT at the geometric center of the strike face is no more than five microseconds different than the initial CT value.

Abstract: A golf club head that comprises a hollow interior cavity, a first piece, a second piece, adhesively bonded to the first piece along a first bonded joint, a third piece, adhesively bonded to the first piece along a second bonded joint, and a fourth piece, adhesively bonded to the first piece along a third bonded joint. A volume of the golf club head is at least 120 cubic centimeters (cc) and at most 600 cc. The first bonded joint has a first-joint bond area. The second bonded joint has a second-joint bond area. The third bonded joint has a third-joint bond area. A summation of the first-joint bond area, the second-joint bond area, and the third-joint bond area is at least 1,950 mm2 and at most 3,400 mm2.

Abstract: A golf club head that includes a plate opening, a plate-opening recessed ledge defining the plate opening, and a strike plate attached to the plate-opening recessed ledge. The golf club head also comprises a hollow interior cavity. At least a portion of a top half of the plate-opening recessed ledge is made of a first material having a first density and at least a portion of a bottom half of the plate-opening recessed ledge is made of a second material having a second density that is greater than the first density. The top half of the plate-opening recessed ledge is closer to a crown portion of the golf club head than the bottom half of the plate-opening recessed ledge and the bottom half of the plate-opening recessed ledge is closer to a sole portion of the golf club head than the top half of the plate-opening recessed ledge.

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.