Abstract: A golf club head includes a head body having a front opening, a striking plate member covering the front opening, and at least one vibration-absorbing element. The striking plate member includes a striking face with a striking zone, and a back face opposite to the striking face and having a receiving groove. The vibration-absorbing element is disposed in the receiving groove.

Abstract: Ball striking devices, such as golf club heads (including putter heads), include devices within and/or otherwise engaged with the ball striking head that allow users to selectively change the sound and/or other aspects of the “feel” associated with using the ball striking device to strike a ball. In this manner, a user, a club fitter, or the like can freely customize and adjust the sound and/or other aspects of the ball striking device's feel to correspond to a particular user's preferences.

Abstract: A golf club head includes a head body having a front opening, a striking plate member, and a vibration-absorbing plate member. The striking plate member covers the front opening, and has a front striking face with a striking zone, and a ring projecting rearwardly from a rear side of the striking plate member and defining an indentation. The vibration-absorbing plate member is fixed in the indentation.

Abstract: A metal wood golf club head adapted for attachment to a shaft, comprising of a body portion composed of titanium alloy and a graphite crown portion, each portion constructed of a different density material. Combining a high-density material in the body portion, with a low-density material in the crown portion, creates an ultra-low center of gravity relative to the geometric face center, resulting in higher launch angles and spin rate ratios. The body portion has an attachment ledge section and the crown portion has attachment section that overlays the attachment section of the body. A vibration dampening gasket is disposed between the attachment sections.

Abstract: A set of iron-type golf clubs includes long irons with channel back configurations and short irons with cavity back configurations. The rear face configurations transition from channel backs through to pure cavity backs for increased performance continuum for the set. Additional design parameters for the set may also be systematically varied through the set, such as groove type and depth, loft angle, cavity volume, hitting face roughness, and sole width. At least one of the clubs of the set includes a sandwich-type construction for the hitting face having a dampening element disposed between a hitting face insert and a lightweight reinforcing core. In one embodiment, at least one club head is oversized.

Abstract: Force diversion apparatus, methods and devices including the same result in rotational motion being imparted to an impacting object.

Abstract: A golf club head consists of a shell part, and a face part; the shell part has a front opening, a holding hollowness behind the front opening, several strengthening pieces in the holding hollowness, and a slot on an upper side, which communicates with the holding hollowness; the slot of the shell part has several connecting blocks therein, which are each connected to two lateral sides of the slot, for increasing capability of the shell part to bear force; the face part is closely fitted in the front opening of the shell part, and propped by means of the strengthening pieces in the holding hollowness; and, a kind of elastic shock absorbing material is injected in the holding hollowness of the shell part to prop the face part.

Abstract: A putter head includes a first half member, a second half member, and an insert. The first half body includes a first metal, and has a face surface on a front face. The second half body includes a second metal, which is higher in specific gravity than the first metal, and is attached to the forward half body. The insert is disposed inside the first half body to be along the face surface and includes one selected from a group consisting of a synthetic resin and a rubber.

Abstract: A golf club head includes a golf club head body and a complex hosel. The golf club head body includes a neck portion located at a heel-side portion, and a connecting portion formed on the neck portion. The complex hosel is constructed from a one-piece tubular member made from a two-layer or multi-layer complex substrate combined along a longitudinal direction such that the complex hosel has at least one first tubular, segmental wall and at least one second tubular, segmental wall that possess two different characteristics of vibrational absorbability and elastic deformability. The complex hosel can provide different vibrational absorbability and elastic deformability characteristics in different radial directions of the neck portion of the golf club head body when assembled.

Abstract: A golf club head includes a golf club head body and a striking plate connected thereto. The striking plate includes a first plate, a second plate and elastically deformable spaces. The first plate has a front surface to provide a striking surface, and a rear surface to provide a first connecting surface. The second plate has a front surface to provide a second connecting surface, and a rear surface. The first connecting surface of the first plate is attached to the second connecting surface of the second plate to form the striking plate which is connected to a front portion of the golf club head body. The elastically deformable spaces are formed between the first connecting surface of the first plate and the second connecting surface of the second plate.

Abstract: A golf club is provided having improved playing characteristics based upon a multiple material construction. This construction involves a club body in combination with a face insert that defines a hollow channel therebetween. This hollow channel is substantially filled with a heterogeneous viscoelastic material, such as urethane containing tungsten powder. The heterogeneous material is formulated such that the density of the material is varied based upon the location of that material within the hollow channel of the golf club head. In particular, lower density portions of the material are located near the top of the club head, and higher density portions are located near the bottom or sole of the club head. This moves the center of gravity of the club head downward and rearward, yielding improved feel and improved weight distribution and enhancing performance of the club.

Abstract: The iron golf club head (20) of the present invention is preferably composed of three main components: a main body (22), a central member (24) and a mass member (25). The Mass member (25) is preferably composed of a high density material such as a nickel-tungsten alloy. The central member (24) is preferably composed of a lightweight, non-metal material. The main body (22) is preferably composed of a titanium alloy material. The iron golf club head (20) preferably has high moments of inertia Izz and Ixx, and a low center of gravity.

Abstract: A golf club head having a good impact-absorbing property improved to provide a good hitting feel without deteriorating the repulsion property, which includes a metallic face member 8 including at least a part of face F, and a metallic head body 9 to be joined with face member 8, wherein the face member 8 has back surface 8b, and the head body 9 has receiving surface 12 contacting a periphery 8be of the back surface 8b, and fold-back portion 14 which extends backward of the head from the receiving surface 12 and is folded toward the head center without contacting the back surface 8b so that it has opposite surface 18 facing the back surface 8b and it forms space 13 between them, and wherein at least one impact-absorbing member 15 made of an elastic material is disposed in the space 18 such that a front portion 15a thereof is in contact with the back surface 8b, a rear portion 15b thereof is in contact with the opposite surface 18 and a middle portion thereof between them extends in the space 13 without contact

Abstract: A golf club head includes a body, a striking plate engaged with the body and including a front side for striking a golf ball, and at least one gas cushion mounted in the body and behind the striking plate. The gas cushion includes a bladder defining a gas chamber. The bladder is made of an elastomeric material. The gas chamber is filled with at least a gas to provide said at least one gas cushion with compressibility.

Abstract: A method for producing a golf club head has a molding step, an injecting step, a surface finishing step and a sealing step. The molding step has obtaining a base and a striking faceplate and punching a recess formed in a front surface of the base and having an opening receiving the striking faceplate, a window and multiple through holes in the base. The injecting step has blocking the window by a stopper and injecting vibration-absorbing material into the recess. The surface finishing step has removing the stopper when the vibration-absorbing material is foamed and molded and then mounting at least one sealing element to block up the at least one through hole. The sealing step has adhering a transparent panel on the recess to seal the window to obtain a golf club head with vibration-absorbing effect. Users can see the vibration-absorbing material from the transparent panel.

Abstract: A golf club head includes a body having at least one assembling hole in which a weight is engaged. The weight includes a head and a shank, and at least one engaging surface is provided on the weight for engaging with the assembling hole. At least one vibration absorbing section is partially formed on the engaging surface to provide enhanced vibration absorbing effect while providing various visual presentation.

Abstract: A golf club head has a head main body, an elastic body, and a lid body. The head main body has a back surface and a sole surface, and defines a recess portion depressed from one of the back surface and the sole surface. The elastic body is fixed in the recess portion in an compressed state and defines an empty portion. The lid body is attached to an entrance portion of the recess portion.

Abstract: A golf club head includes a head body having a front opening, and a single-piece striking plate member covering the front opening and having a striking face with a striking zone, and a back face formed with an annular reinforcing rib behind the striking zone and corresponding in position to the striking zone, a central boss formed concentrically within the annular reinforcing rib, and a plurality of angularly spaced-apart diametral reinforcing ribs extending diametrically through the central boss and the annular reinforcing rib. The annular reinforcing rib and the diametral reinforcing ribs cooperate to define a plurality of receiving grooves. A plurality of vibration-absorbing elements are disposed respectively in the receiving grooves.

Abstract: A back recess balance weight structure for golf club heads is located on a back side of a golf club head relative to the striking face and includes a back recess body and a sealing cap. The back recess body has a back recess with a plurality of cavities formed therein. The sealing cap covers the back recess by bonding. The structure consists of simple elements. The sealing cap is made from a material of a smaller specific gravity to move the weight of the club head to the optimal position. The adhesive can absorb shock and vibration to form a tight sealing of the sealing cap and the back recess body. Thereby optimal stability and striking accuracy can be achieved during swinging of the golf club.

Abstract: A golf club head has a face insert that is supported from beneath by a substrate composed of a plurality of elongate rod elements arranged in a parallel closely packed array. Because the face insert is made of a single material, the resiliency of the face insert itself does not vary across the front surface of the face insert; however, the effective resiliency of the face insert may be varied by varying the resiliency of the substrate. This is accomplished by selecting different materials and/or different overall lengths for the rod elements that comprise the substrate. Use of a substrate comprising a plurality of rod elements permits the effective resiliency of the face insert to be varied without varying the face material.

Abstract: Disclosed herein are muscle-back iron golf clubs that have improved mass qualities to provide higher rotational moments of inertia and lower center of gravity while retaining the workability of muscle-back irons and the size, shape and dimensions preferred by tour players and low handicap players.

Abstract: A golf club head made of metal includes a face surface, a back surface, and an elastic body. Plural hollow portions are defined between the face surface and the back surface and are arranged in an upper and lower direction. The elastic body is filled in the lowermost hollow portion. The plural hollow portions are defined in a lower portion of the golf club head.

Abstract: A shock-absorbing golf club head has a head body, an inner cap, a faceplate and a shock-absorbing core. The head body has an open front, an air cavity and a core cavity. The core cavity has a cavity shoulder. The inner cap is mounted securely on the cavity shoulder of the core cavity. The faceplate is mounted in the open front of the head body and is separated from the inner cap. The shock-absorbing golf club head effectively absorbs shock and generates a sound when striking a golfball.

Abstract: A metal wood golf club head adapted for attachment to a shaft, comprising of a body portion and a crown portion, each portion constructed of a different density material. Combining a high-density material in the body portion, with a low-density material in the crown portion, creates an ultra-low center of gravity relative to the geometric face center, resulting in higher launch angles and spin rate ratios. The material for the crown portion is preferably a composite. A vibration dampening gasket is disposed between the ledge and lip sections of the body and crown respectively.

Abstract: The present invention relates to a golf head and a welding method thereof. In the welding method of the invention, a metal plate is disposed in an opening of a metal body, wherein the shape of the metal plate matches that of the opening. Subsequently, a first electrode and a second electrode contact a back surface of the metal body and a top surface of the metal plate respectively, wherein the shapes of the first electrode and the second electrode match those of the back surface and the top surface respectively. Finally, the first electrode and the second electrode output a current so as to weld the metal body and the metal plate by a resistance welding process. By utilizing the welding method, the welding speed can be significantly increased so as to increase the yield, and the welded joint can be stronger. Furthermore, the welded golf head has a high flatness so that the following manufacturing cost can be decreased.

Abstract: A golf club head includes a body having a a heel end, a toe end, and a front surface extending between the heel and toe ends. A face plate is coupled to the body by a piston assembly through a fluid. The golf club head is tuned by changing the viscosity of the fluid.

Abstract: Disclosed is a golf club head including a faceplate portion and a main body constituting a remaining part of the scented golf club head. An insert capable of emitting fragrance over a predetermined period of time is provided within a cavity or an opening formed in the main body.

Abstract: A golf club head includes a body with a striking plate that has a front side for striking a golf ball and a rear side. A vibration-absorbing area is defined behind the striking plate. At least one gas cushion is mounted in the vibration-absorbing area and includes a bladder defining a gas chamber. The bladder is made of an elastomeric material, and the gas chamber is filled with at least one gas to provide the at least one gas cushion with compressibility. The at least one gas cushion includes an engaging section with which at least one weight member is engaged. The at least one weight member and the at least one gas cushion together adjust a center of gravity of the golf club head while absorbing residual vibrations generated as a result of striking a golf ball.

Abstract: A method and apparatus for beneficially controlling the impact between a club head and a golf ball are described. A golf club head (such as on a driver, iron, or putter) has a body and a face mechanically supported thereon, wherein the face and body are elastically tailored to create beneficial face motion and deformation at impact. The tailored clubhead compliance is shown to influence impact properties and resulting ball parameters such as speed, direction and spin rates resulting from the impact event between the face of the club and the golf ball. Several embodiments are presented for controlling ball spin through design of the elastic and dynamic response of the face and body under impact loading.

Abstract: A golf club head includes a body, a striking plate engaged with the body and including a front side for striking a golf ball, and at least one gas cushion mounted in the body and behind the striking plate. The gas cushion includes a bladder defining a gas chamber. The bladder is made of an elastomeric material. The gas chamber is filled with at least a gas to provide said at least one gas cushion with compressibility.

Abstract: A golf club head has a cavity for receiving a face insert. A first face insert, which is disposed in the cavity, has a front surface that is contoured. A second face insert composed of multiple rod elements is disposed in the cavity on top of the first face insert so that the rod elements are supported by the contoured front surface of the first face insert. Because the first face insert supporting the rod elements is contoured, the individual rod elements are of different lengths and, therefore, exhibit different dynamic responses when striking a golf ball, even when the rod elements are made of the same material.

Abstract: A set of iron-type golf clubs includes long irons with channel back configurations and short irons with cavity back configurations. The rear face configurations transition from channel backs through to pure cavity backs for increased performance continuum for the set. Additional design parameters for the set may also be systematically varied through the set, such as groove type and depth, loft angle, cavity volume, hitting face roughness, and sole width. At least one of the clubs of the set includes a sandwich-type construction for the hitting face having a dampening element disposed between a hitting face insert and a lightweight reinforcing core. In one embodiment, at least one club head is oversized.

Abstract: To provide a golf club head in which a sole portion has a high rigidity. A weight material is mounted near a central part of the sole portion in the fore-to-aft direction, and a rib extends in the toe-to-heel direction. Since the sole portion has high rigidity in the toe-to-heel direction, there is less deformation of the head in the toe-to-heel direction when hitting the ball, thereby suppressing the vibration of the sole portion. An elastic body is filled in a recess portion and closely contacted with the weight material, whereby the vibration of the sole portion is absorbed by the elastic body.

Abstract: A golf club head including filler material contained in a bladder disposed in a cavity that is formed in a club head body. A face plate is attached to the body and is arranged for impacting a golf ball. The bladder is located behind the face plate. When the club head strikes a golf ball on the face plate, the filler material dampens vibration which results. In one embodiment, the filler material is compressed air. In other embodiments, the filler material is a gel-like material or a granular material such as sand.

Abstract: A method for tuning a golf club head where the golf club head includes a body having a front surface, a back surface, a heel end, a toe end, a sole extending between lower portions of the heel and the toe ends, and a top rail extending between upper portions of the heel and toe ends. A face is coupled to the body through a rheological fluid. The golf club head is tuned by changing the viscosity of the rheological fluid.

Abstract: A wood-type golf club head (40) having a major body (50), a striking plate insert (55) and a minor body (60) is disclosed herein. The major body (50) is composed of a metal material and has a front wall section (72), a return section (74), a sole section (76), a ribbon section (78) and a ledge portion (80). The minor body (50) is preferably composed of a low density material and has a crown section (62) and a ribbon section (64). The striking plate insert (55) is composed of a metal material. An epoxy-based composition (200) is placed at a face-sole junction (205) to lower the amplitude of the sound of the golf club head (40) during impact with a golf ball.

Abstract: A golf club head includes a striking plate, a golf club head body and a plurality of annular flexible portions. In assembling, the striking plate mechanically connects to a front side of the golf club head body. The golf club head body forms a crown portion, a sole portion, a toe portion, a heel portion and a side portion to constitute a body member. The annular flexible portions are provided on an inner surface of the golf club head body. Thereby, the annular flexible portions can increase an elastic deformation of the golf club head body.

Abstract: A multi-piece iron-type golf club head with a substantial weight member is disclosed and claimed. The golf club head includes a plurality of body members. A first body member includes a face, a rear surface, and a hosel. A viscoelastic material is attached to the rear surface, and a second body member is attached to the viscoelastic material. The second body member, which may be a weight member, has a substantially larger mass than in known golf clubs.

Abstract: A golf club head having an undercut is disclosed. The club head includes a body defining a striking face, a top line, a sole, a back, a heel, and a toe. The back contains a cavity that extends in a direction substantially perpendicular to the face. A recesses is provided within the cavity, with the recess extending away from the cavity and toward the sole. The recess causes more of the club head mass to be oriented towards the perimeter of the club head. This enlarges the club sweet spot and increases the moment of inertia, producing a more forgiving club. The recess may have a varying depth and/or a varying draft angle. A rear wall of the recess may be provided with a cutout to further reposition mass toward the club head perimeter. An insert, such as a vibration dampening member, may be provided within the recess. The insert may contain secondary inserts, such as weight members, therein in strategic locations. The insert may completely fill the recess, or may fill only a portion thereof.

Abstract: A set of iron-type golf clubs includes long irons with channel back configurations and short irons with cavity back configurations. The rear face configurations transition from channel backs through to pure cavity backs for increased performance continuum for the set. Additional design parameters for the set may also be systematically varied through the set, such as groove type and depth, loft angle, cavity volume, hitting face roughness, and sole width. At least one of the clubs of the set includes a sandwich-type construction for the hitting face having a dampening element disposed between a hitting face insert and a lightweight reinforcing core. In one embodiment, at least one club head is oversized.

Abstract: A golf club (40) having a club head (42) with a face component (60), an aft body (61) and a gasket (300) is disclosed herein. The face component (60) has a striking plate portion (72) and a return portion (74). The aft-body (61) is preferably composed of a crown portion (62), a sole portion (64) and optionally a ribbon section (90). The gasket (300) provides an interface between the face (60) and the aft-body (61) that reduces corrosion and improves manufacturing costs of the club head. The club head (42) preferably has a volume in the range of 290 cubic centimeters to 600 cubic centimeters, a weight in the range of 165 grams to 300 grams, and a striking plate portion (72) surface area in the range of 4.00 square inches to 7.50 square inches.

Abstract: A metal wood golf club head adapted for attachment to a shaft, comprising of a body portion and a crown portion, each portion constructed of a different density material. Combining a high-density material in the body portion, with a low-density material in the crown portion, creates an ultra-low center of gravity relative to the geometric face center, resulting in higher launch angles and spin rate ratios. The material for the crown portion is preferably a composite. The crown portion comprises an inner surface layer of a vibration dampening and acoustical attenuating material. The transverse surfaces of the crown and body portions creating a gap that is filled with a shock absorption material such as putty or a rubber based structural adhesive.

Abstract: A golf club head having a head body, a face plate fixedly attached to the front surface of the head body, a weight fixedly attached to the front surface of the sole portion of the head body, and an elastic body charged into a first recess portion of the golf club head. The elastic body is compressed to stick fast to the rear surface of the face plate. The lower portion of the head body having first and second recess portions is formed as a bulging portion bulging at the rear of the head body. The JIS C hardness of the elastic body is preferably 15–80, more preferably 18–70, most preferably 20–60.

Abstract: A golf club head includes a body having a front surface, a back surface, a heel end, a toe end, a sole extending between lower portions of the heel and the toe ends, and a top rail extending between upper portions of the heel and toe ends. A face is coupled to the body through a rheological fluid. The golf club head is tuned by changing the viscosity of the rheological fluid.

Abstract: A set of iron-type golf clubs includes long irons with channel back configurations and short irons with cavity back configurations. The rear face configurations transition from channel backs through to pure cavity backs for increased performance continuum for the set. Additional design parameters for the set may also be systematically varied through the set, such as groove type and depth, loft angle, cavity volume, hitting face roughness, and sole width. At least one of the clubs of the set includes a sandwich-type construction for the hitting face having a dampening element disposed between a hitting face insert and a lightweight reinforcing core. In one embodiment, at least one club head is oversized.

Abstract: A set of iron-type golf clubs includes long irons with channel back configurations and short irons with cavity back configurations. The rear face configurations transition from channel backs through to pure cavity backs for increased performance continuum for the set. Additional design parameters for the set may also be systematically varied through the set, such as groove type and depth, loft angle, cavity volume, hitting face roughness, and sole width. At least one of the clubs of the set includes a sandwich-type construction for the hitting face having a dampening element disposed between a hitting face insert and a lightweight reinforcing core. In one embodiment, at least one club head is oversized.

Abstract: A golf club head has a face insert that is supported from beneath by a substrate composed of a plurality of elongate rod elements arranged in a parallel closely packed array. Because the face insert is made of a single material, the resiliency of the face insert itself does not vary across the front surface of the face insert; however, the effective resiliency of the face insert may be varied by varying the resiliency of the substrate. This is accomplished by selecting different materials and/or different overall lengths for the rod elements that comprise the substrate. Use of a substrate comprising a plurality of rod elements permits the effective resiliency of the face insert to be varied without varying the face material.

Abstract: A golf club head that allows a user to customize the location of the center of gravity. The golf club head comprises a club head having a hollow cavity with a weighting port. The weighting port allows a user to place weighting material inside the hollow cavity, customizing the location of the center of gravity, the swing weight, the total weight, and the balance of the golf club.

Abstract: A set of iron-type golf clubs includes long irons with channel back configurations and short irons with cavity back configurations. The rear face configurations transition from channel backs through to pure cavity backs for increased performance continuum for the set. Additional design parameters for the set may also be systematically varied through the set, such as groove type and depth, loft angle, cavity volume, hitting face roughness, and sole width. At least one of the clubs of the set includes a sandwich-type construction for the hitting face having a dampening element disposed between a hitting face insert and a lightweight reinforcing core. In one embodiment, at least one club head is oversized.

Abstract: A shock-absorbing golf club head has a head body, a faceplate and a shock-absorbing core. The head body has a crown, a sole, a toe, a shank, a rear, an open front, a core cavity and an air outlet. The open front has an inner shoulder. The core cavity is defined in the head body and communicates with the open front. The air outlet is defined through the head body, and communicates with the core cavity. The faceplate is mounted securely on the inner shoulder of the open front of the head body. The shock-absorbing core is mounted in the core cavity. The air in the core cavity is discharged to the ambient atmosphere through the air outlet when a foaming agent serving as the shock-absorbing core foams inside the core cavity.