Abstract: A golf club head includes: a head body including a crown portion having a plurality of openings, a face portion, a toe portion, a heel portion and a sole portion; a crown part mounted to the head body so as to close the openings, and a support portion provided between the openings for supporting the crown part. The support portion is X-shaped, for example.

Abstract: A golf club head includes a front body, a middle body, a back body integrally. The middle body is disposed between the front body and the back body. The middle body includes a middle crown constituting a middle portion of a crown portion in back and forth directions, a middle side constituting middle portions of both side surfaces on a toe side and a heel side in the back and forth directions, a middle sole constituting a middle portion of a sole portion in the back and forth directions. The middle body may include aluminum alloy. The front body and the back body may include titanium alloy.

Abstract: A golf club head composed of a forged metal material has a striking surface that is supported by diagonal stiffening regions that extend from a central region of the face toward the heel-sole quadrant, heel-crown quadrant, toe-crown quadrant, and toe-sole quadrants of the face. The diagonal stiffening regions are smoothly contoured to blend into the back surface of the face so as to avoid any stress concentrations. By extending the stiffening regions diagonally from the center of the club face to the four quadrants, a more uniform stress distribution can be obtained and therefore more uniform performance. Additionally, since the diagonal stiffening regions are greater in length than vertical or horizontal stiffening region could be made, the center of the face can deflect a greater amount without exceeding the yield strength of the material and, therefore, there is a more efficient transfer of energy from the club head to the ball.

Abstract: A laminated face for a golf club head includes at least one back face connected to a front face. The laminated face is attached to a club head body to form a golf club head providing superior performance to conventional golf cub heads. In addition to other advantages, exemplary golf club head provides superior performance to conventional clubs by establishing a significantly larger area around the sweet spot where contact with a golf ball results in distances and accuracy comparable to the sweet spot. In addition, the characteristics and performance parameters of the resulting golf club do not exceed regulation limits such as the maximum COR allowed by the USGA.

Abstract: A golf includes a golf club shaft and a golf club head connected to the golf club shaft. The golf club head includes a body having a forward surface and a striking member connected to the forward surface of the body. The striking member includes predetermined properties to deflect inwardly during initial contact with a golf ball and recover outwardly as the golf ball moves away substantially synchronized with compression and expansion of the golf ball. In some embodiments, the golf club head may include a spacer or neck connecting opposing medial portions of the body and the striking member. In other embodiments, the striking member may include a first layer and a second underlying layer disposed over the body.

Abstract: A golf club head is provided having a substantially increased sweet spot across its striking face. A preferred embodiment includes a striking plate with a substantially annular area on a rear surface that has an increased thickness or stiffness surrounding the central region of the balance point of the striking surface. The central region of the striking plate has a generally reduced thickness or stiffness that is less than the maximum thickness or stiffness values found at the third and fourth thickness or stiffness profiles of the substantially annular area but greater than a minimum thickness or stiffness values at the peripheral area. The first and second thickness or stiffness profiles of the substantially annular area have thicknesses or stiffnesses less than the maximum values of the third and fourth thickness or stiffness profiles but more than the minimum thickness or stiffness values at the periphery.

Abstract: A golf clubhead containing a main body and a face member, the main body including a main shell portion having a hollow and a tubular inner extension of a hosel protruding in the hollow, and at least a part of the tubular inner extension separating from the inner surface of the main shell portion. A method of making the golf clubhead which includes making a first lost form corresponding to the main shell portion, making a second lost form corresponding to the tubular inner extension, fixing the second lost form to the first lost form to make a third lost form corresponding to the main body, making a casting mold using the third lost form, and casting a metallic material into the main body using the casting mold.

Abstract: A hollow golf club head made of metal has a face portion made of a titanium alloy, a crown portion, a sole portion, a toe-side side portion, a back-side side portion, a heel-side side portion, and a hosel portion. Grooves are provided in the crown portion so as to extend in the direction connecting the heel side and the toe side. Ribs are provided in the sole portion so as to extend in the direction connecting the face portion and the back-side side portion.

Abstract: As the club number increases so that the loft angle is larger, the center-of-gravity height HG of each head becomes larger, and the center-of-gravity depth ZG thereof becomes smaller. Each head is hollow, and a face portion becomes thicker in its lower portion. The back bottom thickness T is smaller in an iron shorter in club length.

Abstract: A golf club driver head comprised of a hollow body shell of a standard golf club driver shape. This shape has a front impact face plate, a bottom sole plate, a top crown shell, a curved rear wall, a heel, a toe, and a cylindrical hosel, which extends from the face, crown, and heel junction to attach to a shaft. This body is composed completely from cast or machined billet magnesium alloy. The body shell thickness is generally thicker than that in equivalent locations of metallic and other alloy driver heads of the same head volume. The face plate is thicker than that in the remainder of the body to provide a lower deflection surface, improve durability, and to maintain a forward center of gravity. The result of such a large head is a much larger hitting sweet spot and corresponding increased driver accuracy and control.

Abstract: A cavity back golf club head having a bridge member is disclosed. The bridge member extends across a first rear cavity connecting a heel and a toe of the golf club head to control the trajectory of a golf ball. For the longer iron clubs, a wall extending from the sole portion of the cavity back golf club head to the bridge member defines a second cavity to further influence the trajectory of the golf ball.

Abstract: The present invention discloses a golf putter head with vertical and horizontal cavities.

Abstract: An iron golf club head includes a head body and a front face plate made of a highly resilient metal which is attached to a front of the head body. A thick-walled portion is formed in the back of the lower central part of the front face plate. Multiple narrow ribs are formed to radially extend from the thick-walled portion toward the upper and lateral peripheral parts of the front face plate, and the ribs have a thickness not substantially exceeding the thickness of the thick-walled portion. Broad thin-walled portions arc formed between the adjacent ribs.

Abstract: A reinforced golf club head includes a reinforcing plate, a curved sole plate, a striking plate and a crown plate. The reinforcing plate is welded to the sole plate in a lip area adjacent to the striking plate before the sole plate, striking plate and crown plate are joined together, so as to strengthen the sole plate and hence allow the lip area to withstand a relative large stress resulted from impact produced during striking a ball.

Abstract: An golf club head is provided, having enhanced sound and feel characteristics. The club head has a hollow main body including a ball-striking face, a sole, a crown, a hosel, and a side portion extending rearwardly from the face. The body further includes a heel region adjacent to the hosel and a toe region opposing the heel region, and it defines a volume of at least 100 cc. The club head further includes a stiffening member disposed within the body and attached to both the sole and the crown. The member is spaced apart from the striking face and disposed within the body in a region having a first zone extending less than half the distance from the heel region to the toe region and a second zone extending less than half the distance from a rearmost point, thereby forming a local stiffness zone in the body to influence vibration modes and acoustic properties of the club head in a prescribed manner.

Abstract: A golf club head has a hollow body with a front, striking face, a rear face, an upper face, a heel and a toe, and an open lower end, the body having an internal cavity. At least one filler member of solid cork or synthetic cork material cut to match the shape and dimensions of at least part of the cavity is positioned in the cavity, and a sole plate is secured over the open lower end of the body.

Abstract: A reinforced golf club head includes a reinforcing plate, a curved sole plate, a striking plate and a crown plate. The reinforcing plate is welded to the sole plate in a lip area adjacent to the striking plate before the sole plate, striking plate and crown plate are joined together, so as to strengthen the sole plate and hence allow the lip area to withstand a relative large stress resulted from impact produced during striking a ball.

Abstract: A golf club head has a hollow body with a front, striking face, a rear face, an upper face, a heel and a toe, and an open lower end, the body having an internal cavity. At least one filler member of solid cork or synthetic cork material cut to match the shape and dimensions of at least part of the cavity is positioned in the cavity, and a sole plate is secured over the open lower end of the body.

Abstract: The present invention relates to a golf club having a golf club head with a channel on the head. The golf club head may be a putter-type club head that is used to putt the golf ball on a green. The use of the channel on the club head provides a mass distribution that can result in a high moment of inertia so that the club head resists twisting in the player's hand when the club head strikes a golf ball. The channel also assists a player in aligning the club head to strike a golf ball. The channel may be located on the upper face of the club head so that the player can see the channel when addressing a golf ball with the golf club. The channel extends from a front, strike face of the club head to a rear face of the club head and is preferably aligned with an axis that corresponds to the desired direction of travel of a golf ball that is struck with the club head.

Abstract: The present invention provides an iron-type golf club head having a bridge member across a cavity on its rear surface, which member influences the trajectory of a golf ball struck by the club head. By altering the bridge member orientation across the cavity on the rear surface, the club head can be made to propel a ball in various directions. Thus, the trajectory of golf balls struck by the club head can be high, low, rightward, leftward, or combinations thereof.

Abstract: A golf club head (20) having a body (22), a striking plate (24) and a frame (26) is disclosed herein. The body (22) is preferably composed of a low-density material. The frame (26) has a plurality of arms (42a-d) for attachment to the striking plate (24). The golf club head (20) preferably has a volume between 300 cubic centimeters and 500 cubic centimeters. The golf club head (20) preferably has a mass between 105 grams and 300 grams.

Abstract: A metallic golf club head includes a body and impact face defining a cavity therein, and a hosel for attachment to a shaft. The body includes a sole portion having a pair of insert members, preferably in the shape of triangular wedges, which protrude through into the cavity. The sole portion includes a hexahedron shaped bridge weight spanning across and connecting the members and creating an underpass therein. The bridge weight of a size and height for altering the weight distribution and therefore the center of gravity of the club head without impeding the acoustical properties of the club head.

Abstract: A golf club head includes a body with a top wall, a bottom wall, and a front wall arranged for impacting a golf ball. The front wall has an inner surface and an outer surface. The front wall varies in thickness and has a bulging area of increased thickness on its inner surface. The bulging area of increased thickness includes a generally ring shaped mass that projects rearwardly from the front wall. A generally cone shaped mass, that also projects rearwardly from the front wall, may be located inside the ring shaped mass.

Abstract: A metallic golf club head is provided on the inner surface of the crown portion and/or the inner surface of the sole portion with resonance controlling lines for improving ball hitting sounds, the resonance controlling lines protrude from the inner surface and extend substantially normally to the face portion.

Abstract: Head (1) of a golf club of the “wood” or “iron” type, having a wall forming the striking face (2), at least one wall adjacent the wall forming the striking face (2), namely in particular the wall of the sole (3), and which also comprises an elastic leaf (12) one end (13) of which is fixed to one of the walls (6) adjacent the wall forming the striking face (2), and the free other end (14) of which presses the preload against the back face (11) of the wall of the striking face (2).

Abstract: A novel golf club head for increasing the driving distance and the accuracy of the flying direction of a golf ball includes a body shell, a faceplate that is held on the body shell for striking the golf ball, and internal elements mounted in the body shell for reinforcing the faceplate. The thickness of the club face is reduced by using titanium as a head material. Connection of the sole and crown of the head with three wings of titanium reinforcements as the inner head structure of this invention reinforces a spring-like property to the face plate allowing the ball to repel off the clubface faster, with a bouncining effect. The loss of power is minimized and remained within the clubface. The speed and flying distance of the golf ball impacted with the head of this invention increased drastically. Accuracy of the flying direction is thus increased.

Abstract: There is provided a golf club head having a face plate of high strength and high resilience and having an excellent directional stability of the ball trajectory. The golf club head comprises a thick-walled portion 3 at the center of the face plate 2, at least four narrow ribs 4a and 4b, each formed with thickness not substantially exceeding the thickness of the thick-walled portion and extending radially from the thick-walled portion toward the perimeter of the face plate, and thin-walled portions 5 formed between said thick-walled portion and said narrow ribs.

Abstract: A metal wood golf club head adapted for attachment to a shaft is disclosed, including a shell defining a body and further including a face. The face of the club head has exterior and interior surfaces disposed such that the exterior surface has a vertical roll radius that is less than the vertical roll radius of the interior surface. The face may also have a horizontal bulge radius of the exterior surface that is less than the horizontal bulge radius of the interior surface. A central thickened region may be provided on the interior surface.

Abstract: A golf club head which comprises a face portion defining a face for hitting a golf ball, and a side portion between a crown portion and a sole portion, extending from a toe-side edge of the face portion to a heel-side edge of the face portion through the back face of the head, wherein the face portion is composed of a face plate and a face side part on one of or each of the toe side and heel side of the face plate, and the face side part is formed integrally with the side portion, but the face plate is formed separately from the face side part and welded to the face side part. The ratio of the area of the face side part to the area of the face plate is preferably set in a range of from 0.05 to 0.2.

Abstract: A hollow golf club head made of metal has a face portion made of a titanium alloy, a crown portion, a sole portion, a toe-side side portion, a back-side side portion, a heel-side side portion, and a hosel portion. Grooves are provided in the crown portion so as to extend in the direction connecting the heel side and the toe side. Ribs are provided in the sole portion so as to extend in the direction connecting the face portion and the back-side side portion.

Abstract: A golf club head comprises a hollow body having a cavity, a plurality of rib-like walls provided on the inner surface of the hollow body so as to extend backward from a position near the face portion, and a sound bar disposed behind the face portion so as to extend along the back face of the face portion. A method of making a golf club head comprises making a wax model of the hollow main body having an opening, wherein in order to prevent deformation of the wax model during making a casting mold, the wax model is provided with a brace which extends across the opening and protruding walls which are disposed on the inner surface of the wax model and extend backwards from the opening.

Abstract: A golf club head adapted for attachment to a shaft is provided. The head includes a first portion that forms an integral face and neck, with the neck having a keyed section. A second portion of the club head provides a body with a crown region and a sole region, the crown region including a keyway. A third portion is also provided in the form of a hosel tube with a top end being configured and dimensioned to receive the shaft. The hosel tube is received in the neck and fixed thereto. The first portion is fixed to the body to form a cavity, with the keyed section mating with the keyway.

Abstract: A golf club including a shaft and a club head coupled to the shaft. The club head includes a strike face, a shell defining an interior volume and a skeletal structure. The skeletal structure advantageously comprises a plurality of elongate skeletal members and a weight substantially entirely supported by the skeletal structure, wherein the weight and the skeletal structure collectively comprise at least 30% of the entire weight of the club head.

Abstract: A golf club having an inertia capsule for supporting the strike face of the club, the inertia capsule having a novel air relief channel that is partially filled with mercury and inserted in a hollow club head to transmit ball impact to transition curves cast into the club face uniformly across the club face. A feature of the inertia capsule is that it is configured to be selectively, partially filled with mercury fluid for imparting controlled force against distribution curves cast in the club face. The inertia capsule is supported in the interior chamber by a pair of saddle members.

Abstract: A golf clubhead comprises a face portion having a back surface which is provided around a center region with at least two annular grooves so that the face portion is provided with at least two annular thin parts each being thinner than the center region and at least one rib part between the thin parts, whereby the rebound performance and durability of the face portion can be improved.

Abstract: A golf club having an inertia capsule for supporting the strike face of the club, said inertia capsule inertia capsule having a novel air relief channel that is partially filled with mercury and inserted in a hollow club head to transmit ball impact at transition curves cast into the club face a the “sweet spot” uniformly across the club face. A feature of the inertia capsule is that it is configured to be selectively partially filled with mercury fluid for imparting controlled force against distribution curves cast in the strike face. The inertia capsule is supported in said interior chamber by a pair of saddle members.

Abstract: An improved golf driver club head wherein each driver club head has a tensioning device, which places the peripheral/outer structure of the club head in compression; thereby, resulting in a stronger, more rigid club head structure. In the preferred embodiment, the tensioning device comprises an elongated cylindrical member having respective end members. The top and bottom surfaces of the golf club head are each provided with a cylindrical depression or recess and an aperture or passage at the lower end of the depression. The passages are just large enough to accommodate the tensioning device, but are too small to pass the respective end members. During club head manufacture, the length of the device is selected to apply a compressive force between the head surfaces. Fine adjustment is accommodated by a threaded end member. The actual compression force may be selected to yield the best performance depending on the geometry, structure and material of the club head.

Abstract: A golf club head is disclosed, which enables a low center of gravity to be achieved without spoiling appearance of the head and reducing strength thereof, and thus enables a carry to be increased. This golf club head has a hollow structure, and includes an opening in a crown portion and a plate member fixed to the opening. The plate member is made of a material having a specific strength of 294 N/mm2 or higher. For example, this head includes a volume equal to or more than 350 cc, a center-of-gravity retreating amount GR from a shaft axis equal to or more than 15 mm, and a center-of-gravity position ratio GH/FH equal to or lower than 0.61. Here, the ratio GH/FH is calculated from a maximum height FH of a face surface and a center-of-gravity height GH on the face surface.

Abstract: A metal wood golf club head adapted for attachment to a shaft is disclosed, including a shell defining a body and further including a face. The face of the club head has exterior and interior surfaces disposed such that the exterior surface has a vertical roll radius that is less than the vertical roll radius of the interior surface. The face may also have a horizontal bulge radius of the exterior surface that is less than the horizontal bulge radius of the interior surface. A central thickened region may be provided on the interior surface.

Abstract: A golf club head is composed of elastic substructures having moderate elasticity and consisting of a face, outer shell, and inner structure in which said elastic substructures that cooperate so as to provide larger impulses to the ball at impact, due to combined elastic properties of the club face for hits at all locations on the face. This allows better distance of shots when loft angle and other design details are appropriately chosen. The structure also minimizes variations of angular orientation of the face surface at the point of impact for all such hits. The elastic substructures can take several forms such as an internal elastic support around the periphery of the face structure, an internal support for the central part of the face structure, and an elastic structure attached to the front side of the face structure, an elastic outer shell, and their combinations.

Abstract: A golf club head with a body having a ball striking zone with an outer face for contacting a golf ball and an inner face. The body further having a web integral with the inner face of the striking zone to reinforce the striking zone. The integral web having a hub and a plurality of spokes radially extending from the hub. The golf club head is made from a composite resin, formed by injection molding.

Abstract: An improved golf driver club head wherein each driver club head has a tensioning device which places the peripheral/outer structure of the club head in compression thereby resulting in a stronger more rigid club head structure. This is accomplished by affixing the tensioning device to the crown (top) surface of the club head and to the sole (bottom) surface of the metal head. The device is affixed to the two surfaces of the club head and is pre-tensioned. The tensioning may be accomplished by compressing the two club head surfaces together then affixing the device to the opposed surfaces so that the surfaces are held in state of relative compression. Another way this can be accomplished is to affix the device to the two club head surfaces either through a hole or boss and to adjust the device by threading, gluing or other form of fastening. In the preferred embodiment the tensioning device comprises an elongated cylindrical member having respective end members.

Abstract: An improved structure for the club head of a wooden club, characterized in that the inner lateral side of the ball impact face board of the club head is provided with a plurality of cylindrical bodies connected at one point and the cylindrical bodies are extended toward the lateral side of the club head such that the cylindrical bodies are focused at the center connection of the club head, and another one cylindrical body is extended from the center connection to the bottom edge of the rear board of the club head and is mounted. Thus, the ball-impact face board is provided with a strong compression, thereby allowing the swinging of the club to impact on a golf ball and the impact distance is greatly improved.

Abstract: A fairway wood type golf club having a club head with a major body and a minor body is disclosed herein. The major body is composed of a metal material and has a striking plate section, a return section, a sole section, a ribbon section and a ledge portion. The minor body is preferably composed of a composite material and has a crown section and a ribbon section. The striking plate section preferably has variable face thickness. The minor body is preferably attached by a liquid adhesive to the ledge section of the major body.

Abstract: A metal wood golf club head adapted for attachment to a shaft is disclosed, including a shell defining a body and further including a face. The face of the club head has exterior and interior surfaces disposed such that the exterior surface has a vertical roll radius that is less than the vertical roll radius of the interior surface. The face may also have a horizontal bulge radius of the exterior surface that is less than the horizontal bulge radius of the interior surface. A central thickened region may be provided on the interior surface.

Abstract: An iron type golf club head having a unique weighting, stabilizing and reinforcing configuration for the rear face of a cavity back, peripheral weight club head. At least one dominant secondary weight member is combined with at least one auxiliary reinforcing and stabilizing weight member extending from an innermost secondary weight member surface across the rear face of the rear cavity.

Abstract: A golf club head (10) of the metal wood-type is provided, wherein the sole plate (12) of the club head (10) includes a downwardly open recess (16) defined by a generally centrally located dome element (14). Internal stiffening ribs (36) may be provided within the club head to extend between the dome element (14) and a selected club head side wall, preferably such as the front or ball impact face (24) of the club head.

Abstract: A golf club head adapted for attachment to a shaft is provided. The head includes a first portion that forms an integral face and neck, with the neck having a keyed section. A second portion of the club head provides a body with a crown region and a sole region, the crown region including a keyway. A third portion is also provided in the form of a hosel tube with a top end being configured and dimensioned to receive the shaft. The hosel tube is received in the neck and fixed thereto. The first portion is fixed to the body to form a cavity, with the keyed section mating with the keyway.

Abstract: A golf club (40) having a club head (42) with a face component (60) and an aft body (61) is disclosed herein. The face component (60) has a striking plate portion (72) and a return portion (74). The aft-body (61) is composed of a crown portion (62), a sole portion (64) and optionally a ribbon section (90). The face component (60) is composed of an amorphous metal material, and the aft-body (61) is composed of a non-metal material such as a composite material or a thermoplastic material. The club head (42) 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: This golf club head is constituted by a front part 1 including a face portion 2 and a crown main portion 3, and a back part 10 forming the remaining portion of the golf club head. A metal material forming the front part 1 has lower Young's modulus than that of a metal material forming the back part 10. The front part 1 and the back part 10 are welded. The thickness of the center of the face portion 2 is larger than the thickness of the periphery thereof. The thickness of the vicinity of a highest point 3A of the crown is small.