Abstract: A golf head club has a high moment of inertia and thus produces a pleasing hitting sound. A metallic golf club head 1 having a hollow space therein includes a face member 30 provided with a face part 31, and a body member 10 provided with a sole part 11, a crown part 12, a side part 13, and ribs 20. The hollow space is defined by the inner surfaces of the face part 31, the sole part 11, the crown part 12, and the side part 13, and the wall surfaces of the ribs. The ribs 20 extend from the inner surface of the sole part 11 to the inner surface of the crown part 12, and the body member 10 is molded integrally by casting.

Abstract: A golf club head according to one or more aspects of the present invention comprises a striking surface having a face center, a crown portion, and a sole portion, four quadrants, and a linear stiffening element coupled to at least one of the crown portion and the sole portion. The linear stiffening element may extend from the heel region to the toe region of the club head. The stiffening element is disposed in at least three of the four quadrants, at an angle between 50° and 85° relative to an imaginary vertical plane oriented substantially perpendicular to the striking surface and containing the face center. The stiffening element has a survey length, the ratio of the overall width to the survey length being less than 0.97.

Abstract: A hitting face of a golf club head having improved flexural stiffness properties. In one embodiment, the hitting face is made from multiple materials. The main portion of the hitting face is a plate-like face made from a first material having a first density. A dense insert made from a second material having a second density that is greater than the first density is attached directly or indirectly to the plate-like face at or near the geometric center thereof. The dense insert increases the flexural stiffness of in a central zone of the hitting face so that a golf club head that has a larger zone of substantially uniform high initial ball speed. In another embodiment, the hitting face includes an insert that includes main plate and at least one wing extending therefrom. The insert is welded to the golf club head so that the main plate does not deflect separately from the remainder of the hitting face. The geometry of the insert controls the stiffness in the axial directions.

Abstract: A ball striking device, such as a golf club head, has a head that includes a face configured for striking a ball and a body connected to the face, the body being adapted for connection of a shaft thereto. The head may include one or more stiffening elements or other structures contacting an inner surface of the face, to provide locally increased stiffness to particular areas of the face. The stiffening element includes a chamber adapted to contain a viscous substance. The viscous substance can be selected and inserted into the chamber to create regions of increased stiffness in desired locations, leaving other regions of the face to have increased flexibility as compared to the stiffened regions.

Abstract: A ball striking device, such as a golf club head, has a head that includes a face configured for striking a ball and a body connected to the face, the body being adapted for connection of a shaft thereto. The head may include one or more stiffening elements or other structures engaging the face to provide locally increased stiffness to particular areas of the face. The stiffening element can be movable to create regions of increased stiffness in desired locations, leaving other regions of the face to have increased flexibility as compared to the stiffened regions.

Abstract: A golf club head (1) comprises a head main body (10) having a concave portion (11) formed in the face side and a face plate (20) fixed to the head main body (10). The face plate (20) is mounted on the head main body (10) such that a concave step portion (21) engages with a convex step portion (16a) of the head main body (10), and the upper edge portion, lower edge portion, and toe-side edge portion of the face plate (20) abut against edge portions (13), (14), and (15) of the head main body, respectively. The face plate (20) is laser-welded along its perimeter and fixed to the head main body (10).

Abstract: A golf club head with sound tuning composite members forming at least a portion of the surface of the golf club head is disclosed herein. The composite members being a composite layer made out of a sandwiched core layer that is interposed inside the midsection of the composite member to provide vibration damping and sound tuning characteristics.

Abstract: The present invention relates to a golf club head provided with a shell defining an inner cavity and having a face and a body. The face has a first or reinforcement portion with a first thickness and a second or remaining portion with a second thickness less than the first thickness. The reinforcement portion is located at the center of the face. In one embodiment, the exterior surface of the face defines at least one groove spaced from the center of the face.

Abstract: This invention relates generally to golf clubs or golf club heads, having an adjustable ball striking face. The golf club head includes a club head body, a ball striking face, and a brace extending from a sole of the club head body to an inner surface of the ball striking face. The brace may further include an end portion engaged with the inner surface of the ball striking face, a fixed rod located between the end portion and an inner surface of the club head at the sole, a biasing member attached to the fixed rod. The biasing member may provide a biasing force to the ball striking face such that the ball striking face is adjustable between a first direction thereby adjusting a face angle of the club head and a second direction thereby adjusting a loft angle of the club head.

Abstract: A face portion of a golf club head includes first to fourth main ribs on an inner surface of the head. The first main rib extends from a center portion of the face portion toward a crown, and the second main rib extends from the center portion toward a sole. The face portion is formed to have such a thickness that the center portion, the first main rib, and the second main rib become thinner in this order. The third and fourth main ribs extend from the center portion in outward directions of the face portion.

Abstract: A golf club head according to one or more aspects of the present invention may generally include a strike face, a top portion, a bottom portion, a heel portion, a toe portion, and a hosel having a central axis located in a first imaginary vertical plane. A discrete, at least partially curvilinear stiffening element, having generally vertical side surfaces, may be coupled to at least one of the top portion and the bottom portion to improve the dynamic-excitation response of the club head. Preferably, the stiffening element is oriented such that an imaginary horizontal line intersects at least one of the vertical surfaces at at least two points. Additionally, the stiffening element may have at least two inflection points located along a non-linear path characterized by the vertical projection of one of the side surfaces onto at least one of the bottom portion and the top portion of the club head.

Abstract: Described herein are embodiments of a golf club head having at least one rib with an external portion. For example, according to one embodiment, a wood-type golf club head includes a body that has at least one wall defining an interior cavity. The golf club head further includes at least one rib projecting from the at least one wall. The at least one rib can include an internal portion located within the interior cavity and an external portion located without the interior cavity.

Abstract: A head 2 is hollow. The head 2 has a sole part 8. The sole part 8 has a groove forming part k1 having a recessed outer surface g1 and a protruding inner surface s1. The sole part 8 has a first groove forming part k1 and a second groove forming part k1. The first groove forming part k1 and the second groove forming part k1 have a front-back directional length. A distance between the first groove forming part k1 and the second groove forming part k1 in a toe-heel direction is wider toward a back of the head. Preferably, the first groove forming part k1 and the second groove forming part k1 exist on a back of a face surface 13. Preferably, the sole part 8 has a connecting groove part r1. The connecting groove part r1 is formed by connecting a front end of the first groove forming part k1 to a front end of the second groove forming part k1 with each other.

Abstract: A golf club head with sound tuning. The golf club head includes a hollow body that defines an interior cavity and a sound tuning feature inside the hollow body. The dimensions and location of the tuning feature are selected to alter the vibration behavior of the golf club head.

Abstract: A golf club head is provided with a crown, a sole, and a continuously extending rib (X). The rib (X) is provided on an inner surface of the head. Preferably, the rib (X) is substantially parallel to a toe-heel direction. When a maximum amplitude of vibration in a first-order mode in a state where the rib (X) is removed is defined as Ma1 and an amplitude ratio with respect to the maximum amplitude Ma1 is defined as Rh (%), disposal of the rib (X) satisfies the following items (a), (b), and (c): (a) the rib (X) crosses at least one of high Rh regions having the amplitude ratio Rh of equal to or greater than 80%; (b) no region having the amplitude ratio Rh of equal to or greater than 60% exists on a toe side than the rib (X); and (c) no region having the amplitude ratio Rh of equal to or greater than 60% exists on a heel side than the rib (X).

Abstract: A hitting face of a golf club head having a location of longest characteristic time shifted away from the geometric center of the hitting face. In one embodiment, the hitting face is made from multiple materials. In another embodiment, the hitting face as a central zone that is thicker than the surrounding material. In another embodiment, a dense insert is attached directly or indirectly to a plate-like face insert at or near the geometric center of the insert. In another embodiment, the central zone of the hitting face is reinforced with ribs. In another embodiment, the central zone is elliptical with varying thickness. In this embodiment, the central zone minor axis is thinner than the major axis. The central zone is positioned within the hitting face such that the minor axis is oriented from the low heel region to the high toe region.

Abstract: A hollow golf club bead includes a sole, a crown, a skirt, and a striking face. The golf club includes a junction interconnecting the sole, crown, and skirt to the striking face, the junction including at least one stiffening member.

Abstract: A ball striking device, such as a golf club head, has a head that includes a face configured for striking a ball and a body connected to the face, the body being adapted for connection of a shaft thereto. The head may include one or more stiffening elements or other structures engaging the face to provide locally increased stiffness to particular areas of the face. The stiffening element can be movable to create regions of increased stiffness in desired locations, leaving other regions of the face to have increased flexibility as compared to the stiffened regions.

Abstract: A hollow wood-type golf club head having an increased weight budget and improved mass characteristics at minimum structural mass is disclosed. The club head has a striking face portion, a sole portion, a skirt portion, and a crown portion having a total surface area. A hosel portion joins the club head for connecting a shaft to the club head. The crown portion has a major crown portion and a minor crown portion, the major portion having greater surface area than the minor portion, and the major portion being displaced vertically lower relative to the minor crown portion. The major crown portion may have a generally concave curvature and the minor crown portion may have a generally convex curvature such that the major crown portion is in effect inverted with respect to the minor crown portion. The major crown portion may be upwardly inclined from the heel to the toe of the head. The head may exhibit a parabolic top view silhouette.

Abstract: A golf club head 1 has a face part 2, a crown part 3, a sole part 4, a side part 5, and a hosel part 6, which are formed of titanium or a titanium alloy. The golf club head 1 is formed by integrating a head body 10 and a face plate 30 with each other by welding such as laser welding or plasma welding. A thick part 20 is provided only in the central portion in the toe-heel direction of the cross corner portion between the face part 2 and the sole part 4. The width in the toe-heel direction of the thick part 20 is 20 mm or narrower. Therefore, the golf club head in accordance with the present invention can increase a carry on average even if being used by an amateur golfer who is prone to hit a ball by varied hit points across the clubface.

Abstract: At least three clubs of a set of golf clubs may have an average volume between about 75 cm3 and about 90 cm3. The transverse dimensions of the at least three clubs may progressively decrease from a highest volume club to a lowest volume club. At least one club of a set may include a constraining member in a cavity. A linear distance between a sweet spot and a center of gravity may progressively decrease from a lower lofted club to a higher lofted club within a set. At least one golf club of a set may include a face plate portion, and at least two golf clubs of the set may include a cup face portion. At least two clubs of a set may include a progressively increasing hosel length from a lowest lofted club to a highest lofted club. The strike face of at least one club of a set may include a bulge and a roll. A first club of a set may have a face thickness that is less than a face thickness of a second club of the set.

Abstract: A hitting face of a golf club head having improved flexural stiffness properties. In one embodiment, the hitting face is made from multiple materials. Each material has a different tensile modulus of elasticity, where the center of the hitting face has a much higher tensile modulus of elasticity than the surrounding portions of the hitting face. This creates a stiff center and a more easily deflected concentric portion. In another embodiment, the materials have different yield strengths, where the center of the hitting face has a very high yield strength compared to the surrounding portions of the hitting face. The hitting face may then plastically deform around its periphery, while the center retains its original shape.

Abstract: A hollow golf club head includes a sole, a crown, a skirt, and a striking face. The golf club includes a junction interconnecting the sole, crown, and skirt to the striking face, the junction including at least one stiffening member.

Abstract: A hollow golf club head with a concave portion is disclosed and claimed. The club head includes a metallic portion and a light-weight portion, which may be formed of plastic, composite, or the like. The concave portion allows the club designer to make a club head having very thin portions while still maintaining the requisite structural integrity. Convex bulges may optionally be provided to house weight inserts to enhance the playing characteristics of the golf club. The metallic portion of the club head may take on the appearance of a frame, into which several light-weight inserts are positioned. These light-weight inserts may be positioned in the crown, skirt, and sole of the club head. The club head may be formed by co-molding, eliminating the need for welding or adhesives, freeing mass to be used in more beneficial ways. The club head may be large to increase playability and forgiveness.

Abstract: Described herein are embodiments of a golf club head having at least one rib with an external portion. For example, according to one embodiment, a wood-type golf club head includes a body that has at least one wall defining an interior cavity. The golf club head further includes at least one rib projecting from the at least one wall. The at least one rib can include an internal portion located within the interior cavity and an external portion located without the interior cavity.

Abstract: There is provided a golf club head capable of increasing carry on average even if being used by an amateur golfer who is prone to hit a ball with various hit points across the clubface. A golf club head 1 has a face part 2, a crown part 3, a sole part 4, a side part 5, and a hosel part 6, which are formed of titanium or a titanium alloy. The golf club head 1 is formed by integrating a head body 10 and a face plate 30 with each other by welding such as laser welding or plasma welding. A thick part 20 is provided only in the central portion in the toe-heel direction of the cross corner portion between the face part 2 and the sole part 4. The width in the toe-heel direction of the thick part 20 is 20 mm or narrower.

Abstract: An iron-type golf club head is disclosed having a heel portion, a sole portion, a toe portion, a top-line portion, a front portion, a rear portion, and a striking face. A back wall is also disclosed in the rear portion enclosing a portion of the rear portion to create an enclosed cavity. The cavity is defined by at least a rear surface of the striking face, an inner back wall surface, and the sole portion. A plug and a filler material is located within the enclosed cavity. The filler material surrounds the plug and is configured to hold the plug in place. The plug is lighter than the filler material.

Abstract: When a length of a cross section CS1 in a face-back direction is defined as L; a point being 0.1 L from a forefront point Mz2 of the cross section and positioned on an outer surface of the sole is defined as Ma; a point being 0.

Abstract: A golf club head with reinforced crown is described herein. Other embodiments are also disclosed herein.

Abstract: Aspects of this disclosure relate to golf club heads which include a wood type golf club head body with a double wall structure that includes a ball striking face portion, which is configured to be disengaged from a rear portion of the golf club head body. Further aspects relate to a second wall portion which is configured to be disengaged from the golf club head body. Golf clubs including these club heads and methods of making such golf club and golf club heads also are provided.

Abstract: A golf club head having a crown, a sole having a length, ls, a strike face, a structural response modifying element having a constraining portion and a cantilever portion, the constraining portion extending from the sole to the crown and having a length lsc that is between about 10% to about 40% of length ls, wherein the cantilever portion extends from the constraining member toward the strike face. In another embodiment the constraining portion extends from the crown to a skirt portion of the club head, but is not connected to the strike face.

Abstract: A golf club head designed to act under impact load as a bridge comprising a face; an inertial support system; a rear structure; and a force transfer system, under impact load the force transfer system, in cooperation with the inertial support system, elongating the rear structure and controlling the bending of the face, the pattern of bending of the face being a substantially bridge-like pattern of bending or a substantially modified bridge-like pattern of bending.

Abstract: A hitting face of a golf club head having improved flexural stiffness properties. In one embodiment, the hitting face is made from multiple materials. The main portion of the hitting face is a plate-like face made from a first material having a first density. A dense insert made from a second material having a second density that is greater than the first density is attached directly or indirectly to the plate-like face at or near the geometric center thereof. The dense insert increases the flexural stiffness of in a central zone of the hitting face so that a golf club head that has a larger zone of substantially uniform high initial ball speed. In another embodiment, the hitting face includes an insert that includes main plate and at least one wing extending therefrom. The insert is welded to the golf club head so that the main plate does not deflect separately from the remainder of the hitting face. The geometry of the insert controls the stiffness in the axial directions.

Abstract: A golf club head (42) having a substantially square or rectangular body is disclosed herein. The golf club head (42) preferably has a volume ranging from 420 cubic centimeters to 470 cubic centimeters. The golf club head (42) preferably has a face component (60), a mid-body (61) and an aft-weight component (65). The golf club head (42) preferably has a moment of inertia about the Izz axis through the center of gravity of the golf club head greater than 4000 grams-centimeters squared.

Abstract: A golf club head having a hollow construction includes a face part having a ball-impacting surface and a first main rib and a second main rib disposed on the inner surface of the face part. The first main rib extends from a crown side to a sole side, and the second main rib extends from a hosel side to a toe-side part of the sole side, the first and second main ribs intersecting each other. The material thickness on a toe side of the face part, with the first main rib being the boundary, is formed so as to be thinner than the material thickness on a heel side of the face part.

Abstract: A golf head club has a high moment of inertia and thus produces a pleasing hitting sound. A metallic golf club head 1 having a hollow space therein includes a face member 30 provided with a face part 31, and a body member 10 provided with a sole part 11, a crown part 12, a side part 13, and ribs 20. The hollow space is defined by the inner surfaces of the face part 31, the sole part 11, the crown part 12, and the side part 13, and the wall surfaces of the ribs. The ribs 20 extend from the inner surface of the sole part 11 to the inner surface of the crown part 12, and the body member 10 is molded integrally by casting.

Abstract: A ball striking device, such as a golf club head, has a head that includes a face configured for striking a ball and a body connected to the face. A brace extends from an inner surface of the body or from a perimeter weight system to a contact point on the rear surface of the face. This brace may extend from the sole or a sole oriented perimeter weight member to the rear surface of the face. The brace applies force to the face (at least when the face is flexed by a threshold amount) such that the area of the face surrounding the contact point has less flexibility relative to other areas of the face located away from the contact point. The brace and club head may include structures that allow one to control and customize the force applied to the face.

Abstract: A head 2 is provided with a face 4, a crown 6, and a sole 8. The head 2 is hollow. At least a part of an inner surface of the head 2 is a metal inner surface Kn. At least one rib 20 made of a metal is provided on the metal inner surface Kn. The at least one rib 20 is a partial weld rib obtained by carrying out partial welding between the rib 20 and the metal inner surface Kn. A welded portion and an unwelded portion coexist in a longitudinal direction of the partial weld rib 20 between the metal inner surface Kn and the partial weld rib 20. Preferably, the partial welding is carried out between a side surface 24 of the partial weld rib 20 and the metal inner surface Kn. Preferably, a weld bead Bd is present on a place on which the partial welding is carried out.

Abstract: The present invention provides a golf club head capable of increasing carry on average even if being used by an amateur golfer who is prone to hit a ball by varied hit points of clubface. A golf club head 1 has a face part 2, a crown part 3, a sole part 4, a side part 5, and a hosel part 6, which are formed of titanium or a titanium alloy. A thick part 10 is provided near the central portion in the toe-heel direction of the rear portion of the crown part 3. The distance a between a foremost portion 10f the thick part 10 and the foremost portion of the crown part 3 is 20 to 80% of the total length L of the crown part 3.

Abstract: A hollow golf club head includes a sole, a crown, a skirt, and a striking face. The golf club includes a junction interconnecting the sole, crown, and skirt to the striking face, the junction including at least one stiffening member.

Abstract: A golf club head according to one or more aspects of the present invention may generally include a strike face, a top portion, a bottom portion, a heel portion, a toe portion, and a hosel having a central axis located in a first imaginary vertical plane. A discrete, at least partially curvilinear stiffening element, having generally vertical side surfaces, may be coupled to at least one of the top portion and the bottom portion to improve the dynamic-excitation response of the club head. Preferably, the stiffening element is oriented such that an imaginary horizontal line intersects at least one of the vertical surfaces at at least two points. Additionally, the stiffening element may have at least two inflection points located along a non-linear path characterized by the vertical projection of one of the side surfaces onto at least one of the bottom portion and the top portion of the club head.

Abstract: A hollow golf club head includes a sole, a crown, a skirt, and a striking face. The golf club includes a junction interconnecting the sole, crown, and skirt to the striking face, the junction including at least one stiffening member.

Abstract: A ball striking device, such as a golf club head, has a head that includes a face configured for striking a ball and a body connected to the face, the body being adapted for connection of a shaft thereto. The head may include one or more stiffening elements or other structures contacting an inner surface of the face, to provide locally increased stiffness to particular areas of the face. The stiffening element includes a chamber adapted to contain a viscous substance. The viscous substance can be selected and inserted into the chamber to create regions of increased stiffness in desired locations, leaving other regions of the face to have increased flexibility as compared to the stiffened regions.

Abstract: A golf head club has a high moment of inertia and thus produces a pleasing hitting sound. A metallic golf club head 1 having a hollow space therein includes a face member 30 provided with a face part 31, and a body member 10 provided with a sole part 11, a crown part 12, a side part 13, and ribs 20. The hollow space is defined by the inner surfaces of the face part 31, the sole part 11, the crown part 12, and the side part 13, and the wall surfaces of the ribs. The ribs 20 extend from the inner surface of the sole part 11 to the inner surface of the crown part 12, and the body member 10 is molded integrally by casting.

Abstract: A golf club head according to one or more aspects of the present invention comprises a striking surface having a face center, a crown portion, and a sole portion, four quadrants, and a linear stiffening element coupled to at least one of the crown portion and the sole portion. The linear stiffening element may extend from the heel region to the toe region of the club head. The stiffening element is disposed in at least three of the four quadrants, at an angle between 50° and 85° relative to an imaginary vertical plane oriented substantially perpendicular to the striking surface and containing the face center. The stiffening element has a survey length, the ratio of the overall width to the survey length being less than 0.97.

Abstract: A titanium alloy golf club head and a method for manufacturing the same are provided. The golf club head comprises a head base, a hitting face at a front edge of the head base and a top lid on the top of the head base. The head base, the hitting face and the top lid are connected to each other to form an entirety. The top lid has an inside surface comprising a plurality of recesses. With the recesses, the weight of the head is reduced while the volume of the head is increased. Meanwhile, the thickness of walls of the head base and of the hitting face does not need to be reduced. Since the weight of the top lid is reduced, the center of gravity of the head is lowered. A rib is formed between two adjacent recesses in the inside surface of the top lid so that an impact force on the head can be efficiently dispersed and the strength of the head is improved.

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 according to one or more aspects of the present invention comprises a sole portion, a crown portion, and a stiffening element associated with at least one of the crown portion and the sole portion. The stiffening element has a survey length and at least one welded portion, comprising less than about 70% of the survey length. The stiffening element further comprises a plurality of welded portions. The welded portions adjacent each other are separated by a distance between about 10 mm and about 100 mm. A method of producing a golf club head comprises identifying a plurality of high-deflection regions having a plurality of ranges and providing a stiffening element, at least in part coupled with the plurality of high-deflection regions. The stiffening element comprises a plurality of heights and/or widths corresponding to the plurality of deflection ranges. At least one of the plurality of heights and/or widths is different from at least another of the plurality of heights and/or widths.

Abstract: A hollow golf club head with a concave portion is disclosed and claimed. The club head includes a metallic portion and a light-weight portion, which may be formed of plastic, composite, or the like. The concave portion allows the club designer to make a club head having very thin portions while still maintaining the requisite structural integrity. Convex bulges may optionally be provided to house weight inserts to enhance the playing characteristics of the golf club. The metallic portion of the club head may take on the appearance of a frame, into which several light-weight inserts are positioned. These light-weight inserts may be positioned in the crown, skirt, and sole of the club head. The club head may be formed by co-molding, eliminating the need for welding or adhesives, freeing mass to be used in more beneficial ways. The club head may be large to increase playability and forgiveness.

Abstract: A golf club head has a body having a top, a sole, a toe end, a heel end, and a forward wall. The forward wall defines a front opening about which a face support is disposed. The face support receives a face plate, thereby enclosing the front opening of the body. The face support includes portions proximate to the top, the toe end, and the heel end, each portion having a peripheral member extending rearward from the forward wall and a rear member extending inward from the peripheral member, with respect to the front opening. The face support can be combined with a preferred face construction and weight elements to optimize club head performance to help a golfer achieve greater distance and control.