Abstract: Embodiments of movable weights, such as weight plugs and other types of movable weights, for a golf club head are disclosed herein. One embodiment for a weight plug, for example, includes a mass element with a first end that has a threaded portion and a second end. The weight plug also has a weight cap with a seal retention portion that is configured to engage a seal. The cap is also configured to engage the threaded portion of the mass element. A seal is positioned between the first end of the mass element and the seal retention portion of the cap.

Abstract: A golf club head of this invention includes a head body, a weight member attached to the head body, and a fixing unit to fix the weight member at one of a plurality of attachment positions of the head body. The plurality of attachment positions are located on a plane. The plane includes the center-of-gravity position of the head body without the weight member attached thereto and the axis of a shaft to be attached to the golf club head.

Abstract: A customizable golf club head is disclosed herein. The customizable golf club head includes a face component having a face and a flange, a crown-plate attached to the flange, a sole-plate attached to the flange, a skid-plate attached to the sole-plate, a swing-weight member, and a plurality of removable weight members with each of the plurality of weight members positioned within a pocket of the plurality of pockets.

Abstract: A golf club head includes a body and a retaining element removably mounted to the body. The retaining element includes a main body and an annular wall extending from a side of the main body of the retaining element. The annular wall defines a compartment for receiving a weight that is retained to the body of the golf club head by the retaining element. A vibration absorbing washer is received in the compartment of the retaining element and mounted to the weight. The vibration absorbing washer absorbs vibration during swing, thereby enhancing assembling reliability of the weight.

Abstract: A high inertia golf putter head is generally wedge-shaped, with the leading face being less wide than the trailing face. Cavities and weights are provided to optimize the moment of inertia.

Abstract: Embodiments of movable weights, such as weight assemblies and weight screws, for a golf club head are disclosed herein. One embodiment for a weight assembly, for example, comprises a mass element having a first end, a second end and a sidewall extending between the first end and the send end. The sidewall of the mass element defines a first bore extending through the mass element and at least a portion of the sidewall of mass element tapers in a direction from the first end to the second end. This embodiment further includes a retaining element configured to engage the first bore adjacent the first end of the mass element and defining a second bore. The weight assembly further includes an elongate fastener having a first end configured to be received within the second bore of the retaining element and a second end extending through the first bore and beyond the second end of the mass element when the mass element, retaining element and fastener are assembled together.

Abstract: A golf club head and a removable weight that is received in a receptacle of the golf club head. The weight includes a cap and a slug. The cap is removably coupled to the receptacle and includes a recess that receives a portion of the slug so that the cap and slug are able to rotate relative to each other. The slug includes an anti-rotation feature that prevents relative rotation between the slug and the receptacle and a curved abutment surface.

Abstract: A golf club head (42) having a delta of the coefficient of restitution between a geometric face center of the face (72) and a location (806) 0.5 inch sole-ward from the face center that is less than 0.065. 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 moment of inertia about the Izz axis through the center of gravity of the golf club head greater than 4000 grams-centimeters squared, and a moment of inertia about the Ixx axis through the center of gravity of the golf club head greater than 3000 grams-centimeters squared.

Abstract: A putter head includes a head main body that defines a periphery of the putter head, and a bar that crosses a void space of the head main body in a forward-backward direction. The bar is inserted into insertion holes and fixed thereto by an adhesive. A face member is mounted on a recess. A shaft fixing hole is provided to pass through the bar from the top surface of a front portion of the head main body. A shaft is inserted into the shaft fixing hole and fixed thereto by an adhesive.

Abstract: A golf club head comprises: a face portion having a front face forming a club face and a rear face facing a hollow; a sole portion extending backward from the face portion and having an outer surface forming an undersurface of the head and an inner surface facing the hollow, the sole portion provided with a tubular part whose hole forms a socket; and a weight member secured in the socket. The tubular part protrudes from the inner surface of the sole portion into the hollow. The sole portion is provided on the outer surface with at least one stiffening groove so that said at least one stiffening groove forms at least one stiffening rib on the, inner surface of the sole portion, and the stiffening groove is partially included in a vicinity zone which is defined as extending 10 mm from the socket.

Abstract: A golf club head includes a recessed part on the external surface of a head main body, and a weight member mounted in this recessed part and formed of a material having a specific gravity greater than that of the head main body. This golf club head has a first addition member mounted on and abutting the external side of the weight member. A base of this first addition member is a resin or a rubber. The head has a second addition member mounted on and abutting the external side of the first addition member. This second addition member is formed of a metal having a specific gravity greater than that of the first addition member and smaller than that of the weight member. Therefore, the joint strength between the head main body and the weight member can be enhanced.

Abstract: A golf putter head with a front portion comprising traditional shape and appearance, with an integral face insert extending through the head to an alignment and weighting portion extending beyond the main body of the putter, adding improved alignment, increased MOI and adjustable weighting and adjustable balance and optimizable Center of Percussion. The putter head comprises a central face insert portion extending through the body and above the traditional weight flange, with mass relieved portions below the top of the alignment piece in order to receive one or more optional weights, and the upper side of the rearwardly extending portion being engraved or marked with various alignment indicia, and the whole through-head insert face portion and rearwardly extending portion being affixed to the base portion of the head at least in part with threaded fasteners.

Abstract: A head (2) includes a head body (4), an additional member (6) in which a contour shape obtained by a projection onto a plane has a rotational symmetric axis (z1), and a holding mechanism (28) for holding the additional member (6). The head body (4) has a recess portion (18) in which at least a part of the additional member (6) can be fitted. The holding mechanism (28) is constituted to enable a mutual transition of a holding state in which the additional member (6) is held in the recess portion (18) and a releasing state in which the hold is released. The recess portion (18) inhibits a rotation around the rotational symmetric axis (z1) of the additional member (6) in the holding state. The additional member (6) is rotatable around the rotational symmetric axis (z1) in the releasing state. A phase of the additional member (6) in the holding state is changed so that a position of a center of gravity of the head can be varied.

Abstract: Iron golf clubs heads and clubs include: (a) a ball striking face; (b) an opposite rear surface; (c) a sole portion extending rearward from the ball striking face and defining a cavity having an open upper portion; (d) an insert element mounted in the cavity, wherein the insert element includes at least one weight port; and (e) a weight member mounted in the port. The insert element may substantially fill the cavity to dampen vibrations and/or noise when a ball is struck. Additionally, the insert element may allow the weight(s) to be selectively placed to enable customization and tuning of the overall weight of the club head (e.g., for swing weighting purposes, for ball flight control purposes, etc.). Methods of making such club heads and clubs also are described.

Abstract: Golf putter heads having a front piece and a rear piece that is separate from and connected to the front piece. Embodiments of the golf putter heads include rear pieces having arrowhead shapes. Embodiments of the golf putter heads include rear pieces with removably connectable weights that can be positioned about the perimeter of the rear piece. Golf clubs (e.g., putters) that include one of the present golf putter heads, and methods of treating the strike face of certain of the present golf putter heads.

Abstract: A golf club head is provided with a recessed part provided on the external side of a head main body, with a weight member formed of a material having a specific gravity greater than that of the head main body and mounted in the recessed part. A first addition member is mounted on the external side of the weight member in an abutting relationship, with a base of the addition member being a resin or a rubber. The head has a second addition member formed of metal is mounted on the external side of the first addition member in an abutting relationship. The metal of the second addition member has a specific gravity greater than that of the first addition member and smaller than that of the weight member. Through this arrangement, joint strength between the head main body and the weight member is enhanced.

Abstract: Individual weights and a related kit for adjustably weighting a golf club head are provided, allowing a golfer to fine-tune the club for his or her swing. The kit is useable with a club head that defines a plurality of weight recesses spaced about the club head. The kit includes a plurality of weights, including weights of different mass. Each weight is sized to be threadably received within a recess of the club head. Varying placement of the weights enables a golfer to vary impact conditions in the club head, for optimum distance and accuracy. The kit may further include a tool having an engagement end configured to operatively mate with the fasteners of the weights. The tool preferably includes a torque limiting mechanism configured to inhibit over-tightening of the weights into the recess of the club head. The tool and weights may be provided along with the golf club.

Abstract: A wood-type golf club head is described that includes a body including one or more walls defining an interior cavity and multiple weight ports formed in the body. At least one weight is configured to be retained at least partially within at least one of the weight ports. One or more fins or ribs are secured to each of the weight ports and to another structural member of the golf club head.

Abstract: The invention provides a golf club head having adjustable weight, allowing the golfer to fine tune the club for his or her swing. The club head includes a body having a ball-striking face, a sole, a crown, and a side extending rearwardly from the face. The body defines an interior cavity and a recess on a selected wall of the body spaced apart from the striking face. A threaded opening is disposed in the recess. The club head further includes a weight assembly having fastener and a mass element configured to be press-fit into the recess the such that a first end is adjacent the bottom of the recess. The mass element also has an aperture configured to receive the fastener flush. The fastener removably attaches the weighting assembly to the selected wall of the club head. Pressure from the fastener attachment provides a press-fit of the mass element in the tapered recess of the selected wall.

Abstract: The invention provides a golf club head having adjustable weight, allowing the golfer to fine tune the club for his or her swing. The club head includes a body having a ball-striking face, a sole, a crown, and a side extending rearwurdly from the face. The body defines an interior cavity and a recess on a selected wall of the body spaced apart from the striking face. A threaded opening is disposed in the recess. The club head farther includes a weight assembly having fastener end a mass element configured to be press-fit into the recess the such that a first end is adjacent the bottom of the recess. The mass element also has an aperture configured to receive the fastener flush. The fastener removably attaches the weighting assembly to the selected wall of the club head. Pressure from the fastener attachment provides a press-fit of the mass element in the tapered recess of the selected wall.

Abstract: Embodiments of movable weights, such as weight assemblies and weight screws, for a golf club head are disclosed herein. One embodiment for a weight assembly, for example, comprises a mass element having a first end, a second end and a sidewall extending between the first end and the send end. The sidewall of the mass element defines a first bore extending through the mass element and at least a portion of the sidewall of mass element tapers in a direction from the first end to the second end. This embodiment further includes a retaining element configured to engage the first bore adjacent the first end of the mass element and defining a second bore. The weight assembly further includes an elongate fastener having a first end configured to be received within the second bore of the retaining element and a second end extending through the first bore and beyond the second end of the mass element when the mass element, retaining element and fastener are assembled together.

Abstract: In one embodiment, a golf club head is presented having a sole with three recessed cavities for attachment to a hosel-bending tool. In another embodiment, a golf club head is presented having a sole that includes one predetermined contact area proximal to the toe edge of the sole. In another embodiment, a golf club head is presented having a sole in which pads of material are incorporated that may be milled to vary the relief of the sole and to modify mass characteristics of the club head. Yet another embodiment presents a golf club head having a body with a cavity to receive a cartridge that has a constant density and weight.

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

Abstract: A golf club head comprises: a face portion having a front face forming a club face and a rear face facing a hollow; a sole portion extending backward from the face portion and having an outer surface forming an undersurface of the head and an inner surface facing the hollow, the sole portion provided with a tubular part whose hole forms a socket; and a weight member secured in the socket. The tubular part protrudes from the inner surface of the sole portion into the hollow. The sole portion is provided on the outer surface with at least one stiffening groove so that said at least one stiffening groove forms at least one stiffening rib on the,inner surface of the sole portion, and the stiffening groove is partially included in a vicinity zone which is defined as extending 10 mm from the socket.

Abstract: A golf club head (42) having a delta of the coefficient of restitution between a geometric face center of the face (72) and a location (806) 0.5 inch sole-ward from the face center that is less than 0.065. 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 moment of inertia about the Izz axis through the center of gravity of the golf club head greater than 4000 grams-centimeters squared, and a moment of inertia about the Ixx axis through the center of gravity of the golf club head greater than 3000 grams-centimeters squared.

Abstract: A golf club head includes a golf club head body and at least one club head component. The golf club head body provides with an assembling opening which includes a welding inner circumference, a supporting bottom periphery and a tapered portion. The club head component correspondingly provides with a welding outer circumference and a rear periphery. In welding, the welding inner circumference of the assembling opening is engaged with the welding outer circumference of the club head component, and the supporting bottom periphery of the assembling opening is further engaged with the rear periphery of the club head component. The tapered portion of the assembling opening is used to form a space for releasing inert gas from a welding portion in welding operation.

Abstract: A golf club head is provided with a body that has an address position with a zero degree bounce portion on the sole and a center sole position with a multi-relief surface of the sole having a negative bounce portion. The negative bounce portion may comprise a negative 0.5 to a negative 4.0 degree surface. In one embodiment, the multi-relief surface may comprise the negative bounce portion and a cutaway portion extending to the back of the sole, which may have a depth of about 0.05 to 0.5 inch from a regular sole surface. In another embodiment, the golf club head includes a weight system to adjust the center of gravity. In one embodiment, the weight system is a tube having a weight at one end that may be inserted into the golf club head to move the center of gravity at least forward and backward within 6 mm and up and down within 6 mm. Preferably, the tube is angled downward toward the face by at least 3 degrees.

Abstract: A golf club head comprises a main body provided with at least two holes and detachable parts attached to said holes, the detachable parts including a weight member and a damper, the weight member having a specific gravity larger than the main body, the damper having a specific gravity different from the weight member and made of elastic material at least partially for absorbing a vibration of the main body, and the damper and the weight member being attached to the holes of the main body so that each position can be exchanged.

Abstract: The invention provides a golf club head comprising a head body, a weight body, and a fastener. The head body has at least one recess that is partially delineated by a first recess wall, a recess bottom, and an opening formed in the recess bottom. The weight body is disposed in the recess, wherein the weight body has a first aperture with a first diameter. The fastener comprises a fastener head and a fastener body, wherein the fastener head has a second diameter. The fastener head is disposed between the first aperture and the opening formed in the recess bottom, wherein that the fastener body and the opening are adapted to be removably engaged to one another and the first diameter is less than the second diameter.

Abstract: A golf club head comprising an outer shell and a strike plate having a strike face. The outer shell and the strike face define a club head volume. A heel/toe axis extends through the center of gravity of the club head. The heel/toe axis is generally parallel to the strike face and generally horizontal relative to a ground plane when the club head is at an address position. The rotational moment of inertia about the heel/toe axis is related to the club head volume by the equation Ixx ?,46*HV+77, where Ixx is the rotational moment of inertia about the heel/toe axis in units of kg-mm2 and HV is the club head volume in units of cm3.

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 weight for use with a golf club head is provided. The golf club head defines a recess for receiving removable weights, and a threaded opening in a wall of each recess. The weight comprises titanium and has a total mass between about 1 gram and about 2 grams. In addition, the weight comprises a head and a threaded body. The head defines a socket for receiving an engagement end of a tool, and is configured to substantially conform to a recess of the club head. The threaded body, extends from the head and is configured to cooperatively engage the threaded opening of the club head. The threaded body also has an annular ledge, located in an intermediate region of the threaded body, which has a diameter greater than that of a threaded portion of the body.

Abstract: A golf club head (42) having a standard deviation of coefficient of restitution of less than 0.226 is disclosed herein. The golf club head (42) also preferably has a delta of the coefficient of restitution between a geometric face center of the face (72) and a location (806) 0.5 inch sole-ward from the face center that is less than 0.065. 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 moment of inertia about the Izz axis through the center of gravity of the golf club head greater than 4000 grams-centimeters squared, and a moment of inertia about the Ixx axis through the center of gravity of the golf club head greater than 3000 grams-centimeters squared.

Abstract: A golf club head includes a body having at least one recessed portion for securely receiving at least one weight member. The weight member includes a lid with a plurality of protrusions respectively received in receiving portions of the recessed portion. At least one of the protrusions has a weight different from those of other protrusions. The lid has a symmetric shape the same as that of the recessed portion of the body, allowing the lid to be mounted in the recessed portion in one of at least two orientations that correspond to at least two different locations of a center of gravity of the golf club head, thereby allowing rapid change in the center of the gravity of the golf club head.

Abstract: A golf club head includes a golf club head body and a weight member mounted in a recession of the golf club head body. The weight member includes at least one solder channel for receiving solderable filler. The weight member is mounted in the recession of the golf club head body before a brazing process for bonding the weight member with the golf club head body. During the brazing process, the solderable filler is melted and fills a gap between the weight member and walls delimiting the recession of the golf club head body to thereby increasing bonding strength between the weight member and the walls delimiting the recession of the golf club head body.

Abstract: The present invention provides a golf club head which satisfies the following three conditions in a moment M of inertia around a center line of a shaft axis (g·cm2) and a depth L of center of gravity (mm): 4000?M?7000;??(1) 30?L?50; and??(2) M?200×L?2000.

Abstract: A golf club head is disclosed that includes weight positioning system for modifying a position of a center of gravity of the golf club head. The weight positioning system includes a weight and a support. The weight is independently movable along the support to change the position of the center of gravity in a first direction, and the weight is independently movable around the support to change the position of the center of gravity in a second direction.

Abstract: A golf putter (10) includes a putter head (316) having a putter body (320), a heel weight (344H), a toe weight (344T) and a first sole insert (354F). The putter body (320) includes a heel region (330) and a toe region (332), and is formed from a material having a first specific gravity. The heel weight (344H), the toe weight (344T) and the first sole insert (354F) are each formed from materials having specific gravities that are greater than the first specific gravity. In one embodiment, the putter head (316) also includes a second sole insert (354S). The sole inserts (354F, 354S) are positioned partly in the heel region (330) and partly in the toe region (332) of the putter body (320). In another embodiment, the first sole insert (354F) has a first specific gravity, and the second sole insert (354S) has a second specific gravity that is greater than the first specific gravity.

Abstract: A golf putter head has a generally triangular shape where a ball-striking leading wall has a first breadth greater than a second breadth of a trailing wall. The leading wall and trailing wall are interconnected at their respective opposite ends by sidewalls that converge toward one another and define a cavity having a trapezoidal shape. The center of gravity of the golf putter head is closer to the trailing wall than the leading wall so that a moment of inertia is generated that reduces the effects of missing a sweet spot on the leading wall during a putt. In a second embodiment, the trailing wall is weighted to move the center of gravity still closer to the trailing wall. In a third embodiment, a web interconnects the leading and trailing walls along a longitudinal axis of the golf putter head, dividing the cavity into two equal-sized cavities.

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 club head for a golf club comprises a strike face and an outer shell. The strike face and the outer shell define a head volume of the club head. The club head has a first axis that extends generally horizontally and parallel to the strike face, a first moment of inertia about the first axis, a second axis that lies generally vertically and perpendicular to the first horizontal axis, a second moment of inertia about the second axis, and a center of gravity lying below a horizontal centerline of the club head. The first moment of inertia in units of kg-mm2 is greater than or equal to approximately 77 plus 0.46 times the head volume in units of cm3.

Abstract: A golf club head has a body with a front, striking face, a rear face, an upper face and a lower face. A lightweight sole plate of glass fiber reinforced plastic material is secured across the lower face of the body.

Abstract: A golf putter head with a heel end and a toe end includes a face member arranged for impacting a golf ball. A rear member extends in an arcuate path from one end of the face member to the other end of the face member. The face member and the rear member are made of a low density material such as carbon fiber. A first plurality of three weight members is disposed in the rear member, and each of these three weight members is each made of high density material, such as tungsten. A second plurality of two weight members is disposed in the face member, and each of these weight members is also made of high density material.

Abstract: A golf club vibration dampening and sound attenuation system including an elongated shaft, a club head, a resilient insert assembly, a dampener, and a grip. The shaft has a distal shaft end and a proximal shaft end. The club head is coupled to the distal shaft end, and includes a front wall and a sole portion. The front wall has a rearwardly sloped front strike side and a rear side. The sole portion rearwardly extends from a lower region of the rear side. The rear side and the sole portion define a cavity and a recess. The recess downwardly extends into the sole portion. A resilient insert assembly is positioned in and substantially fills the recess. The insert assembly is coupled to one or both of the sole portion and the lower region. The dampener is disposed within the shaft and has at least one annular radially extending projection.

Abstract: A golf putter and a method for using the same is disclosed. The golf putter includes a putter head with an insert and a radial bottom, a shaft attached to the putter head, and a grip having a gap and a weight attached to the shaft, wherein the gap includes a cutout for attaching a clip. When the clip is connected to a golfer's body, the golf putter is effectively anchored to the golfer. The method includes providing a golf club having a putter head with a putting face, approaching a golf ball such that the big toe of the foot furthest from the target is placed adjacent to the golf ball and the golfer's dominant eye is directly over the golf ball, positioning the golfer erect at forty-five degrees to the target, gripping the putter with the golfer's dominant arm, and putting the golf ball by moving the dominant arm and putter along the target line such that the face of the putter head engages the golf ball with appropriate force to drive the golf ball to the target.

Abstract: A golf putter head of triangular shape. A ball-striking leading wall has a first breadth greater than a second breadth of a trailing wall. The leading and trailing walls are interconnected at their respective opposite ends by sidewalls that converge toward one another. A web interconnects the leading and trailing walls along a longitudinal axis of the golf putter head. A first embodiment may include a trailing copper weight and side wall aluminum weights. A second embodiment may include three copper weights, a third embodiment may include three copper-tungsten weights, and a fourth embodiment may include three tungsten weights. The weights are removable so that a putter having a low swingweight or a high swingweight can be brought up to or down to a standard swingweight. The weights may also be mixed in the second, third, and fourth embodiments.

Abstract: A golf club head comprising of a top, a sole, a toe, a heel, a front plate having a front and rear side, and an extended back portion integral with the sole and the rear side defining a cavity wherein the extended back portion is integral with the rear side between the top and the sole of the golf club head.

Abstract: A golf club head is disclosed that comprises a body having a striking face, a rear cavity and a sole bar, wherein a recess is formed in the sole bar that extends generally from the rear cavity. An insert is located within the sole recess, the insert including a core and an intermediate layer that separates the core from the recess wall. The intermediate layer has a hardness and a modulus of elasticity that are less than that of the core, such that when the golf club head is used to strike a golf ball, the resulting vibrations are dissipated by compression of the intermediate layer and movement of the core with respect to the intermediate layer.

Abstract: The invention provides a golf club head having adjustable weight, allowing the golfer to fine tune the club for his or her swing. The club head includes a body having a ball-striking face, a sole, a crown, and a side extending rearwardly from the face. The body defines an interior cavity and a recess on a selected wall of the body spaced apart from the striking face. A threaded opening is disposed in the recess. The club head further includes a weight assembly having fastener and a mass element configured to be press-fit into the recess the such that a first end is adjacent the bottom of the recess. The mass element also has an aperture configured to receive the fastener flush. The fastener removably attaches the weighting assembly to the selected wall of the club head. Pressure from the fastener attachment provides a press-fit of the mass element in the tapered recess of the selected wall.

Abstract: The invention provides a golf club head having adjustable weight, allowing the golfer to fine tune the club for his or her swing. The club head includes a body having a ball-striking face, a sole, a crown, and a side extending rearwardly from the face. The body defines an interior cavity and a recess on a selected wall of the body spaced apart from the striking face. A threaded opening is disposed in the recess. The club head further includes a weight assembly having fastener and a mass element configured to be press-fit into the recess the such that a first end is adjacent the bottom of the recess. The mass element also has an aperture configured to receive the fastener flush. The fastener removably attaches the weighting assembly to the selected wall of the club head. Pressure from the fastener attachment provides a press-fit of the mass element in the tapered recess of the selected wall.