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

Abstract: A golf club head includes a golf club head body and at least one weight-adjusting member mounted thereto. The golf club head body is provided with at least one assembling portion to combine the club weight-adjusting member. The club weight-adjusting member is made from a material selected from a mixture of macromolecular materials and metal powders such that the club weight-adjusting member functions to adjust a center of gravity of the golf club head and to absorb vibrations in striking a golf ball.

Abstract: A golf putter system including features that allow customization of the overall weight of the putter head, as well as the distribution of the weight. The golf putter includes a shaft and a head that is attached to an end of the shaft. The head typically includes an elongated body including a front face having a substantially flat putting surface adapted to strike a golf ball on a ball striking area disposed on the putting surface. The system normally includes a plurality of elongated end members that are releasably attachable adjacent each end of the body. The end members, when attached, may allow a user to configure the overall weight of the head and may allow a user to configure the location of the center of mass of the head. The end members generally include a rear portion that, when attached, extends beyond a rear surface of the body, axes that are substantially perpendicular to a longitudinal axis of the putting face when attached, as well as, end sight lines that mark the axes of the end members.

Abstract: A golf club is fabricated with at least one vertical stability plate and/or at least one horizontal stability plate at a club head. The golf club is provided with a stability plate and an asymmetrical wing, or a combination of the same, which are installed at an upper side or left and right sides of the head of the golf club such as a driver, wood or iron, for example. An aerodynamic force generated in a downward direction by the loft of the club face is compensated by asymmetric wings applying an aerodynamic lifting force to an upper direction of the club head during a swing of the club. Even when a golfer has a swing speed or posture problem when swinging a club, the head of the club is guided to rotate along a desired proper orbit. A golf ball can be hit by a sweet spot of the head face of the club due to the stability and compensating force for achieving a straight drive, and enhanced flying distance.

Abstract: A golf club head comprises a head main body being provided with at least one hole having a helical groove on its inner surface, and a damper having a thread on its outer surface and screwed to the hole of the head main body, the damper being made of elastic material at least partially for absorbing vibration of the head main body.

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: 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 is disclosed that includes a weight integral to a bridge member extending across a cavity back golf club head. The weight modifies a position of a center of gravity of the golf club head. The weight is independently movable in multiple directions to further vary the center of gravity of a golf club head.

Abstract: An improved golf club fitting system for fitting a set of golf clubs to a player includes the steps of measuring a player's hand grip strength and selecting a representative golf club having a dead weight directly proportional to the player's grip strength. The club length and the swing weight of the representative golf club are then determined by standard testing procedures commonly used in the golf club industry. A balance index (BI) for the representative golf club is then computed by dividing the dead weight (DW) by the swing weight (SW) (DW/SW=BI) and the balance index (BI) is compared to the dead weight to determine generally corresponding values for the remaining other golf clubs in the set such that the system user can match different irons and woods to the representative golf club thereby creating an ideal matched set of golf clubs for the player.

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: A variable golf club head includes multiple skeletal faces each having a ball contacting surface, a point for shaft attachment, and an attachment surface typically opposite the ball contacting surface. In the construction of the variable golf club head, one skeletal face is selected from the multiplicity of skeletal faces provided. Each skeletal face away from the ball contacting surface is provided with an array of fastening points, the array varying with the particular skeletal face selected. Multiple head covering bodies are provided for each skeletal face to fasten over the backside of each skeletal face and extend away from the ball contacting surface. These head covering bodies impart to the variable golf club head appearance and aerodynamics. Each head covering body is typically capable of being fastened to a series of skeletal faces at selected fastening points.

Abstract: A golf club, and particularly a putter, is provided with an alignment line which extends along a length of the putter shaft and a length of the putter head. The alignment line is disposed in a plane perpendicular to the axis of the shaft and parallel to the face of the putter head and allows a golfer to align the face of the club perpendicular to an imaginary line along which a golf ball is to be driven. The body of the putter head is a skeletal frame and is covered with a plastic coating to fill up the openings in the body and provide a flat striking surface.

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: The present invention provides a golf club head, in which a stable high-inertia moment is generated at the time of down swinging and impacting of a golf club, thereby reliably achieving the effect of increase in driving distance. A golf club head has a plurality of hollow chambers 3 arranged in mutually parallel relation and in mutually adjacent relation within a head 1 from a heel 6 toward a toe 7. Each hollow chamber 3 is faced with a sole-forming wall. A weight 9 composed of a granular body or liquid body is sealed in each of the hollow chambers 3, and each of the hollow chambers 3 is provided with an openable and closable inlet/outlet port 8 for charging the weight 9 into each of the hollow chambers 3.

Abstract: An improved golf clubhead having a hollowed strike-barrel (10) centrally located and positioned parallel on the golfer's intended target line for more precise alignment and efficient on-target stroke.

Abstract: Several features are combined to provide a balanced putter, which assists a player in perfecting a putt stroke during practice and repeating it with the same club during play. The clubhead is substantially symmetric around the shaft and has tapered top and bottom surfaces such that the angle of the shaft relative to the sole of the putter is no more than 80 degrees. The shaft is attached at the center of the clubhead, and the clubhead and shaft are arranged so that the center of gravity of the clubhead strikes the center of the golf ball. The clubhead has a playing surface on one face that is parabolic and can be flat in the extreme. The clubhead has a practice surface on the other face that is curved, preferably elliptical, to assist the golfer in learning the proper stroke. The putter conforms to the Rules of Golf so that the player does not have to change clubs between practice and play. The club may be used for a right- or left-handed stroke.

Abstract: An improved golf club-head having a hollowed strike-barrel (10) centrally located and positioned parallel on the golfer's intended target line for more precise alignment and efficient on-target stroke. The mass of strike-barrel walls (16) in a graduating manner providing additional force behind the usual-mis-hit-area, therefore compensating for the misdirection and the loss of velocity on off-center strikes. The strike-barrel pocket (12), and any additional pockets in the rear of arms (40), hosel (44), and the heel and toe (42), providing a significant air drag when the club-head is swung back from the ball, thereby slowing the golfer's backswing. The strike-barrel (10) having bead-mark sights (49) and (28) on its parallel axis along the target line for improved alignment and stroke. An elongated hosel-base (32) provides assistance to the golfer in keeping the clubhead on track longer.

Abstract: A method of putting a golf ball includes a golfer standing erect with the head up and the body facing the hole. The golf ball is positioned to the side of the golfer on his dominant side. A uniquely designed putter is grasped in the dominant hand with the grip of the putter extending upwardly along and against the dominant arm to a position above the elbow. The upper portion of the grip and the dominant arm are grasped firmly with the non-dominant hand to provide stability and the dominant arm and club are swung smoothly in a pendulum-like motion from the shoulder of the dominant arm. The result is a smooth consistent putting swing wherein the effects of flexing elbows and twisting wrists are eliminated and, ultimately, a better putting game and lower golf score. The invention also includes an unique putter for carrying out the inventive putting technique.

Abstract: An improved golf club head is disclosed, in which a desired weight for the head is precisely controlled by installing into a cavity formed in the rear wall of the club head's hollow main body a selected weight cartridge from a group of such cartridges having identical sizes but a range of weights. The selected weight cartridge is installed simply by sliding it into the rear wall cavity, where it is retained by a snap fit, and/or by an interference fit, and/or by a suitable bonding material, without the need for a screw attachment. This greatly simplifies the golf club head's manufacture, thus reducing its cost. The invention is applicable to golf club heads of all kinds, including metal woods, irons and putters.

Abstract: A golf club head includes a body adapted to be connected to a shaft. The body has a plurality of cavities formed therein for receiving weights to alter the weight characteristic of the golf club head. One of a plurality of different faceplates are adapted to be removably fastened to the body.

Abstract: A putter head formed of a first material having a heel, a toe, a back, a top, a sole and a face forming the designated impact surface with a golf ball. The face comprising a generally planar surface extending from the heel to the toe and from the top to the sole. A plurality of horizontal rows of apertures are formed along substantially horizontal planes through the face into a body area between the face and the back. The apertures are formed to selected and different depths depending upon their location on the face. A filler of selected weight per unit area may be added to selected apertures. A putter head of selected weight, balance and feel is provided.

Abstract: A set of golf club heads having peripheral weights that change from club head to club head so that the center of gravity rises from the long irons to the short irons resulting in a consistent peak trajectory height along a line for each club head.

Abstract: An adjustable golf club comprises an elongate shaft having a handle at one end, a club head having a face arranged to strike a golf ball, a pair removable shaft attaching members each arranged to be coupled to the club head at respective sides of the striking face whereon the shaft extends therefrom. A pair of changeable weights, each one of the weights is arranged to be coupled to a respective one of the shaft attaching members. An insert portion on the club head at respective sides of the striking face for receiving the shaft attaching member. A stem extending from each of the shaft attaching members arranged to extend through the club head whereon the weights are coupled and an adjustable fastening arrangement in the insert arranged such that the angle of the shaft in relation the club head can be changed. The shaft attaching members are arranged to be interchangeable to allow the club to be usable for left or right handed golfers.

Abstract: A golf club head is provided of the metal wood type, wherein a faceplate of the club head carries a weighted insert. In one form, a weighted insert is mounted into a forwardly open cavity formed in the faceplate and defines a front end visible from the exterior of the club head and disposed substantially coplanar with the club head faceplate. In another form, the weighted insert is formed integrally at the interior or inboard side of the faceplate may be associated with indicia visible from the exterior of the club head to indicate the location thereof.

Abstract: An improved golf club head is disclosed, in which a desired weight for the head is precisely controlled by installing into a cavity formed in the rear wall of the club head's hollow main body a selected weight cartridge from a group of such cartridges having identical sizes but a range of weights. The selected weight cartridge is installed simply by sliding it into the rear wall cavity, where it is retained by a snap fit, and/or by an interference fit, and/or by a suitable bonding material, without the need for a screw attachment. This greatly simplifies the golf club head's manufacture, thus reducing its cost. The invention is applicable to golf club heads of all kinds, including metal woods, irons and putters.

Abstract: It is described a golf club head comprising a front face (3) or striking face, a bottom face (2) and a top face, said golf club head is provided with one or more movable screws or weights (7) for adjustment of the club heads balance. The weights or screws (7) are made of a material with a relatively high specific gravity, and are provided in tube sleeves (1) inside the club head. The screw (7) can be adjusted to any desired position between the ends of the tube sleeves (1) and thereby adjust the balance point of the club head. The tube sleeves (1) are provided slanting from the front face (3) of the club head down towards the rear part of the bottom face (2) of the club head.

Abstract: A modular-design putter head, having an extruded main body with detachable, heat treated face and hosel bracket. A unique floating-face feature impart trampoline effect when a ball is struck. A flexible hosel, fastened at two points at the rear of the main body acts as a spring for softer touch. Acoustical properties are enhanced with an internal echo chamber which can be filled with foam. A further departure of the traditional putter design and method of manufacture involve the use of extruded metal to form the main putter head. The extruded stock can be cut to desired lengths allowing for economical production of different weight putter heads.

Abstract: An L-shaped putter has a head 2 fixed to a tip end of a shaft 1, wherein the head 2 is formed in a planar L-letter shape including a face part 3 and a long sidewall 4 extending rearwardly from a heel-side end of the face part 3. A toe-side end of the face part 3 and an end of the sidewall 4 are each provided with a weight 6, thereby forming an oblique center-of-gravity line connecting the two weights. Thus, the center of gravity of a sweet spot can be set at a deep position toward the rear of the face, and the generation of twisting forces in the face part 3 at the time of putting is prevented to give a self diagonal retaining inertia, whereby a ball can be rolled accurately along the target line.

Abstract: A golf putter head includes a metal body with a heel, a toe and a front face. The metal body has a central cavity and a pair of lateral cavities in the front face with the lateral cavities being spaced apart and disposed at opposite ends of the central cavity. One of the lateral cavities is located adjacent the heel of the body, and the other lateral cavity is located adjacent the toe of the body. A blind bore formed in each lateral cavity extends into the body in a direction generally perpendicular to the front face. A weight member is disposed in each blind bore. Non-metallic material in the central and lateral cavities forms an insert in the central cavity arranged for impacting a golf ball and other inserts in the lateral cavities for retaining the weight members in the blind bores. Preferably, the non-metallic material in the central cavity and the lateral cavities is polyurethane.

Abstract: A golf putter head and weight adjustable arrangement include a putter head body, the putter head body having a plurality of receiving holes respectively extended to a back side wall thereof in direction perpendicular to a face panel thereof, and a plurality of weights fitting the receiving holes and selectively fastened to the receiving holes to adjust the location of the center of gravity of the putter head body, the weights each having at least one annular locating groove around the periphery thereof, at least one rubber retaining ring respectively mounted on the at least one annular locating groove and adapted to secure the respective weight to the receiving holes of the putter head body, and a rear tool hole adapted to receive a hand tool being used to carry the weights in and out of the receiving holes of the putter head body.

Abstract: The present invention is directed to improved multi-layer golf ball compositions and the resulting regulation balls produced using these compositions. In this regard, a smaller and lighter core is produced and metal particles, or other heavy weight filler materials, are included in the cover compositions. This results in a molded golf ball exhibiting enhanced perimeter weighting. Preferably, the particles are included in a relatively thick inner cover layer (or mantle) of a solid, three-piece multi-layered golf ball. In another preferred version, one or more patterns of weighting material are incorporated in the ball, and most preferably along the outer periphery of the ball so that the pattern is visible along the ball's exterior. Particularly, one or more transparent viewing windows are provided along the outer surface of the golf ball to reveal weighting material disposed within the ball.

Abstract: An iron golf club head comprised of a head body 10 made of light metal such as titanium and containing a plurality of weight members 16. The head body 10 includes a front surface 13, a rear surface 13a, a cavity 12 disposed at the rear surface 13a, and a plurality of holes 15 disposed in the head body 10 at the rear surface 13a between a lower side wall 12b of the cavity 12 and a sole 14 of the head body 10 at predetermined intervals between a toe part 17 and a heel part 18. The center axis of each hole 15 is oriented substantially parallel to the sole 14 of the head body 10. The weight members 16 are press-inserted into the holes 15 in a direction going toward the front surface 13 of the head body 10 to a predetermined depth. Each weight member 16 is made of a material having a heavier specific weight than the light metal used for the aforesaid head body 10. Tungsten or tungsten alloy can be used as the material for the weight members 16.

Abstract: A golf putter includes a club head and an upstanding shaft having a lower hosel end removably supported on the club head. Structure is provided for selectively locating the hosel in multiple selected positions spaced apart in front-to-rear and transversely extending paths on the club head, as well as structure for selective weighting of the club head both forward and rearward of the selected hosel position on the club head. Further structure is provided for selective spring biased live weighting of the club head and still further structure is provided for selective additional dead weighting of the club head laterally of the shaft hosel portion.

Abstract: A golf club head with an internal power shaft that extends along the target line. In a high volume club head embodiment above 250 cm..sup.3, constructed of a low modulus alloy compared to stainless steel, the power shaft has a preload, or static compression, to increase the modulus of elasticity of the head and ball striking face. This preload technique is expanded in another embodiment into a semi-customized line of golf club woods, where the club head modulus of elasticity increases with the golfer's club head speed by progressively increasing preload in the club head line. The power shaft is press-fitted into the rear of the ball striking face to reduce bonding and welding difficulties in joining the power shaft to the ball striking face. The modulus of the face wall and the power shaft is enhanced by casting or welding the sole plate of the club head along an axial extent directly to the outer surface of the power shaft thereby increasing its columnar strength.

Abstract: A golf putter construction 10 comprising a putter head member 20 having a putter head body 21 provided with a generally vertical face 22 having a plurality of apertures 24 formed therein and dimensioned to receive a like plurality of insert members 30 including weighted elements 32 which may be captively retained within the putter head member 20 by a clear impact cover plate 25.

Abstract: Non-conventional clubhead designs for driver, fairway clubs (woods), irons, and putter type golf clubs wherein the maximum (optimized) clubhead mass and centralized balance/momentum control mechanism are coincident with the clubhead center of percussion improved efficacy in the angular of momentum exchange between golf club and ball at impact, and optimum flight trajectory, distance, accuracy, and control. Additional non-conventional design features of the driver and fairway clubs (woods) include a low drag aerodynamic profile, fully-active double curvature aerodynamic wing, integral impact shock/vibratory damping, a double curvature faceplate that is insensitive to fracture and cave-in, and a highly contoured soleplate for up-hill and down-hill lies.

Abstract: A golf putter comprising a shaft, a elongate head detachably connected to the shaft and having an impact wing on a longitudinal end thereof and a counterweight adjust means on another longitudinal end thereof, and a connecting structure connecting the shaft and head, in which the head is provided with an impact face on a surface of the impact wing which is positioned in a perpendicular relationship with a lateral axis of the head; and the connecting structure includes a threaded portion formed at a lower end of the shaft and a first thread head formed in the head in a position perparticular to a lateral axis of the head for thread engagement with the threaded portion.

Abstract: A golf putter which can stably maintain the directional stability of its head while being swung so that a golf ball can be rolled accurately along an intended line. Side walls extend rearwardly from both ends of a face portion of the putter. Each side wall carries a weight at its rear end, so that the head is lighter at its face end than its rear end. Thus, the directional stability of the head while swinging the ball improves.

Abstract: An adjustable balance weighting system (10) is provided for adjusting the weighting and balance of a golf club of either the "iron" or the "wood" type in order to encourage the golf club to be in tune with the golfer's swing and/or to correct any deficiencies that may exist therein. An eccentrically weighted balancing disk (32 or 82) is mounted on or in the club head (14 or 74) so as to be rotatable about a first Allen screw (60 or 84) and provides a mechanism by which the center of mass, and therefore the sweet spot, of the club head (14 or 74) may be varied. In the case of an iron-type club head (14), the balancing disk (32) is mounted in a substantially vertical orientation in a cavity (30) on a cavity back wall surface (40) at the rear face (24) of the club head (14). In the case of a wood-type club head (74), the balancing disk (82) is mounted in a horizontal orientation in a recess (80) in the top surface (78) of the club head (74).