Abstract: A golf club head with a body and an asymmetrical visual swing indicator is provided. The asymmetrical visual swing indicator may be formed to represent an apparent backswing path outward of an actual backswing path. In certain configurations the asymmetrical visual swing indicator is positioned such that a portion of the asymmetrical visual swing indicator closest to the hitting surface of the golf club is closer to a heel end plane of the golf club head then a portion of the asymmetrical visual swing indicator closest to a rear surface of the golf club head. A method of fitting a golf club head by determining an initial swing plane using a measuring device, determining a desired swing plane, and applying an asymmetrically shaped visual indicator to a golf club head based upon the determined initial swing plane and the desired swing is also provided.

Abstract: A golf club head with a body and an asymmetrical visual swing indicator is provided. The asymmetrical visual swing indicator may be formed to represent an apparent backswing path outward of an actual backswing path. In certain configurations the asymmetrical visual swing indicator is positioned such that a portion of the asymmetrical visual swing indicator closest to the hitting surface of the golf club is closer to a heel end plane of the golf club head then a portion of the asymmetrical visual swing indicator closest to a rear surface of the golf club head. A method of fitting a golf club head by determining an initial swing plane using a measuring device, determining a desired swing plane, and applying an asymmetrically shaped visual indicator to a golf club head based upon the determined initial swing plane and the desired swing is also provided.

Abstract: A golfing aid 11 having two levelling sensors 32, 33 mounted on a D shaped sensor body 31 and a mounting means having three adjustable connectors 41, 51, 61 for adjusting the orientation of the D shaped sensor body 31 and an indication output in the form of spirit level bubbles 32, 33 for providing an indication of the sensed level orientation. A system of interactive adjustable connectors linked together to provide such variability that allows connection to any one of left and right handed clubs with different shaft diameters, different angle of putter shaft to putter head and different length shafts and different length putter heads to allow for substantially aligned overlying of the D shaped sensor body 31 over the putter head 23 while substantially aligning the golfing aid front face 34 correctly with the putter head front face 24.

Abstract: Golf clubs and golf club head structures having an indicator providing a visual indication of a location of a center of gravity of a wood-type golf club are presented. The indicator may include a central portion or hub that is generally aligned with the center of gravity of the club. The indicator may also include a plurality of legs extending outward from the hub toward a perimeter of the golf club head. In some arrangements, the indicator may be formed to distribute a portion of the weight of the club head in order to adjust or move the center of gravity of the club head, in addition to providing a visual indication of the location of the center of gravity.

Abstract: A golf club head, according to one or more aspects of the present invention, comprises a metallic striking wall having a striking surface and at least one through score-line opening. At least one complementary component may be disposed rearward of the striking surface such that at least a part of the at least one complementary component extends into only a part of the at least one through score-line opening.

Abstract: The present invention provides an apparatus for a golf club and training device. The golf club may be approved for on the course play by the United States Golf Association (USGA). An embodiment of a training device for a golf club includes a handle having a grip where the handle is coupled to a golf club head. The head has an internal alignment device and may include a contact plate, a top plate and a bottom plate. The top plate has a first upper surface including a top alignment marking and the bottom plate has a second upper surface including a bottom alignment marking. The top plate may include an attachment aperture for attaching an external alignment device. The external alignment device may include a laser, an alignment guide, a weight, or the like.

Abstract: A golf club may have an orientation marker located on the golf club that indicates at least a relative orientation between the golf club head and shaft. The orientation marker may be located, for example, on the golf club head or shaft. A key member provides additional information with respect to the relative orientation between the golf club head and the shaft. The key member may be located, for example, on the golf club head, shaft, or grip portion, or on a head cover for the golf club head.

Abstract: An adjustable alignment golf putter to compensate for a golfer's visual misalignment of the putter face due to eye predominance to the intended or target line taking into account the slope and contour of the green comprising an upper golf grip and a lower putter head attached to opposite end portions of a putter shaft, the putter head includes visual alignment means formed on the side opposite the putter face including a visual alignment base to support an adjustable alignment element movably positioned thereon to selectively align the adjustable alignment element on a virtual line between the optimum contact point and the cup angularly off set relative to the intended or target line between the golf ball and cup to compensate for the golfer's visual misalignment when putting the golf ball along the intended line to the cup.

Abstract: A putter-type club head (20) having a main body (25) and a removable aft member (30) is disclosed herein. The putter-type club head (20) has a main body (25) that is preferably composed of an aluminum alloy. The removable aft member (30) is preferably composed of stainless steel and has a mallet shape.

Abstract: A golf club, particularly a “putter” or “chipper”, is provided with a concave ball striking face that establishes line contact with a golf ball rather than the usual point contact and enhances the capability of a user to control the direction of ball movement resulting from a golf stroke. The concave ball striking surface may be curved and may have the same or greater curvature than the curvature of a golf ball and may have smoothly and gently merging surface regions of compound curvature. The concave ball striking face surface may have compound regions including a curved region and a planar region being smoothly and gently merged. The concave ball striking surface may be defined on an integral metal club head structure or may be defined by a polymer insert that is recessed into an insert receiving receptacle of the club head.

Abstract: A golf swing training apparatus and method of using same that instructs a trainee in the two optimum golf swings, namely an inward swing and an outward swing. The apparatus of the invention is of a unique configuration that, through the use of a novel practice ball assembly, allows a trainee to positively observe the differences between the inward golf swing and the outward golf swing.

Abstract: A golf club comprising: a shaft; a head affixed to a distal end of the shaft and having a ball striking face, the head comprising spaced apart lower and upper portions which have respectively: lower and upper primary alignment guides extending substantially perpendicular to the ball striking face, the lower primary alignment guide provided by at least one lower slot portion in the lower portion and the upper primary alignment guide provided by at least one upper slot portion in the upper portion; and lower and upper secondary alignment guides extending substantially parallel to the ball striking face, the lower secondary alignment guide provided by at least one further lower slot portion in the lower portion and the upper secondary alignment guide provided by at least one further upper slot portion in the upper portion, the primary and secondary alignment guides being positioned relative to one another so that a golfer's eyes are correctly aligned relative to the golf club head when the primary and secondary

Abstract: There is provided a golf club which helps master a proper swing path easily without too much burden while hitting balls. A golf club 10 includes a hollow shaft 14; a club head 20 provided at a tip portion 16 of the shaft 14; a grip 24 provided at an base end portion 22 of the shaft 14; and balance-shifting means 26 which increases a swing balance of the golf club 10 in association with a swing of the golf club 10. The balance-shifting means 26 includes a partitioning portion 32 which divides an inside space of the shaft 14 into a first portion 28 on the tip portion 16 side and a second portion 30 on the base end portion 22 side; and a balancing material 34. The partitioning portion 32 includes a first shifter portion 46 which allows the balancing material 34 held in the first portion 28 to move to the second portion 30 side in association with a swing of the golf club 10; and a second shifter portion 48 which allows the balancing material 34 on the second portion 30 side to return to the first portion 28.

Abstract: A golfing aid 11 having two levelling sensors 32, 33 mounted on a D shaped sensor body 31 and a mounting means having three adjustable connectors 41, 51, 61 for adjusting the orientation of the D shaped sensor body 31 and an indication output in the form of spirit level bubbles 32, 33 for providing an indication of the sensed level orientation. A system of interactive adjustable connectors linked together to provide such variability that allows connection to any one of left and right handed clubs with different shaft diameters, different angle of putter shaft to putter head and different length shafts and different length putter heads to allow for substantially aligned overlying of the D shaped sensor body 31 over the putter head 23 while substantially aligning the golfing aid front face 34 correctly with the putter head front face 24.

Abstract: Golf club, comprising a shaft, which at one end thereof carries a striking head, which on the topside thereof facing the other end of the shaft has a pattern including a first line that extends parallel to a side face of the striking head, which forms a striking surface against a golf ball, two second lines connecting to ends of the first line and diverging at the same angle (?) from the ends of the first line and approaching the stroke surface, the angle (?) being in the range of 5-35.

Abstract: A system of training a golf swing including the steps of providing a positional apparatus that provides the golfer with variable impact heights and variable rotational positions to enable them to learn the correct swing, and also includes various additional training items. The stand provides heights ranging from the traditional on the ground striking position up to the golfer's waist to train the swing incrementally and can be positioned anywhere within the golfer's peripheral sight. It also provides the golfer a way to learn the correct movements used in the swing without the pressure of trying to effect a golf ball flight.

Abstract: A golf club having a golf club head with an alignment line that makes the actual face angle of the golf club appear differently when the golf club is at address. The golf club head preferably has a white line at a face-crown junction which changes the appearance of the face angle while the golf club is at address. The golf club head is preferably a driver or fairway wood, and preferably has a volume of 250 cubic centimeters to 475 cubic centimeters.

Abstract: This invention relates to a golf club consisting of a club head having a tapered bore formed therein extending and tapering inwardly from the base of the club head to the upper surface thereof, a socket of corresponding external shape to the bore in the club head and a shaft adapted to be inserted into a bore formed in the socket. The socket is inserted upwardly into the end of the bore in the base of the club head and due to the taper is positively retained in said bore against upward movement.

Abstract: Exemplary embodiments described herein are directed to golf club heads and golf clubs including a golf club head, including a body having a generally vertical planar face, a means for aligning the planar face with a golf ball, wherein the means is positioned behind the planar face, and an orifice for receiving a club shaft.

Abstract: An apparatus and method for improving the consistency and effectiveness of a golfer's swing. In a first aspect of the invention, a gyroscope is mounted in the head of a gold club has a rotor which is rotated by a small electric motor. A pair of dry cell batteries and a push type “on/off” switch In a grip of the golf club turn the motor on and off. The batteries are connected to the motor with a pair of wires which extend through a tubular golf club shaft. The rotational plane of the rotor is parallel to the face of the golf club head which strikes a golf ball. When the rotor is rotated, changes in the plane of rotation or spin axis of the rotor are resisted by the angular momentum of the rotor, thereby producing reaction torques which are sensed by a golfer. The reaction torques inform the golfer of the release of the club and changes in the path of travel. In a second aspect, the invention the gyroscope is mounted directly on an end of a golf club shaft.

Abstract: The present invention provides a putter head which includes a putter head body which has a portion thereof connected to a distal end of a putter shaft; a laterally extending putter face which is formed on a front portion of the putter head body; a strip-like longitudinal line mark which is capable of being aligned with an imaginary ball hitting line at an address position, the longitudinal line mark being formed on an upper surface of the putter head body and extending rearwardly from a center of the putter face in the direction orthogonal to the putter face; and blurring marks which are formed on the upper surface of the putter head body in a state that the blurring marks sandwich the longitudinal line mark, the blurring marks having profile lines which are arranged substantially symmetrically and non-parallel with respect to the longitudinal line mark, wherein the profile of one blurring mark is arranged approximately parallel to the imaginary ball hitting line at a take-back position and the profile line o

Abstract: An adjustable putter head for a golf putter is designed having an elongated line of sight marking on a top surface of the putter head to aid in aligning the putter head in a putting direction toward a target point, and a putter face which is pivotally connected to the putter head to allow selective adjustment of an angular position of the putter face relative to the line of sight for purposes such as adjusting a face angle orientation to compensate for improper putting strokes, or lining up breaking putts using the line of sight to aim the putt at the hole as a fixed target while adjusting the face angle orientation to align the ball striking face square to an off-line direction of intended ball movement.

Abstract: A golf putting training device is provided which comprises a pair of alignment guides extending from the club face to provide a visual means of reference for the golfer during the putting stroke. The training device provides a means for the golfer to improve his accuracy through repeated use and allows muscle memory to remember the correct motion during the golf club swing.

Abstract: A golf club having a golf club head with an alignment line that makes the actual face angle of the golf club appear differently when the golf club is at address. The golf club head preferably has a white line at a face-crown junction which changes the appearance of the face angle while the golf club is at address. The golf club head is preferably a driver or fairway wood, and preferably has a volume of 250 cubic centimeters to 475 cubic centimeters.

Abstract: A golf club with optical indicating system includes a head having an elongate planar face defining the hitting surface of the golf club. Above the hitting surface, at least a pair of spaced-parallel forwardly protruding guides are located extending perpendicularly to the hitting surface. The guides define the indicating system that visually helps the player to determine the best path between the position of the ball on the golf green and the hole. The guides may be integral with the body of the club's head or may be separate parts thereof.

Abstract: A customizable alignment sighting device for a golf club is mounted to an upper surface of the head of the golf club with a sighting element providing the user a visual target indicator for desired alignment of the club head with the user's line of sight. The sighting element can be readily adjusted for the user's preferences. When not aligned, the sighting element provides an indication of the magnitude and direction of misalignment. In one embodiment, the device is shaped as a planar disc mounted on the upper surface of the club head by leveling posts spaced around its periphery. The sighting element is a concave lens or lenticulated grid or grill superimposed on a target image. In another embodiment, the device has a 3D device body mounted in a mounting cup or socket fastened to or formed in the head of the golf club.

Abstract: A tool has an adjustable lie angle, face angle, weight, and shaft length and is used by a golfer to adjust a putter to the optimal lie angle, face angle, weight and shaft length for that golfer. The tool head has a face plate and a sole disposed normal to one another. An angle member has a vertical wall disposed parallel to the face plate and a horizontal wall that overlies the sole. A hosel is pivotally mounted to the vertical wall and a first protractor is fixedly secured to the vertical wall. A marker on the hosel indicates the lie angle on the first protractor. A second protractor secured to the sole indicates a face angle when the shaft of the club is rotated about its axis. Weights are selectively added to the toe, heel, or mid-point of the putter head to determine an optimal weight and weight distribution.

Abstract: A putter (100) having a club head (20) having a central aperture (32) with a rearward center of gravity is disclosed herein. The club head (20) has a body (22) that is preferably composed of stainless steel. The body (22) has a face portion (24), a crown portion (26), a sole portion (28) and an aft-mass portion (30). The face portion (24), the crown portion (26), the sole portion (28) and the aft-mass portion (30) define the central aperture (32). The crown portion (26) extends rearward from the face portion (24) over the aft-mass portion (30). The central aperture (32) separates the crown portion (26) from the sole portion (28) and the face portion (24) from the aft-mass portion (30). The crown portion (26) has an alignment means (40) thereon for aiming a golf ball during putting. The putter has novel inertial properties.

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: The present invention provides a novel visual golf club-head curvilinear path indicator and method of use. Specifically, the present invention provides a visual golf club-head curvilinear path guide in the form of one or more alignment lines or markings on putters and other club-heads that are curvilinear (instead of linear) and that curve toward the golfer's body as he or she stands at address. The curvilinear line (or lines) and/or shape (or shapes) are intended to provide the golfer with a visual reminder to move the club-head back and through along a curvilinear path.

Abstract: A Planar-Parallactic Golf Alignment Aide is disclosed. Also disclosed is a device that provides the golfer with a planar alignment sight line for aligning the club face with the target. The invention further provides the golfer with a parallactic alignment sight line for placing his or her head in the proper and repeatable position in order to eliminate unintentional stance variations. The aide may be incorporated within the club head and operate by aligning an aperture or line with the projected image of that aperture or line to use the phenomena of parallax for head alignment. The aperture or line is formed in the top of a dome, and the projected image then appears on a projection surface below the dome. The device may either be an attachment for a conventional club head, or may incorporated into the head itself.

Abstract: A golf putter having a putter head that rotates when struck off-center by a golf ball includes a shaft that is centered on the putter head. The shaft and the putter head both include indicating lines that line-up and, upon the putter head being struck, will move out of alignment, with the amount of rotation visually showing the golfer where on the putter head the ball struck. The indicating lines are easily lined up again for the next putt.

Abstract: A golf putter having a virtual hitting face frontward offset from an actual hitting face of a putter head is disclosed. The golf putter comprises a putter head having a hitting face, a toe part and a heel part, a hosel connected on the putter head, a shaft which is formed with a grip at an upper end thereof, a shaft receiving part connected to the hosel to receive a lower end of the shaft; and a virtual hitting position decision plate which, when a golfer look downward at the hitting face, covers the hitting face, and has a virtual hitting face at a position forwardly offset from the hitting face.

Abstract: A hard rubber plate forms a striking surface that covers most of a front face of a body of a club head of a putter. The thickness of the plate prevents an uncovered edge of the front face from striking a golf ball. The front face has an arcuate shape that indicates a part of the striking surface that ideally strikes the golf ball. A sighting fin extends rearward from the front face. The fin has a horizontal sighting surface that provides sighting in a direction perpendicular to the striking surface. The body has a plurality of threaded holes wherein a screw is engaged to provide a desired weight and distribution of weight of the club head. When a mallet putter is oriented with its hosel extending vertically above its body, a bottom of the mallet putter's body slopes upward from its front face to a back of the body. Disadvantages of a large front to back length of a mallet putter are obviated by the upward slope.

Abstract: The present invention provides an improved golf putter for increasing alignment and feel in the putting stroke which includes a club head having a body and a forward ball striking surface and a club shaft having a handle, the shaft connected to and extending upwards from the body of the club head. A weight-receiving pocket is formed in an upper surface of the body of the club head and a weight mounting device such as a screw is mounted within the weight-receiving pocket in the body of the club head. At least one club head weight is removably mounted within the weight-receiving pocket of the body of the club head by engagement with the weight mounting device, the club head weight including club head alignment indicia on the top face of club head weight operative to provide visual alignment cues for ball striking by the forward ball striking surface.

Abstract: A golf putter having visual indicia to correct for misalignment caused by eye predominance, the visual indicia being generally D-shaped with the back line linear portion parallel to the clubface and the arc portion facing forward toward the clubface, with a linear alignment line disposed within the arc and back line such that the alignment line is angled a slight amount away from perpendicular to the back line, such that the golfer falsely perceives the alignment line to be perpendicular to the clubface.

Abstract: A putter (100) having a club head (20) having a central aperture (32) with a rearward center of gravity is disclosed herein. The club head (20) has a body (22) that is preferably composed of stainless steel. The body (22) has a face portion (24), a crown portion (26), a sole portion (28) and an aft-mass portion (30). The face portion (24), the crown portion (26), the sole portion (28) and the aft-mass portion (30) define the central aperture (32). The crown portion (26) extends rearward from the face portion (24) over the aft-mass portion (30). The central aperture (32) separates the crown portion (26) from the sole portion (28) and the face portion (24) from the aft-mass portion (30). The crown portion (26) has an alignment means (40) thereon for aiming a golf ball during putting. The putter has novel inertial properties.

Abstract: A flat shaft for use with conventional golf clubs and putters which includes a flat side of the shaft that faces the target at address. The flat shaft enables the user to view the golf ball with clear, non-distorted contrast on a flat plain, because your eye lines up the ball vertically. When the flat shaft is pointed at the target at address it also squares the golf club head. Tennis rackets and hockey sticks have flat shafts because they provide the best view of objects striking the hitting surface. The flat shaft device is positioned slightly ahead of putter head for recessed contact.

Abstract: A putter for improving a golfer's putting game having a shaft attached to a head having a hitting surface, top surface, and a bottom surface. The head having a front portion and a rearwardly extending portion. The rearwardly extending portion having a pair of side walls. An aperture being defined on the bottom surface of the head. A ball disposed within the head and protruding through both the apertures of said top surface and bottom surface. The ball being both removeable and mounted to roll only in the direction perpendicular to the hitting surface.

Abstract: A method of improving the putting stroke of a golfer using a putter as a training device, said putter having a club head and in one embodiment an attachment for the same. The club head has faces or edges defining a body of a predetermined thickness to which a shaft is attached. Within the body of the head there is provided a recess in a form which opens into the rear face of the head or as a closed aperture completely defined within the body which is of marginally greater dimensions than, and adapted to receive an object such as a conventionally sized golf ball. The recess or aperture can be disposed of substantially centrally of the head so that the “sweet spot” can be substantially centrally disposed of said recess or aperture. Ideal toe-heel weight distribution can be achieved in this manner. The club, which is typically a putter, can be used as a practicing aid by swinging the same proximate a surface when the articles or objects are disposed within said recess or aperture.

Abstract: A method of aligning a putter, including the steps of providing a putter having a head, a heel, a toe, and a planar striking face including a removable reflecting surface for receiving and reflecting incident light; providing a light source separate from the putter head; directing light from the light source towards the reflecting surface such that the reflective surface is illuminated with and reflects a portion of the light; and detecting the reflected light with a reference device.

Abstract: A strike indicator for a golf club with a face with a sweet spot that is a most desirable area on the face for impacting a golf ball is provided. The includes an energy absorbing material and an adhesive backing attached to the energy absorbing material. The energy absorbing material and the backing have at least one edge for demarking the area of the sweet spot when the indicator is attached to the face of the golf club so that there will be a noticeable absorption of energy when a golf ball impacts the energy absorbing material.

Abstract: A golf putter having a virtual hitting face frontward offset from an actual hitting face of a putter head is disclosed. The golf putter comprises a putter head having a hitting face, a toe part and a heel part, a hosel connected on the putter head, a shaft which is formed with a grip at an upper end thereof, a shaft receiving part connected to the hosel to receive a lower end of the shaft; and a virtual hitting position decision plate which, when a golfer look downward at the hitting face, covers the hitting face, and has a virtual hitting face at a position forwardly offset from the hitting face.

Abstract: The present invention provides a device and method to facilitate use of a golf club, having a face, as a system to improve a user's performance in the game of golf. The device includes a body having first and second opposed surfaces; and a clamping mechanism connected to the body to securely affix the body to the golf club, with the second surface being coextensive with the first surface and having an arcuate shape with a constant radius of curvature.

Abstract: A trial golf club and golf fitting system for determining at least one custom fitted golf club. The trial club includes a golf club head having a sole defined by a radius of curvature. The sole of the golf club head includes graduated indicia for identifying an optimal lie angle for the fitted club. When the golfer swings the trial golf club, the optimal lie angle of the fitted club is identified by locating the point of impact on the sole of the head of the trial golf club.

Abstract: A putter (100) having a club head (20) having a central aperture (32) with a rearward center of gravity is disclosed herein. The club head (20) has a body (22) that is preferably composed of stainless steel. The body (22) has a face portion (24), a crown portion (26), a sole portion (28) and an aft-mass portion (30). The face portion (24), the crown portion (26), the sole portion (28) and the aft-mass portion (30) define the central aperture (32). The crown portion (26) extends rearward from the face portion (24) over the aft-mass portion (30). The central aperture (32) separates the crown portion (26) from the sole portion (28) and the face portion (24) from the aft-mass portion (30). The crown portion (26) has an alignment means (40) thereon for aiming a golf ball during putting. The putter has novel inertial properties.

Abstract: A golf club head (10) of the wood variety includes a first, second and third spaced apart guide fins (20, 22, 24) arranged from the hosel end of the head portion (12) to the opposite tip end. The first fin (20) extending along the lower and rear surfaces of the head portion is orthogonal to the ball striking surface (16). The second fin (22) on the hosel curved end wall extends angularly toward the player and angularly to the first fin. The third fin (24) is located on the tip (38) end wall extending downwardly and outwardly from the head portion. All three fins have respective maximum extension points (30, 36, 42) such that the club head can rest on these points on a flat surface spacing the major lower head portion surface from flat surface.

Abstract: An attachment for the head of a golf putter which is to be used to train a golfer in making a precise smooth swing when striking of a golf ball in order to propel the golf ball directly to the target. The attachment comprises a rigid body which has an arcuate outer surface. The attachment is to be removably adhesively secured to the striking face of the golf putter. The arcuate surface of the attachment extends in an arc from a direction directly adjacent the toe of the head of a golf putter to a position directly adjacent the heel of the head of the golf putter.

Abstract: The present invention is directed to a non-putting iron-type golf club head having an improved striking face configuration comprising of a non-pear like shaped contour but rather a substantially symmetrical shaped one. The striking face extends to the intersection with the top face creating a top line trailing edge, wherein this edge extends from the heel to the toe and is substantially symmetrical in shape. All score lines on the striking face are symmetrical too. A theoretical vertical centerline, positioned in-line with the geometric center of the striking face and an equal distance from the toe and the heel edges. Various methods are employed to position the center of gravity of the total mass of the club head in positioned along the theoretical vertical centerline. This equates the mass of the head portion towards the heel and that of the toe as divided by the vertical centerline.

Abstract: A putter (100) having a club head (20) having a central aperture (32) with a rearward center of gravity is disclosed herein. The club head (20) has a body (22) that is preferably composed of stainless steel. The body (22) has a face portion (24), a crown portion (26), a sole portion (28) and an aft-mass portion (30). The face portion (24), the crown portion (26), the sole portion (28) and the aft-mass portion (30) define the central aperture (32). The crown portion (26) extends rearward from the face portion (24) over the aft-mass portion (30). The central aperture (32) separates the crown portion (26) from the sole portion (28) and the face portion (24) from the aft-mass portion (30). The crown portion (26) has an alignment means (40) thereon for aiming a golf ball during putting. The putter has novel inertial properties.