JP2011152427A - Method for using golf club - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a putting practice implement enabling a player to analyze whether an undesirable speed element is given to a ball in an impact time. <P>SOLUTION: A club head 2 includes at least one striking face 4, a rear race 10 and side faces 6, 8 or edges 32 defining a body 12 of a predetermined thickness to which a shaft is attached. The body of the head includes inside a recess 14 in a form of opening into the rear face of the head, or a hole 14 completely defined within the body. The hole is of marginally greater dimensions than a conventionally sized golf ball, and adapted to receive an object such as the conventionally sized golf ball. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a golf club, and more particularly, but not exclusively, to a putter used in a golf game for hitting a ball along a green surface.

Golf is generally played on a course having 18 holes or 9 holes, and a ball is hit by a player from a tee at one end of the hole, and a green having one hole therein is provided at the other end. The tee and green are separated by a fairway, and the overall principle of the golf game is to drop the ball into the hole on the green with as few ball hits as possible.

The putter is generally used on or around the green to direct the golf ball toward the hole so that the ball falls into the hole. The hole is only on the order of 12 centimeters in diameter, and the putt (which is commonly referred to as hitting with a putter) is often done over 12 meters (40 feet), so To ensure that the ball position is at least close, even if not in the hole, it must be very accurate. In general, the distance of the ball from the hole is proportional to the likelihood of a putt error, and more putts are required to drop the ball into the hole.

In golf competitions, a significant portion of the professional competition is concentrated in putting, and poor players of the putt rarely get successful results. The difference in the scores of players who have equal “tee to green” abilities but are equal in put abilities is immediately apparent.

The fact that relatively few putter exercise tools are currently available is surprising, especially when considering that putting is a substantial component of the competition. One practice tool that can be obtained is conventionally used for indoor use, but is composed of a plastic tray having a groove inclined in a U-shape, and the groove has a narrowed length direction. One end is closed and located substantially in the center of the practice tool and on the base, and the other end is open and close to the base level. The groove is typically formed integrally in the practice tool, and when the practice tool is placed on a carpet or the like, the wide open end of the groove coincides with the outer periphery of the practice tool, and the steep lower end on the carpet is Constitute. The groove is inclined upward from the wide open end toward the closed end in the practice tool body. There is also an ejector mechanism that is powered by batteries.

In use, the practice tool is placed on the carpet, and a user who wants to practice his putt puts the ball at the practice tool and puts it at a distance from the practice tool. The practice tool is arranged so that the open end of the groove faces the user. Due to the sharp lower end of the groove placed on the carpet, the ball hit accurately along the carpet is guided to the closed end of the groove provided in the practice tool toward the groove. A ball that has been puttered in the correct direction for the correct load and training equipment will itself go towards the closed end, which has a small recess and is formed into the spherical shape of a golf ball. The battery-powered ejector mechanism then detects the presence of the ball at the closed groove end and ejects the ball through the inclined groove so that the player can again put the ball in the correct weight and direction. It should be understood that with a good putter, the ball can be repeatedly hit by being received in a narrow groove and in a recess at its closed end.

The main and overall difficulty of such exercise equipment is that it does not solve any of the myriad imperfections that often occur in player putting. In order to hit the golf ball in the correct direction with a putter, a smooth and accurate swing is required. In particular, the arc drawn when the putter head leaves the stationary ball during “back swing”, the arc drawn when the putter head returns to the ball to hit the ball, and the arc drawn after hitting the ball, ie follow-through, The center is part of an imaginary circle that is roughly between the golfer's shoulders. Furthermore, the diameter of the circle in the direction in which it is desired to hit the ball should be parallel to the plane containing the player's feet. Otherwise, the player's putt will either slice the ball or hit the ball from below when impacted from above when viewed from above. In any case, an undesirable velocity factor is imparted to the ball upon impact by the face. The only velocity element that is ideally applied to the ball at impact is that in the desired direction of strike. In this case, the ball simply rolls in the direction in which it was struck.

One object of the present invention is to provide a putt exercise tool that allows a player to analyze whether the ball is imparting an undesirable velocity factor upon impact.

Another object of the present invention is to provide a putter that preferably does not violate the current rules regarding putter structure and thus can be used in competitions and in informal games and / or practice.

Yet another object of the present invention is to provide a putter that can be used in a number of ways to quickly display the accuracy of a player's putt.

Yet another object of the present invention is to ensure that, when used for practice, the putter head's arcuate rotation path corresponds to the theoretical optimal trajectory, particularly when the player's backswing and follow-through are pre-impact. And providing a putter that can "habitually" put a player's putt by responding to the optimal trajectory described later.

Yet another object of the present invention is to provide a practice tool that allows the user to concentrate more on a particular arc of a swing during a hit without concentrating the user's mind only at the actual point of impact. .

According to the present invention, in the first aspect, a golf club having a head, the head has at least one striking surface, a rear surface or an end portion, and a side surface or an end portion, which are curved. Each end or surface defines a head of a predetermined thickness, a shaft for swinging a club is attached to the head, and the head has at least one other arcuate surface or end. Or another flat plate surface or end portion that defines at least one recess between the side surface or the end portion, and the at least one recess portion defined by the other surface or end portion is a head hit A golf club is provided that is adapted to receive an object or object behind a surface.
Typically, the at least one recess passes through the thickness direction of the golf club head.

In one embodiment, the object or object is movable with respect to the head, but if the ball contacts the other surface or end while the club is being swung by the user, the head will cause the movement to strike the surface. However, it acts to limit the parallel direction.

A golf club is typically a putter that is particularly suitable for the practice of the present invention, and in the present invention refers to a putter.
The shaft does not have a key feature in the present invention, and in another aspect of the present invention, it relates to a golf club head whose features are described.
The object or object received in the recess has a shape or size that fits into the recess, and a ball, more specifically a normal golf ball, is suitable as a preferred embodiment.
In the first aspect of the invention, the recess is open at the rear or end of the putter, and in the second alternative, the recess is closed to form a hole in the putter body. The holes are preferably circular and their diameter is marginally larger than the diameter of a normal golf ball.
Preferably, the recess in the first aspect is defined on two sides by another surface or end of the body, and the separation of the other surface or end is more marginal than the object received in the recess in use. Set to be larger.
In the above-described embodiment, it is preferable that the other surfaces or ends are parallel to each other and perpendicular to the striking surface. Furthermore, the other surface or end is provided at substantially the same distance from the center of the striking surface, and therefore preferably has a complementary function as an alignment means.
In any case, it is desirable that the head of the putter is provided with a supplemental aligning means, which is a means for directing the hitting surface from the front in the desired movement direction of the ball after hitting the ball to the putter user. .

Preferably, additional load elements are provided on either side of the recess in the putter head body so that the “toe / heel” load arrangement is balanced. The toe and heel of the putter head are located toward the tip of the striking surface, and the load arrangement across the striking surface reduces the torsional moment applied to the putter head when the impact point with the ball is away from the striking surface. Is provided.

In some embodiments, the object or object in the recess may be placed in a “fixed” position during use, thereby providing a selected effect for use of the golf club. . In one embodiment, the object or object has a load or load arrangement that changes the characteristics of the club when secured to the recess by suitable engagement means.
The golf club head may be of any suitable shape, for example a mallet type or blade type head.

Preferably, the putter conforms to the rules regarding the putter of the Royal and Ancient (R & A) Golf Association. In this case, the putter of the present invention can be used for competition. Other exercise equipment cannot be used in competitions or does not conform to R & A rules. The uniformity of the putt obtained during practice after this is not lost immediately when playing on a golf course, as is the case with current training means by golf professionals.

When a recess is provided in the shape of a hole in the putter head, the entire thickness is preferably defined by the other surface or end, and the hole is substantially the center of the putter head when viewed as a whole. Is provided. However, it may be provided in different places of the hole depending on personal preference or by special practice techniques.
Apart from the position of the holes, the toe-heel load arrangement is obtained automatically. This is because, as described, when the object is released from the head, the relative load toward the tip of the striking surface automatically increases.

If the holes are made towards the back of the putter head body, a large “sweet spot” (the area of the striking surface that creates resonance dynamics in the body of the putter head when there is an impact) is obtained. Experimentation can define the exact location of the hole that produces the largest sweet spot for a particular head configuration.
In another aspect of the invention, the recess can accept an object or object as well as an insert in the form of a sleeve.

In some embodiments, the sleeve is provided to change the size and / or shape of the recess in which the object or object is placed. In addition or alternatively, the insert is provided in the recess so that after the object or object is placed therein, the insert holds or more securely holds the object or object in the recess, and It is provided to guide the movement of the object together with / or the head.

In some embodiments, the insert can move relative to the head and the recess. In some embodiments, when the target or object is also in the recess, the insert can be moved to adjust the position of the target or object in the recess, thereby providing multiple locations for the object in the recess. .
Alternatively, the insert itself is an object or object that can be selected, and can be moved with respect to the recess so that its function can be varied.
In another embodiment, the club head wall defining the recess is shaped to meet certain requirements, for example, concave or convex, and can hold or release the object from the recess in a controlled manner. It may be a thing.
In one aspect of the present invention, the head may have a plurality of recesses therein, at least one of which is provided for receiving an object, the object when the player swings the golf club. Can be released.

Typically, the object is a golf ball, and in one embodiment, each recess is adapted to receive an object therein. Each of the recesses may be arranged in a desirable configuration with respect to each other, but two particularly useful configurations are arranged such that the plurality of recesses are along an axis that is substantially perpendicular to the striking surface of the club head, or Alternatively, or additionally, the plurality of recesses are arranged along an axis that is substantially parallel to the striking surface of the club head. By configuring the recesses in various ways, it is possible to observe various and selected characteristics of the golf club swing, such as swing arcs, head accuracy during movement and / or club grip.

Each object is released from its respective recess at different points in the golf club swing so that various characteristics can be selected and observed, and the released object will then exhibit the swing characteristics upon release. A recess may be formed. This is made possible by forming each recess with a differently shaped wall and / or changing the depth of each recess.

According to another aspect of the present invention, a golf club having a head, the head has at least one striking surface, a rear surface or an end portion, and a side surface or an end portion, each of the surfaces or the end portions being A club head body is defined, the body having a predetermined thickness, the head having at least one other arcuate surface or end, or another flat surface or end, which are side or end At least one recess defined between the portion and the entire body thickness, the at least one recess defined by the other surface or end receiving an object or object behind the striking surface of the club head A golf club configured as described above is provided.

In one embodiment, the recess has an insert that picks up an object in the form of a golf ball from the surface and holds it in the recess of the golf club head until it is released by a golf club user. In this embodiment, the golf club head is used as a means of picking up the golf ball, thereby eliminating the need for the user to bend to retrieve it, and the golf club swings many times in practice to release the golf ball. When performed in accordance with the invention, the ability to retrieve the ball and reinsert it into place for the next practice is useful.
In another embodiment, the recess may receive an insert, while the insert may be capable of receiving and placing another exercise device for use with a golf club. An example of such a practice tool is an alignment device.

According to a third aspect of the present invention, there is provided a putter head attachment body attached to the putter head by an appropriate means, wherein the attachment body defines at least one attachment position and at least one recess therein. Defines one arcuate surface or end or another flat surface or end, the recess is defined behind the putter head and is in contact with the surface or end while the ball swings the putter by the user Sometimes, the recess is provided with an attachment that is configured to receive an object or object in the form of a normal golf ball and limit its movement in a direction parallel to the striking surface.
The mounting body preferably has an arcuate ring behind the mounting position, and the end or surface defining it has a separation that is marginally larger than the diameter of a normal golf ball.
In another embodiment, the mounting body is provided with a pair of spaced limbs extending substantially parallel to the rear of the mounting body position, the separated portion of the limb being marginally larger than the diameter of a normal golf ball.
Preferably, the attachment means securely attaches a uniform and reusable attachment body to the putter head.

In another aspect of the present invention, there is provided a practice method for improving a golf swing using a golf club having means for holding a golf ball to the golf club head, wherein the golf ball is separated from the golf club head during the swing of the club. In the method of allowing detachment, the practice method includes: placing the golf ball at a holding position of the golf club head; swinging the golf club head; A method comprising observing the speed is provided.
The present invention will become more apparent from the following description with reference to the accompanying drawings.

It is a perspective view of a putter according to the present invention. FIG. 6 is a plan view of a modified putter head structure each falling within the scope of the present invention. FIG. 6 is a plan view of a modified putter head structure each falling within the scope of the present invention. It is a top view of the attachment body of another situation of the present invention attached to a blade (blade) putter head, respectively. It is a top view of the attachment body of another situation of the present invention attached to a blade (blade) putter head, respectively. It is a perspective view of the usage mode of the putter as an exercise tool, respectively. It is a perspective view of the usage mode of the putter as an exercise tool, respectively. It is a perspective view of the usage mode of the putter as an exercise tool, respectively.

Referring first to FIG. 1, a putter head 2 is shown having a striking face 4, side faces 6, 8 and a rear face 10, which generally define a body 12 for the putter head. A hole-shaped recess 14 is provided in the body 12 and extends over its entire thickness. Although the holes 14 are disposed substantially symmetrically in the body 12 of the putter head 2 about the horizontal axis 16 and the vertical axis 18, the exact location of the hole center varies within the body 12. May be separated from either of the axes 16, 18 according to choices or experiments relating to the position and size of the sweet spot, generally indicated at 14, of the striking surface 4. It should also be understood that changing the position of the holes 14 changes the dynamic and vibrational characteristics of the putter head. Such characteristics can be changed by providing a toe load 20 and / or a heel load 22 at the toe position 24 or the heel position 26 of the putter head 2. Thus, various changes and improvements can be made to the putter head 2 as desired. One example of such a change is to provide one or more holes in the golf club head, which functions in a manner similar to that already described for the single hole 14.

The heel area 26 is further provided with a location 28, to which a putter shaft is connected so that the user can shake the putter. Such a shaft is shown at 30 in FIGS. 3-5. Although the putter head of FIG. 1 is a mallet type putter head, various types of putter heads can be employed, and according to the present invention, other golf clubs such as drivers or It may be a “wood” golf club. The putter head of FIG. 2 is further provided with a grooved area 32 having end portions 34 and 36 that are recessed from the upper surfaces of the toe and heel regions 24 and 26. While such a feature is not essential to the present invention, a putter having this feature can be matched to the desired flight direction indicated by the ball 38 hit by the striking face 4. This is because the groove ends 34, 36 define discreet edges 40, 42 that are substantially parallel to the desired striking direction 38 and perpendicular to the striking face 4. .

2A and 2B, an alternative configuration of the putter head 2 is shown. In FIG. 2B, the putter head 50 is provided with a U-shaped recess 52 on its rear surface. Accurate alignment of the putter is achieved by separate internal surfaces 54, 56 that define the recess 52. Because these inner surfaces define the ends of the top surface 58 of the putter head, they are parallel to the desired striking direction, perpendicular to the striking surface 4, and the end 40 described with reference to FIG. , 42.
Another putter head 60 is shown in FIG. 2 b and is provided with a hole 62 whose center deviates from both the horizontal axis 62 and the vertical axis 64. Alignment means 66, 68 are provided in a manner similar to that described with respect to FIG.

The main feature of the present invention is that the recess preferably has a relative dimension that is marginally larger than the diameter of the object housed therein, for example an object in the form of a normal golf ball. Therefore, such a golf ball is accepted with tolerance in the hole and recess. In the case of the recess 52, the distance between the end portions 54 and 56 is critically larger than the diameter of a normal golf ball, and in the case of the circular holes 14 and 62, the diameter is critically larger than the diameter of the golf ball. Thus, when swinging back swing and putter, the holes and recesses prevent the golf ball from moving significantly in the direction of the longitudinal axes 18, 64, and in the case of FIG. Make sure there is nothing. This feature is described in more detail with respect to FIGS. 3-5.

An alternative embodiment is shown with respect to FIGS. 2C and 2D, according to which an attachment body 70 with attachment means 72 is provided, which ideally impedes the striking surface 4 of the putter head 74. There is no. This attachment functions in the same way in a broad sense as the holes 14, 62 and recess 52 described in connection with FIGS. 1, 2A and 2B. In both FIGS. 2C and 2D, the relative dimensions of the mounting body 70 are marginally larger than the diameter of a normal golf ball so that the golf ball extends backward in the case of FIG. 2C. Can be received by the recess 76 defined by, and in the case of FIG. 2D by the inner wall 77 of the circular ring. The walls 75, 75 'or 77 prevent the golf ball from moving greatly in a direction parallel to the striking surface 4 of the putter head during the putting stroke.

3-5, the putter head 2 described in connection with FIG. 1 is provided with a shaft 30, which is gripped by a user (not shown) and aligned by the user so as to follow a desired striking direction 38. . This alignment is important for an accurate putt and is supported by the ends 40, 42 on the top surface of the putter head 2 so that the user can determine whether the putter striking surface 4 is in the desired striking direction 38. I can confirm. If the groove of the club head material cannot be provided, the end portions 40 and 42 may be replaced with a coating line applied to the upper surface of the club.

The wall of the recess is also formed to control selected moments of holding and releasing the object during the golf swing. For example, the walls may be straight, convex or concave, and in certain embodiments, the holes are provided to selectively receive one of the rows of insertion sleeves, each sleeve being different. It has an inner wall configuration that allows the characteristics of the recess to be changed according to various practice objectives.
During play on a golf course, it is clear that there is no marking of the desired striking direction, and the user has only alignment edges 40, 42 to assist in the alignment of the putter, in which case the striking surface 4 is It is exactly perpendicular to the imaginary desired strike direction.
In order to practice using the putter head 2 having one recess, a pair of golf balls 80 and 82 are provided. The first golf ball 80 is disposed in front of the striking surface 4, and the second golf ball 82 is disposed in the hole 14 of the putter head 2. The purpose of the putt practice tool of the present invention is to ensure that the impact surface 4 and the desired striking direction 38 are exactly perpendicular during the impact between the striking surface 4 and the ball 80, and that the user is able to To be able to draw an accurate swing arc.

This is accomplished as follows:
In FIG. 4, the putter head 2 slides from the ball 80 from the back swing arc 84 to the position shown in the figure. From the figure, it can be seen that the ball 82 is supported only by the ground 86 on which practice is performed. Thus, the putter head rotates about the backswing arc 84 and ascends from the ground 86, the ball 82 simply falls from the hole 14 due to gravity, but nevertheless remains along the line of the desired striking direction 38, but vice versa. It is limited to move so that it is not an aspect. From the figure, it can be seen that at the end of the user's backswing, the putter has a thickness that prevents the ball 82 from being completely discharged from the hole 14, and the ball is partially held by the wall of the lower end surface of the putter 2. .

Also, in contrast to swing arcs that produce the correct striking direction, it is a common disadvantage of players to bend their wrists when putting them, focus too much on impacts, and poorly putting.

Regarding the first drawback, although not shown in the figure, the player's arm and wrist are in an ideally fixed state throughout the padding, and only the shoulder is turning to strike, thus A uniform and accurate direction of hitting is obtained. (But) If the wrist bends during striking, the putter head will rise above the ground to a greater extent than when the player's arm and wrist are stationary when backswing and swinging. The practice tool of the present invention makes it possible to quickly correct this deficiency for those who are poor at putters. Because the ball 82 is released from the hole when the player bends the wrist while hitting, if the ball is hit correctly, the wrist will not bend and the putter head will rise slowly and to a lesser extent on the ground 86 Because it is only. Furthermore, the putter of the present invention can also be used as a practice tool with only one ball 82, in which case the player holds the ball 82 in the hole 14 at any time during the hit. Can be used to polish the padding.

For the second defect, the practice implement according to the present invention prevents the user's mind from focusing on the impact between the striking surface and the ball. Actually, it is not necessary to actually cause such an impact (because it is not necessary to provide the ball 80 to be hit by the putter as described above). This form of practice is valuable in that it teaches the player to “play through the ball” without focusing on the impact of the striking surface. In all sports, it is actually required to take a mental approach to actually doing sports.For example, in a sprint run, a mental approach toward a point where a sprinter crosses the goal line It is clear that this is an excellent operation. The practice tool of the present invention accomplishes this.

When the putter head swings down from the position shown in FIG. 4 to the position shown in FIG. 5, the ball 82 is captured until the putter head 2 is raised by a distance at least equal to the diameter of the golf ball 82 on the ground 86. The At this stage, the ball 82 is ejected from the hole 14 and, as a result of the angular velocity of the putter head 2 at this point, the ball 82 is given a forward speed that is directly proportional to the angular velocity of the putter head. It should be noted that when the putter head 2 returns from the position shown in FIG. 4 to the rest position in FIG. 3, the striking surface 4 impacts the ball 80, thereby imparting a forward speed to the ball. Due to this impact, and due to the fact that the angular velocity of the putter head after impact is generally lower than that at impact, the ball 82 gives a smaller angular velocity than the ball 80 and is therefore somewhat behind the ball 80.

The above putter head functions as a practice tool in that the user of the putter with the putter head 2 can ascertain whether the follow-through arc in the user's swing indicated by number 85 is in the correct plane. . In this case, the direction of the velocity applied to the ball 82 is the same as the direction in which the ball 80 has already moved, and ideally both of these directions are the same as the desired striking direction 38.

A common disadvantage of those who are poor at golf ball putters is that they tend to pull the putter head in the direction of the main body after hitting the ball 80. In such a state, the putter head 2 is entirely dotted. Follow the path shown at 88. If the swing arc of the putter head 2 is customarily along an incorrect trajectory, such as 88, the player's error is immediately apparent by using the practice tool of the present invention. This is because even if the ball 80 flies at least to some extent along the desired striking direction 38, the second ball 82 is released from the hole 14 of the putter head as a whole in the direction indicated by the dotted line 90. Such a momentary assessment of an inaccurate pad arc of a swing has not been possible with the currently available putt training tools.

The putter head shown in FIGS. 2A and 2C is relative to the putter head shown in FIGS. 1B, 2D and 2D on the ground 86 along the desired striking direction 38 both in front of the striking surface and in front of and behind the putter head 2. It works differently in that it needs to be marked. The putter head shown in FIGS. 2A and 2B ideally matches the player's swing arc to the correct theoretical arc 84 during the putt swing. Thereafter, when the balls placed in the recesses 52 and 76 reach the tip of the backswing, they fly along the desired striking direction 38 marked away from the putter head, and as indicated by numeral 88 in FIG. If an incorrect arc of correct swing is habitually obtained by the player, the flight direction of the ball away from the putter head will compete with the desired hitting direction 38 marked. Thus, the practice method using the putter head shown in FIG. 1 can be performed. In this case, in the practice method, three ordinary golf balls are used, and two of them are the positions of the golf balls 80 and 82 in FIG. And a third golf ball (not shown) is just behind the rear surface 10 and just above the marked line indicating the desired direction of striking 38. In such a method, both the player's backswing and swing-off will follow a theoretically correct arc indicated by numbers 84 and 85, in which case the second golf ball 82 is taken by the ball 80 after impact. Make sure that the orbit is flying and that the third golf ball is in the direction of the marked line indicating the desired striking direction 38 but in the opposite direction of the balls 80 and 82.

The putter head having the configuration shown in FIGS. 1, 2A and 2B has several supplementary features, in particular a plurality of holes 14 can be provided, one of which is provided toward the toe 24 of the putter head 2. The other is arranged in the direction of the heel 26. In such a state, a pair of golf balls are placed in the two holes of the putter head, and when used as a practice tool, both sides of the holes placed on the holes on both sides of the striking direction 38 where speed is desirable. It is given to golf balls. The disadvantages of the player's swing arc are clearer than with the putter head 2, and such a modified putter head is used to assess the specific orientation of the striking surface at impact and thereafter be able to.

It has been proposed to provide a variety of different inserts or plugs, which are inserted into the holes if it is desired to obtain the desired dynamic and vibration characteristics suitable for a particular player in normal play. In addition, it has been proposed to provide a grooved hole, the diameter of which varies in the thickness direction of the putter head, and in particular, the diameter of the hole increases from the upper surface to the lower surface of the putter head. 82 allows for rapid release. This is advantageous when testing a player's short putt, or when the player's swing arc is nearly correct or requires a slight modification.

Another proposal is to provide an elastic ring on the inside surface of the hole 14 so that the player using the putter in normal play simply drives the putter head over the ball so that the ball is positioned in the hole and engages the elastic ring. It is to be able to lift the ball from the ground so that it is held.
In order to improve the overall aesthetic appearance of the putter head 2, a cap covering the upper and / or lower surface of the hole may be provided, such a cap can also be used for identification purposes, or further adjusting means on the cap. May be attached to increase the ability to adjust the putter head and the player.

The cap and the insert or the plug having the hole may be transparent, and actually the entire putter head may be formed of a transparent material.
Yet another insert may be provided to receive the recess and can be used as a load. Each insert also has a different load portion and / or one or several recesses on its top surface so that the putter and insert user typically rotates the position of the insert relative to the club head. So that when placed in the hole, the load distribution is changed to obtain a putter head with varying dynamic and vibration characteristics to suit the player's particular preferences. In one embodiment, undesired movement or rotation of the load can be easily prevented by a simple locking device, for example using an allen key suitably placed in the hole of the putter head. This is done by a grub screw that can tighten the load surface.
It should be understood by those skilled in the art that various changes and modifications can be made to the present invention without departing from the spirit of the invention.

2, 50, 60, 74 Putter head 4 Strike surface 6, 8 Side surface 10 Rear surface 12 Main body 14, 52, 62 Recess, hole 24 Toe (position)
26 Heel (Position)
30 Shaft 32 Grooved zone 38 with ends 34, 36 Desired flight direction 70 Mounting body 80, 82 Golf ball 84 Correct theoretical arc 88 Incorrect trajectory

Claims (9)

A method for using a golf club having a mounting body secured thereto as a practice aid to improve a golfer's putt swing, the golf club having a head, the mounting body comprising: Having a mounting position for fixing to the head and having at least one surface defining at least one hole therein, wherein the method rests the golf club head before starting the swing, Placing the first golf ball in a holding position in the hole in contact with the ground, and preventing the club head from rising above a distance at least equal to the diameter of the first golf ball on the ground. Performing a backswing with the golf club head, and the golf head has a distance at least equal to the diameter of the golf ball on the ground. And swinging the first golf ball so that the first golf ball remains held in the hole until the time when the first golf ball leaves the hole, and the speed of the golf head Is given a release rate that is directly proportional to the direction of the first golf ball as it leaves the hole during the swing to ascertain whether the striking direction and the swing arc are in the correct direction. A method of monitoring direction and / or speed. The method of claim 1, wherein the at least one hole is defined behind a ball striking surface of the golf head and the mounting body. The second golf ball is positioned in front of a surface on which the ball is hit on the ground, and the second golf ball is hit during the swing to give the ball forward speed. the method of. The method of claim 3, wherein the release rate imparted to the first golf ball is less than a forward velocity imparted to the second golf ball. The direction of velocity imparted to the first ball is approximately equal to the direction of velocity of the second golf ball already flying when the swing is made in the correct direction and in plane. 2. The method according to 2. The method of claim 2, wherein the direction of velocity of the first and second golf balls is approximately equal to a desired direction of hitting the second golf ball. The method of claim 1, wherein a third golf ball is positioned adjacent to the rear surface of the golf club head and the third golf ball is struck at the start of a backswing. The method of claim 7, wherein the third golf ball flies in a direction opposite to the first and second golf balls and in a desired direction of strike when the swing is made in the correct direction and in-plane. A hole is defined in the head, and the golf club head is stationary and in contact with the ground before the golf head starts swinging to a time that rises at least a distance equal to the diameter of the golf ball on the ground. A further golf ball is retained in the hole of the head, and the first golf ball and the further golf ball are separated from the hole to provide a release rate that is directly proportional to the velocity of the golf head. 9. The method according to any one of items 8.

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