Patent Publication Number: US-9403066-B2

Title: Adjustable golf club system

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims priority to U.S. Provisional Application No. 61/863,800, filed Aug. 8, 2013, the disclosure of which is hereby incorporated by reference in their entirety. 
    
    
     TECHNICAL FIELD 
     The subject matter disclosed herein relates generally to golf clubs, and more particularly, to an adjustable golf club system including a golf club having a club head with an adjustable lie angle and adjustable connection/insertion point to the clubhead. 
     BACKGROUND OF THE INVENTION 
     The game of golf has continued to increase in popularity over the years with an increase in the number of players playing the sport. At least some known golf clubs are produced with standardized club lengths and club angles that are marketed to a large population of players. Because of the standard lengths and lie angles, each player may be required to adjust their more natural swing and/or swing stance to accommodate the standard golf club. At least some known golf clubs may be custom-made to include predefined customized club lengths to suit a particular player. However, these customized clubs are typically made based on a player&#39;s current swing and swing stance and are not able to accommodate changes in the player&#39;s swing as the skill and strength of the player changes over time. 
     As such, it is desirable to provide a golf club system that may be adjusted to suit the changes in the player&#39;s swing and swing stance over time and allows a golfer to make adjustments to the golf club on his own, to enable the player to continue to improve their golf game while using the same golf club. The present invention is aimed at the problem identified above. 
     SUMMARY OF THE INVENTION 
     In one aspect of the present invention, an adjustable golf club system is provided. The adjustable golf club system includes a club shaft, a club head, a hosel, and an adjustment assembly that is removably coupled to the club head and the hosel to facilitate adjusting an orientation of the hosel with respect to the club head. The club head includes a body including a front club face and an opposite rear club face. Each of the front club face and the rear club face extends between a toe portion and a heel portion along a longitudinal axis. A recessed portion is defined along the rear club face and has an inner surface that defines a club head cavity that extends between the toe portion and the heel portion along the longitudinal axis. The hosel includes a first end and an opposite second end. The first end is adapted to be coupled to the club shaft. The second end includes a fastener head that has an opening that extends through the fastener head. The adjustment assembly includes a sliding member and a hosel fastener that is removably coupled to the sliding member. The sliding member is positioned within the club head cavity and movable along the longitudinal axis between the toe portion and the heel portion. The hosel fastener extends through the fastener head to the sliding member to contact an outer surface of the hosel second end to couple the hosel to the club head. 
     In another aspect of the present invention, an adjustable golf club system is provided. The adjustable golf club system includes a club head, a hosel, and an adjustment assembly that is removably coupled to the club head and the hosel to facilitate adjusting an orientation of the hosel with respect to the club head. The club head includes a body that includes a front club face and an opposite rear club face. Each of the front club face and the rear club face extend between a toe portion and a heel portion along a longitudinal axis. A recessed portion is defined along the rear club face and has an inner surface that defines a club head cavity that extends between the toe portion and the heel portion along the longitudinal axis. The hosel includes a first end and an opposite second end. The first end is adapted to be coupled to a club shaft. The second end includes a fastener head that has an opening extending through the fastener head. The adjustment assembly includes a sliding member and a hosel fastener that is removably coupled to the sliding member. The sliding member is positioned within the club head cavity and movable along the longitudinal axis between the toe portion and the heel portion. The hosel fastener extends through the fastener head to the sliding member to contact an outer surface of the hosel second end to couple the hosel to the club head. 
     In a further aspect of the present invention, an adjustable golf club system is provided. The adjustable golf club system includes a hosel and a shaft attachment assembly that is coupled between the hosel and a club shaft to facilitate removably coupling the club shaft to the hosel. The hosel includes a first end and an opposite second end. The first end includes a shaft connection head that is adapted to be coupled to the club shaft. The shaft connection head includes a shaft opening that extends therethrough. The second end includes a fastener head that is configured to be coupled to a club head. The shaft attachment assembly includes a shaft connection cap and a shaft connection sleeve. The shaft connection cap includes an upper portion that has a first open end, a lower portion that has a second open end, and an inner surface that defines a connection cap cavity that extends between the first open end and the second open end along a centerline axis. The connection cap cavity is configured to receive the club shaft therein through the first open end. The shaft connection sleeve is positioned within the connection cap cavity and extends through the second open end. The shaft connection sleeve has an inner surface that defines an interior cavity that extends therethrough and is configured to receive the club shaft therein. The shaft connection sleeve includes a base member and a plurality of clamping members that extend outwardly from the base member along the centerline axis. The base member has a threaded outer surface configured to engage a corresponding threaded portion of the inner surface of the shaft connection cap to rotatably couple the shaft connection sleeve to the shaft connection cap. The inner surface of the shaft connection cap contacts the clamping members to bias the clamping members towards the club shaft to contact an outer surface of the club shaft to facilitate forming a friction fit between the clamping members and the club shaft. 
     In yet another aspect of the present invention, an adjustable golf club system is provided. The adjustable golf club system includes a club shaft, a club head, and an adjustment assembly that is coupled to the hosel and the club head to facilitate adjusting the orientation of the club head with respect to the club shaft. The club shaft includes a telescoping body that enables the overall length of the club shaft to be adjusted. The adjustment assembly is configured to enable the orientation of the club head to be adjusted with respect to the club shaft to facilitate adjusting the lie angle of the club head and the shaft position within the clubhead (i.e. heel-shafted to center-shafted). The position of the shaft allows the golfer to customize their stroke. The club head includes one or more removable weighted plates to allow a player to adjust the weight of the club head by adding or removing weighted plates from the club head. The removable weighted plates also allow the golfer to adjust the heel or toe weight of the clubhead. This is critical to create the appropriate balance/weight distribution within the putter head relative to the shaft position along the shaft axis. 
     Telescoping Shaft. The Telescoping Shaft will allow the putter to adjust from 30″ to 40″ and any place in between. Using a locking collar, the grip will be secured to the prescribed height using the threaded insert allowing the grip to have a solid feel. 
     Replaceable Hosel. A threaded insert will be installed at the tip of the shaft that will allow for the male-end of the hosel to secure into the shaft without the use of epoxy. This will speed up fittings and allow the golfer to immediately make adjustments and test his/her customized putter with immediate feedback. Various hosel designs will be created with the male-end thread so that the golfer can select and switch the hosel of his/her choice at any moment. 
     Weighted Insert Plate. The weighted insert plate will be installed by unscrewing the each bolt on the heel and tow of the putter. The back of the putter will come off and the weighted insert plate will be installed. The back of the putter will go back on and the bolts will be secured so that the putter is complete. This will allow the golfer to play with a weighted putter that fits his/her preference. A toe weight and heel weight will be created to fit together or be used separately. This allows the golfer to match the weight to their natural stroke. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Other advantages of the present invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein: 
         FIG. 1  is a perspective view of an adjustable golf club system, according to an embodiment of the present invention; 
         FIG. 2  is a rear view of a portion of the adjustable golf club system shown in  FIG. 1 ; according to an embodiment of the present invention; 
         FIG. 3  is a sectional view of the adjustable golf club system shown in  FIG. 2  and taken along section line  3 - 3 ; 
         FIG. 4  is a schematic view of the adjustable golf club system shown in  FIG. 1  and taken along area  4 ; 
         FIG. 5  is another rear view of the adjustable golf club system shown in  FIG. 1 , according to an embodiment of the present invention; 
         FIG. 6  is a sectional view of the adjustable golf club system shown in  FIG. 5  and taken along section line  6 - 6 ; 
         FIG. 7  is another sectional view of the adjustable golf club system in  FIG. 6 ; 
         FIG. 8  is an exploded sectional view of the adjustable golf club system shown in  FIG. 7 ; 
         FIG. 9  is a schematic view of a portion of the adjustable golf club system shown in  FIG. 4 , according to an embodiment of the present invention; 
         FIG. 10  is another schematic view of a portion of the adjustable golf club system shown in  FIG. 4 , according to an embodiment of the present invention; 
         FIG. 11  is a sectional view of a portion of the adjustable golf club system shown in  FIG. 10  and taken along section line  11 - 11 ; 
         FIGS. 12 and 13  are enlarged perspective views of the adjustable golf club system shown in  FIG. 1 , according to an embodiment of the present invention; 
         FIG. 14  is a top view of a portion of the adjustable golf club system shown in  FIG. 1 , according to an embodiment of the present invention; 
         FIG. 15  is a perspective view of a portion of the adjustable golf club system shown in  FIG. 1 , according to an embodiment of the present invention; 
         FIG. 16  is an exploded schematic view of the adjustable golf club system shown in  FIG. 15 ; 
         FIG. 17  is a top view of the adjustable golf club system shown in  FIG. 15 ; 
         FIG. 18  is a rear view of the adjustable golf club system shown in  FIG. 15 ; and 
         FIG. 19  is a side view of the adjustable golf club system shown in  FIG. 15 . 
     
    
    
     Corresponding reference characters indicate corresponding parts throughout the drawings. 
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     With reference to the drawings and in operation, the invention overcomes at least some disadvantages of known golf clubs by providing a golf club system that enables a player to adjust an overall height of the golf club and an orientation of the club head to customize the golf club to suit the height, stance, swing path, and personal preference of the player. More specifically, the golf club system includes a telescoping club shaft with a variable length to facilitate adjusting a overall length of the golf club, replaceable hosels for visual aesthetics, and an adjustment assembly coupled to the club shaft and the club head to enable an orientation of the club head to be adjusted with respect to the club shaft to modify a lie angle of the club head and an orientation of the club face with respect to the player. By providing an adjustable golf club system a player is able to adjust the overall club length and lie angle based on a change in the stance, swing path, and personal preferences of the player over time, thus increasing the useful life of the golf club. 
     In general, the adjustable golf club system  10  includes an Infinit Chamber that is designed to allow infinite possibilities for putter lie angles and shaft/grip position, and a sliding mechanism to give putter unlimited positions to allow putters to be used by right-handed or left-handed players. A putter face is designed to be heel and toe balanced and allows the putter to be used right-handed or left-handed. An interchangeable sliding key is provided to allow the putter head to be interchangeable to give a traditional look or a complete custom look. The head designs can range from mallets, traditional, blades in addition to custom design heads. The sliding key provides a secured interlocking track that gives the putter a solid feel upon attaching the back side of the putter head. The putter head includes an interchangeable backing that allows putter to be a mallet, Blade, Traditional or Custom Putter Head. The system also includes an interchangeable hosel that can be interchangeable to suit golfers&#39; preferences. The hosel includes attaching point at bottom of the hosel that will be secured to putter head with a lie locking bolt. The hosel will attach to the club shaft at the top of the hosel with a lie adjusted clamp and shaft expansion bolt. A shaft connection sleeve (male) allows the putter shaft to secure to putter head, slides over shaft tip and screws into internal locking mechanism. A threaded exterior of shaft connection sleeve allows a shaft connection cap to securely thread and lock shaft in place. The internal locking mechanism slides inside of the shaft, allows the shaft connection sleeve to thread on the exterior of internal locking mechanism, and provides a port for exploding pressure from the inside of the shaft, allows a shaft expansion bolt to thread inside and place pressure and friction along the inner walls of the shaft, and may fit inside of any shaft size from 0.370 to 0.395 diameter. 
     The shaft connection cap (female) slides over the shaft connection sleeve and secures the club shaft to the hosel. The shaft connection cap provides pressure towards the exterior diameter of the shaft and allows the hosel to be interchangeable without using adhesive or epoxy. A shaft expansion bolt threads inside the internal locking mechanism. Once inside the club shaft, the golfer may tighten with a shaft locking bolt. As the shaft locking bolt is being tightened, the shaft expansion bolt is expanding the tip of internal locking mechanism causing pressure to which will provide a secure wedge fit against the inside of the putter shaft. The shaft locking bolt screws into the center of the internal locking mechanism connecting the shaft to the hosel. The shaft locking bolt has same hex configuration as other bolts in the system design. A locking barrel sliding member is provided to absorb the weight of the hosel to allow for a solid feel during the putting stroke. The barrel slides from heel to toe inside of the Infinit Chamber and has the ability to add weight on either side of it. Balancing weights made of tungsten and/or rubber are designed to add weight as needed to counter balance putter head/shaft weight as it is interchanged. The weights will vary in weight amount and will have the ability to add to each other filling up the Infinit Chamber. A washer bolt allows a lie locking bolt to secure to putter face for added strength. the lie locking bolt is spring loaded to allow resistance during loosening and can be tightened once golfer adjust the putter lie to the angel that golfer chooses. The lie locking bolt goes thru the interchangeable hosel opening and securely into the locking barrel. The locking bolt may be accessed using a using an Infinit Key. Rear locking bolts secure the interchangeable backing to the putter face utilizing the interchangeable sliding key. Rear locking bolts are locked by turning Infinit Key clockwise. The Infinit Key is provided with the putter to tighten and loosen interchangeable parts within the putter. A small key may be used for the rear locking bolts. A large key may be used for the loft locking bolt and the shaft locking bolt. 
     In one embodiment, the adjustable golf club system  10  includes a golf club that includes a club shaft, an adjustable club head, a hosel that is removably coupled between the club shaft and the club head, and an adjustment assembly that is coupled to the hosel and the club head to facilitate adjusting the orientation of the club head with respect to the club shaft. The club shaft includes a telescoping body that enables the overall length of the club shaft to be adjusted based on the height and stance of the player using the club. In addition, the adjustment assembly enables the orientation of the club head to be modified with respect to the club shaft to facilitate adjusting the lie angle of the club face based on the stance, stroke, and swing path of the player. In addition the adjustment assembly enables a player to modify the orientation of the club shaft with respect to the club face such that the golf club may be used by both right-handed and left-handed players. In addition, the adjustable golf club system  10  also includes a replaceable hosel to enable a player to replace the hosel used within the golf club system to adjust an orientation of the club head with respect to a centerline axis of the club shaft or for visual aesthetics, and to adjust the overall length of the golf club. Moreover, the club head includes one or more removable weighed plates that allows a player to adjust the weight of the club head by adding or removing the weighted plates from the club head. This allows the golfer to enhance their swing path (i.e. straight back/straight thru or inside/out, etc.). 
     A selected embodiment of the invention will now be explained with reference to the drawings. It will be apparent to those skilled in the art from this disclosure that the following description of the embodiment of the invention is provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents. 
       FIG. 1  is a perspective view of the adjustable golf club system  10 , according to an embodiment of the present invention.  FIG. 2  is a rear view of a portion of the adjustable golf club system  10 .  FIG. 3  is a sectional view of the adjustable golf club system  10  taken along section line  3 - 3  in  FIG. 2 .  FIG. 4  is a sectional view of the adjustable golf club system  10  taken along area  4  in  FIG. 1 .  FIG. 5  is another rear view of the adjustable golf club system  10 , according to an embodiment of the present invention.  FIG. 6  is a sectional view of the adjustable golf club system  10  taken along section line  6 - 6  in  FIG. 5 .  FIG. 7  is another sectional view of the adjustable golf club system  10 .  FIG. 8  is an exploded sectional view of a portion of the adjustable golf club system  10 .  FIGS. 9 and 10  are schematic views of a portion of the adjustable golf club system  10 .  FIG. 11  is a sectional view of a portion of the adjustable golf club system  10  taken along section line  11 - 11  in  FIG. 10 .  FIGS. 12-14  are enlarged perspective views of the adjustable golf club system  10 . 
     In the illustrated embodiment, the adjustable golf club system  10  includes a club head  12 , a club shaft  14 , a hosel  16 , and an adjustment assembly  18  that is coupled to the hosel  16  and the club head  12  to facilitate adjusting an orientation of the club head  12  with respect to the club shaft  14 . The club shaft  14  includes a telescoping shaft body  20  that extends between a first end  22  and a second end  24  and has a length L 1  measured along a centerline axis  26  between the first end  22  and the second end  24 . The shaft body  20  includes an upper section  28  and a lower section  30  that is rotatably coupled to the upper section  28 . The upper section  28  includes an inner surface  31  that defines a shaft cavity  32  therein. The shaft cavity  32  is configured to receive a portion of the lower section  30  therein. The lower section  30  includes a threaded outer surface  33  that is configured to engage a corresponding threaded portion of the inner surface  31  of the upper section  28 . The upper section  28  is adapted to rotate with respect to the lower section  30  such that a rotation of the upper section  28  in a first direction increases the length of the shaft body  20 , and a rotation of the upper section  28  in an opposite second direction decreases the overall length of the shaft body  20 . The upper section  28  also includes a locking collar  34  that is configured to engage the outer surface of the lower section  30  to facilitate coupling the upper section  28  to the lower section  30  via a friction fit formed between the locking collar  34  and the outer surface of the lower section  30 . The lower section  30  includes a recessed portion  36  that is defined at the club shaft second end  24 . The recessed portion  36  includes an inner surface  37  that defines an interior chamber  39  that is configured to receive a portion of the hosel  16  therein. The club shaft  14  also includes a grip  38  that is coupled to an outer surface of the upper section  28  to facilitate a player grasping the club shaft  14 . 
     In the illustrated embodiment, the hosel  16  includes a body  40  that extends between a first end  42  and a second end  44 . The hosel first end  42  includes a threaded outer surface  43  that is configured to be inserted into the interior chamber  39  of the shaft lower section recessed portion  36 . The threaded outer surface of the hosel first end  42  is configured to engage a corresponding threaded portion of the interior chamber  39  to coupled the club shaft  14  to the hosel  16 . Referring to  FIG. 9 , in one embodiment the hosel first end  42  may include a hosel recessed portion  45 . The shaft lower section  30  may include a threaded protection  47  that is configured to engage a corresponding threaded section defined within the hosel recessed portion  45 . Referring to  FIGS. 10 and 11 , the system  10  may include an O-ring gasket  49  that is positioned within the hosel recessed portion  45  and is sized and shaped to receive the club shaft  14  therein to facilitate forming a friction fit between the hosel first end  42  the O-ring gasket  49 , and the club shaft  14 . A locking collar  34  may be used to engage the outer surface of the hosel  16  and the club shaft  14  to facilitate coupling the hosel  16  to the club shaft  14 . 
     In the illustrated embodiment, the hosel second end  44  includes a fastener head  46  that is adapted to be coupled to the adjustment assembly  18 . The fastener head  46  includes a fastener opening  48  that extends through the fastener head  46  and is sized and shaped to receive a portion of the adjustment assembly  18  therethrough. In the illustrated embodiment, the hosel  16  includes an arcuate outer surface  50  such that the hosel second end  44  is offset a distance D 1  from the hosel first end  42  with respect to the centerline axis  26 . In addition, the hosel  16  is removably coupled to the club shaft  14  and the club head  12  to enable a plurality of hosels  16 , each having a different length between the first end  42  and the second end  44  and a different offset distance D 1 , to be used with the adjustable golf club system  10 . By providing a system  10  that accommodates various hosel  16  designs, the offset distance of the club head  12  from the club shaft  14  may be modified. 
     In the illustrated embodiment, the club head  12  includes a putter head  52 . In another embodiment, the club head  12  may include any suitable golf club head having any suitable club face angle. The club head  12  includes a body  51  having a forward member  54  and an aft member  56 . In one embodiment, the body  51  is unitarily formed (shown in  FIGS. 2-4 ). In another embodiment, the aft member  56  is removably coupled to the forward member  54  to form the body  51  (shown in  FIGS. 5-8 ). In the illustrated embodiment, the forward member  54  extends between a heel portion  58  and a toe portion  60  along a longitudinal axis  62 , and includes a front club face  64  and a rear club face  66 . The front club face  64  and the rear club face  66  each extend between the heel portion  58  and the toe portion  60 . A recessed portion  63  is defined within the forward member  54  and extends along the rear club face  66  between the heel portion  58  and the toe portion  60  along the longitudinal axis  62 . The recessed portion  63  includes a slot  68  that is defined along the rear club face  66  and has an inner surface  65  that defines a club head cavity  67  that extends between the toe portion  60  and the heel portion  58  along the longitudinal axis  62 . In one embodiment, the club head cavity  67  may have a substantially rectangular shape (shown in  FIGS. 3 and 4 ). In another embodiment, the club head cavity  67  may have a substantially cylindrical shape (shown in  FIGS. 15-19 ). In one embodiment, the forward member  54  may also include a toe opening  69  defined along an outer surface of the toe portion  60  and/or a heel opening  71  defined along an outer surface of the heel portion  58  to provide access to the club head cavity  67  through the toe portion  60  and/or the heel portion  58 , respectively. The toe opening  69  and/or the heel opening  71  may be sized and shaped to receive a portion of the adjustment assembly  18  therethrough to facilitate positioning the adjustment assembly  18  within the club head cavity  67 . 
     In one embodiment, the aft member  56  may be coupled to the forward member  54  with a plurality of screws  70  that are coupled to the heel portion  58  and the toe portion  60 , respectively. In the illustrated embodiment, the club head  12  also includes one or more removable weighted plates  72  that are coupled between the aft member  56  and the forward member  54  for adjusting an overall weight of the club head  12 . Moreover, the weighted plates  72  are coupled to the forward member  54  and the aft member  56  with the screws  70 . In one embodiment, the aft member  56  and/or the forward member  54  may include one or more grooves  73  that are sized and shaped to receive one or more weighted plates  72  therein. In another embodiment, the weighted plates  72  may be positioned between the aft member  56  and the forward member  54 . In the illustrated embodiment, the player may adjust the overall weight of the club head  12  by adding or removing weighted plates  72  from the club head  12 . More specifically, the player removes the screws  70  from the club head  12  to access the weighted plates  72 , positions a desired number of weighted plates  72  between the forward member  54  and the aft member  56 , and replaces the screws  70  to couple the forward member, the aft member  56 , and the weighted plates  72  together. 
     In the illustrated embodiment, the adjustment assembly  18  includes a sliding member  74  and a hosel fastener  76  that is removably coupled to the sliding member  74  to facilitate coupling the hosel  16  to the sliding member  74  and the club head  12 . The club head cavity  67  is sized and shaped to receive the sliding member  74  therein to enable the sliding member  74  to be positioned at any location along the longitudinal axis  62  within the club head cavity  67 . The sliding member  74  includes an opening  75  that is sized and shaped to receive the hosel fastener  76  therein to facilitate coupling the hosel fastener  76  to the sliding member  74 . In the illustrated embodiment, the adjustment assembly  18  also includes a spring  78  that is positioned about an outer surface of the hosel fastener  76 . The spring  78  is adapted to contact the hosel fastener  76  and the sliding member  74  to bias the hosel fastener  76  outwardly from the sliding member  74  to facilitate decoupling the hosel  16  from the club head  12 . In the illustrated embodiment, the hosel fastener  76  is inserted through the hosel fastener head opening  48  to pivotably couple the hosel  16  to the club head  12 . More specifically, the hosel fastener  76  extends through the fastener head  46  and is coupled to the sliding member  74  such that a pivot point  80  is defined through the hosel fastener  76  to enable the hosel  16  to pivot with respect to the club head  12  about the pivot point  80 . In one embodiment, the hosel fastener  76  may be a screw. Alternatively, the hosel fastener  76  may be any suitable attachment assembly that enables the adjustment assembly  18  to function as described herein. 
     During operation, in the illustrated embodiment, a player will operate the adjustment assembly  18  to move the sliding member  74  in a direction  82  along the longitudinal axis  62  to position the hosel second end  44  at a desired location with respect to the club head  12 . The player may also rotate the hosel  16  about the pivot point  80  to adjust the hosel  16  to a desired lie angle  84  that is defined between the longitudinal axis  62  and the centerline axis  26  of the club shaft  14 . Upon positioning the hosel  16  at the desired position and lie angle  84  the player tightens the hosel fastener  76  to secure the hosel  16  to the club head  12 . By providing an adjustment assembly  18  that enables a player to adjust an orientation of the club shaft  14  with respect to the club head  12 , the player may adjust the lie angle  84  of the club head  12  and adjust the orientation of the club face  64  with respect to the player to enable the adjustable golf club system  10  to be used by left-handed and right-handed players. 
       FIG. 15  is another perspective view of a portion of the adjustable golf club system  10 , according to an embodiment of the present invention.  FIG. 16  is an exploded schematic view of the adjustable golf club system  10  shown in  FIG. 15 .  FIGS. 17-19  are various views of the adjustable golf club system  10 . In the illustrated embodiment, the adjustable golf club system  10  includes the club head  12 , the hosel  16 , the adjustment assembly  18  that is coupled to the club head  12  and the hosel  16 , and a shaft attachment assembly  100  that is coupled between the hosel  16  and the club shaft  14  to facilitate removably coupling the club shaft  14  to the hosel  16 . 
     The club head  12  includes the body  51  including the front club face  64  and the opposite rear club face  66 . The front club face  64  and the rear club face  66  each extend between the toe portion  60  and the heel portion  58  along the longitudinal axis  62 . The recessed portion  63  is defined along the rear club face  66  and has an inner surface  65  that defines the club head cavity  67 . The club head cavity  67  extends between the toe portion  60  and the heel portion  58  along the longitudinal axis  62  and includes a substantially cylindrical shape. In the illustrated embodiment, the club head  12  includes a toe opening  69  defined along an outer surface of the toe portion  60  to provide access to the club head cavity  67 . The toe opening  69  is configured to receive the sliding member  74  therethrough to enable the sliding member  74  to be inserted through the toe opening  69  and into the club head cavity  67 . In one embodiment, the club head  12  may also include the heel opening  71  defined along an outer surface of the heel portion  58  and sized to receive the sliding member  74  therethrough. 
     In the illustrated embodiment, the club head  12  includes the forward member  54  and the aft member  56  that is removably coupled to the forward member  54 . The forward member includes the club head cavity  67  defined therein. The aft member  56  includes an outer surface  102  and a projection  104  that extends outwardly from the aft member outer surface  102  and orientated substantially parallel to the longitudinal axis  62 . The forward member  54  includes a groove  106  that is defined within an outer surface  108  of the forward member  54  and that extends between the toe portion  60  and the heel portion  58 . The groove  106  is sized and shaped to receive the projection  104  therein to facilitate coupling the aft member  56  to the forward member  54 . The club head  12  may also include a pair of head locking bolts  110  to removably couple the aft member  56  to the forward member  54 . Each head locking bolt  110  is inserted through corresponding opening  112  that extends through the aft member  56  and is received in a corresponding bolt hole  114  defined within the forward member  54 . Each head locking bolt  110  may include a recessed portion having an hexagonal shape to sized and shaped to received a tool (not shown) therein to enable a use to rotate the head locking bolt  110  to facilitate coupling the aft member  56  to the forward member  54 . 
     In the illustrated embodiment, the hosel  16  includes the first end  42  and the opposite second end  44 . The first end  42  includes a shaft connection head  116  that is adapted to be coupled to the club shaft  14  and includes a shaft opening  118  that extends through the shaft connection head  116 . The shaft opening  118  is configured to receive a portion of the shaft attachment assembly  100  therethrough to facilitate coupling the hosel  16  to the club shaft  14 . The second end  44  includes the fastener head  46  having a fastener opening  48  that extends through the fastener head  46 . In the illustrated embodiment, the shaft opening  118  is orientated within a first coordinate plane and the fastener opening  48  orientated is within a second coordinate plane that is perpendicular to the first coordinate plane. 
     The adjustment assembly  18  is removably coupled to the club head  12  and the hosel  16  to facilitate adjusting an orientation of the hosel  16  with respect to the club head  12 . In the illustrated embodiment, the adjustment assembly  18  includes the sliding member  74  and the hosel fastener  76  that is removably coupled to the sliding member  74 . The sliding member  74  includes a substantially cylindrical shape and is positioned within the club head cavity  67  and movable along the longitudinal axis  62  between the toe portion  60  and the heel portion  58 . The hosel fastener  76  extends through the fastener head  46  towards the sliding member  74  to contact an outer surface of the fastener head  46  to couple the hosel  16  to the club head  12 . 
     In the illustrated embodiment, the hosel fastener  76  includes a washer bolt  120  and a hosel locking bolt  122 . The washer bolt  120  extends through the fastener head  46  towards the sliding member  74  and includes a center cavity  124  that extends through the washer bolt  120 . The hosel locking bolt  122  is inserted through the center cavity  124  and extends through the washer bolt  120  towards the sliding member  74 . The sliding member  74  includes a threaded recessed hole  75  that is sized and shaped to receive a corresponding threaded portion of the hosel locking bolt  122  therein to facilitate coupling the hosel second end  44  to the club head  12 . In one embodiment, the hosel locking bolt  122  may include a recessed portion having an hexagonal shape to sized and shaped to received a tool (not shown) therein to enable a use to rotate the hosel locking bolt  122  to facilitate coupling the hosel  16  to the club head  12 . 
     A balancing weight  126  is coupled to the sliding member  74  and includes an outer surface having a shape that is configured to be received within the club head cavity  67 . In one embodiment, the system  10  may include a pair of balancing weights  126  that are coupled to opposing ends of the sliding member  74 . 
     In the illustrated embodiment, the shaft attachment assembly  100  includes a shaft connection cap  128 , a shaft connection sleeve  130  adapted to be positioned within the shaft connection cap  128 , and an internal locking device  132  that is configured to be inserted within the shaft connection sleeve  130 . In addition, the shaft attachment assembly  100  includes an expansion bolt  134  and a shaft locking bolt  136  each of which are configured to be inserted within the internal locking device  132 . 
     The shaft connection cap  128  includes an upper portion  138  and a lower portion  140 . The upper portion  138  includes a first open end  142 . The lower portion  140  includes a second open end  144 . The shaft connection cap  128  also includes an inner surface  146  that defines a connection cap cavity  148  that extends between the first open end  142  and the second open end  144  along a centerline axis  150 . The connection cap cavity  148  is sized and shaped to receive the club shaft  14  therein through the first open end  142 . In the illustrated embodiment, the first open end  142  has a first diameter and the second open end  144  has a second diameter that is larger than the first diameter such that the upper portion  138  has a substantially frustoconical shape converging from the lower portion towards the first open end  142 . 
     The shaft connection sleeve  130  is positioned within the connection cap cavity  148  and extends through the second open end  144 . The shaft connection sleeve  130  includes an inner surface  152  that defines an interior cavity  154  that extends through the shaft connection sleeve  130  and is sized and shaped to receive the club shaft  14  therein. The shaft connection sleeve  130  includes a base member  156  and a plurality of clamping members  158  that extend outwardly from the base member  156  along the centerline axis  150 . The clamping members  158  are orientated and spaced about the centerline axis  150 . The base member  156  has a threaded outer surface that is configured to engage a corresponding threaded portion of the inner surface  146  of the shaft connection cap  128  to rotatably couple the shaft connection sleeve  130  to the shaft connection cap  128 . The inner surface  146  of the shaft connection cap  128  is configured to contact the clamping members  158  to bias the clamping members  158  towards the club shaft  14  to contact an outer surface of the club shaft  14  to facilitate forming a friction fit between the clamping members  158  and the club shaft  14 . Moreover, the shaft connection cap  128  extends over a portion of the outer surface of the shaft connection sleeve  130  to contact the corresponding threaded outer surface of the base member  156 . As the shaft connection cap  128  is rotated about the centerline axis  150 , the shaft connection cap  128  is moved towards the base member  156  allowing the upper portion  138  of the shaft connection cap  128  to contact the clamping member  158  to form a friction fit between the shaft connection cap  128 , the clamping members  158 , and the club shaft  14 . 
     The internal locking device  132  includes an inner surface that extends between a top end  162  and a bottom end  164  and defines an expansion cavity  166  that extends between the top end  162  and the bottom end  164  along the centerline axis  150 . The internal locking device  132  also includes a plurality of expansion members  168  that extend outwardly from a main body  170  along the centerline axis  150 . The expansion members  168  are orientated about the centerline axis  150  and define an outer surface of the internal locking device  132  that is sized and shaped to be inserted within an interior chamber  39  of the club shaft  14 . The main body  170  includes a threaded outer surface that is configured to engage a corresponding threaded portion of the inner surface of the shaft connection sleeve  130 . 
     The expansion bolt  134  is configured to be inserted within the expansion cavity  166  and to contact the expansion members  168  to bias the expansion members  168  outwardly towards the inner surface of the club shaft  14  as the expansion bolt  134  is moved along the centerline axis  150  and towards the club shaft  14 . The shaft locking bolt  136  is configured to be inserted through the bottom end  164  of the internal locking device  132  and within the expansion cavity  166  to contact the expansion bolt  134  to move the expansion bolt  134  along the centerline axis  150  and towards the top end  162  of the internal locking device  132 . The shaft locking bolt  136  also includes a threaded outer surface that is configured to engage a corresponding threaded portion of the inner surface of the internal locking device  132  to rotatably couple the shaft locking bolt  136  to the internal locking device  132 . 
     In the illustrated embodiment, the shaft locking bolt  136  extends through the shaft opening  118  defined in the hosel shaft connection head  116  and contacts the shaft connection head  116  to coupled the hosel  16  to the shaft attachment assembly  100  and the club shaft  14 . 
     Exemplary embodiments of an adjustable golf club system are described above in detail. The apparatus is not limited to the specific embodiments described herein, but rather, components of the apparatus may be utilized independently and separately from other components and/or steps described herein. For example, the apparatus may also be used in combination with other golf club systems, and are not limited to practice with only the golf club system as described herein. Rather, the exemplary embodiment can be implemented and utilized in connection with many other applications. 
     This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal language of the claims. 
     While the invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention may be practiced with modification within the spirit and scope of the claims.