fig2 shows a club fixture device 1 of the present invention . device 1 allows the user to customize a golf club by safely retaining the golf club head while allowing the hosel and shaft to be manipulated . device 1 includes a housing 10 , an insert 20 , and a locking mechanism 30 . housing 10 preferably contains an upper housing part 12 and a lower housing part 14 . the terms “ upper ” and “ lower ” are used herein for differentiation purposes only and should not be construed as limiting . as shown in fig3 , housing parts 12 , 14 are preferably hingedly connected , allowing for relative rotation or separation of housing parts 12 , 14 while retaining alignment thereof . insert 20 is removably coupled to housing 10 . insert 20 contains a cavity 26 configured to at least partially contact the golf club head therein . more preferably , cavity 26 is at least partially contoured to the golf club head . still more preferably , cavity 26 substantially envelopes the golf club head . as shown most clearly in fig5 , insert 20 preferably contains an upper insert part 22 and a lower insert part 24 . as shown in fig4 , upper insert part 22 is coupled to upper housing part 12 and lower insert part 24 is coupled to lower housing part 14 . insert parts 22 , 24 are removably coupled to the respective housing parts 12 , 14 . upper insert part 22 preferably contains an upper cavity part 28 , and lower insert part 24 preferably contains a lower cavity part 27 . cavity parts 27 , 28 are configured to matingly form cavity 26 . thus , distinct inserts 20 are readily interchangeable , allowing a specific insert 20 to be used depending upon the club that is to be altered . since each of the inserts 20 is tailored to a specific golf club , device 1 may be used with each of a group of distinct golf clubs and easily achieve a tight grip on each of the distinct clubs . note that different inserts 20 may be required for two club heads of the same make , but with varying loft angles . additionally , inserts 20 for both right - handed and left - handed club heads should be provided . at least one of lower insert part 24 and upper insert part 22 defines a hole 29 configured to allow a shaft coupled to the golf club head to pass therethrough . insert 20 is preferably formed at least in part of a resin . resin is relatively light , reducing the weight of device 1 . this is desirable , especially when device 1 is portable . synthetic resins , which have a polymeric structure , are preferred . preferred synthetic resins include thermoplastic and thermosetting resins . gel time is preferably one hour or less , and the cured resin preferably has a specific gravity of approximately 1 . 7 to approximately 1 . 8 and shore d hardness of approximately 80 to approximately 90 . the resin also preferably has an ultimate compressive strength , which is a measure of the resin &# 39 ; s ability to withstand inward directed forces without failure , greater than 8 , 000 psi and from approximately 8 , 000 psi to approximately 15 , 000 psi . the ultimate flexural strength , which is a measure of the resin &# 39 ; s ability to withstand bending forces without failure , preferably is greater than 5 , 000 psi and from approximately 5 , 000 psi to approximately 11 , 000 psi . the coefficient of thermal expansion , which is a measure of the resin &# 39 ; s change in length per unit length for a one degree fahrenheit change in temperature , preferably is within the range of approximately 1 . 5 · 10 − 5 in ./ in /° f . to approximately 4 . 0 · 10 − 5 in ./ in /° f . the post - cure specifications are measured at room temperature in customary fashion . rp 132 resin is one preferred resin for inserts 20 . rp 132 is a tough , fast - curing polyurethane that offers accurate reproduction of detail . it is an isocyanate , and has a cure time of approximately 5 – 7 minutes . once cured , rp 132 has a specific gravity of 1 . 71 and a shore d hardness of 84 . it has an ultimate compressive strength of 8 , 200 psi , an ultimate flexural strength of 6 , 700 psi , and a coefficient of thermal expansion of 1 . 94 · 10 − 5 in ./ in /° f . other preferred resins for inserts 20 include rp 3262 resin and rp 3269 resin , which are both epoxies . rp 3262 is an easy - to - mix system that provides excellent reproduction of detail . rp 3262 has a cure time of approximately 45 minutes . once cured , rp 3262 has a specific gravity of 1 . 70 and a shore d hardness of 86 . it has an ultimate compressive strength of 14 , 400 psi , an ultimate flexural strength of 10 , 300 psi , and a coefficient of thermal expansion of 2 . 70 · 10 − 5 in ./ in /° f . rp 3269 is a low - shrinkage system with high strength and good machinability . rp 3269 has a cure time of approximately one hour . once cured , rp 3269 has a specific gravity of 1 . 78 and a shore d hardness of 87 . it has an ultimate compressive strength of 14 , 400 psi , an ultimate flexural strength of 13 , 000 psi , and a coefficient of thermal expansion of 3 . 76 · 10 − 5 in ./ in /° f . use of resin for inserts 20 is also desirable since it is relatively easy to work with . for example , inserts 20 may be formed by injection molding resin around a golf club head within a mold of the same dimension as the interior of housing 10 . as is customary in the art , additives typically will be used with the resin during molding . after the resin has set , insert 20 may be cut and removed from the golf club , resulting in mating insert parts 22 , 24 to be used with device 1 . casting is another preferred manufacturing technique to form inserts 20 . furthermore , use of resin allows for safely gripping the golf club to be customized without scratching or otherwise damaging the golf club . locking mechanism 30 is coupled to housing 10 . locking mechanism 30 preferably contains a cross bar 32 , a locking bar 34 , and , optionally , a stator bar 33 . stator bar is coupled to housing 10 at one end , and is hingedly coupled to cross bar 32 at an opposite end . locking bar 34 preferably is hingedly coupled to housing 20 , directly or through stator bar 33 , and is selectively engageable with cross bar 32 to retain the golf club head within housing 20 . cross bar 32 is moveable between an open position , as shown in fig6 , in which housing parts 12 , 14 are relatively moveable , and a closed position , as shown in fig2 , in which housing parts 12 , 14 are relatively fixed . locking mechanism 30 further includes a lock 35 . lock 35 is selectively engageable to retain cross bar 32 in the closed position . in a preferred embodiment , cross bar 32 includes a notch 36 , and locking bar 34 is configured to fit , at least in part , within notch 36 . in the illustrated embodiment , locking bar 34 includes a portion having a reduced diameter that fits within notch 36 . while locking bar 34 is within notch 36 , lock 35 may be engaged to secure locking mechanism 30 in the closed position . preferably , lock 35 is threadably engageable . device 1 may also contain a base member 40 , which allows device 1 to be coupled to another object . as seen in fig2 , base member 40 may be used to secure device 1 to a work station , facilitating use thereof . base member 40 is preferably integral with housing 10 . fig7 shows another preferred embodiment of base member 40 . in this embodiment , base member 40 is t - shaped such that device 1 may be easily secured with a vise , increasing the possible locations of use for device 1 . in use , device 1 is initially positioned as shown in fig3 . locking mechanism 30 is placed in the open position , lock 35 is not engaged , housing part 12 is rotated away from housing part 14 , and insert 20 is not coupled to housing 10 . next , an insert 20 is chosen based upon the club to be manipulated . insert parts 22 , 24 are coupled to the respective housing parts 12 , 14 , as shown in fig4 , in known fashion . when coupled as described and shown , upper insert part 22 rotates toward or away from lower insert part 24 as upper housing part 12 rotates toward or away from lower housing part 14 . when insert parts 22 , 24 are rotated toward each other until they abut , cavity parts 27 , 28 matingly form cavity 26 . while device 1 is in the position illustrated in fig4 , a golf club head is placed within insert 20 , as shown in fig8 . housing parts 22 , 24 are rotated toward each other to the position illustrated in fig6 , closing the club head ( not shown ) within cavity 26 . using the insert illustrated in the figures , the club head is substantially enveloped within cavity 26 . this provides a snug fit , allowing the user to safely exert forces upon the club head as required to manipulate the golf club head as desired . as shown in fig9 , lock bar 34 then is rotated away from housing 10 and cross bar 32 is rotated over housing 10 . next , lock bar 34 is rotated inward , so that , at least in part , locking bar 34 fits within notch 36 of cross bar 32 . lock 35 is then engaged , as shown in fig1 , locking device 1 in the closed position . since device 1 is portable , base member 40 is preferably coupled to a work station . in this manner , the golf club is securely retained within device 1 , and the user may safely customize the golf club . while the preferred embodiments of the present invention have been described above , it should be understood that they have been presented by way of example only , and not of limitation . it will be apparent to persons skilled in the relevant art that various changes in form and detail can be made therein without departing from the spirit and scope of the invention . thus the present invention should not be limited by the above - described exemplary embodiments , but should be defined only in accordance with the following claims and their equivalents .
a club fixture device for facilitating customization of a golf club head is disclosed . the club fixture device includes a housing , an insert , and a locking mechanism . the housing preferably contains two parts connected by a hinge . the insert is selected based upon the golf club to be customized . the insert is preferably divided into two parts to surround the golf club head . each insert part is removably coupled to one of the housing parts . a golf club head is placed within the cavity , the housing is closed , and the locking mechanism retains the device in a closed position .