Abstract:
A customizable golf club head is disclosed herein. The customizable golf club head includes a face component having a face and a flange, a crown-plate attached to the flange, a sole-plate attached to the flange, a skid-plate attached to the sole-plate, a swing-weight member, and a plurality of removable weight members with each of the plurality of weight members positioned within a pocket of the plurality of pockets.

Description:
CROSS REFERENCES TO RELATED APPLICATIONS 
       [0001]    The Present application is a continuation of U.S. patent application Ser. No. 12/266,712, filed on Nov. 7, 2008, which claims priority to U.S. Provisional Patent Application No. 60/986,864, filed on Nov. 9, 2007. 
     
    
     STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
       [0002]    Not Applicable 
       BACKGROUND OF THE INVENTION 
       [0003]    1. Field of the Invention 
         [0004]    The present invention relates to a golf club heads. More specifically, the present invention relates to a golf club head with adjustable weighting, and customizable face properties. 
         [0005]    2. Description of the Related Art 
         [0006]    Currently, customization of drivers to help golfers hit better (longer, straighter, pleasing trajectory) shots is relatively new to the marketplace. Such customization currently includes: different shaft flexes and lengths, different lofts, and different head weighting scenarios. Currently most heads come with the head weighting pre-built into the head such that it cannot be changed. There are some companies that allow screw-in weights that can be changed by the golfer or by the fitting personnel to change a drivers weight distribution (Center of Gravity: CG) to promote desired ball flight tendencies. There currently exists no method to alter the driver&#39;s face angle at address, which visually gives the golfer an indication of the clubs orientation or hit tendency. In addition, current driver models have higher Moments of Inertia (MOI) that correspondingly need a flatter face to hit straighter shots. This flatter face is not as cosmetically appealing as the rounder faces of previous driver designs with lower MOI values. 
       BRIEF SUMMARY OF THE INVENTION 
       [0007]    The primary purpose this invention is to effectively incorporate the following three design features into a driver design. First, visible and removable weights to adjust the center of gravity of the club head using a new and novel method of affixing these weights to the club head. Second, different height skid plates on the sole to alter the club&#39;s face angle at address (as it sits naturally on the ground). Third, a unique face design using bulge and roll values at the center region of the face for hitting straighter and more consistent shots, while having a different bulge and roll at the edge of the face to promote a more pleasing appearance to the golfer. In providing the above design features into a club head design, the golfer should have an improved driver suited to his/her needs, abilities, and preferences to hit better shots. 
         [0008]    Having briefly described the present invention, the above and further objects, features and advantages thereof will be recognized by those skilled in the pertinent art from the following detailed description of the invention when taken in conjunction with the accompanying drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         [0009]      FIG. 1  is an exploded view of a preferred embodiment of the present invention. 
           [0010]      FIG. 1A  is an exploded view of a preferred embodiment of the present invention. 
           [0011]      FIG. 2  is a view of the face. 
           [0012]      FIG. 3  is a cross-sectional view along line B-B of  FIG. 2 . 
           [0013]      FIG. 4  is a cross-sectional view along line D-D of  FIG. 2 . 
           [0014]      FIG. 5  is a cross-sectional view along line C-C of  FIG. 2 . 
           [0015]      FIG. 6  is a cross-sectional view along line A-A of  FIG. 2 . 
           [0016]      FIG. 7  is a heel side of a golf club head of with alternative skid-plates for adjusting the face angle. 
           [0017]      FIG. 8  is a bottom perspective view of a golf club of the present invention. 
           [0018]      FIG. 9  is a heel side of a golf club head. 
           [0019]      FIG. 10  is a cross-sectional view along line A-A of  FIG. 9 . 
           [0020]      FIG. 11  is an enlarged view of circle B of  FIG. 10 . 
           [0021]      FIG. 12  is an isolated side view of a weight member. 
           [0022]      FIG. 13  is an isolated top view of a weight member. 
           [0023]      FIG. 14  is an isolated bottom view of a weight member. 
           [0024]      FIG. 15  is a cut-away view of a tool with jaws extracting a weight member form a pocket of a golf club head of the present invention. 
           [0025]      FIG. 16  is a top perspective view of a golf club head of the present invention. 
           [0026]      FIG. 17  is a top plan view of a golf club head of the present invention. 
           [0027]      FIG. 18  is a bottom plan view of a golf club head of the present invention. 
           [0028]      FIG. 19  is a top perspective view of a golf club head of the present invention with a weight member removed from a pocket. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0029]    The golf club head  20  of the present invention preferably includes a cast titanium face component  22 , a composite crown-plate  24 , a composite sole-plate  26 , an aluminum skid-plate  28 , two stainless steel removable weight members  30   a  and  30   b , one stainless steel swingweight member  30   c , and interchangeable shaft system  40  capability. There is also a tool  50  designed to extract the weight members  30  from the golf club head  20 . The tool  50  is not generally needed to affix the weight members  30  to the golf club head  20 . A preferred embodiment of the golf club head  20  has a volume of 460 cubic centimeters with the Characteristic Time (CT) of the face close to, but not exceeding 257 microsecond (“μS”) limit set by the USGA. 
         [0030]    The mechanical properties of the golf club head  20  showing the CG location, Inertia values and other golf club head information are shown for three weighting scenarios: fade, neutral, and draw. 
         [0031]    There are four basic features of the golf club head  20  of the present invention that make it unique over the prior art. These features are explained in further detail below. 
         [0032]    Most notable of all the features on the golf club head  20  of the present invention are the visible and removable weights. The weight members  30  are preferably composed of a stainless steel material. Alternatively, the weight members  30  are formed by casting, powder metallurgy, metal-injection-molded (MIM), or any other fabrication process that exists to make these metals. Alternatively, the weight members  30  are made from a polymer based material combined with metal particles to increase the density/weight to be equivalent to stainless steel. 
         [0033]    The weight member  30  is preferably inserted into a receiving pocket  32  that has indentations  36  created in the interior of the pocket  32  which allows the tabs on the weight member  30  to “snap” into and hold the weight member  30  securely. The weight member tabs  34  are compressed by the inner surface of the pocket  32  until they have reached the receiving indentations  36  and then they expand and subsequently lock the weight member  30  inside the weight pocket  32 . 
         [0034]    For removal of the weight members  30 , a specially designed tool  50  is inserted between the weight pocket interior wall and the weight member&#39;s tabs  34 . Pushing the tool  50  further into the pocket  32  forces the weight member&#39;s tabs  34  away from the interior wall of the weight pocket  32  until they have been pushed out of the receiving indentations  36  of the pocket wall. The tool  50  is forced further into the pocket  32  until the weight member tabs  34  are captured by the tool  50 , at which point, the tool  50  is pulled from the weight pocket  32  and the captured weight member  30  is removed with the tool  50 . The tool  50  has a release mechanism that opens the jaws  52  of the tool  50  and the weight member  30  is free to be removed from the tool  50 . 
         [0035]    The golf club head  20  of the present invention preferably has multiple weight members  30  with various masses. In a preferred embodiment, the weight members  30  include a 15 g weight member, a 10 g weight member, and a 5 g weight member. The draw bias CG location of the golf club head  20  of the present invention is enabled by placing the 15 g weight member  30  in the heel pocket and the 5 gram weight member  30  into the toe pocket  32 . The neutral bias CG location golf club head  20  of the present invention is enabled by placing the 10 g weight members  30  into both the toe and heel weight pockets  32 . The fade bias CG location golf club head  20  of the present invention is enabled by placing the 5 g weight member  30  in the heel pocket and the 15 gram weight member  30  into the toe pocket  32 . 
         [0036]    The standard skid-plate  28  of the golf club head  20  is designed to allow for the golf club to sit at address at the designed face angle. Two additional skid-plates  28  allow for a 1° open face angle and a 2° open face angle. One of the three skid-plates is permanently affixed to the golf club head  20  after the golfer has temporarily affixed each of them on the golf club head  20  of his or her choice and made a selection of which skid-plate  28  is preferred. The skid-plates  28  have approximately the same weight so the swingweight and performance of the golf club will remain unchanged regardless of which skid-plate  28  is selected to be affixed to the golf club head  20 . 
         [0037]    The variable bulge and roll face  23  is a combination of two faces. The outer face is made with cosmetically pleasing smaller bulge and roll values and is trimmed in the center region by a performance-based inner face that has larger bulge and roll values. The transition at the intersection boundary between the outer and inner faces is made smooth and undetectable by a tangential fillet blend which connects them with a known radius value. The entire face  23  of the golf club head  20  is a combination of a bulge and a roll impact face that works best for the majority of hit locations while outside of this impact region, a face that blends more acceptable with the sole, side, and crown surfaces is used. 
         [0038]    The crown-plate  24  and sole-plate  26  fit onto the exterior surfaces of the face-component  22 . The golf club head  20  has a separate crown-plate  24  and sole-plate  26  bonded on the exterior surfaces of the flange  25  of the face component  22  and to each other along the rearward part of the golf club head  20 . The crown-plate  24  and sole-plate  26  are preferably bonded with VHB adhesive tape. Alternatively, the crown-plate  24  and sole-plate  26  are preferably bonded with a “wet” epoxy adhesive. Yet alternatively, crown-plate  24  and sole-plate  26  are preferably bonded with a combination of both VHB adhesive tape and wet epoxy. The bonding method enables the aesthetic design of the golf club head  20  to be more versatile by not being restricted to any negative draw constraints in the face-component. The use of separate crown-plates  24  and soleplates  26  also lowers the costs. 
         [0039]    A golf club  10  of the present invention preferably utilizes an interchangeable shaft system  40  such as disclosed in Evans, U.S. Pat. No. 7,115,046, Cackett, et al., U.S. Pat. No. 7,083,529, and Hocknell, et al., U.S. Patent Publication Number 2007/0054749, all of which are hereby incorporated by reference in their entireties. 
         [0040]    In general, the moment of inertia, Izz, about the Z axis for the golf club head  20  of the present invention will range from 3500 g-cm 2  to 6000 g-cm 2 , preferably from 4000 g-cm 2  to 5000 g-cm 2 , and most preferably from 4200 g-cm 2  to 4750 g-cm 2 . The moment of inertia, Iyy, about the Y axis for the golf club head  20  of the present invention will range from 2000 g-cm 2  to 4000 g-cm 2 , preferably from 2500 g-cm 2  to 3500 g-cm 2 , and most preferably from 2900 g-cm 2  to 3300 g-cm 2 . The moment of inertia, Ixx, about the X axis for the golf club head  20  of the present invention will range from 2000 g-cm 2  to 4000 g-cm 2 , preferably from 2500 g-cm 2  to 3750 g-cm 2 , and most preferably from 3000 g-cm 2  to 3500 g-cm 2 . 
         [0041]    In general, the golf club head  20  has products of inertia such as disclosed in U.S. Pat. No. 6,425,832, which is hereby incorporated by reference in its entirety. Preferably, each of the products of inertia, Ixy, Ixz and Iyz, of the golf club head  20  have an absolute value less than 100 grams-centimeter squared. Alternatively, at least two of the products of inertia, Ixy, Ixz or Iyz, of the golf club head  20  have an absolute value less than 100 grams-centimeter squared. 
         [0042]    The center of gravity and the moment of inertia of a golf club head  20  are preferably measured using a test frame (X T , Y T , Z T ), and then transformed to a head frame (X H , Y H , Z H ). The center of gravity of a golf club head may be obtained using a center of gravity table having two weight scales thereon, as disclosed in U.S. Pat. No. 6,607,452, entitled High Moment Of Inertia Composite Golf Club, and hereby incorporated by reference in its entirety. If a shaft is present, it is removed and replaced with a hosel cube that has a multitude of faces normal to the axes of the golf club head. Given the weight of the golf club head, the scales allow one to determine the weight distribution of the golf club head when the golf club head is placed on both scales simultaneously and weighed along a particular direction, the X, Y or Z direction. Those skilled in the pertinent art will recognize other methods to determine the center of gravity and moments of inertia of a golf club head. 
         [0043]    In a preferred embodiment, the golf club head  20  has a high coefficient of restitution thereby enabling for greater distance of a golf ball hit with the golf club  10 . The coefficient of restitution (also referred to herein as “COR”) is determined by the following equation: 
         [0000]    
       
         
           
             e 
             = 
             
               
                 
                   v 
                   2 
                 
                 - 
                 
                   v 
                   1 
                 
               
               
                 
                   U 
                   1 
                 
                 - 
                 
                   U 
                   2 
                 
               
             
           
         
       
     
         [0000]    wherein U 1  is the club head velocity prior to impact; U 2  is the golf ball velocity prior to impact which is zero; v 1  is the club head velocity just after separation of the golf ball from the face of the club head; v 2  is the golf ball velocity just after separation of the golf ball from the face of the club head; and e is the coefficient of restitution between the golf ball and the club face. 
         [0044]    The values of e are limited between zero and 1.0 for systems with no energy addition. The coefficient of restitution, e, for a material such as a soft clay or putty would be near zero, while for a perfectly elastic material, where no energy is lost as a result of deformation, the value of e would be 1.0. The present invention provides a club head having a coefficient of restitution ranging from 0.81 to 0.94, as measured under conventional test conditions. 
         [0045]    The coefficient of restitution of the club head  20  ranges from approximately 0.81 to 0.94, preferably ranges from 0.825 to 0.883 and is most preferably 0.845. 
         [0046]    In a preferred embodiment, the face  23  has a varying thickness such as described in U.S. Pat. No. 6,398,666, for a Golf Club Striking Plate With Variable Thickness, which pertinent parts are hereby incorporated by reference. Other alternative embodiments of the thickness of the face  23  are disclosed in U.S. Pat. No. 6,471,603, for a Contoured Golf Club Face and U.S. Pat. No. 6,368,234, for a Golf Club Striking Plate Having Elliptical Regions Of Thickness, which are both owned by Callaway Golf Company and which pertinent parts are hereby incorporated by reference. Alternatively, the face  23  has a uniform thickness. 
         [0047]    The golf club head  20 , when designed as a driver, preferably has a volume from 200 cubic centimeters to 600 cubic centimeters, more preferably from 300 cubic centimeters to 500 cubic centimeters, and most preferably from 420 cubic centimeters to 470 cubic centimeters, with a most preferred volume of 460 cubic centimeters. The volume of the golf club head  20  will also vary between fairway woods (preferably ranging from 3-woods to eleven woods) with smaller volumes than drivers. 
         [0048]    The golf club head  20 , when designed as a driver, preferably has a mass no more than 215 grams, and most preferably a mass of 180 to 215 grams. When the golf club head  20  is designed as a fairway wood, the golf club head preferably has a mass of 135 grams to 200 grams, and preferably from 140 grams to 165 grams. 
       EXAMPLES 
     Fade Embodiment 
     Impact Loft: 12.000 
     Design Loft: 12.000 
     Lie: 56.000 
     Bulge: 11.500 
     Roll: 0.000 
     Face Angle: −1.000 
     Total Mass: 204.868 
     Head Frame Mass Properties: 
     CGX, CGY, CGZ: 0.5745, 0.8272, 1.1317 
     IXX, IYY, TZZ: 3357.66, 2621.47, 4975.30 
     IXY, IXZ, IYZ: 75.72, −281.03, 147.11 
     Hosel Frame Mass Properties: 
     CGX, CGY, CGZ: 0.5745, 1.3186, −1.7829 
     IXX, IYY, IZZ: 3357.66, 3221.10, 4375.66 
     IXY, IXZ, IYZ: 94.37, 275.33, 1036.11 
     Impact Frame Mass Properties: 
     CGX, CGY, CGZ: 1.2633, −0.0287, 0.1883 
     IXX, IYY, IZZ: 3313.28, 2621.47, 5019.68 
     IXY, IXZ, IYZ: −43.48, −72.25, −159.64 
     Impact Center X, Y, Z: −0.7003, 0.8559, 1.2101 
       [0049]    Bulge Roll Apex X, Y, Z: −0.7003, 0.8559, 1.2101 
       Neutral Embodiment 
     Impact Loft: 12.000 
     Design Loft: 12.000 
     Lie: 56.000 
     Bulge: 11.500 
     Roll: 0.000 
     Face Angle: −1.000 
     Total Mass: 205.282 
     Head Frame Mass Properties: 
     CGX, CGY, CGZ: 0.5742, 0.7229, 1.1245 
     IXX, IYY, IZZ: 3337.71, 2618.19, 4958.16 
     IXY, IXZ, IYZ: 43.05, −283.78, 123.97 
     Hosel Frame Mass Properties: 
     CGX, CGY, CGZ: 0.5742, 1.2282, −1.7305 
     IXX, IYY, IZZ: 3337.71, 3234.95, 4341.41 
     IXY, IXZ, IYZ: 123.00, 259.34, 1038.35 
     Impact Frame Mass Properties: 
     CGX, CGY, CGZ: 1.2645, −0.1330, 0.1813 
     IXX, IYY, IZZ: 3292.33, 2618.19, 5003.54 
     IXY, IXZ, IYZ: −16.34, −70.30, −130.21 
     Impact Center X, Y, Z: −0.7003, 0.8559, 1.2101 
       [0050]    Bulge Roll Apex X, Y, Z: −0.7003, 0.8559, 1.2101 
       Draw Embodiment 
     Impact Loft: 12.000 
     Design Loft: 12.000 
     Lie: 56.000 
     Bulge: 11.500 
     Roll: 0.000 
     Face Angle: −1.000 
     Total Mass: 204.874 
     Head Frame Mass Properties: 
     CGX, CGY, CGZ: 0.5727, 0.6176, 1.1189 
     IXX, IYY, IZZ: 3210.34, 2614.51, 4832.02 
     IXY, IXZ, IYZ: 11.41, −285.92, 95.59 
     Hosel Frame Mass Properties: 
     CGX, CGY, CGZ: 0.5727, 1.1377, −1.6762 
     IXX, IYY, TZZ: 3210.34, 3219.28, 4227.24 
     IXY, IXZ, IYZ: 150.42, 243.42, 992.21 
     Impact Frame Mass Properties: 
     CGX, CGY, CGZ: 1.2641, −0.2383, 0.1755 
     IXX, IYY, TZZ: 3164.14, 2614.51, 4878.21 
     IXY, IXZ, IYZ: 8.71, −68.59, −95.88 
     Impact Center X, Y, Z: −0.7003, 0.8559, 1.2101 
     Bulge Roll Apex X, Y, Z: −0.7003, 0.8559, 1.2101 
       [0051]    From the foregoing it is believed that those skilled in the pertinent art will recognize the meritorious advancement of this invention and will readily understand that while the present invention has been described in association with a preferred embodiment thereof, and other embodiments illustrated in the accompanying drawings, numerous changes, modifications and substitutions of equivalents may be made therein without departing from the spirit and scope of this invention which is intended to be unlimited by the foregoing except as may appear in the following appended claims. Therefore, the embodiments of the invention in which an exclusive property or privilege is claimed are defined in the following appended claims.