Abstract:
A golf club having multiple interchangeable striking face plate inserts and a movable weight element positioned therewithin. A number of different angularly inclined striker face plates are keyed to a club head body allowing the club to function as a multiple club configuration. Adjustable weight inserts are provided which impart their kinetic energy during the club swing to increase striking power of the club with the target ball during use.

Description:
BACKGROUND OF THE INVENTION 
   1. Technical Field 
   This invention relates directly to golf clubs, specifically golf club heads which have enhanced structural performance characteristic and play features. 
   2. Description of Prior Art 
   Golf clubs have, in recent years, undergone a variety of technical improvements to enhance the performance characteristic of the golfer&#39;s play. Many significant improvements have been made concerning the material used in the golf heads as well as redistribution of weight or mass within the club itself. It has been found by providing additional weight or weight that is active, such clubs have improved performance, specifically in the length of the drive which is important and critical in the game of golf. 
   Other technical improvements include the reduction of weight in the golf club head to increase club head speed and presumably accuracy in relation to the sweet spot of the club to impart optimal projectory and distance of the ball. 
   Prior art devices of this type can be seen, for example, in U.S. Pat. Nos. 4,461,481, 5,366,222, 6,514,154, 6,641,490, 6,551,199, 6,872,148, 6,743,117 and U.S. Patent Publication 2002/013576 A1 and 2007/0087860 A1. 
   In U.S. Pat. No. 4,461,481 a golf club device is disclosed and directed towards having a cylindrical weight slidably positioned within the club head for improved ball striking capabilities. 
   U.S. Pat. No. 5,366,222 discloses a golf club head having a head cavity with a movable weight positioned within. 
   U.S. Pat. No. 6,514,154 claims a golf club having an adjustable weight rotatably mounted within a threaded bore. 
   U.S. Pat. No. 6,641,490 shows a golf club head with a U-shaped hollow passageway in which a flowable solid is captured. 
   U.S. Pat. No. 6,551,199 an inertia capsule for a golf club is described having an elongated capsule filled with mercury that is flowably disposed during use, transferring mass appropriately therewithin. 
   A golf club in U.S. Pat. No. 6,872,148 has a movable member with an explosive charge in the head which activates during club head movement. 
   U.S. Pat. No. 6,743,117 claims a golf head with a multiple face insert that can be replaceably inserted on the club head. 
   U.S. Patent Publication 2002/2013576 A1 discloses a golf club head with an adjustable weight having a pair of tubular weight receiving chambers within. 
   Finally, U.S. Patent Publication 2007/0087860 A1 illustrates a golf club head having an enlarged striking power by use of multiple spring loaded weight elements with corresponding guide bores. 
   SUMMARY OF THE INVENTION 
   A dynamic golf club driver system having club heads with movable weights in a central bore and interchangeable club head face inserts. The weight is movable against the club head face insert that is selectively engaged and locked into use position by releasable fasteners. Different weight mass elements can be used depending on force enhancement required. Additionally, the face inserts have multiple configurations with different angular imparted target strike surface to emulate different club performance in a single interchangeable club configuration system. 

   
     DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a perspective view of the club head of the invention with a face insert shown in broken lines positioned for insertion. 
       FIG. 2  is a partial top plan view of a club head of the invention with interchangeable dynamic striker face plates shown in broken lines. 
       FIG. 3  is a sectional view of the club head of the invention with alternate interchangeable striker plates shown in broken lines. 
       FIG. 4  is a front elevational view of the club head body of the invention. 
       FIG. 5  is an enlarged partial sectional view illustrating the lock and release pin mechanisms of the club head of the invention. 
       FIG. 6  is an enlarged partial perspective view of an alternate club head of the invention. 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   Referring to  FIGS. 1 ,  2  and  3  of the drawings, a golf head  10  of the invention can be seen having a main body member  11  with an attached club shaft  12  extending therefrom. The main body member  11  has an upper access surface  12 A, oppositely disposed bottom  13  and a club face surface  14 . A pair of spaced parallel vertical mounting channels  15  are formed in the club face surface  14  and extend from the upper surface  12 A to a point in spaced relation to the bottom  13 , as best seen in  FIG. 3  of the drawings. 
   Each of the mounting channels  15  are keyed to accept a corresponding elongated key shaped flanges  16 A and  16 B formed on an interchangeable ball striker plate  17  as will be described in greater detail hereinafter. 
   A locking pin registration bore  18  extends from the upper surface  12  adjacent to and intersecting each of the hereinbefore described key mounting channels  15 . A pair of releasable locking pin assemblies  19  are frictionally fit respectively into the registration bores  18  with each having a spring loaded activation and release shaft  19 A with an area of reduced annular diameter at  19 B. A pair of locking spheres  19 C are movable transversely within the locking pin  19  in relation to the orientation of the release shaft  19 A and extend outwardly beyond the annular surface thereof so as to registerably engage with a corresponding shaped detent formed in the interchangeable ball striker plate  17  as best seen in  FIG. 5  of the drawings. The locking pin assemblies  19  allow for selective depression of the shaft  19 A via an end access point  20  with an activation release tool  21 . The construction and function of such locking pin assemblies  19  are well known and understood by those skilled in the art and are commercially available from a variety of manufacturing sources such as the Jergens Company of Cleveland, Ohio. 
   A club head acceleration assembly  22  is positioned within the club body member  11  having a slide bore  23  extending horizontally from the club face surface  14  inwardly a predetermined distance, best seen in  FIG. 3  of the drawings. The slide bore  23  provides a track pathway for a movable weight  24  which is of an annular transverse dimension less than that of the interior dimension of the slide bore  23  so as to freely be movable therewithin. The drive weight  24  is of multiple weight configurations and lengths so that the user can select and insert different weights depending on the club configuration used. A vertical indexing slot  25  is formed within the club mounting face surface  14  between the keyed mounting channels  15  intersecting the slide bore  23  to provide registration clearance for the interchangeable club striker plate  17 , best seen in  FIGS. 1 and 3  of the drawings. 
   The club striker plates  17  are of a generally rectangular configuration shaped to conform with the outer edge diameter of the club body mounting face  14 . The striker plates  17  have as previously described a pair of spaced parallel registration locking key flanges  16 A and  16 B extending therefrom with a central indexing tab  26  therebetween. The locking key flanges  16 A and  16 B are registerably disposed within the corresponding key mounting channels  15  by vertical insertion with locking pin registration detents  27  therewithin for engagement with the hereinbefore described locking spheres  19 C of the locking pins  19  as best seen in  FIG. 5  of the drawings. The striker plates  17  have a variety of different target surface angular inclinations indicated by broken lines at  17 A in  FIG. 3  of the drawings. This variation in target angle surface allows the player, not shown, to select a different club face angle emulating different club heads and inserted in a common drive head  10  of the invention. The striker plates  17  will automatically lock in place for containment of the selected and inserted movable acceleration weight  24  as previously described. 
   In use, as the golf head club  10  of the invention is swung back through its arc, the movable weight  24  will initially move within the bore against the striker plate  17  and then at the termination of the back swing be repositioned to the distal end of the slide bore. As the club head  10  is then accelerated forward in the travel path of the club and engages the target (golf ball not shown) the weight  24  will slide forward striking the striker plate  17  adding additional kinetic energy to the club head with additional thrust imparted to the target for a longer drive which is advantageous in the game of golf. 
   To replace the striker plate  17  and gain access to the slide bore  23  and weight  24  for selective removal and replacement, if required, the release tool  21  is placed against the respective lock pins engagement surface  20  depressing the release shaft  19 A allowing the area of reduced transverse dimension on the shaft to be aligned with the spheres  19 C thus releasing the striker plate  17  allowing it to be retracted vertically out of the keyed mounting channels  15 . Once removed, it will be evident that the weight  24  can be removed and replaced, if required, within the slide bore  23  and a different striker plate, for example, having a different angular face inclination can be reinserted and locked into place in the reassembled club head  10  of the invention. 
   It will be seen that an alternate form of the invention in  FIG. 3  of the drawings in which a shock reduction insert  29  indicated by broken lines is secured to the face impact surface of the movable weight  24 . The insert  29  is of a synthetic resin material that will allow kinetic energy transfer to the striker plate while absorbing the material impact shock that could damage the striker plate material. 
   It will thus be seen that a new and novel interchangeable club head  10  of the invention has been illustrated and described and it will be apparent to those skilled in the art that various changes and modifications may be made thereto without departing from the spirit of the invention.