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 This application is a division of application Ser. No. 09/220,627 filed Dec. 23, 1998 and entitled “Modular Golf Club System And Method.”
 This invention relates to modular golf clubs and to methods for rapidly and inexpensively securing and removing club heads and shafts, not only for the conventional manufacture of fixed heads and shafts but also for custom fitted and interchangeable heads and shafts. The present invention allows golfers to be inexpensively fitted to each club, and to conveniently change such fittings as a golfer's physical skill or physical condition changes with the passage of time. It also relates to methods and means for significantly reducing shock-induced vibration transmitted to the hands of the user.
 The problem of how to attach a club head to a shaft is, of course, almost as old as the game of golf itself, dating from the time that something other than a one-piece club was first utilized. In the intervening years, a number of inventors have tried a number of different ways of securing heads and shafts, with various degrees of success. One of the earliest patents to attempt to address the problem of how to supply custom made clubs from standard components is that of U.S. Pat. No. 1,601,770 to Reach and Reach. The solution provided by these patentees was to have an extended upwardly tapered bore in an extended hosel; a sleeve whose outer surface tapered to correspond to the tapered bore of the hosel and whose inner surface tapered oppositely; and a club shaft which tapered downwardly to mate with the inner taper of the sleeve. The shaft of course would fit loosely in the hosel without the sleeve; the sleeve would then be “forced firmly” into place, i.e., drive fitted and screwed to the wooden head perpendicularly to the bore at the base of the bore, and then wrapped. In an alternative embodiment, a sleeve of soft metal would be employed, and an expanding screw inserted into the base of the sleeve.
 U.S. Pat. No. 1,932,902 to McDowell discloses a split shaft with a rubber socket “vulcanized” around the lower end of the shaft. The lower end of the bore in the neck of the club head is flared to form a recess and an annular shoulder, an expansion member is inserted through the upper end of the shaft and seated within the lower split end of the shaft, with the upper end of the expansion member being tapered to seat snugly first above the split portion of the shaft and the shoulder of the neck. The jaws of the expansion member are forced outwardly to expand the split end of the shaft to fill the recess, by means of a screw threaded through the upper end of the expansion member and tightened by a long-handled tool through the top of the shaft.
 U.S. Pat. No. 3,081,087 to Redd discloses a bolt in the shaft projecting beyond the shaft to engage a receiving threaded hosel in the shank. The exact means of securing the head of the bolt within the shaft appears not to be disclosed.
 U.S. Pat. No. 5,269,517 to Petruccelli appears directed only to means for making lighter-weight golf clubs. The preferred embodiment discloses a hollow glass fiber shaft, reinforced by a stiff solid rod of plastic, and a metal tube, one end of which receives the shaft and the other end of which is bent and flattened. An indentation is placed in the metal tube, shaft, reinforcing rod assembly to secure the same, prior to having other parts welded thereto and being placed in a mold for receiving an injection of plastic such as polyurethane. It is not seen how such a design could permit heads and shafts to be readily interchanged.
 Similarly, U.S. Pat. No. 5,429,355, for an improved connection of lower hosel weight and greater head weight, would appear to disclose a permanent connection.
 U.S. Pat. No. 5,496,029 to Heath discloses a golf club design with a shaft extendable in length, via telescoping shaft portions; the method of attaching the club head to the shaft does not appear to be disclosed.
 U.S. Pat. No. 5,540,435 to Kawasaki is directed to interchangeable heads and shafts. The head and shaft are secured by screwing a bolt through the bottom of the club head and into threads internal to the shaft.
 U.S. Pat. No. 5,653,645 to Baumann discloses a connecting device for a golf club putter, consisting of two co-axial, differently-sized cylinders separated by a flange. The cylinders are to be permanently fixed by gluing them into place in the putter head and shaft.
 It will be readily appreciated by those skilled in the art that most of the prior art is directed to means for permanently affixing club heads and shafts, as opposed to secure but changeable means. Even those few which have attempted to resolve the problems solved by the present invention have done so with only limited success, at best, or in the course of resolving one set of difficulties have introduced additional difficulties previously unknown. Typical of the latter is the Kawasaki '435 approach: one may readily interchange head and shaft, but only specialized, very expensive heads and shafts. As disclosed by the '435 patent, the Kawasaki approach requires each head to have machined into it a highly-specialized hexagonal-shaped hole, which specialized hole not only increases in diameter toward the top of the hole but which progressively changes from hexagonal to circular; the connecting piece for the head and shaft likewise progresses from hexagonal to circular, in the opposite direction. As difficult as marking the connecting piece—an external workpiece—in this manner would be, it would be far more difficult still to machine the hole of the club head—an interior workpiece—in a complementary manner. Additionally, the connecting piece apparently must be permanently epoxied into place in the club shafts; it would appear that the Kawasaki approach would require the golfer to retain each shaft in his collection and change only the head of each shaft.
 Worse still, from the dedicated golfer's point of view, the Kawasaki solution will add a considerable amount of weight to the club head, which will be concentrated in the heel of the club head. While the location of the additional weight can be compensated for by adding still more weight at the toe, if such additional weighting is not desired, there is nothing that Kawasaki can do to eliminate or reduce the undesired weighting. Those skilled in the art will appreciate that, with the Kawasaki approach, one can only change to a new club head which has also been specially, and expensively, machined to be complementary with the specially machined connecting pieces.
 Still another approach is that offered by Zevo Golf, utilizing a method apparently developed by Sean Toulon. This approach is centered on the use of a set of 48 interchangeable aluminum hosels that screw into the wood heads quickly and easily during a fitting session. Each hosel has one of eight different lies and one of six different face angles, which allow up to 48 different combinations for each interchangeable head and shaft. However, as understood by applicant, the Zevo system does not deliver to the customer a fitted golf club which can be changed as the player's skills or condition changes; rather, the interchangeable hosels (and shafts and heads) comprise only a “fitting set” to be used repeatedly by the fitter for other customers. Once the custom fitter and the customer have agreed on the specifications, a full set of permanently-attached clubs is ordered and produced to those specifications, based only upon custom fitting to woods and five-irons. Not only does the customer not get an individually-fitted club for each in his set, but he must await manufacture and shipment of his only partially-custom fitted clubs, and such clubs are expensive: $350 to $550 per driver, $125 to $350 per iron.
 In summary, applicant is aware of no other system for custom fitting golf clubs which (a) is adaptable to virtually all existing golf clubs, (b) allows custom fitting of each and every golf club in a set, (c) does not change the weight of the final club to any significant degree, (d) allows the user to purchase the exact same clubs he has been fitted to, (e) can deliver the user's final clubs the same day of the fitting session, (f) is affordable, and (g) permits any club in the set to have its shaft or head readily changed in the event the customer's abilities or preferences should change.
 It is therefore a principal object of the present invention to provide a means or system which is adaptable to virtually all present golf heads in manufacture today. It is yet another object of the present invention to provide a means or system for custom fitting golf clubs which adds no appreciable weight to the final, individually-fitted club.
 It is still another object of the present invention to provide a means or system for delivering to the end user the exact same clubs to which he or she was fitted; to deliver them the same day of fitting; and to deliver them at an economical price.
 Still another object of the present invention is to provide a modular means or system by which a custom fitted club, or set of clubs, may be readily interchanged in the future in the event of a change in the user's abilities or preferences or of a change of users.
 It is yet another object of the present invention to provide such means or systems in combination with means to significantly reduce the shock vibrations which are normally transmitted from club head to shaft with standard clubs.
 In a preferred embodiment, standard or conventional shafts, hosels and heads may be utilized, and readily interchanged whenever desired. In use, a custom fitter would have a number of pre-prepared shafts and heads to quickly assemble, or disassemble and re-assemble, various combinations as desired. Upon determining the desired combination, the combination may be removably secured and delivered to the customer in short order.
 To prepare any standard or conventional shaft, hosel and head, it is preferred to slightly enlarge the hole in the hosel for receiving the shaft. Preferably, at least a two-piece interconnecting means or anchoring system is utilized, one piece for the hosel and one piece for the shaft. Although the arrangement for hosel and shaft may be reversed, it is convenient to insert a threaded member having a sloped shoulder and one or more mechanical upsets into a recess in the hosel adapted to receive such upsets, and a complimentary member having mating threads and an oppositely sloped shoulder in the shaft. Since all prepared shafts will mate with all prepared heads, no convenience will be lost by permanently securing the shaft portion of such interconnecting means to each shaft. Similarly, it is convenient to epoxy the hosel portion of the interconnecting means to the hosel; with a mechanical fit therebetween, such adhesive is not necessary to prevent undesired rotation, but is a convenient way of preventing such means from falling out of the head should a head be inverted before final assembly. Thus prepared, it is an easy and convenient matter for a custom fitter to rapidly connect any desired shaft to any desired head, and to interchange the same until the most desirable combination for each particular club is found. Each such optimized club may be immediately delivered to the customer and immediately used thereafter, or, if an extra margin of security is preferred, the optimized club can be quickly disassembled, epoxy applied to the areas where shaft and head overlay, the club promptly reassembled and delivered to the customer. In the latter event, the customer should wait a few hours to use the finished club, until the epoxy adhesive has properly cured.
 At a later date, should the user desire to change either club heads or shafts, the club may be quickly disassembled for such change. A club which has had the extra step of applying epoxy may also be quickly changed, by the additional step of cutting away the epoxy bond between club head and hosel. An additional benefit of the present invention is that it significantly reduces the shock vibration which is normally transferred from the club head to the shaft.
 It is to be understood that the detailed description which follows is of the preferred embodiment only, and that a number of modifications and variations of the principles of the invention will suggest themselves to those skilled in the art once these principles have been fully understood.
 The present invention will allow a customer to travel to a custom-fitting shop or other properly equipped establishment, be custom fitted to each and every club of a desired set, and receive his finished clubs—the exact same clubs to which he was fitted—the very same day, i.e., at the conclusion of the fitting session. When installed in a completed club or set, the present invention can not be seen; the finished clubs will have an appearance identical to standard clubs without the invention; and the weight of the clubs will be almost identical.
 A first interior interconnectable means, as more clearly may be seen in
 It is also to be understood that the order of preparing hosel and shaft is inconsequential to this invention. Referring to
 Thus having a prepared club head and hosel and a prepared shaft—i.e., with first and second interconnectable means interior thereto and secured at least against rotational movement—the club is ready for assembly and trial. All the user need do is to insert into the space between the first and second interconnectable means, some form of device for translating the compressive longitudinal forces generated by connecting the interconnectable means and rotating the shaft about the head, into a transverse force between the shaft and the hosel portion of the club head. Such a device may take many different forms. A preferred form is a plurality of wedge means
 Some users may prefer to loosely assemble the overall interconnectable means in each shaft, as illustrated in
 Alternatively, for additional security against separation, the assembled club with the final selection of chosen components may be quickly disassembled, epoxy adhesive applied to the interacting surfaces of shaft and hosel, and the club reassembled and delivered to the customer. In almost all geographical locations, the epoxy will cure overnight and the customer may utilize his doubly-secure club the next day.
 The disclosed preferred wedge means
 It is to be understood that such wedge means may take many different forms, and may be constructed out of many different materials, without departing from the principles of the present invention. As one such example, such wedge means could be formed of a resilient material, such as rubber, and shaped like a doughnut; the compressive longitudinal forces upon assembly would create sufficient outward, transverse forces through such a toroid as to securely hold the parts together. However, as it cannot be determined in advance how many years the wedge will need to hold the club together, and since most resilient materials eventually lose their ability to translate compressive longitudinal force into transverse expansive forces, it is preferred to utilize less yieldable types of material, thereby making the removable connection satisfactory indefinitely.
 Other forms which such wedge means may take are: a plurality of ball bearings; long, tapered roller bearings; a pair of semi-circular wedges; or a single, split ring of nearly circular cross-section, i.e., a split toroid. Many other forms will be equally suitable, the only requirements being that they interact compatibly with the shape of the interconnecting means, and that they be capable of translating compressive longitudinal forces into expansive transverse forces over an indefinitely long period of time.
 An additional benefit of the present invention is its capacity not only to significantly reduce the shock vibrations which are ordinarily transmitted from club head to shaft, but its capacity to virtually eliminate such vibrations. This is thought to be attributable to the wedge means, i.e., the device which, interacting with the interconnectable means, acts to translate the compressive longitudinal forces into expansive transverse forces. Without such devices—i.e., in a standard club—the lower end of a standard shaft is not only free to vibrate like a bell, but the connection between shaft and hosel is such as to transmit the shock-induced vibration from the club head to the shaft very efficiently, and the shaft then very efficiently transmits its induced vibrations to the hands of the user. With a wedge means at the lower end of the shaft, a node is effectively created at the very point (or area) that the shaft is (in effect) being ‘struck’ by the club head. As is appreciated by students of music, striking a vibratory instrument—a hollow chime, or a solid triangle, for example—at a node point will produce only a dull thud rather than the expected, long-lasting vibratory tone; this is because node points are highly inefficient at transmitting the energy received into vibrational energy along the length of the device in question. Although solid shafts may not literally ‘ring like a bell’, it is unquestioned that they too are efficient vibrators, e.g., the musical triangle, with its solid cross-section.
 While any form of wedge means may be efficiently employed to create at least a node point, it is thought that the greater the area of contact between such wedge means and its surrounding surface, the lesser the vibrations that can be imparted to the shaft. Thus vibration-reducing considerations would seem to urge a selection of forms of interconnectable means and wedge means which will maximize the node or null area. Since the preferred embodiment of this invention described herein adds only about five grams of weight to a club with a hollow shaft, a user could maximize the node area by utilizing as many wedge means of the type depicted in
 It is also to be understood that the particular form or shape of the interconnectable means actually selected need not have inclined surfaces at each interacting surface; one will suffice, and the other may be square - or blunt-shouldered, without departing from the principles of this invention.
 Those skilled in the art will appreciate that what has been described heretofore are methods and apparatus suitable for golf clubs of the type having hollow shafts. However, not all golf clubs today utilize such hollow shafts; many employ not only solid shafts, but such shafts of materials that cannot support a small cylinder being hollowed out of the lower end. If such shafts can support the torsion required to assemble clubs of this invention, then only a short cylindrical tube
 Should the shaft be of a material that will not withstand the torsional forces generated in the assembly/disassembly process, it is preferred to select a length of mounting tube which will extend above the hosel for a distance sufficient to permit it to be gripped by a tool for tightening and untightening the shaft and head. Alternatively, if esthetic considerations will permit, a many-sided nut may be welded onto one end of the mounting tube, and the club rapidly assembled or disassembled with the aid of a standard wrench.
 Other alternate forms of the present invention will suggest themselves from a consideration of the apparatus and procedures hereinabove disclosed. Accordingly, it should be clearly understood that the systems and techniques described in the foregoing explanations and depicted in the foregoing drawings are intended as exemplary embodiments only of the invention and not as limitations thereto.