Patent Application
20110086724
This invention generally relates to interchangeable golfing equipment and, more particularly, to a specific connection method for quickly securing any brand of golf club shaft and golf club head to one another.
The typical way to connect a golf club shaft and a golf club head is to epoxy the tip end of the golf club shaft into a bore formed within the hosel portion of the golf club head. Many golf shops offer a broad range of exotic shafts and club heads to meet the standards of today's demanding golfer.
To facilitate the ease in which various combinations of shafts and heads may be evaluated by the golfer, some golf equipment makers, such as Callaway, Nike Golf, Alpha Golf, Taylor Made, Nakashima, and Versus Golf have devised connectors that rapidly secure a shaft and a club head together. Because these connectors are releasable, if the customer doesn't like the existing shaft and head combination the connector is simply released and a different shaft and head combination is secured for evaluation by the golfer.
Unfortunately, the known connectors designed by the companies mentioned above have significant deficiencies. For example, with the known connectors both the connector itself and the tip end of the shaft are received within the bore in the hosel portion of the golf club head. In order to accommodate the connector and the tip end of the shaft, these manufactures must design a specific golf club head with a hosel portion and bore that are significantly larger than industry standard. Therefore, industry standard components cannot be used to assemble a golf club without adopting the connection system of a particular company. In addition, any golf club head that has been designed as noted above will not receive connection devices designed by other manufactures.
There exists, therefore, a need in the art for a connector for shafts and heads that does not require the use of a custom golf club head with a larger hosel portion. The invention provides such a connector. These and other advantages of the invention, as well as additional inventive features, will be apparent from the description of the invention provided herein.
A universal connector that releasably couples a golf club shaft and a golf club head within a hosel with a standard bore size is provided. The connector couples the shaft and head without the need to alter or custom design the hosel of the golf club head. The connector allows golf shops, retailers and consumers to instantly customize a club without the need of a repair technician. The product described herein is different because it adapts to any type of shaft or club head and is the only universal connection device in the marketplace. Also, it can be removed at any time without damage to the shaft or the golf club head and each component may be re-assembled using the standard components.
The accompanying drawings incorporated in and forming a part of the specification illustrate several aspects of the present invention and, together with the description, serve to explain the principles of the invention. In the drawings:
While the invention will be described in connection with certain preferred embodiments, there is no intent to limit it to those embodiments. On the contrary, the intent is to cover all alternatives, modifications and equivalents as included within the spirit and scope of the invention as defined by the appended claims.
Referring to
The shaft adapter 22 includes an intermediate portion 26 interposed between a frustoconical portion 28 and a shaft portion 30. The shaft adapter 22, and in particular the frustoconical portion 28, includes a cylindrical bore 34 sized and dimensioned to receive the tip end 36 of the golf club shaft 12. If desired, the bore 34 may extend down into the intermediate portion 28 as well as the frustoconical portion 28. To correspond with the diameter of the standard golf club shaft 12, the bore 34 typically has an inner diameter of either 0.335, 0.350, 0.370, or 0.410 of an inch. Even so, the bore 34 may have other diameters to suitably accommodate shafts of other sizes. In the illustrated embodiment of
Still referring to
The hosel adapter 24 includes an annular flange 40 and a body portion 42. As shown in
In the illustrated embodiment of
The hosel adapter 24 includes a bore 48 sized and dimensioned to receive the shaft portion 32 of the shaft adapter 22. In the illustrated embodiment of
As shown in
The compression nut 26 includes a passage 52 that extends axially therethrough. As shown in
As shown in
To form the assembled golf club of
With the hosel adapter 24 secured in the bore 18 of the hosel 16 and the tip end 36 of the shaft 12 secured in the bore 34 of the shaft adapter 22, the shaft portion 32 of the shaft adapter 22 is inserted into the bore 48 in the hosel adapter 24. Because the shaft portion 32 and the bore 48 have corresponding non-circular shapes, relative rotation between the shaft adapter 22 and the hosel adapter 24 is prevented. Thereafter, the compression nut 26 is rotated by hand or with a suitable tool until the threads 38, 56 engage with each other. As rotation is continued, the hosel adapter 24 and the shaft adapter 22 are drawn tightly together and the golf club 20 as shown in
To disassemble the golf club 20 of
In order to try out and test different combinations of shafts 12 and heads 14 where each shaft and head is equipped with a shaft adapter 22 and a hosel adapter 24, respectively, the above noted process of coupling and uncoupling is repeated. In this manner, shafts 12 and heads 14 of different sizes, from different manufacturers, of different materials, and the like may be repeatedly coupled, tested, and then uncoupled if the results are not satisfactory. If, however, the combination is satisfactory, the golf club 20 may be ordered from a retailer, sold, or used in play on a golf course.
From the foregoing, the connector 10 permits a quick, easy and convenient way for consumers, retailers, and others to try, test, and use different shafts 12 and heads 14 of standard or conventional size and configuration. As those skilled in the art will now appreciate from the above disclosure, the connector 10 permits interchangeability of shafts and heads without having to employ heads of non-standard dimension.
The threading on the shaft adapter may also optionally include a thread locking material such as a nylon patch that prevents vibration from releasing the threaded connection between the compression nut and the shaft adapter.
All references, including publications, patent applications, and patents cited herein are hereby incorporated by reference to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety herein.
The use of the terms “a” and “an” and “the” and similar referents in the context of describing the invention (especially in the context of the following claims) is to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The terms “comprising,” “having,” “including,” and “containing” are to be construed as open-ended terms (i.e., meaning “including, but not limited to,”) unless otherwise noted. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.
Preferred embodiments of this invention are described herein, including the best mode known to the inventors for carrying out the invention. Variations of those preferred embodiments may become apparent to those of ordinary skill in the art upon reading the foregoing description. The inventors expect skilled artisans to employ such variations as appropriate, and the inventors intend for the invention to be practiced otherwise than as specifically described herein. Accordingly, this invention includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the invention unless otherwise indicated herein or otherwise clearly contradicted by context.
This patent application is a Divisional of co-pending U.S. patent application Ser. No. 12/353,304, filed Jan. 14, 2009, which application claims the benefit of U.S. Provisional Patent Application No. 61/020,793, filed Jan. 14, 2008, the entire teachings and disclosure of which are hereby incorporated in their entireties by reference thereto.
| Number | Date | Country | |
|---|---|---|---|
| 61020793 | Jan 2008 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 12353304 | Jan 2009 | US |
| Child | 12971192 | US |
