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Attachment system for detachably securing a component to a shaft-like memberAttachment system for detachably securing a component to a shaft-like member description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20090156325, Attachment system for detachably securing a component to a shaft-like member. Brief Patent Description - Full Patent Description - Patent Application Claims
This application claims the benefit of U.S. Provisional Application No. 60/986,061, filed on Nov. 7, 2007 The present disclosure relates to threaded attachment means. More particularly, this present disclosure relates to threaded attachment means for securing an object to a shaft. By way of example, the invention can be used in association with a golf club, providing a means of interchangeably and securely attaching a plurality of golf club heads to a single shaft. The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. An exemplary embodiment of the new and improved attachment system of the present invention is shown in operative association with a golf club which is typically manufactured as a single component, requiring the user to carry a plurality of clubs around in a golf bag during a typical round of golf. Heretofore, golf club heads have been glued to the shaft end by epoxy or other adhesive and, often times, specialty golf shops will assemble the shafts and the golf club heads to customize the clubs for a customer. Due to the inconvenience of carrying around a large number of golf clubs, it may be desirous to have a system that allows for the interchangeability of various golf club heads with a single shaft. There are known forms of shaft and head component connections, such as that shown in PCT Patent Application No. WO 2004/009186 and U.S. Published Application Nos. 2004/0018887 and 2004/0018886. As will be readily appreciated by those skilled in the art. once the present invention is understood, there are significant deficiencies existing in the prior art, which are overcome by utilizing the unique shaft attachment principles of the present invention. In providing an interchangeable threaded means of attaching an object to a shaft, such as a golf club head, various factors have to be considered. First of all, the weight of the head and shaft assembly is of importance. In the particular application of golf clubs, the club must remain lightweight in order to retain its performance. Secondly, the strength of the connection between the head and the shaft must be secure enough to prevent accidental separation, but must also provide for easy separation (i.e., low torque) by the user when it is desired to change the head on the shaft. The present invention utilizes a threaded fitting between a collet attached to the end of a shaft (i.e., to the lower end of a golf club shaft) and a complementary threaded female aperture on an associated component (i.e., on the top of a golf club head). Utilizing conventional 60° threads would create an adequate amount of tension to hold the assembly together, although after repeated impacting and vibration, the joint will work itself loose because there is a degree of unavoidable clearance in the 60° threads. Therefore, the present invention utilizes a ramped thread design for the female threads, which eliminates the lateral thread clearance, and converts some of the axial tension seen in the 60° threads to radial or compressive forces on the male threads. This design utilizes the compressive forces to compress the male thread component, gripping the shaft, and eliminating all clearances in the threaded joint that can allow vibration or noise in the joint. This will virtually eliminate any vibration from the threaded joint, while utilizing the same applied torque as other threaded connections. The female threads are formed so that when the threaded collet attached to the shaft initially engages the female threads, nominal friction is produced until the threaded collet is fully inserted, at which point the threads of the male collet engage the ramped inner surfaces of the female threads, creating a locking force while utilizing normal torque. This connection, as mentioned, eliminates all clearances in the threaded joint that can allow vibration or noise in the joint. It is therefore an advantage of the present invention to create a system of connecting a shaft component to an associated component, herein illustrated and explained by way of example and not by limitation, as embodied in interchangeable golf club heads with a single shaft, which eliminates vibration and noise normally associated with such detachable assemblies. A further advantage of the present invention is to provide a system for connecting a shaft component and an associated component embodied, by way of example, in an interchangeable golf club head system, which is simple to connect and disconnect without applying excessive torque to the shaft or head. It is yet another advantage of the present invention to provide a connection system which prevents inadvertent separation due to repeated impacting and vibration as a result of repeated impact forces. Finally, a further advantage of the present invention is to provide a shaft connection system which can be utilized in various other applications, not just golf club construction, wherein it is desirous to securely attach an object to a given shaft while maintaining the ability to selectively disassemble the components when it is so desired. Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure. Continue reading about Attachment system for detachably securing a component to a shaft-like member... Full patent description for Attachment system for detachably securing a component to a shaft-like member Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Attachment system for detachably securing a component to a shaft-like member patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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