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01/24/08 - USPTO Class 473 |  110 views | #20080020861 | Prev - Next | About this Page  473 rss/xml feed  monitor keywords

Adjustable weight golf clubs

USPTO Application #: 20080020861
Title: Adjustable weight golf clubs
Abstract: The present invention relates to golf clubs having a movable weight which may be used to adjust the center of gravity of the golf club head. The golf club may include a slidable weight movable to various positions along a slot between the heel and the toe of the club. The head may include a cavity shaped to receive an insert. In one embodiment, a slidable weight consisting of a screw and a weight which may engage with each other may be configured to move along the length of the insert. During assembly, the weight may be inserted into an opening in the end of the insert and slid along a close fitting channel running the length of the insert. The weight's position along the channel may be secured by engaging the screw and tightening down the screw with a portion of the insert secured between the screw head and the weight. The assembled insert and slidable weight may then be press fit into the cavity in the head. By adjusting the position of the weight and screw within the insert, the center of gravity of the golf club may be adjusted. (end of abstract)



Agent: Howrey LLP - Falls Church, VA, US
Inventors: Mark Wayne Adams, Simon Chu
USPTO Applicaton #: 20080020861 - Class: 473334 (USPTO)

Adjustable weight golf clubs description/claims


The Patent Description & Claims data below is from USPTO Patent Application 20080020861, Adjustable weight golf clubs.

Brief Patent Description - Full Patent Description - Patent Application Claims
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FIELD OF THE INVENTION

[0001]The present invention relates to golf clubs. More specifically, the present invention relates to golf clubs having a movable weight which may be used to adjust the center of gravity of the golf club head.

BACKGROUND OF THE INVENTION

[0002]When golf clubs are designed and manufactured, they are typically given specific weight characteristics to achieve performance standards that the manufacturer deems desirable for a large number of golfers. Specifically, manufacturers may wish to adjust the overall weight of the shaft of the club, the overall weight of the head of the club, the weight distribution along the shaft of the club and/or the weight distribution within the head of the club. Each change in weight has different results for different golfers depending on a golfers' height, weight, ability and swing type.

[0003]Often, manufactures distribute the weight of the head of the club by casting more mass into the toe of the club, the heel of the club or both the toe and the heel. This creates a "sweet spot," the ideal location to strike a golf ball, located in or near the center of the club because of the weight distribution. However, because of the inherent differences between each golfers' size, swing and ability, this location for the sweet spot is not always ideal.

[0004]Ideally, a manufacturer would create a set of golf clubs with the weight distributed such that the sweet spot is located at each individual golfer's ideal location to strike the ball. However, "custom" golf clubs are often not economically feasible for most golfers due to the cost associated with tailoring clubs to individual golfers. Additionally, manufacturers are not able to pre-manufacture a large number of clubs for sale as the manufacturing process must account for any changes required by each individual golfer. Therefore, manufacturers often produce adjustable weight golf clubs in order to provide each golfer with clubs which may be at least partially tailored to their individual swing characteristics.

[0005]One previous attempt at providing such an adjustable weight golf club includes the insertion of different value weights into or on to the club head. These weights are generally either perimeter weight inserts, weighted plugs or weighted plates. They may be inserted into different locations inside, or attached around the outside, of the club head. For a golfer to adjust the weight of these clubs, the weights must be removed and replaced with separate weights each time a change is desired.

[0006]Another previous attempt at providing an adjustable weight golf club has been to provide weighted screws located at specific locations inside and/or around the outside of the club head. A golfer may tighten or loosen the screws in order to alter the distribution of weight along the threaded channel which receives the screw in the head of the club.

[0007]One drawback of previous adjustable weight clubs is that weight adjustment may be time-consuming because the weights may need to be detached and reattached or adjusted using special tools. Further, adjustment of the weight may include the removal of a cover plate or similar device merely to obtain access to the weights. As such, when a golfer wishes to make a quick change or an alteration to the weight of the club (as may be desirable during play), the golfer is unable to do so without engaging in the laborious process of switching or adjusting the weights.

[0008]Another drawback of these clubs is that the potential adjustability is limited. A golfer may only adjust weights in certain specific locations and the location of the weights is limited to those locations chosen by the manufacturer. Therefore, each golfer's options for the distribution of weight in the club head is limited to the adjustment of screws or weights placed at specific locations around the club head. These locations may not provide for the ideal weight adjustments for each golfer.

[0009]Finally, the previous adjustable weight golf clubs involve many metal parts which must be manufactured separately and fit together. As a result, the manufacture and assembly of the clubs is costly and time-consuming. Where metal parts must be fit together, there are specific tolerances which must be met in order to ensure that each part will fit with the other parts and that the club as a whole will function properly. Further, the assembly of these clubs is difficult because of the number of parts which must be fit together.

[0010]As such, there is a need for an easily manufactured adjustable weight golf club which provides golfers with the ability to easily adjust the center of gravity of the golf club at many different locations.

SUMMARY OF THE INVENTION

[0011]The present invention relates to golf clubs. More specifically, the present invention relates to golf clubs having a movable weight which may be used to adjust the center of gravity of the golf club head.

[0012]The present invention may include an adjustable weight golf club. The golf club may comprise a shaft, a head a movable weight and an insert for slidably receiving the movable weight. In one embodiment, the insert may be positionable within the head of the golf club.

[0013]The present invention may also include a method of manufacturing an adjustable weight golf club. The method may include the steps of manufacturing a golf club head configured to attach to a golf club shaft and manufacturing an insert configured to slidably receive a movable weight. Additionally, the method may include the step of positioning the insert within the golf club head.

[0014]These and other objects and advantages of the invention will be apparent from the following description, the accompanying drawings and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

[0015]While the specification concludes with claims particularly pointing out and distinctly claiming the present invention, it is believed the same will be better understood from the following description taken in conjunction with the accompanying drawings, which illustrate, in a non-limiting fashion, the best mode presently contemplated for carrying out the present invention, and in which like reference numerals designate like parts throughout the Figures, wherein:

[0016]FIG. 1A shows an exploded view of an adjustable weight golf club according to one embodiment of the present invention.

[0017]FIG. 1B shows an adjustable weight insert for use with one embodiment of the adjustable weight golf club of the present invention.

[0018]FIGS. 2A, 2B and 2C show several locations of a slidable weight in a golf club head according to one embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0019]The present disclosure will now be described more fully with reference to the Figures in which various embodiments of the present invention are shown. The subject matter of this disclosure may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein.

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Golf club head
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Golf club and head thereof
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Games using tangible projectile

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