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1. Field of the Invention
The present invention generally relates to cue sports, and more particularly to a sliding sleeve accessory for use with a pool or billiard to make use of the cue more convenient and precise when executing shots.
2. Description of Related Art
Billiard games are mostly played with a stick known as a cue. The cue typically comprises a one piece tapered stick or a two piece stick wherein the pieces are adapted to be coupled together in the middle, such as by threaded connection. The cue typically includes a butt end, a tapered shaft projecting from the butt end and terminating at a ferrule upon which a rounded tip is affixed for making contact with the balls. A billiard player typically grasps the butt end of the cue with one hand (e.g. with the right hand, for right handed players) and supports the cue shaft by making a bridge with his/her other hand. A bridge is formed by placing a hand on the table and spreading the fingers apart such that the cue can slide between the “V” that is formed between the thumb and index finger, or alternately between index and middle finger knuckles. The billiard player then executes a shot by moving the cue longitudinally relative to the bridge hand with a short jab or thrusting motion. The smooth movement of the cue across the supporting surfaces of the player's hand is critical in executing precise shots.
The skin of the player's hand, however, is not an ideal sliding surface for a cue. For example, perspiration can cause the player to experience difficulty executing a shot by affecting the ability of the cue to glide smoothly over the skin. In an effort to address this problem, billiard players commonly apply a dry lubricating powder, such as chalk, to their cue support hand. The powder, however, must be repeatedly reapplied and is known to get on the player's clothing, the felt table covering, furniture etc.
Accordingly, various devices and methods have been developed in an attempt to overcome these limitations and disadvantages. The background art reveals a number of attempts to provide devices that reduce the friction between the cue and the player's hand. For example, U.S. Pat. No. 529,731, issued to Gschwendtner, discloses attaching a loose, but closely fitting sleeve to the guiding end of the cue which is laid on the guiding hand whereby the guiding end of the cue does not come in direct contact with the hand. U.S. Pat. No. 870,491, issued to Callaghan, discloses tubular cue sleeve through which a cue passes. The cue sleeve includes external structure to aid in the accurate positioning of the cue-holding hand. U.S. Pat. No. 2,931,649, issued to Furda, discloses a cue supporting device that allows the cue to be used by a single hand. U.S. Pat. No. 3,416,794, issued to Ciano, discloses a bridge-aid device for cues. U.S. Pat. No. 3,534,959, issued to Elswick, discloses a cue stick having a self-contained hollow guide member with a flanged sleeve. A flanged shaft portion of the cue stick is slidable within the flanged sleeve. U.S. Pat. No. 4,147,346, issued to Giannetti, discloses a guide adapted to be hand-held and adapted to receive the shaft of a cue stick so the cue stick may glide easily. The guide includes a depending support that forms a handle that supports the cue stick above the surface of the pool table. U.S. Pat. No. 5,238,457, issued to Triplett, discloses a sliding cue holder device having an upright post with a semi-spherical drum member fixed to the bottom post that provides a rounded bottom surface for engaging the playing surface of the pool table. U.S. Pat. No. 5,290,030, issued to Medbury, discloses a cue having a bridge sleeve through which the cue can slide. U.S. Pat. No. 5,478,282, issued to Possum et al., discloses pool cue having a freely slidable tubular sleeve disposed thereon. U.S. Pat. No. 6,042,481, issued to Walker et al., discloses a braided friction-reducing sleeve for a billiard cue shaft. U.S. Pat. No. 6,066,051, issued to Liu et al., discloses a pool cue having a sliding bridge sleeve with cleaning wipers. U.S. Pat. No. 7,169,055, issued to Mekosh, discloses a pool cue with a slidable sleeve and o-rings that prevent the sleeve from falling off the cue.
The various devices disclosed in the background art are burdened by a number of disadvantages and shortcomings that have limited acceptance and use of such devices in the field of cue sports. A number of the devices are bulky and overly complex and have thus not realized widespread acceptance. In addition, the sleeve-type devices generally fail to address the competing demands for an inner surface providing a low coefficient of friction to promote smooth slidable engagement and an outer surface that provides a comfortable fit with the player's bridge hand.
Accordingly, there exists a need in the art for a pool cue adapted with a slidable sleeve that provides a smooth stroke while mating comfortably, yet securely, with the user's bridge hand.
The present invention overcomes the limitations and disadvantages present in the art by providing a friction-reducing cue sleeve that may be easily installed on a pool cue to provide the user with a comfortable ergonomic grip while providing low static and dynamic coefficients of friction. Such an improved cue sleeve preferably comprises an open ended, generally tubular sleeve that is capable of radial self-adjustment, to maintain a fit that provides constant contact with the tapered outer surface of the cue. The sleeve outer surface is preferably characterized as having a high static coefficient of friction to ensure a slip-free grip, whereas the sleeve inner surface is preferably characterized as having a low coefficient of friction to ensure that the device slides smoothly along the pool cue.
Accordingly, it is an object of the present invention to provide advancements in the art of cue sports.
It is another object of the present invention to improve cue handling by providing a sliding cue sleeve having low coefficients of static and dynamic friction.
Yet another object of the present invention is to provide such a sleeve that has an outer surface having a high coefficient of static friction.
In accordance with these and other objects, which will become apparent hereinafter, the instant invention will now be described with particular reference to the accompanying drawings.
Various other objects, features and attendant advantages of the present invention will become fully appreciated as the same becomes better understood when considered in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the several views, and wherein:
The terms used in this specification generally have their ordinary meanings in the art, within the context of the invention, and in the specific context where each term is used. Certain terms that are used to describe the invention are discussed below, or elsewhere in the specification, to provide additional guidance to the practitioner regarding the description of the invention. For convenience, certain terms may be highlighted, for example using italics and/or quotation marks. The use of highlighting has no influence on the scope and meaning of a term; the scope and meaning of a term is the same, in the same context, whether or not it is highlighted. It will be appreciated that same thing can be said in more than one way. Consequently, alternative language and synonyms may be used for any one or more of the terms discussed herein, nor is any special significance to be placed upon whether or not a term is elaborated or discussed herein. Synonyms for certain terms are provided. A recital of one or more synonyms does not exclude the use of other synonyms. The use of examples anywhere in this specification including examples of any terms discussed herein is illustrative only, and in no way limits the scope and meaning of the invention or of any exemplified term. Likewise, the invention is not limited to various embodiments given in this specification.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In the case of conflict, the present document, including definitions will control. As used herein, “around”, “about” or “approximately” shall generally mean within 20 percent, preferably within 10 percent, and more preferably within 5 percent of a given value or range. Numerical quantities given herein are approximate, meaning that the term “around”, “about” or “approximately” can be inferred if not expressly stated. As used herein, when a number or a range is recited, ordinary skill in the art understand it intends to encompass an appropriate, reasonable range for the particular field related to the invention.
With reference now to the drawings,
A significant aspect of the present invention involves providing a friction-reducing sleeve that may be easily installed on a pool cue to provide the user with a comfortable ergonomic grip while providing low static and dynamic coefficients of friction.
Each sleeve segment 102 has an inner surface 110 characterized as having a low coefficient of static and dynamic friction. The desired coefficients of friction are below 0.5, and are preferably below 0.1. Inner surface 110 may be formed by the material forming segment 102, or may be formed by application of a low friction coating to the inner surface thereof. Suitable low fiction coatings include self-lubricating materials, such as TEFLON®, Nylon, or any other suitable low friction material or coating. TEFLON® is a registered trademark of E.I. DuPont De Nemours and Company for synthetic resinous fluorine-containing polymers.
As best depicted in
Turning now to
As should now be apparent, the present invention functions by simply slipping the friction-reducing sleeve 100 (or any of the other alternate embodiments, 200 and/or 300) onto the cue stick 12 into an operative position as illustrated in
The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention. The instant invention has been shown and described herein in what is considered to be the most practical and preferred embodiment. It is recognized, however, that departures may be made therefrom within the scope of the invention and that obvious modifications will occur to a person skilled in the art.
This application claims the benefit of provisional U.S. Patent Application No. 61/841,978, filed on Jul. 2, 2013, and provisional U.S. Patent Application No. 61/841,986, filed on Jul. 2, 2013.
Number | Name | Date | Kind |
---|---|---|---|
529731 | Gschwendtner | Nov 1894 | A |
870491 | Gallaghan | Nov 1907 | A |
1092189 | Varian | Apr 1914 | A |
1159133 | Thomson | Nov 1915 | A |
2931649 | Furda | Apr 1960 | A |
3416794 | Ciano | Dec 1968 | A |
3534949 | Elswick | Oct 1970 | A |
4147346 | Giannetti | Apr 1979 | A |
5238457 | Triplett | Aug 1993 | A |
5290030 | Medbury | Mar 1994 | A |
5478282 | Possum et al. | Dec 1995 | A |
6042481 | Walker et al. | Mar 2000 | A |
6066051 | Liu et al. | May 2000 | A |
6113501 | Richards | Sep 2000 | A |
7169055 | Mekosh | Jan 2007 | B2 |
7611416 | Mattina et al. | Nov 2009 | B1 |
Number | Date | Country | |
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61841978 | Jul 2013 | US | |
61841986 | Jul 2013 | US |