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Billiard cueRelated Patent Categories: Games Using Tangible Projectile, Billiards Or Pool, CueBilliard cue description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070010340, Billiard cue. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a billiard cue, and particularly to a billiard cue having a structure where a butt and a shaft are connected to each other through a shaft and formed as a single rod-like body. [0003] 2. Description of the Related Art [0004] Billiard cues that are widely used today are usually constructed by a shaft and a butt which is attached to the back end of the shaft, and the shaft and the butt are connected to each other and formed into a single rod-like body. As for a shaft of a billiard cue, it is critical to adjust its weight, hardness, and compression characteristics for absorbing hitting force so that they all have desired values. [0005] Also, this kind of billiard cue as a whole is required to have appropriate hardness for accurate shots by giving some flexibility to the top end side of a shaft which hits a ball and by giving hardness to the back end side of the shaft which is connected to a butt. [0006] There is known a structure of such billiard cue, where a bore (a cut-out hole) is made on the top end side of the shaft to reduce its weight and also to provide flexibility to the top end side of the shaft. For example, this structure is disclosed in Japanese translation of PCT/US1995/012666 (tokuhyou-hei 11-502428) and the like. [0007] A conventional billiard cue having a bore (hollow portion) in the top end side of the shaft contributes a weight reduction of the top end portion and thus realizes quick acceleration and outward deflection. However, since the top end side of the shaft is hollow and coreless, a player is unable to experience a subtle feeling of ball hitting easily. Moreover, since the structure of such billiard cue is that a hole or a hollow is provided inside, the billiard cue is susceptible to vertical and horizontal impacts and easy to break. SUMMARY OF THE INVENTION [0008] An object of the invention is to provide a billiard cue that solve the above problems, that enables a player to experience different feelings of hitting a ball easily, that is easy to control a ball, that can improve a sensation from sound and a subtle feeling conveyed to a player's hand, that is structurally durable to impacts and difficult to break, that is easy to reduce weight of the top end portion of a shaft, and that gives a player a comfortable feeling hit and fulfilling sensation of billiard play. [0009] In order to solve the above-described problems, the following means is to be employed: [0010] (1) In a billiard cue formed into a single rod-like body by a butt and a shaft that are connected to each other through a joint, [0011] the shaft is provided with a hollow section running through inside of the shaft along a center axis in a longitudinal direction, and [0012] an internal support structure is provided within the hollow section to support the hollow section from inside. [0013] (2) In the billiard cue according to (1), [0014] the internal support structure in the hollow section is either a structure (a) including an outer frame body which abuts on an inner wall surface of the hollow section to support the hollow section and a support member which supports the outer frame body, or a structure (b) including a support member which abuts on the inner wall surface of the hollow section and supports the hollow section, or a structure having both of (a) and (b). [0015] Here, the internal support structure may be provided in the entire hollow section or only in a predetermined (certain) part of the hollow section. [0016] Further, in the hollow section, there maybe an empty space where the internal support structure is not provided, or a space where only the outer frame body of the internal support structure is provided but inside of the internal support structure remains empty. Other material (substance) may fill in or be placed in these spaces, or the spaces may be left empty. [0017] (3) In the billiard cue according to (1) or (2), the shaft is a single rod-like body made by combining a shaft body, a ferrule section, and a top end member in this order, and the hollow section is provided through inside of the shaft body and the ferrule section. [0018] Here, the shaft is provided with the shaft body and the ferrule section. The shaft body is a rod-like body having a first body end portion to which the butt is connected and the second body end portion on the other side. The ferrule section is attached to the second body end or the second body end side of the shaft body. The hollow section is provided so that it runs through inside of the ferrule section to the inside of the shaft body. The ferrule section has a cylindrical shape with or without a bottom, and the top end member is attached to the ferrule section or the internal support structure directly or through other member. Note that member imposed between the top end member and the ferrule section or the internal support structure may be an elastic member or the second ferrule member. [0019] (4) In the billiard cue according to (1) or (2), the shaft is a single rod-like body made by combining a shaft body in which the hollow section is provided, an extended connecting section, and a top end member in this order, and the internal support structure is a single-piece structure where a support member within the hollow section and the extended connecting section are formed into a single piece. [0020] Here, the shaft body has the first body end portion to which the butt is connected and the second body end portion on the other side. The extended connecting section is a top end section of the internal support structure, provided on the second body end portion side of the shaft body. Also, the extended connecting section is an extension of the shaft body and has a rod-like shape with the same external appearance as the shaft body, and the outer circumference surface of the extended connecting section is exposed. Further, the top end member is attached to the internal support structure directly or through other member. This member placed between the top end member and the internal support structure may be an elastic member or a ferrule member. [0021] (5) In the billiard cue according to any one of (1) to (4) [0022] a material of the internal support structure is any of light-weight wood, urethane foam, expanded polystyrene, expanded polyethylene, Styrofoam, a plastic material, a fiber material, and a light-weight metal material. Continue reading about Billiard cue... Full patent description for Billiard cue Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Billiard cue 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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