US20070010340A1 - Billiard cue - Google Patents

Billiard cue Download PDF

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Publication number
US20070010340A1
US20070010340A1 US11/392,986 US39298606A US2007010340A1 US 20070010340 A1 US20070010340 A1 US 20070010340A1 US 39298606 A US39298606 A US 39298606A US 2007010340 A1 US2007010340 A1 US 2007010340A1
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Prior art keywords
shaft
section
support structure
internal support
hollow section
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Abandoned
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US11/392,986
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English (en)
Inventor
Kazunori Miki
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MiKi Co Ltd
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MiKi Co Ltd
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Assigned to KABUSHIKI KAISHA MIKI DBA CO., LTD. CORPORATION reassignment KABUSHIKI KAISHA MIKI DBA CO., LTD. CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MIKI, KAZUNORI
Publication of US20070010340A1 publication Critical patent/US20070010340A1/en
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63D—BOWLING GAMES, e.g. SKITTLES, BOCCE OR BOWLS; INSTALLATIONS THEREFOR; BAGATELLE OR SIMILAR GAMES; BILLIARDS
    • A63D15/00—Billiards, e.g. carom billiards or pocket billiards; Billiard tables
    • A63D15/08—Cues

Definitions

  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the top end side of the shaft is hollow and coreless, a player is unable to experience a subtle feeling of ball hitting easily.
  • 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.
  • 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.
  • the shaft is provided with a hollow section running through inside of the shaft along a center axis in a longitudinal direction, and
  • an internal support structure is provided within the hollow section to support the hollow section from inside.
  • 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).
  • the internal support structure may be provided in the entire hollow section or only in a predetermined (certain) part of the hollow section.
  • 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 may fill in or be placed in these spaces, or the spaces may be left empty.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • a hollow section is provided within a shaft or the top end side of the shaft along the center axis of the shaft, and an internal support structure is placed within the hollow section to support the hollow section from inside. Therefore, the internal support structure in the hollow section of the shaft realizes a construction of the shaft that is very similar to a shaft having a solid body with a core.
  • strength of the entire stick of a billiard cue is improved.
  • strength of the top end of a shaft is remarkably improved compared to a conventional pipe-type shaft and durability to breakage and damages is also greatly improved compared to a conventional one.
  • sizes, dimensions, positions, materials of the hollow section and the internal support structure within a billiard cue can be arbitrarily decided. Therefore, in aiming at weight reduction of the top end side of a shaft, there is a lot of flexibility when designing the hollow section and the internal support structure to suit players' preferences.
  • FIG. 1 is a structure view of the entire billiard cue according to an embodiment of the present invention
  • FIGS. 2 - 1 ( 1 ) to 2 - 1 ( 2 ) are structure views of a shaft of a billiard cue according to the embodiment of the present invention
  • FIG. 2 - 2 ( 3 a ) to 2 - 2 ( 5 ) are views of a billiard cue according to the embodiment of the present invention, showing the structures of a shaft in cross section and external appearances of an internal support structure;
  • FIGS. 3 ( 1 ) to 3 ( 3 ) are views showing a structure and a manufacturing method of a shaft of a billiard cue according to the embodiment of the present invention.
  • FIGS. 4 ( 1 ) and 4 ( 2 ) are views of a billiard cue according to the embodiment of the present invention, depicting a structure and a manufacturing method of a shaft having an internal support structure in which an extended connecting section and a hollow section are formed into a single-piece structure without a ferrule section;
  • FIGS. 5 (A) to 5 (H) are enlarged cross-sectional views illustrating example structures of the top end side of a shaft of a billiard cue according to the embodiment of the present invention
  • FIG. 6 is a view showing an example of an internal structure of a shaft of a billiard cue according to another embodiment of the present invention.
  • FIGS. 7 ( 1 ) to 7 ( 3 ) are views illustrating examples of an internal structure of a shaft of a billiard cue according to yet another embodiment of the present invention
  • FIGS. 7 ( 1 ) and 7 ( 2 ) depict a structure where balsa wood is inserted within the shaft on the top end side thereof
  • FIG. 7 ( 3 ) depicts a combined structure of balsa wood and foamed material.
  • FIG. 1 is a view showing the overall structure of a billiard cue 300 according to an embodiment of the present invention
  • FIGS. 2 - 1 ( 1 ) to 2 - 2 ( 5 ) are views illustrating examples of the internal structure of a shaft of a billiard cue
  • FIGS. 3 ( 1 ) to 3 ( 3 ) are explanatory views of example structures and a manufacturing method of a shaft of a billiard cue
  • FIGS. 4 ( 1 ) and 4 ( 2 ) are explanatory views of an example of an internal support structure having a single-piece construction including an extended connecting section and a support body of a hollow section without the use of a ferrule section
  • FIGS. 1 is a view showing the overall structure of a billiard cue 300 according to an embodiment of the present invention
  • FIGS. 2 - 1 ( 1 ) to 2 - 2 ( 5 ) are views illustrating examples of the internal structure of a shaft of a billiard cue
  • FIG. 5 (A) to 5 (H) are enlarged cross-sectional views showing example structures of the top end side of a shaft
  • FIG. 6 is a structural view showing an example of an internal structure of a shaft of a billiard cue according to another embodiment of the present invention.
  • FIG. 1 is a view showing a billiard cue 300 according to an embodiment of the present invention.
  • the billiard cue 300 includes two major members: a shaft 100 for hitting a ball (not shown); and a butt 200 attached to the back end side of the shaft 100 and gripped by a user.
  • the shaft 100 and the butt 200 are connected to each other with joints (J 1 and J 2 ), forming a single bar-like structure.
  • the shaft 100 and the butt 200 are made from iron wood such as maple, but other materials including metal such as aluminum, synthetic resin, glass fiber, graphite, carbon fiber may also be used.
  • the shaft 100 has a first body end portion 10 a on the side to which the butt 200 is connected, and a second body end portion 10 b on the other side.
  • the shaft 100 has an integrated bar-like construction including a rod-shaped shaft body 10 , a ferrule section 40 having a shape that matches the second body end portion 10 b and attached to the shaft body 10 , and a tip section (an end member) 50 attached to the end portion of the ferule section 40 .
  • the ferrule section 40 is made from various materials including nylon, ABS resin, urethane resin, synthetic resin and the like.
  • the tip section 50 for hitting a ball is made from various materials including pigskin, cow skin, fiber resin and the like. The materials for the ferrule'section and the tip section can be selected as appropriate to suit player's preferences.
  • the shaft 100 there is a hollow section 20 running through inside of the shaft along its axis in the longitudinal direction between the end portion 20 a of the ferrule section 40 and a predetermined position 20 b of the shaft body 10 .
  • an internal support structure 30 which supports the hollow section 20 from inside.
  • Providing the hollow section 20 within the shaft 100 contributes to weight reduction.
  • use of a skeletal body made by combining a number of members instead of use of a solid body contributes to weight saving as it leaves a lot of unfilled spaces.
  • a material lighter than that of the shaft body 10 iron wood such as maple
  • its weight is reduced even further.
  • each member is formed so that the shaft body 10 and the ferrule section 40 are joined via their matching cross-sections and the ferrule section 40 and the tip section 50 are also joined together via their matching cross-sections, without producing any uneven outer surface. Therefore, the entire structure of the shaft is formed into an integrated bar shape.
  • the shaft body 10 and the ferrule potion 40 are joined together by abutting their matching cross sections on each other, or by surface-to-surface attachment of the matching cross section.
  • the ferrule section 40 and the tip section 50 are joined together likewise.
  • FIGS. 2-1 to 2 - 2 show examples of the internal structure of the shaft of a billiard cue.
  • FIG. 2 - 1 ( 1 ) is a structural view of a cross section of a shaft 110 in the longitudinal direction
  • FIG. 2 - 1 ( 2 .) is an enlarged cross-sectional structural view of the top end side of the shaft 110 in the longitudinal direction
  • FIGS. 2 - 2 ( 3 a ) to 2 - 2 ( 3 e ) are structural views of an internal support structure located in the hollow section within the shaft in cross section at right angle relative to the longitudinal direction
  • FIG. 2 - 2 ( 4 ) is an external perspective view of a construction of the structure ( 3 c )
  • FIG. 2 - 2 ( 5 ) is an external perspective view of another example of the structure ( 3 c ).
  • the shaft 110 has a joint J 3 on the side where a butt (not shown) is connected and a ferrule section 41 on the other side. Further, a tip section 51 is attached to the end of the ferrule section 41 , so the entire shaft 110 has an externally-tapered rod shape or narrow cylindrical shape. To obtain this shaft 110 , a shaft body 11 , the ferrule section 41 and the tip section 51 are connected together in this order into a single piece without any visible uneven surface and joint line.
  • the ferrule section 41 of the shaft 110 has a cylindrical shape with a bottom in a U-shape in cross section. Between the bottom portion 31 a and a predetermine position 31 b of the shaft body 11 , a hollow section 21 is provided within the shaft along the core axis of the shaft in the longitudinal direction. Also, an internal support structure 31 is placed within the hollow section 21 , being in contact with the inner wall of the hollow section 21 . The internal support structure 31 is constructed to support the hollow section 21 from within the shaft.
  • the above internal support structure 31 is designed to have its outer frame member that matches the inner wall shape of the hollow section 21 and supports the hollow section 21 by being abutted on or in contact with the inner wall.
  • the length h in longitudinal direction between the end portion 41 a of the ferrule section 41 and the internal support structure 31 is a value that can be decided as appropriate so that the weight and balance of the top end portion of a billiard cue is adjusted to suit user's preferences.
  • a preferred length h including the hollow section 21 is between 18 and 20 cm and, more preferably, about 20 cm.
  • the shaft 110 shown in FIG. 2 - 1 ( 2 ) which shows an enlarged view of the top end side of the shaft 110 shown in FIG. 2 - 1 ( 1 ) includes the shaft body 11 , the ferrule section 41 , and the tip section 51 at the end of the ferrule section 41 , and the hollow section 21 is provided within the shaft 110 .
  • the internal support structure 31 is positioned within the hollow section 21 .
  • the internal support structure 31 is provided with a structural member that is in close contact with the inner wall of the hollow section 21 .
  • the left end portion 31 b of the inner support structure 31 abuts on the inner wall of the hollow section 21 and the right end portion 31 a of the same abuts on the bottom portion 41 b of the ferrule section 41 .
  • the longitudinal length of the hollow section 21 and the length of the internal support structure 31 are equal, and thus there is no space on both sides of the hollow section 21 .
  • the length of the internal support structure 31 may be reduced to create some spaces in the hollow section 21 .
  • these spaces maybe filled with a material such as a plastic material, an expanded polystyrene material, carbon fiber, glass fiber and the like and construct a solid layer.
  • the structures shown in FIG. 2-2 ( 3 a ) has a hollow section 23 inside an outer layer portion ga of the shaft body or the ferrule section, and an outer frame body a 1 and a number of support bodies a 2 as the internal support structure.
  • the outer frame body a 1 is in close contact with the inner wall of the hollow section 23 and supports the hollow section 23 , and the support bodies a 2 hold the structure of the outer frame a 1 .
  • the outer frame body a 1 is shaped so that it abuts on and supports the inner wall of the hollow section 23 . Therefore, since the inner wall of the hollow section 23 has a cylindrical shape, the outer frame body a 1 also has a cylindrical shape and is circular in cross section.
  • the outer frame a 1 does not always need to have a perfect cylindrical shape and can be any shape as long as it can evenly support the structure of the cylindrical hollow section 23 .
  • the outer frame al may be made of a combination of many skeletal members or rod members providing a lot of spaces or hollows in-between the members (see FIG. 2-2 ( 5 )).
  • many support bodies a 2 for supporting the outer frame body a 1 from inside form a group of many equilateral hexagons in cross section, and the blank areas between the structural members represent spaces or hollows. This can be regarded as a “honey comb” structure.
  • the structure of the internal support structure may be constructed by combining long plate-like members in the longitudinal direction so that the structure has the same pattern in each cross section (see FIG. 2 - 2 ( 4 )).
  • a lot of skeletal members or rod members may be combined so that only some cross sections have the pattern of the structure ( 3 a ) with a lot of spaces and hollows (see FIG. 2 - 2 ( 5 )).
  • the structure ( 3 b ) has a hollow section 24 within an outer layer portion gb of a shaft or a ferrule portion.
  • the internal support structure is provided with an outer frame body b 1 which is in close contact with the inner wall of the hollow section 24 and supports the hollow section 24 , and five support bodies b 2 which support the structure of the outer frame body b 1 .
  • the outer frame body b 1 is in contact with the hollow section 24 and has a circular ring shape in cross section.
  • the five support bodies b 2 which support the structure of the outer frame b 1 are arranged in a radial pattern at equal angle towards the inner wall surrounding them.
  • These support bodies b 2 may have a plate shape extending in the longitudinal direction or may be formed by a number of rod-shaped members extending from the center to the surrounding inner wall.
  • This structure ( 3 b ) can be referred to as a “lotus leaf” structure from its cross sectional pattern.
  • the structure shown in FIG. 2-2 ( 3 c ) has a hollow section 25 inside an outer layer portion gc of a shaft body or a ferrule section.
  • An outer frame body c 1 and three support bodies c 2 are provided as an internal support structure.
  • the outer frame body cl abuts on the inner wall surface of the hollow section 25 and supports the hollow section 25 , and the support bodies c 2 hold the structure of the outer frame c 1 .
  • This structure ( 3 c ) has the same construction as the structure ( 3 b ) except that this structure has a fewer support bodies and thus can be called the same “lotus leaf” structure.
  • FIG. 2 - 2 ( 4 ) is an external perspective view of the internal support structure ( 3 c ).
  • This structure includes the cylindrical outer frame body cl and the three support bodies c 2 having a rectangular plate shape, extending in the longitudinal direction and also arranged in a radial pattern from the center to the surrounding inner wall at an equal angle.
  • FIG. 2 - 2 ( 5 ) is an external perspective view showing another example of the internal support structure ( 3 c ).
  • This structure is made by combining a number of rod-shaped members or circular members including frame body members x 1 , internal support members y 1 and support members between the frame bodies z 1 .
  • the structure shown in FIG. 2 - 2 ( 3 d ) has a hollow section 26 within an outer layer portion gd of a shaft body or a ferrule section.
  • This structure is provided with a circular outer frame body d 1 which is in contact with the hollow section like the structures ( 3 a ) to ( 3 c ), and five support bodies d 1 to d 5 as an internal support structure.
  • These five support bodies d 1 to d 5 extend from an inner frame body d 6 in a radial pattern towards the surrounding outer frame body d 1 at an equal angle.
  • the inner frame body d 6 has a circular shape and is approximately co-centric with the outer frame body d 1 .
  • These support bodies d 1 to d 5 may be configured by plate-shape members extending in the longitudinal direction or a number of rod-shaped members extending from the center to the surrounding inner wall.
  • This structure ( 3 d ) may be referred to as an “automotive wheel type” or “sword guard type” structure from its cross-sectional pattern.
  • the structure shown in FIG. 2-2 ( 3 e ) has a hollow section 27 within an outer layer portion ge of a shaft body or a ferrule section. Unlike the structures ( 3 a ) to ( 3 d ), this structure is not provided with an outer frame body (a 1 to d 1 ) which is in contact with the hollow section, but has eight support bodies e 1 to e 8 as an internal support structure. The outer ends of these support bodies e 1 to e 8 come into contact with the inner wall of the hollow section 27 , supporting the structure of the hollow section 27 .
  • the support bodies e 1 to e 8 extend in a radial pattern from the center of the hollow section 27 towards the surrounding inner wall at an equal angle.
  • the support bodies e 1 to e 8 may be a plate-shaped bodies extending in the longitudinal direction, but may also be formed by a number of skeletal rod-shaped bodies extending from the center to the surrounding inner wall.
  • This structure ( 3 e ) may be called a “rib-type” structure from its cross-sectional pattern.
  • FIGS. 3 ( 1 ) to 3 ( 3 ) are explanatory views showing an example of a structure and a manufacturing method of an internal support structure of a shaft of a billiard cue according to the present invention.
  • the shaft illustrated in FIG. 3 ( 1 ) includes a cylindrical shaft body 13 , a ferrule section 43 that is contiguous with the shaft body 13 , a tip portion 53 and an internal support structure 33 .
  • a hollow section 27 a is provided within the shaft body 13 and is open on the side of the ferrule section 43
  • a hollow section 27 b is provided within the ferrule 43 and is open on the side of the shaft body 13 .
  • These hollow sections 27 a and 27 b are formed into a single cylindrical space, and the internal support structure 33 is located within this space.
  • the internal support structure 33 shown in FIG. 3 ( 1 ) has a cylindrical outer shape which fits the inner wall of the hollow section 13 , and has the structure shown in FIG. 2 - 2 ( 3 b ).
  • This internal support structure 33 includes an outer frame body e 1 which is in close contact with the inner wall surface of the hollow section 13 and supports the same, and five support bodies e 2 holding the structure of the outer frame e 1 from inside.
  • the blank areas between the outer frame body e 1 and the support bodies e 2 are spaces S 3 (black areas).
  • the shaft body 13 is manufactured from wood such as maple, glass fiber, carbon fiber, light metal or the like.
  • the column-like hollow section 27 inside the shaft body 13 can be designed so that it is coaxial with the shaft body 13 and the ferrule section 43 , and that the outer diameter and length of the column shape of the hollow section as well as the position of the same are appropriately decided to suit a user's preferences.
  • the internal support structure 33 be manufactured by using a relatively light material such as a lightweight wood, expanded polystyrene, expanded polyethylene, Styrofoam, a plastic material, a fiber material, a light metal material.
  • this internal support structure 33 having a predetermined shape and size may be prepared in advance by machining, extrusion molding, resin injection molding or the like.
  • the internal support structure 33 When this internal support structure 33 is positioned as a support body within the hollow sections 27 ( 27 a and 27 b ) of the shaft body 13 and the ferrule section 43 , the internal support structure 33 may be set at a predetermined position within the hollow sections 27 ( 27 a and 27 b ) by a known method such as insertion, fitting, and adhesion.
  • the structural members of a shaft shown in FIG. 3 ( 2 ) are a cylindrical shaft body 14 , a ferrule section 44 that is contiguous with the shaft body 14 , and a tip section 54 .
  • the shaft body 14 is provided with a hollow section 28 .
  • resin 90 is injected into the hollow section 28 to form the internal support structure 34 .
  • the resin 90 is not filled into the entire hollow section 28 to form a solid body as the internal support structure 34 .
  • a mold K 1 for molding is inserted in the hollow section 28 and then the resin 90 is injected into the empty areas within the hollow section 28 , so that the internal support structure 34 has the structure shown in FIG. 2 - 2 ( 3 b ).
  • FIG. 3 ( 2 ) explains how to manufacture the internal support structure 34 in the above manner. After injection of the resin 90 into the hollow section 28 is completed, unfilled areas along the mold K 1 remain as hollows (spaces).
  • FIG. 3 ( 3 ) is an explanatory view of the structure of a shaft having an internal support structure 35 placed in the hollow section.
  • the internal support structure 35 has the “lotus leaf” shape in cross section illustrated in FIG. 2 - 3 ( 3 b ) or the “rib-type” shape shown in FIG. 2 - 2 ( 3 d ), and spaces S 10 are formed among a plurality of support bodies.
  • FIG. 4 ( 1 ) shows a shaft body 15 having a hollow section 29 and an integrated internal support structure 60 in which an internal support structure and a ferrule section are integrated into a single piece of support structure (a ferrule-integrated structure).
  • the integrated internal support structure 60 includes an internal support structure portion 60 a and the ferrule portion 60 b described above, which cannot be separated as they are combined together as a single member.
  • the internal support structure 60 may have any of the structures explained earlier with reference to FIGS. 2 - 1 ( 1 ) to 3 ( c ) and can be manufactured easily by machining, extrusion molding, resin injection molding and the like.
  • the ferrule portion 60 b of the integrated internal support structure 60 is the extended connecting section.
  • an elastic pad 70 which matches the shape of the top end surface jt is attached with adhesive, and a tip portion 55 is further attached to the extended connecting section through the elastic pad 70 .
  • FIG. 4 ( 2 ) is an enlarged explanatory view of the shaft structure shown in FIG. 4 ( 1 ).
  • the ferrule portion (extended connecting section) 60 b are integrated with the outer side of the internal support structure portion 60 a , and spaces S 20 each having a sector shape in cross section and extending within the shaft in the longitudinal direction are arranged at five separate positions within the integrated internal support structure 60 .
  • the internal support structure 31 is positioned in the hollow section 21 provided in the shaft 110 , and it is preferred that the internal support structure 31 be made so that it has better structural strength and lighter weight. In order to do so, it is preferred to use light-weight reinforced plastic, carbon fiber, stiff expanded polystyrene and the like for the internal support structure 31 .
  • the shaft body 11 is usually manufactured by wood (maple) or resin, if one focuses on weight reduction in selecting a material of the internal support structure 31 , it is feasible to select a material which weighs same as a normal material of the shaft body 11 .
  • Maple wood used for the shaft body 11 has an air-dried specific gravity of about 0.7, but balsa wood is lighter than maple and its air-dried specific gravity is about 0.1 to 0.2.
  • super light materials compared to maple wood including expanded polystyrene (specific gravity: 0.01 to 0.02), expanded polyethylene (specific gravity: 0.01 to 0.02), and a styrene board (specific gravity: 0.1 to 0.15). However, these materials are not as stiff as wood, and therefore, when these super light materials are used, it is necessary to design the internal support structure 31 to ensure sufficient structural strength.
  • a material of the internal support structure 31 may be designed based on comparison of weight (specific gravity) between the internal support structure 31 and the shaft body 11 , and may be selected as appropriate from light or super light wood materials, expanded polystyrene, expanded polyethylene, Styrofoam, a plastic material, a fiber material and the like.
  • weight specific gravity
  • the internal support structure 31 In positioning or providing the internal support structure 31 into the hollow section 21 , the internal support structure 31 is manufactured so that it has the shape and size which fit into the hollow section, and the internal support structure 31 may be inserted and adhered to the hollow section.
  • the internal support structure 31 may also be positioned by other ways like pushing, fitting, pressing and the like before being fixed.
  • Another method for manufacturing an internal support structure is to prepare mold pieces for forming hollows and use solidifying means such as resin. Specifically, these mold pieces are set at predetermined positions within the hollow section, and a liquid, a molten state resin or the like is injected into the hollow section and solidified within the hollow section to form the internal support structure.
  • the internal support structure can be formed within the hollow section easily by injecting a liquid-state hardening resin such as urethane foam, epoxy resin, synthetic resin and the like.
  • the cylindrical internal support structure 31 can be manufactured in advance to match the shape and size of the hollow section 21 which runs through the inside of the shaft 110 .
  • the hollow section 21 may not be circular in cross section or may be tapered in the longitudinal direction. In that case, the internal support structure 31 needs to be designed and formed to accurately match the shape and size of such hollow section.
  • the internal support structure 31 is first set within the hollow section 21 and then the shaft body 11 and the ferrule section 41 are joined together.
  • the shaft body 11 and the ferrule section 41 may be joined together first and then the internal support structure 31 may be inserted into the hollow section 21 from the opening.
  • the diameter of the hollow section 21 may be, for example, about 10 mm.
  • the shaft 110 usually tapers towards the tip section. Therefore, the longitudinal shape of the hollow section 21 may be tapered to match the shape of such shaft 110 .
  • the shaft 100 usually has a circular shape in cross section, it may have polygonal or other shapes in cross section. Accordingly, the cross-sectional shape of the hollow section 21 is not limited to circle and may be formed to match the cross-sectional shape of the shaft 100 .
  • FIGS. 5 (A) to 5 (H) are views illustrating various examples of the structures of a shaft of a billiard cue on the top end side.
  • FIGS. 5 (B) to 5 (D) show the structures where an elastic material (elastic pad) is provided between the ferrule section 40 and the tip section 50 .
  • FIGS. 5 (E) and 5 (F) show structures with no ferrule section.
  • FIG. 5 (G) shows a structure where a small-size ferrule section is formed at the position where an elastic pad is usually provided.
  • the structure shown in FIG. 5 (H) is similar to that shown in FIG.
  • the interposed material such as an elastic material have functions such as absorbing impact of a ball and extending ball contact time, and may be employed as appropriate to suit player's preferences and shot feeling. Materials with high elasticity such as rubber and resin are preferred.
  • FIG. 5 (A) The structure shown in FIG. 5 (A) is provided with an internal support structure 30 A in the hollow section formed by a shaft body 10 A and a ferrule section 40 A.
  • the ferrule section 40 A has cylindrical shape with a ceiling portion A 1 (bottom), and a tip section 50 A (top end portion) is attached through the ceiling portion A 1 of the ferrule section 40 A.
  • FIG. 5 (B) The structure shown in FIG. 5 (B) is provided with an internal support structure 30 B in the hollow section formed by a shaft body 10 B and a ferrule section 40 B.
  • the ferrule section 40 B has a cylindrical shape, but, unlike the structure shown in FIG. 5 (A), it does not have a ceiling portion. Instead, there is an elastic pad 70 B directly attached to the circular top end surface of the ferrule section 40 B and the top end surface of the internal support structure 30 B. Further, a tip section 50 B is attached to the elastic pad 70 B.
  • FIG. 5 (B) depicts a structure where the internal support structure 30 B set within the shaft is covered with a pipe-like ferrule section 40 B, and the elastic pad 70 B is attached to the ferrule section 40 B.
  • FIG. 5 (C) The structure shown in FIG. 5 (C) is provided with a shaft body 10 C, a ferrule section 40 C, an internal support structure 30 C, an elastic pad 70 C, and a tip section 50 C.
  • This structure is basically the same as that shown in FIG. 5 (B) but a difference is that the elastic pad 70 C has an extended portion C, which is the outer edge part of the elastic pad 70 C extended towards the ferrule section. Therefore, the joining area of the ferrule section 40 C, where the elastic pad 70 C is attached or abutted, has a shape that matches the extended portion C of the elastic pad 70 C.
  • the structure shown in FIG. 5 (D) is provided with a shaft body 10 D, a ferrule section 40 D, an internal support structure 30 D, an elastic pad 70 D, and a tip section 50 D.
  • This structure is basically the same as the structure shown in FIG. 5 (B) except that the elastic pad 70 D has a projected portion D 1 , a part of the elastic pad 70 D protruding towards the internal support structure 30 D. Therefore, the top surface shape of the internal support structure 30 D, where the elastic pad 70 D is attached or abutted, has a shape that matches the shape of the projected portion D 1 of the elastic pad 70 D.
  • the structure shown in FIG. 5 (E) is provided with a shaft body 10 E, an extended connecting section e 1 , and a tip section 50 E, and, unlike the structures shown in FIGS. 5 (A) to 5 (D), a ferrule section is not provided. Therefore, the internal support structure 30 E is a single piece (integrated) structure of a support member e 2 within the hollow section and the extended connecting section e 1 .
  • This internal support structure 30 E is the “ferrule integrated structure,” in which a ferrule section and internal structure within a hollow section are joined together into a single piece. Since there is no ferrule section, the outer circumference of the extended connecting section e 1 is exposed, which is the same as the structure explained in FIGS. 4 (A) and 4 (B) earlier.
  • the structure shown in FIG. 5 (F) includes a shaft body 10 F, an internal support structure 30 F, an elastic pad 70 E and a tip section 50 F.
  • the internal support structure 30 F is a single piece (integrated) support structure including a support member f 2 within the hollow section and an extended connecting section f 1 . Similarly to the structure shown in FIG. 5 (E), this structure has no ferrule section, and the outer circumference of the extended connecting section f 1 is thus exposed.
  • the internal support structure 30 F is also the “ferrule integrated structure” in which the ferrule section and the internal structure are joined together into a single piece, and is the same as the structure shown in FIG. 5 (E) except that an elastic pad 70 F is added. Therefore, the top area of this structure has the three-layered construction of the internal support structure 30 F, the elastic pad 70 F, and a tip section 50 F.
  • the structure shown in FIG. 5 (G) includes a shaft body 10 G, an internal support structure 30 G, a ferrule section 40 G, and a tip section 50 G.
  • the internal support structure 30 G is a single-piece (integrated) structure including a support member g 2 within the hollow section and an extended connecting section g 1 , and the outer circumference of the extended connection portion g 1 is exposed.
  • the ferrule section 40 G is positioned between the internal support structure 30 G and the tip section 50 G, and the structure of this ferrule portion 40 G is slightly different from those of the other structures; the ferrule section 40 G includes a circular part G 1 and a ceiling part G 2 and its external appearance is contiguous with the shaft body 10 G and the internal support structure 30 G.
  • This structure shown in FIG. 5 (G) is obtained by replacing the elastic pad 70 C in the structure of FIG. 5 (C) with the ferrule section 40 G.
  • the structure shown in FIG. 5 (H) is basically similar to the structure shown in FIG. 5 (A), and provided with a shaft body 10 H, a ferrule section 40 H, and an internal support structure 30 H in the hollow section formed by the shaft body 10 H and the ferrule section 40 H.
  • the ferrule section 40 H has a cylindrical shape with a ceiling portion H 1 (bottom), and a tip section 50 H (top end portion) is attached to the shaft body 10 H through the ceiling portion H 1 .
  • This structure has a pipe-like internal annulus ring section 10 h provided in the inner side of the shaft body 10 H. .
  • the internal annulus ring section 10 h is an extension of the inner circumference part of a shaft body 10 H on the side of the hollow section, formed along the inner wall of a ferrule section 40 H.
  • this structure has a two-layered pipe construction in the ferrule section 41 .
  • FIG. 6 is a view showing an example of the internal structure of a shaft of a billiard cue according to another embodiment of the present invention.
  • FIG. 6 is an enlarged view of the top end side of the shaft 120 of a billiard cue, and the shaft 120 includes a shaft body 12 , a ferrule section 41 , and a tip section 52 on the end side of the ferrule section 41 .
  • a hollow section 22 is provided within the shaft 120 , and an internal support structure 80 is positioned within the hollow section 22 .
  • the internal support structure 80 includes a pipe member 80 A which is in close contact with the inner wall of the hollow section 22 , a structure body 80 B located on the side of the tip 52 within the pipe member 80 A, and a solid portion 80 C which fills the remaining areas within the pipe member 80 A.
  • the pipe member 80 A and the structure body 80 B are similar to the internal support structure explained above (see FIGS. 2 - 1 ( 1 ) to 4 ( 2 )). Compared with the structure shown in FIG. 2-2 ( 3 a ), the pipe member 80 A is an equivalent of the outer frame body a 1 , and the structure body 80 B is an equivalent of the internal support member a 2 .
  • the pipe member 80 A and the structure body 80 B are formed into a single piece by using light-weight reinforced plastic, carbon fiber, expanded polystyrene with stiffness and the like.
  • a material of the solid portion 80 C within the pipe member 80 A is light-weight wood, a plastic material, expanded polystyrene, urethane foam or the like. The material is filled, inserted, or fitted at a predetermined position in the space within the pipe member 80 A except the space filled with the structure body 80 B, thus the solid portion 80 C is obtained.
  • the hollow section 22 and the internal support structure 80 are manufactured so that their diameters and the longitudinal lengths match each other, and then fit each other. In that case, an adhesive may be used.
  • the hollow section 22 and the internal support structure 80 of the shaft 120 have the same length in the longitudinal direction. However, it is also possible to slightly reduce the length of the internal support structure 80 to make a space within the hollow section 22 .
  • the pipe member 80 A may not fill the entire space except the space filled in by the structure body 80 B to create a space within the pipe member 80 A.
  • FIG. 7 ( 1 ) to 7 ( 3 ) are cross-sectional views depicting examples of an internal structure of a shaft of a billiard cue according to yet another embodiment of the present invention.
  • FIG. 7 ( 1 ) shows the entire view of a shaft 160
  • FIG. 7 ( 2 ) shows an enlarged view of the top end side of the shaft 160
  • FIG. 7 ( 3 ) is a view showing an example of the internal support structure, which is different from the structure shown in FIG. 7 ( 2 ).
  • the shaft 160 in FIG. 7 ( 1 ) includes a shaft body 16 , a ferrule section 46 , a tip section 56 provided on the end of the ferrule section 46 , and a joint j 6 , and there is a hollow section 16 C within the shaft body 16 .
  • an internal support structure 36 is placed within the hollow section 16 C.
  • the right end 36 a of the internal support structure 36 abuts on the ferrule section 46
  • the length h 6 between the right end 36 a and the left end 36 b represents the length of the internal support structure 36 and equal to the length of the hollow section 16 C.
  • FIGS. 7 ( 2 ) and 7 ( 3 ) depict examples of the construction of the internal support structure 36 in the shaft body 16 .
  • the internal support structure 36 uses a support body made from a light-weight material such as a light-weight wood like balsa wood, a foam material, a carbon fiber material, and a plastic material, and this support body is filled in the hollow section 16 C to support the shaft 16 .
  • a light-weight material such as a light-weight wood like balsa wood, a foam material, a carbon fiber material, and a plastic material
  • the support body made from a light-weight material as above may be formed by a single piece material or a combination or a joint body of a plurality of materials.
  • FIG. 7 ( 2 ) shows an example where the internal support structure 36 is formed from a single piece of a light-weight wood 36 A such as balsa wood.
  • FIG. 7 ( 3 ) shows an example where the internal support structure 36 has a combination of a light-weight wood 36 a and a foam material 36 b.
  • the length h 6 of the internal support structure 36 is about 12 to 20 cm.
  • the entire internal support structure 36 may be formed by a single type of material as shown in FIG. 7 ( 2 ) or by two types of materials that are joined together into a single piece like the structure shown in FIG. 7 ( 3 ).
  • the support body manufactured from a light-weight material and inserted into the internal support structure 36 shown in FIGS. 7 ( 1 ) to 7 ( 3 ) is formed so that it has shape or size that match the internal cylindrical shape of the hollow section 16 C of the shaft body 16 , and thus the internal support structure 36 can be manufactured extremely easily at low cost.
  • the internal support structure 36 shown in FIGS. 7 ( 1 ) to 7 ( 3 ) one can freely select a combination or joining of two ore more kinds of materials, and how to combine, arrange, and mix (set a ratio) of materials can be decided freely. This means that the internal support structure 36 can be adjusted or designed to suit player's preferences and ability.
  • the internal support structure 36 in the shaft body 16 is formed by a single piece or a combination of light-weight materials including light-weight wood such as balsa wood, a foam material, a carbon fiber material, a plastic material, and the like.
  • the shaft 160 shown in FIGS. 7 ( 1 ) and 7 ( 2 ) has a hole (hollow section 16 C) in the shaft body 16 , and a light-weight wood having size and shape that fit in the hollow section 16 C is inserted into the center of the hollow section 16 C.
  • the billiard cue having this shaft can give a player fulfilling feeling of billiard play without jeopardizing the natural characteristics of wood material (mainly maple) used for the shaft, including elasticity, shot feeling, and sensation. This gives the billiard cue an outstanding performance and characteristics.
  • wood material mainly maple
  • the shaft structure of the present invention realizes not only weight reduction of the top end portion but also improvements in strength and stability.
  • the internal support structure 36 shown in FIG. 7 ( 3 ) shows an example of a combination structure of balsa wood and a foam material, where about 70% of the structure on the back side is made from balsa wood and the remaining 30% on the top end side is made from a foam material. In this manner, the performance of the shaft can be adjusted easily to suit player's preferences and ability.
  • balsa wood and a foam material maybe combined in a multiple ways to change the performance of the shaft.
  • a path of a ball can be changed by adjusting length or thickness of a foam material.

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US11/392,986 2005-07-11 2006-03-30 Billiard cue Abandoned US20070010340A1 (en)

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JP2005-202174 2005-07-11
JP2005202174 2005-07-11
JP2005318610A JP2007125108A (ja) 2005-07-11 2005-11-01 ビリヤードキュー
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080127721A1 (en) * 2006-12-01 2008-06-05 Shields Daniel D Method, system and apparatus for achieving level balance in an instrument
WO2008155684A1 (en) * 2007-06-21 2008-12-24 Prince Sports Inc. Billiard cue having a multiple tube structure
EP2051786A1 (en) * 2006-07-26 2009-04-29 The Gravity Cue Company Limited Sports cue training aid
US20100048312A1 (en) * 2008-08-21 2010-02-25 Tsai Po-Wen Cue stick
CN101830020A (zh) * 2010-04-15 2010-09-15 王土林 一种台球杆的制作方法
US8801527B2 (en) 2011-12-21 2014-08-12 Mark Larson Pool cue
US8876618B1 (en) 2013-10-16 2014-11-04 Lienard Brown Cue stick for billiards sports
KR101618196B1 (ko) 2014-06-30 2016-05-04 김무기 당구 큐
EP2978512A4 (en) * 2014-03-24 2017-06-21 Clawson Custom Cues, Inc. Cue shaft tip insert
US20210077896A1 (en) * 2019-09-18 2021-03-18 McDermott Cue Mfg., LLC Cue with kinetic energy absorbing insert
US11224795B2 (en) 2018-12-12 2022-01-18 McDermott Cue Mfg., LLC Adjustable weighting sytem for a cue stick

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JP5348908B2 (ja) * 2008-02-27 2013-11-20 株式会社三木 棒状体およびその製造方法
KR101070417B1 (ko) 2010-08-23 2011-10-06 이동철 당구 큐의 팁 가공장치
JP3164396U (ja) * 2010-09-15 2010-11-25 株式会社カムイ ビリヤードタップ
CN102553217A (zh) * 2011-12-31 2012-07-11 季志刚 一种能套在手上的台球杆支撑架
JP6822671B2 (ja) * 2018-01-29 2021-01-27 株式会社Ｂｅｅ’ｓ Ｇｒｏｏｖｅ シャフト及びシャフトの製造方法
KR102065852B1 (ko) * 2018-08-17 2020-01-13 박성민 휨 방지 당구큐 구조
BE1026872B1 (nl) * 2018-12-17 2020-07-13 Hcsb Bvba Eindstuk voor keu
CN112774176B (zh) * 2020-12-30 2022-10-21 广联航空工业股份有限公司 一种具有自动加力并可调节重心点的台球杆的制作方法
CN113769365A (zh) * 2021-10-21 2021-12-10 裴燃 一种复合型台球杆
CN114618151A (zh) * 2022-03-16 2022-06-14 宫殿玉 一种碳纤维台球杆及其制作工艺

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US951453A (en) * 1909-05-28 1910-03-08 Burroughes & Watts Ltd Billiard-cue.
US1007668A (en) * 1911-04-29 1911-11-07 Joseph Ernest Barrows Cue for billiards and like games.
US1280876A (en) * 1916-08-18 1918-10-08 Charles Seenan Billiard-cue.
US1702292A (en) * 1925-09-03 1929-02-19 Barbarite Corp Billiard cue
US3368271A (en) * 1965-08-18 1968-02-13 St Croix Corp Method of making a two-piece billiard cue
US6162128A (en) * 1994-09-29 2000-12-19 The Lorraine C. Mccarty Trust Billiard/pool cue
US20030153393A1 (en) * 2002-02-08 2003-08-14 Jung-Shih Chang Billiard cue
US20060019761A1 (en) * 2004-07-26 2006-01-26 Stephen Titus Hybrid billiard cue shaft

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02112405U (ja) * 1989-02-28 1990-09-07
JP2002346023A (ja) * 2001-05-29 2002-12-03 Miki Co Ltd ビリヤードキュー

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US951453A (en) * 1909-05-28 1910-03-08 Burroughes & Watts Ltd Billiard-cue.
US1007668A (en) * 1911-04-29 1911-11-07 Joseph Ernest Barrows Cue for billiards and like games.
US1280876A (en) * 1916-08-18 1918-10-08 Charles Seenan Billiard-cue.
US1702292A (en) * 1925-09-03 1929-02-19 Barbarite Corp Billiard cue
US3368271A (en) * 1965-08-18 1968-02-13 St Croix Corp Method of making a two-piece billiard cue
US6162128A (en) * 1994-09-29 2000-12-19 The Lorraine C. Mccarty Trust Billiard/pool cue
US20030153393A1 (en) * 2002-02-08 2003-08-14 Jung-Shih Chang Billiard cue
US20060019761A1 (en) * 2004-07-26 2006-01-26 Stephen Titus Hybrid billiard cue shaft

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2051786A1 (en) * 2006-07-26 2009-04-29 The Gravity Cue Company Limited Sports cue training aid
US20090186713A1 (en) * 2006-07-26 2009-07-23 The Gravity Cue Company Limited Sports cue training aid
US20080127721A1 (en) * 2006-12-01 2008-06-05 Shields Daniel D Method, system and apparatus for achieving level balance in an instrument
US7749091B2 (en) * 2006-12-01 2010-07-06 High Desert Dynamics, Llc. Method, system and apparatus for achieving level balance in an instrument
WO2008155684A1 (en) * 2007-06-21 2008-12-24 Prince Sports Inc. Billiard cue having a multiple tube structure
US20100048312A1 (en) * 2008-08-21 2010-02-25 Tsai Po-Wen Cue stick
US7677985B1 (en) * 2008-08-21 2010-03-16 Po-Wen Tsai Cue stick
CN101830020A (zh) * 2010-04-15 2010-09-15 王土林 一种台球杆的制作方法
US8801527B2 (en) 2011-12-21 2014-08-12 Mark Larson Pool cue
US8876618B1 (en) 2013-10-16 2014-11-04 Lienard Brown Cue stick for billiards sports
WO2015057867A1 (en) * 2013-10-16 2015-04-23 Brown Lienard Cue stick for billiards sports
EP2978512A4 (en) * 2014-03-24 2017-06-21 Clawson Custom Cues, Inc. Cue shaft tip insert
US9814963B2 (en) 2014-03-24 2017-11-14 Clawson Custom Cues, Inc. Cue shaft tip insert
KR101618196B1 (ko) 2014-06-30 2016-05-04 김무기 당구 큐
US11224795B2 (en) 2018-12-12 2022-01-18 McDermott Cue Mfg., LLC Adjustable weighting sytem for a cue stick
US20210077896A1 (en) * 2019-09-18 2021-03-18 McDermott Cue Mfg., LLC Cue with kinetic energy absorbing insert
EP3795223A1 (en) * 2019-09-18 2021-03-24 McDermott Cue Mfg., LLC Cue with kinetic energy absorbing insert
US11534676B2 (en) * 2019-09-18 2022-12-27 McDermott Cue Mfg., LLC Cue with kinetic energy absorbing insert

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JP2007125108A (ja) 2007-05-24
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