Abstract: A cue stick is provided having a laser sighting mechanism that is in precise alignment with the longitudinal axis of the cue stick. A laser unit is placed within the cue stick, at a location that is substantially adjacent to the cue tip. An aperture is formed in the center of the cue tip, such that the opening through which the laser light will emerge is coaxial with the longitudinal axis of the cue stick. A sufficient number of storage batteries are also located within the cue stick, and an activation switch is provided to selectively energize the laser unit when an emission of laser light though the cue tip aperture is desired.

Abstract: The english and trajectory assistant is a device to aid a player of ball and pocket games to properly strike his primary target ball, resulting in a favorable shot. The device is an attachment which can be fastened to any existing playing stick. The assistant simultaneously projects cross hairs onto the primary and secondary target balls without moving the stick from the shooting position. The device is easily removed and replaced with a traditional stick end. The tip is easily replaced by being unscrewed. Shape, balance, and weight of the stick are not altered.

Abstract: A billiard cue includes a shaft having a hollow bore extending from at least a predetermined distance from a first end toward a second end. The bore forms an outer wall in the shaft having a thickness between about 0.03 and 0.05 inches. The shaft is preferably formed of a composite material consisting of fibers in a binder, such as carbon fibers in an epoxy resin. The shaft material has a modulus of elasticity of at least 4.3.times.10.sup.6 psi. The bore extending from the first end of the shaft, the thin wall thickness of the shaft adjacent to the first end and the material forming the shaft combine to decrease the mass of the tip end of the shaft while maintaining substantially all of the stiffness of a conventional shaft formed of a hard maple to minimize buckling of the tip end of the shaft and thereby substantially decrease deflection of the cue ball from its intended path of movement along a path parallel to the stroke axis of the shaft.

Abstract: A pool cue holder attachment for holding pool cues to the side of a table. Included is a base block having a plurality of spaced apart bores extending between the top and bottom sides of the base block. The base block also has a plurality slots with each slot extending between the front side of the base block and an associated bore of the base block. A cover member for covering the ends and sides of the base block. A pair of clamp members are coupled to the cover member, the clamp members is adapted for detachable attachment to a side of a table.

Abstract: A pool cue having a sliding bridge sleeve with cleaning wipers provides for a smooth linear motion of the bridge sleeve while preventing frictional resistance due to contaminant buildup between the bridge sleeve bearings and the linear shaft of the pool cue.

Abstract: A multiple piece cue stick includes multiple stick portions which are coupled together by a sleeve bushing secured to one stick portion and a coupling rod secured to another stick portion. The coupling rod has an elongate shaft which fits within a smooth bore of the sleeve bushing and is coupled to the sleeve bushing by engaging male threads of the coupling rod with female threads of the sleeve bushing.

Abstract: A billiard cue includes a shaft with a tube received in the front end thereof and a ferrule member is engaged with the tube in which batteries are received. The ferrule member has a beam emitting device connected to the front end thereof which has an aperture defined therethrough. A switch is connected to the ferrule member and electrically connected to the beam emitting device. A tip is attached to the distal end of the beam emitting device and has a passage defined therethrough which is in alignment with the aperture.

Abstract: A luminescent billiard game system is disclosed providing an interesting and fun variation of the game which allows the game to be played in limited lighting conditions. The system comprises a billiard table having a number of luminescent surfaces which indicate the table perimeter edges, pocket locations, starting lines, distance indicators, and center point of the table. Additionally, cue stick tips are provided with luminescent material along with the billiard balls. A cabinet is also provided for charging the cue sticks and balls with concentrated light, for billiard tables not equipped with automatic ball returns, the light is activated upon closure of the cabinet and includes highly reflective interior surfaces. A ball bin charging light is also provided for charging balls on billiard tables equipped with automatic ball returns, while the charging light is also utilized to transmit light, optic fibers, to desired locations on the billiard table.

Abstract: A universal joint 10 for the extension of billiard cues. The joint comprises a joint element 12 generally tubular and adapted to hold at one end the front end of an extension and to receive at the other end the butt end of a billiard cue, and a generally tubular tightening element 14 adapted to lock the cue inside the joint element 12. The joint 10' is operative irrespective of the outer diameter of the butt terminal part of the cue received therein, by the combined action of slits 42, tapered portions 28, 38, 40 and resilience of the material of which the joint element 12 is made.

Abstract: A multiple piece cue stick includes multiple stick portions which are coupled together by a sleeve bushing secured to one stick portion and a coupling rod secured to another stick portion. The coupling rod has a elongate shaft which fits within a smooth bore of the sleeve bushing and is coupled to the sleeve bushing by engaging male threads of the coupling rod with female threads of the sleeve bushing.

Abstract: An improved main joint and/or A joint for a billiard cue stick of the type having at least two detachable sections. The joints include mating tenons extending from opposing sections of the cue stick, and a threaded screw anchored in one of the two sections and extending axially outward through the respective tenon for screw insertion into the mating tenon of the second section. A single or dual-ring collar is also provided for encircling the mating tenons of the two sections. The collar encircles the tenons when the two sections are fully screwed together, and confines the tenons as the screw force causes them to expand. Both the A joint and main joint give an improved self-aligning compression fit. A billiard cue incorporating one or both of said joints will have an increased level of structural integrity in order to reduce deflection and resonance when the billiard cue strikes a cue ball. This helps to give the feel of a solid one-piece cue stick and increases the accuracy and life expectancy thereof.

Abstract: A threadable joint in a tunable cue for joining together butt and shaft sectional pieces. Threaded joint sections include a cylindrical bore, extending longitudinally through the entire length of the joint, for receiving a multiplicity of inserts. Such inserts fit within the bore and provide for a wood-to-wood continuum in the heart of the cue. Several inserts selected from different wood types and compressibility amounts within the assembled cue provide for user customization.

Abstract: A carpet pool game and method of playing the same employing three different sets of game balls, mallets and a detachably interconnected assembly of side boards and goal boards including an integrally formed ramp structure preventing game balls from coming to rest too close to the outer boundary of the game.

Abstract: A power supply control circuit controls power supply to a circuit when an external unit is connected to and/or disconnected from a terminal unit to which the circuit is coupled. The power supply control circuit includes a first sensor for detecting whether or not the external unit is in a first state where the external unit is close to the terminal unit, a second sensor for detecting whether or not external unit which has been already connected to the terminal unit is in a second state, and a control circuit for controlling the power supply to the circuit in accordance with detecting results obtained by the first and second sensors. In addition the above power supply control circuit is applied to a computer game machine having a main circuit coupled to a cartridge slot to which a cartridge is to be connected.

Abstract: A cue stick adapted for table sports includes a first portion having a tenon disposed at a first end thereof. The cue stick also includes a first joint disposed at a second end thereof and a second portion having a second joint adapted to mate with the first joint disposed at a first end of the second portion and a butt disposed at a second end thereof. The first and second portions comprise an elongated conic section when joined and have the tenon disposed at a narrower end of the conic section than the butt. The cue stick includes a raised straight edge having a length less than a distance separating the first joint from the tenon and attachment means for securing the raised straight edge to the first portion on an outside surface thereof and substantially parallel to a longitudinal axis thereof.

Abstract: The invention is a pool stick in which the slide portion has a triangular cross-section tapering toward the tip.

Abstract: A billiard cue having a separate handle and shaft utilizes a quick operating connector to join the handle and shaft. The connector consists of male and female sections which are secured in the ends of the handle and shaft. The male section contains a cylindrical bar having an accurately machined diameter which snugly fits into a cylindrical cavity of the female section which is slightly oversized with respect to the male bar's diameter. The male bar and female cavity are axially aligned in the cue sections, and the bar engages the cavity over a linear distance sufficient to ensure accurate alignment of the handle and shaft when joined. Two flats at the end of the male bar provide a reduced diameter portion of the bar tip which fits between partial bulkheads within the female cavity, allowing insertion of the bar into the cavity.

Abstract: A pool cue with a sight or aiming aid integrally associated therewith in the form of a narrow straight line centered along the top of the cue to be aligned with the ball, pocket in the background, or similar target. The cue is formed as two separate pieces of about the same length which screw together. The front piece is a tapered metal tube or rod terminating in the tip which strikes the ball. A cold-roll-forming machine is used to pinch the front piece together deforming the cross-section from a circle and creating a top line for sighting or alignment purposes.

Abstract: A multiple piece cue stick includes multiple stick portions which are coupled together by a sleeve bushing secured to one stick portion and a coupling rod secured to another stick portion. The coupling rod has a elongate shaft which fits within a smooth bore of the sleeve bushing and is coupled to the sleeve bushing by engaging male threads of the coupling rod with female threads of the sleeve bushing.

Abstract: A multiple piece cue stick includes multiple stick portions which are coupled together by a sleeve bushing secured to one stick portion and a coupling rod secured to another stick portion. The coupling rod has a elongate shaft which fits within a smooth bore of the sleeve bushing and is coupled to the sleeve bushing by engaging male threads of the coupling rod with female threads of the sleeve bushing.

Abstract: A ball striking cue comprises a butt section, a shaft section, and a self-locking joint for removably interconnecting the butt and shaft sections end to end. The joint includes the proximate end of the shaft section formed with a conical hole, and the proximate end of the butt section formed with a conical extension. These hole and extension constitute the unique point of contact between the butt and shaft sections. They have complementary shapes and the hole has smaller radial dimensions than the extension whereby the extension can be forced in the hole to press fit the extension in the hole and thereby removably interconnect the butt and shaft sections with a spacing between the bottom of the hole and the free end of the extension. The conical hole and extension widens out and tapers, respectively, at an angle which is function of the nature of their material to enable press fit and retention of the extension in the hole while enabling separation thereof by forcing them axially apart from each other.

Abstract: The invention is an improved pool cue with a spring loaded tip is mounted in a hollowed out portion at the front of the cue or stick and is freely movable forward and backward within the confines of the hollowed out portion. A spring biases the tip to the back of the hollowed out portion and allows for the tip to be compressed at the moment of striking the ball. The area where the spring is mounted is encased in silicone for further compressibility.

Abstract: A cue connector for detachably joining a shaft section and a butt section of a billiard or pool cue. The connector comprises a one-piece, integrally formed fitting in threaded securement to a threaded extension of the butt section which includes a threaded pin for manual detachable threading engagement with the threaded bore of an externally threaded insert fitting arranged for threaded securement with a threaded re-entrant bore of the shaft section.

Abstract: This invention relates to an apparatus for causing a pool cue ball to jump and thereby avoid an opponent's safety blocking ball utilizing a cue stick of approximately one half of the standard length, and having a plurality of apertures within a carrier in a radial slot in the handle end of the stick wherein selected weights may be secured to adjust the weight of the stick for different shooting styles and for different weights of cue balls.