Abstract: Provided is a water track marker (1) for marking a sports track, such as a water ski track, on a water surface (20). The water track marker comprises at least a first marker ejector (11) configured to eject marker projectiles (2) towards the water for creating an instant marking (3) on the water surface (20) upon impact with the water surface (20). Provided is also a method for marking a sports track and a towing boat comprising said water track marker.

Abstract: Aspects of the present disclosure deal with bow stabilizers mounted or mountable on an archery bow. The stabilizer incorporates a hollow housing with a proximal end and a distal end. Mounted to the distal end of the housing is a coupling formed of elastic vibration damping material. The coupling includes an outer wall section extending within the housing and a cylinder spaced inward from the outer wall section. Extending between the outer wall section and the cylinder are one or more flexible connectors. The cylinder supports a shaft with an inner weight mounted to a first end and spaced inward from the housing. The shaft and inner weight are arranged in a floating arrangement where oscillation of the shaft and inner weight does not impact the housing.

Abstract: In some embodiments, an archery bow comprises a riser and a bushing attached to the riser. In some embodiments, the bushing comprises a flange and a tubular shaft. In some embodiments, the tubular shaft comprises an external helical thread and an internal helical thread. In some embodiments, the flange comprises a front portion and a rear portion, the rear portion comprising a rear surface in contact with the riser. In some embodiments, the front portion comprises a recessed portion and a contacting ring. In some embodiments, a diameter of the contacting ring is greater than a distance across the external helical thread.

Abstract: A titanium stabilizer rod for an archery bow preferably includes a base portion, a middle portion and a weight retention portion. The base portion extends from one end of the middle portion and the weight retention portion extends from an opposing end of the middle portion. A threaded stud extends from the base portion. A threaded tap is formed in the weight retention portion or a weight threaded stud extends from an opposing end of the weight retention portion. A stabilizer weight includes a threaded stud, which is threaded into the threaded tap of the weight retention portion. The stabilizer weight may also include a weight hole. The threaded stud is inserted through the weight hole and retained on the titanium stabilizer rod with a threaded nut. A lengthwise opening is preferably formed through an entire length of the titanium stabilizer rod.

Abstract: A stabilizer shock mount attachable to a bow stabilizer assists in quieting the stabilizer during the drawing of a bow and after the bow is fired. The stabilizer shock mount has a first end attachable to the bow and a second end attachable to the bow stabilizer. The stabilizer shock mount allows the bow stabilizer to flex such that the vibrations from the bow stabilizer will not be transferred back to the bow. Additionally, when drawing the bow, the stabilizer shock mount allows the bow stabilizer to achieve stillness more quickly.

Abstract: Improvements in an airsoft kit to convert an airsoft gun to fire paintballs is disclosed. The airsoft kit to convert an airsoft gun to fire paintballs to fire paintballs. The firing of paintballs can be with firing individual paintballs, a burst of about three paintballs successive paintballs rapid fire as paintballs are sprayed in a general area of an opponent. The kit converts an airsoft gun to fire paintballs to handle feeding either airsoft projectiles or paintball projectiles depending upon the installed kit. The kit allows for a user to purchase a single reliable gun that can be used for either activity and then install or remove a fit that allows the gun to be used in either of the two activities. The conversion requires little or no tools and can be performed in the field as the user prepares for their next combat.

Abstract: An apparatus for absorbing energy from the release of an archery bow. The apparatus of the present invention provides an elongated support structure releasably connectable to a vibration reduction insert. The vibration reduction insert has a substantially cylindrical shape and at least one substantially C-shaped recess along an outer edge of the vibration reduction insert. A releasable fastener is connected to one end of the support structure, and the fastener is releasably connectable to the archery bow such that the support structure is extendible in a cantilevered position relative to the archery bow. The vibration reduction insert may be made from a vibration reduction material. Along an edge of the C-shaped recess, the vibration reduction insert may have a U-shaped recess that extends toward the radial center of the vibration reduction insert. There may be two substantially C-shaped recesses that are substantially coaxially aligned.

Abstract: A receiver for a firearm is provided with anchoring structures for mounting an accessory part having complimentary anchoring structures. At least one anchoring structure on the receiver comprises a through hole and a complimentary through hole on the accessory part such that when it is mounted on the receiver the through holes are aligned such that a fastening pin can be inserted. At least one anchoring structure comprises a portion of the lower edge of the receiver that engages a complimentary anchoring structure on the accessory part. At least one anchoring structure comprises a first projection and an adjacent first indentation at the upper, rear portion of the receiver with said first indentation being further away from the through hole than said first projection. A complimentary anchoring structure on the accessory part attaches in the manner of a snap mechanism.

Abstract: A paintball marker adapter kit that enables a paintball marker with a .68 caliber barrel to use .50 caliber paintballs. In one embodiment, the kit includes a hollow barrel tube, a replacement power tube, a replacement linkage arm, and optional feed ball adapters that into the marker's existing ammo feed hopper or a replacement ammo feed hopper. The barrel tube includes a rear bolt section that extends longitudinally from the proximal end of the barrel. The marker's existing front bolt, power tube and linkage arm are removed and replaced by the replacement power tube and replacement linkage arm. The barrel tube is hollow with a center bore configured to receive a .50 caliber paintball and receive the front air tube on the power tube. The barrel tube also includes a ball hole configured for a .50 caliber paintball that drops vertically from the ammo feed elbow and a blocking pin and latch hole. The kit may include a velocity limiting device that fits into the power tube.

Abstract: A ballistic adjustment device installed in a rear end of a gun barrel of a toy gun for adjustment of the ballistic range is disclosed to include a barrel bullet attached to the rear end of the gun barrel and having two inside protruding portions for holding a bullet in balance in the rear end of the gun barrel for firing, a positioning member press-fitted onto the bullet barrel and fastened to the rear end of the gun barrel, a pressure member fastened to the gun barrel and having a spring arm partially and downwardly projecting through an opening on the positioning member into tangent contact with the bullet to be fired, and a rotary control member rotatable to adjust the pressure between the spring arm and the bullet to be fired.

Abstract: An improved barrel system for gas powered guns that improves the performance of the guns, by employing adjustable inserts in slots in the barrel to provide an effective barrel diameter less than the bore diameter. The barrel system may optionally include barrel liners, inserts and spin-control components.

Abstract: The plural option loading system for a pneumatic gun. The pneumatic gun has a receiver with the first and second loading port disposed to permit loading either by gravity or forced loading such as from a magazine. The barrel can be locked to the receiver to permit loading through only one of the two ports depending on the orientation in which it is locked to the receiver and permits selective loading through only a selected port at any time.

Abstract: A paintball marker for firing a projectile includes a main body. The main body includes a breech and a feed port connected and a feed tube connected thereto. The main body is originally configured for launching a projectile having a first size. The invention includes a conversion kit to enable a marker to launch projectiles that are smaller than what can be originally launched. A breech insert is positioned within the breech, a feed insert is positioned within the feed port and a replacement barrel, with a smaller diameter bore, are provided to reduce the size of the all conduits within the marker for launching a projectile having a second size that smaller than the first size. The feed insert directly engages the breech adapter to prevent the movement of the breech adapter. Also, connection of the barrel secures the breech insert in place.

Abstract: A paintball marker for firing a projectile includes a main body. The main body includes a breech and a feed port connected and a feed tube connected thereto. The main body is originally configured for launching a projectile having a first size. The invention includes a conversion kit to enable a marker to launch projectiles that are smaller than what can be originally launched. A breech insert is positioned within the breech, a feed insert is positioned within the feed port and a replacement barrel, with a smaller diameter bore, are provided to reduce the size of the all conduits within the marker for launching a projectile having a second size that smaller than the first size. The feed insert directly engages the breech adapter to prevent the movement of the breech adapter. Also, connection of the barrel secures the breech insert in place.

Abstract: A barrel for prohibiting the paintball from dropping therefrom is provided by the present invention. The barrel includes a main body and an elastic ring. In which, a rear end of the main body is formed with a combining portion to combine with a paintball gun, and an extension is extended rearward from the combining portion. A bore penetrates through the main body, the combining portion and the extension. Around an outer periphery of the extension is disposed an annular groove, and at least one slot is formed in the annular groove, while the slot communicating the bore proximate to the extension. In addition, the elastic ring has a smaller perimeter than that of the annular groove. The elastic ring is disposed in the annular groove, and a part of the elastic ring sinks into the slot, overlapping a part of the bore.

Abstract: A paintball marker for firing a projectile includes a main body. The main body includes a breech and a feed port connected and a feed tube connected thereto. The main body is originally configured for launching a projectile having a first size. The invention includes a conversion kit to enable a marker to launch projectiles that are smaller than what can be originally launched. A breech insert is positioned within the breech, a feed insert is positioned within the feed port and a replacement barrel, with a smaller diameter bore, are provided to reduce the size of the all conduits within the marker for launching a projectile having a second size that smaller than the first size. The feed insert directly engages the breech adapter to prevent the movement of the breech adapter. Also, connection of the barrel secures the breech insert in place.

Abstract: A barrel assembly for a pneumatic paintball gun includes a barrel body and a barrel insert. The barrel body has a breech end, a muzzle end, and a barrel bore extending longitudinally through the barrel body from the breech end to the muzzle end. The barrel insert has a breech end, a distal end, and an insert bore, and is configured to be removably housed within a breech portion of the bore of the barrel body. The breech end of the barrel body is configured to attach to a breech end of the paintball gun. The barrel insert collaborates with the barrel body to provide a firing bore for the barrel assembly which guides a paintball fired from the breech end of the gun through the barrel and out the muzzle end of the barrel body. The barrel insert can be constructed having a thin, flexible wall so as to permit lateral deformation of the barrel insert.

Abstract: This apparatus is a variable bore paintball barrel connector system. with a one-piece connector unit that joins the paintball marker with any mating barrel, regardless of manufacturer, at least one removable cylindrical compression sleeve that is inserted into the one-piece connector to provide the chosen compression to the paintball, thereby creating an optional compression zone, acting as an independent device that is not an incorporated component of any barrel nor marker unit, it allows for quick and easy transitions between the use of compression or no compression, and the compression sleeve has a raised lip on one edge that holds it in place and prevents it from slipping through the connector device.

Abstract: The present invention comprises a pneumatic paintball marker for use with an adaptor, the pneumatic paintball marker comprising a marker body which has a back portion and a front portion. The back portion is adapted to receive a paintball and the front portion is adapted to detachably connect with a barrel to discharge a paintball through the barrel. The barrel comprising a hollow elongated cylindrical tube, which comprises an interior diameter, a breech end and a connection means at the breech end and adapted for connection with the front portion of the marker and a paintball discharge muzzle end.

Abstract: A barrel assembly for a pneumatic paintball gun includes a barrel body and a barrel insert. The barrel body has a breech end, a muzzle end, and a barrel bore extending longitudinally through the barrel body from the breech end to the muzzle end. The barrel insert has a breech end, a distal end, and an insert bore, and is configured to be removably housed within a breech portion of the bore of the barrel body. The breech end of the barrel body is configured to attach to a breech end of the paintball gun. The barrel insert collaborates with the barrel body to provide a firing bore for the barrel assembly which guides a paintball fired from the breech end of the gun through the barrel and out the muzzle end of the barrel body. The barrel insert can be constructed having a thin, flexible wall so as to permit lateral deformation of the barrel insert.

Abstract: A barrel assembly for a pneumatic paintball gun includes a barrel body and a barrel insert. The barrel body has a breech end, a muzzle end, and a barrel bore extending longitudinally through the barrel body from the breech end to the muzzle end. The barrel insert has a breech end, a distal end, and an insert bore, and is configured to be removably housed within a breech portion of the bore of the barrel body. The breech end of the barrel body is configured to attach to a breech end of the paintball gun. The barrel insert collaborates with the barrel body to provide a firing bore for the barrel assembly which guides a paintball fired from the breech end of the gun through the barrel and out the muzzle end of the barrel body. The barrel insert can be constructed having a thin, flexible wall so as to permit lateral deformation of the barrel insert.

Abstract: A barrel assembly for a pneumatic paintball gun includes a barrel body and a barrel insert. The barrel body has a breech end, a muzzle end, and a barrel bore extending longitudinally through the barrel body from the breech end to the muzzle end. The barrel insert has a breech end, a distal end, and an insert bore, and is configured to be removably housed within a breech portion of the bore of the barrel body. The breech end of the barrel body is configured to attach to a breech end of the paintball gun. The barrel insert collaborates with the barrel body to provide a firing bore for the barrel assembly which guides a paintball fired from the breech end of the gun through the barrel and out the muzzle end of the barrel body. The barrel insert can be constructed having a thin, flexible wall so as to permit lateral deformation of the barrel insert.

Abstract: A combination including a paint ball gun with a gun barrel has both a muzzle portion and at least two interchangeable compression zone portions of slightly differing diameters. The compression zone portions are preferably attachable and deattachable from the muzzle portion by a non-threaded connection mechanism, such as by a snap-on type connection mechanism, a cam-lock type connection mechanism or a bayonet connection mechanism. The invention allows the user of a paint ball gun to select a compression zone portion which is most optimally matched to the diameter of the paint ball ammunition to be used in the paint ball gun. The invention thereby optimizes paint ball gun performance.

Abstract: A combination including a paint ball gun with a gun barrel has both a muzzle portion and at least two interchangeable compression zone portions of slightly differing diameters. The compression zone portions are preferably attachable and deattachable from the muzzle portion by a non-threaded connection mechanism, such as by a snap-on type connection mechanism, a cam-lock type connection mechanism or a bayonet connection mechanism. The invention allows the user of a paint ball gun to select a compression zone portion which is most optimally matched to the diameter of the paint ball ammunition to be used in the paint ball gun. The invention thereby optimizes paint ball gun performance.

Abstract: The present invention includes a device for increasing distance traversed by a projectile. The device includes a main body comprising a tubular component wherein the tubular component defines an orifice. The main body also comprises a collar component positionable about the tubular component. The collar component enclosed a second orifice for receipt of a screw. A tab is positioned adjacent to the orifice which is defined by the tubular component. The tab includes an oblique section. A screw is positionable in the collar component and extends through the orifice defined by the tubular component. The screw is in moveable contact with the oblique segment of the tab.

Abstract: A new Multi-Directional Ball Throwing System for propelling a ball in three selective directions at various velocities without the user discontinuing play. The inventive device includes a housing, a plurality of storage tubes secured to said housing which store a plurality of balls, a propelling means connected to the storage tubes, and a corresponding plurality of delivery tubes with an arcuate lumen which are rotatably secured to the housing and connected to the propelling means opposite of the storage tubes.

Abstract: There is disclosed a projectile launcher with a firing mechanism that can be either hand-held or secured to a body plate. When secured to a body plate, the firing mechanism is attached to a conduit that has on its distal end, a secondary launch tube that can be hand-held or secured to head gear worn by the user and aimed with sights mounted on the head gear.

Abstract: There is disclosed a wrist-mounted projectile launcher having pivoting launch tubes and a handle that remain in inoperative and convenient positions until it is desired to launch projectiles. The launch tubes and handle are spring-loaded and moved to operative positions simply by pushing a button. A selector valve mechanism can be used to select which of the tubes will launch a projectile.

Abstract: The toy gun disclosed includes a trigger mechanism for launching projectiles from a flexible tail or other appendage. The tail bends and compressed gas is released in response to pulling the trigger to its full extent so that the projectile is launched when the flexible tail is bent.

Abstract: The invention provides a toy dart having a elongate body which comprises a front end in the form of a suction cup, an intermediate portion and a tubular rear end which is hollow and of an enlarged cross-section and preferably also a heavier weight. The invention also provides a toy gun for launching this toy dart, which comprises a body and an air pressurising mechanism provided by a piston and a cylinder inside the body for launching the toy dart. The cylinder has a tubular opening end over and around which the hollow rear end of the toy dart is to be fitted for launching. More specifically, the tubular end is provided by a tube which is removable to reveal another opening of the cylinder for the insertion of a conventional suction-cup toy dart having a plain shaft to be hit at a rear end by the piston.

Abstract: This invention relates to an automatic ball control apparatus readily connectable to a ball ejector barrel on a ball ejector machine to impart top spin to ejected tennis ball members. The automatic ball control apparatus includes a ball top spin actuator assembly in one embodiment which includes 1) a fixed extension sleeve assembly secured to an outer end of the ball ejector barrel; 2) a sliding actuator sleeve assembly mounted about the fixed extension sleeve assembly; and 3) a spin actuator paddle assembly pivotally connected to the sliding actuator sleeve assembly. The spin actuator paddle assembly includes a main support lever member which is periodically pivotable to contact and impart top spin motion to a contacting tennis ball member. A second embodiment includes a ball top spin actuator assembly including 1) a fixed extension sleeve assembly secured to an outer end of the ball ejector barrel; and 2) a spin actuator paddle assembly connected to the fixed extension sleeve assembly.

Abstract: Apparatus is provided to shoot both arrows and slugs. A crossbow has a longitudinal groove for guiding a feather of an arrow being shot by the crossbow. An attachment may be added to the crossbow to enable the crossbow to shoot slugs. When the attachment is used two longitudinal grooves cooperate to form a bore to guide the slugs.

Abstract: An improved missile-launching weapon for launching either an arrow-type missile, a slug-type missile, or a plurality of shot-type pellets is provided. The weapon includes springs mounted in cooperation with pivotally mounted lever arms such that the lever arms can be moved to place the springs in and out of a loaded condition. The weapon also includes a removable guide that can be interchanged with a modified guide to allow the various types of missiles to be fired. A drive member is slidably mounted on the guide and is propelled by a cable extending between the springs. A trigger mechanism is mounted substantially near the center of gravity of the weapon to releasably latch the slide member in a cocked position. The trigger mechanism provides a proper amount of "feel" to the operator to allow the weapon to be fired accurately.

Abstract: A gun is provided which is capable of firing a variety of projectiles driven by a variety of propellants. The barrel may be readily disconnected from the stock of the gun. The breech is designed to receive a standard gauge shotgun shell. Inserts are also provided with the same general configuration of a standard gauge shotgun shell, and when placed into the breech, allow the gun to fire a variety of projectiles. Inserts are provided which allow the gun to fire both center fire and rim fire rounds through a bore in the insert. A rocket insert is also provided which contains a smooth bore and is capable of firing rockets. An inertial firing pin is provided, which operates in conjunction with a floating breech plate. The floating breech plate is used in the firing of compressed gas bottles. A dual action spring drive is provided which is used to provide the necessary force to drive the firing pin and which also absorbs a portion of the recoil.

Abstract: An improved compressed gas ball propelling machine having various barrel extensions each of which include a second breech and ball feeding mechanism so that the machine can be used to throw balls of various diameters. The breech and ball feeding mechanisms of each of the barrel extensions can be removably fastened to the original breech mechanism of the ball propelling machine in such a way as to be operatively connected thereto so the machine can propel balls of a diameter for which the machine was originally intended or balls of different diameters.