Mechanical Projectile Feed Patents (Class 124/51.1)
  • Publication number: 20080053422
    Abstract: A range of High Capacity Paintball Pod Hopper or Loader housings for use with a conventional paintball gun with attached paintball feeder core egg housing. The said Pod Hopper housing has an enclosed end and an open end in contact with the paintball feeder core egg housing and facilitates for gravity feed transfer of paintballs to the paintball gun firing chamber. The said Pod Loader housing has an enclosed end and an open end in contact with the paintball feeder egg housing and facilitates power transfer of paintballs to the paintball gun firing chamber. The said Pod Hopper and Pod Loader housings includes the means for connecting the said housings to paintball feeder egg housings by means of a quick connector such as bayonet fittings, and also using one of glued, mechanical fastener. A plurality of the said hoppers and loaders can be arranged to be connected to at least one of the front proximal end and the rear distal end of the paintball feeder egg housing.
    Type: Application
    Filed: May 16, 2007
    Publication date: March 6, 2008
    Inventor: Evan A. Estrate
  • Publication number: 20080047537
    Abstract: A pneumatic drive for an active paintball loader capable of supplying paintballs to a paintball marker at a sufficiently high rate that is coordinated with firing the marker using compressed gas to a provide the motive power.
    Type: Application
    Filed: August 25, 2006
    Publication date: February 28, 2008
    Inventors: Donald Lee Kulp, Robert E. Long, Donald A. McLean
  • Publication number: 20080047536
    Abstract: A feeding device of a paintball marker gun includes a signal transmitter, a signal receiver, and a paintball feeding unit containing paintballs; the signal transmitter is electrically connected to a controller held in the pistol grip; the paintball feeding unit is connected to the signal receiver, and it includes a stepping motor; when the trigger of the paintball marker gun is pressed to shoot a paintball, the signal transmitter will transmit a signal immediately, which will be received through the signal receiver such that the stepping motor of the paintball feeding unit will start rotating so as to feed a paintball to a main body of the paintball marker gun, thus making shooting and feeding of paintballs happen in a synchronized manner as well as preventing blockage and jams of paintballs.
    Type: Application
    Filed: December 1, 2005
    Publication date: February 28, 2008
    Inventor: Jian-Ming Chen
  • Patent number: 7322348
    Abstract: An electric paintball feed hopper for paintguns, characterized in having a hopper opening, which provides for loading paintballs, defined in a hopper, a fastening cover, which prevents the paintballs from falling out, is fitted to the hopper opening, and an oblique partition, which provides for sequencing of the paintballs, is further configured on an inner side of the fastening cover. Moreover, a motor-driven paintball feed mechanism and a guide mechanism, which provides for successively feeding the paintballs, are configured at a lower end of the oblique partition. After a round of paintballs is loaded into the hopper, the paintball feed mechanism and the guide mechanism enable sequencing of the paintballs loaded within the hopper and successive shifting into a barrel of a paintgun, thereby achieving uninterrupted shooting and providing an effect that closely simulates the firing of a real gun.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: January 29, 2008
    Assignee: Speed Paintball Co., Ltd.
    Inventor: I-Chun Chen
  • Patent number: 7322347
    Abstract: Each one of a set of substitutable paintball magazines of different capacities can be quickly mounted on a universal coupling base plugged into the projectile feeding port of a paintball marker. The coupling base incorporates a motor whose shaft connects to a paintball agitator within the magazine. The set of magazines offers a convenient selection of loading capacities to accommodate a variety of game circumstances and environments.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: January 29, 2008
    Assignee: JT USA, LLC
    Inventor: Lester V. Broersma
  • Publication number: 20080017178
    Abstract: Systems and methods are provided for an easy-to-open paintball loader housing. A housing is provided with a chamber for storing a paintball feeding system and a chamber for storing a supply of paintballs. The housing is separable such that the portion storing the supply of paintballs may be reached by a user's hand for cleaning.
    Type: Application
    Filed: July 24, 2006
    Publication date: January 24, 2008
    Inventors: John Marques, Christopher V. Corcino, Gary Shows
  • Patent number: 7275530
    Abstract: A removable air bleed assembly for use with between a paintball gun and an auxiliary system includes a pin having an elongated pin channel extending through a majority of the pin to bleed pressurized air from the paintball gun. An air conduit is coupled between and in fluid communication with the removable pin and an auxiliary assembly to facilitate passage of the pressurized air from the paintball gun to the auxiliary assembly. The removable pin can be manually removed from the paintball gun without the need for any tools. The auxiliary system can be at least one of an agitator system and an uploader system, as an example.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: October 2, 2007
    Inventor: Bernard A. Deak
  • Patent number: 7270121
    Abstract: This invention is directed toward a device and method of providing a substantial quantity of paintballs to a paintball gun in a manner which minimizes the target silhouette of the user and allows him/her to supply the paintball gun with relative ease, safety, and efficiency in that he/she does not have to reach for paintball pods to refill his/her marker. A force-feed mechanism removes paintballs from the backpack hopper and feeds them into the marker, while a ratcheting ceiling communicates with a sensor and brings the ceiling of the backpack hopper down on the remaining paintballs as more are fired to ensure that there is a constant pressure feeding the remaining paintballs into the force feed mechanism. The invention also optionally provides for an air canister located in the backpack hopper which even further lowers the player's profile as a target and protects the canister from damage.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: September 18, 2007
    Inventor: Curtis Robert Lubben
  • Patent number: 7270120
    Abstract: Each of a set of substitutable paintball magazines quickly attaches to a coupling feeder mounted on the ammunition intake port of a paintball marker, replacing the traditional hopper and sets of paintball cartridges. The coupling feeder includes a motor-driven paintball feeding mechanism.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: September 18, 2007
    Inventors: Lester V. Broersma, Joseph Landry
  • Patent number: 7252080
    Abstract: A paintball gun loading device includes a gun body, a loading member and a funnel. The loading member comprises a fixture at an upper portion thereof. The fixture comprises a circular trough with a plurality of slots along the circular trough. A clamp sleeved on the circular trough is tightened with a quick-release rod and a nut to fasten the funnel in a different size.
    Type: Grant
    Filed: January 5, 2005
    Date of Patent: August 7, 2007
    Assignee: Sunworld Industrial Co., Ltd.
    Inventor: Ken-chin Yeh
  • Publication number: 20070175464
    Abstract: The invention relates to pneumatic weapon, in particular, to feeding mechanism for ball bullets from the bin to a holder. A feeding mechanism for ball bullets from the bin to a holder contains a bin 1 provided with additional reservoir 2 which in the lower part are formed communicating therebetween. A vibrator 3 is placed in the lower part of the bin 1 and the additional reservoir 2. The vibrator 3 is formed of two plates 4 and 5 in form of a letter ā€œLā€ detail oscillating on the axis 6 due to spring 7 and cam 8, rotated by the electric drive 9. A feeding screw mechanism is disposed in the lower parts of the bin 1 and the additional reservoir 2, the mechanism comprising a screw 10 which spiral is executed as a helical spring. The base 12 is connected to cam 8 through a friction coupling 13. The cam 8 gains rotation from the electric drive 9 through the gearing 14. The bin 1 with additional reservoir 2 communicates with the holder 16 through the channel 15.
    Type: Application
    Filed: September 6, 2006
    Publication date: August 2, 2007
    Inventor: Valery Leonidovich Cherepanov
  • Patent number: 7234456
    Abstract: The invention relates to a device for feeding projectile balls into the ball chamber of a handgun, especially into the ball chamber of a paintball gun, having a ball container with an outlet port, a feeder tube between the outlet port and the ball chamber, and an essentially cylindrical feeder with an axis for feeding the balls from the ball container to the feeder tube. The device comprises a flexible element that is disposed inside the ball container adjacent to the outlet port. A first end of the flexible element is fixed to the ball container and the flexible element is essentially rigid in the direction of the axis. Balls that are not in the correct position when approaching the outlet port are deflected back into the ball container, instead of hitting the edge of the outlet port. This way, jamming of the balls and explosion by excessive pressure are prevented.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: June 26, 2007
    Assignee: KEE Action Sports
    Inventor: Heddies Andresen
  • Patent number: 7222617
    Abstract: The invention relates to a device for feeding ball-like ammunition, so-called paint balls, into the projectile chamber of a sporting arm. The magazine is arranged separately from the arm and is connected to same by means of a feeder tube. A motor-driven feeder feeds the balls from the ball container into the feeder tube. In so doing, a spring element stores the traction from the motor, so that, even when the motor stops, balls can still be transported using the energy stored in the spring element. The traction from the motor is transmitted via a connection or clutch consisting of a spring element and a transmission element. Protrusions are arranged on both the spring element and the transmission element, which come to bear on each other for transmitting traction. The protrusions are at least partially flexible, so that the transmitted force is limited. This way, explosion of the balls from excessive pressure is prevented.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: May 29, 2007
    Assignee: AJ Acquisition I LLC
    Inventor: Heddies Andresen
  • Patent number: 7137910
    Abstract: A practice machine for receiving a thrown ball and returning it to a user is generally provided with a backstop for stopping the thrown ball, a pan disposed below the backstop for collecting the ball, a ball return adjacent the backstop for expelling the ball, and a trough disposed between the pan and the ball return for feeding the ball from the pan to the ball return. The ball return can adjust between ball sizes and vary the trajectory of expelled balls. Moreover, the ball return can be equipped with safety features including a proximity sensor, audible alerts, speed adjustment and tamper resistant controls. Further, the ball return can alternate between a MANUAL mode and an AUTOMATIC mode. The backstop of the practice machine can be collapsible to permit convenient storage and ease of transportation.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: November 21, 2006
    Assignee: Grand Slam Sports, LLC
    Inventors: James A. Ktson, Frederick M. Allor
  • Patent number: 7111620
    Abstract: The present invention provides a ball engagement device for use with a ball launching device, comprising a housing having first and second ends, an opening for accepting balls and a ball chamber adjacent to the opening. The device further includes a motor coupled to the housing and a pinion connected to and driven by the motor. The pinion drives a rack that has a ball engagement end, wherein the rack is slideably disposed along an interior portion of the housing. The device also includes a first switch disposed in the housing and that is operably configured to activate the motor to rotate the pinion in a first direction, the first switch is activatable by the presence of a ball in the ball chamber, a second switch disposed in the housing operably configured to rotate the pinion in an opposing second direction, a third switch disposed in the housing at a predetermined distance from the second switch and operably configured to deactivate the motor and a switch activation member disposed along the rack.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: September 26, 2006
    Inventors: Steven S. Johndreau, David E. Johndreau
  • Patent number: 7051900
    Abstract: The gas operated particle feed apparatus may feed particles to an outlet port. There may be a fixed member having a bottom with a particle aperture centrally disposed therein, an annular wall upstanding from the bottom and a plurality of gas apertures. The fixed member may be attached to a base member that may have a central outlet port. A particle outlet element with a constriction aperture may be disposed between the fixed member and the base member. A rotating member with a disk, an agitator, a feed aperture, and a radial disk groove with a ball therein may be disposed in the fixed member and restrained transversally by the wall. Groove apertures may be formed in the disk. A top member may be disposed on the fixed member and may have a central opening. The agitator may protrude through the central opening.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: May 30, 2006
    Inventor: Timothy A. Reeves
  • Patent number: 7021302
    Abstract: An impeller for an active-feed paintball loader has resilient arms that engage paintballs in the lower portion (well) of the loader and advance them to and through the outfeed tube. The resilient arms are sufficiently stiff to move unobstructed paintballs located between the arms, and sufficiently flexible to yield when forced against stationary paintballs so as not to rupture the paintball shells, the arms substantially returning to their original shape when the obstruction is removed. Accordingly, when the motor is shut off, the arms will simply flex backward as they encounter stationary paintballs. Should a paintball jam occur in the vicinity of the impeller, the arm(s) can flex around the jammed ball without breaking it, and help to dislodge it so as to clear the jam.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: April 4, 2006
    Assignee: Brass Eagle LLC
    Inventors: Terry Neumaster, Bruce Crites, Michael Jezdimir
  • Patent number: 7017569
    Abstract: A loader apparatus for use with a paintball marker having a paintball inlet is provided. The loader apparatus includes a base attachable to the paintball marker, a cartridge removably attachable to the base, a motive means and a delivery conduit. The cartridge includes a chamber for paintballs. The chamber has a paintball outlet. The cartridge further includes a flow assistor. The motive means is operatively connected to the flow assistor when the cartridge is attached to the base. The delivery conduit is in flow communication with the paintball outlet of the chamber and with the paintball inlet of the paintball marker when the cartridge is attached to the base and the base is mounted to the paintball marker.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: March 28, 2006
    Inventor: Paul Garfield Jong
  • Patent number: 6981493
    Abstract: A paintball backpack includes a housing including a plurality of isolated compartments having open top end portions. The compartments include a plurality of releasable flap portions connected adjacent the top end portions. The housing further has a lower cavity provided with an outlet positioned substantially medially thereof. The lower cavity is disposed subjacent the compartments and has a bottom surface sloping downwardly and inwardly towards the outlet. The backpack further includes a harness including a plurality of shoulder portions adjacent the flap portions of the housing and extending about a user's torso and a belt section integral therewith. The backpack further includes a mechanism for selectively moving paintballs from the top end portions to the lower cavity and a mechanism for dispensing paintballs outwardly and away from the lower cavity wherein the paintballs are projected from the housing at a predetermined velocity.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: January 3, 2006
    Inventor: Charles J. Poteracke
  • Patent number: 6978776
    Abstract: A loader stores and loads round objects is presented. The loader includes a screw and a drive tube. The screw has a helical groove. The helical groove winds in a first direction. The drive tube has multiple helical grooves on an inner surface of the drive tube. The multiple helical grooves wind in a second direction. The second direction is counter to the first direction. The screw is located within a center of the drive tube along a length of the drive tube so that round objects loaded within the drive tube are each within the helical groove of the screw and within one of the multiple helical grooves on the inner surface of the drive tube. When the drive tube rotates with respect to the screw, round objects within the drive tube are constrained to travel along the helical groove of the screw and along one of the multiple helical grooves on the inner surface of the drive tube.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: December 27, 2005
    Assignee: Ancient Innovations Corp.
    Inventor: Jared L. Hamilton
  • Patent number: 6974396
    Abstract: A batting aid is described. The batting aid includes a height-adjustable stand having top and bottom portions. A hollow tube having first and second ends is attached to the top portion of the stand. A mechanism is attached to the second end of the tube, and is adjustable to modify the exit angle of a ball placed in the device.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: December 13, 2005
    Assignee: Quickswing, Inc.
    Inventors: Donald Mauer, Gregory Knutson, James Mauer
  • Patent number: 6957645
    Abstract: A play enhancement system for a pneumatic projectile launcher. The play enhancement system includes a first power source and second power source for selective connection to a circuit board in a projectile hopper for the projectile launcher. At least one of the first and second power sources comprises a rechargeable power source. A switching device is connected to the first and second power sources, and to the circuit board for selectively connecting the first power source or second power source between a power source recharger and the circuit board. Continued play is provided by switching between the first and second power supplies when a predetermined low voltage is reached.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: October 25, 2005
    Inventor: Johnathan David Cross
  • Patent number: 6915792
    Abstract: The invention relates to a paintgun having a barrel assembly with a barrel and a firing mechanism for paintballs; a trigger assembly connected with the barrel assembly for actuating the firing mechanism; and a revolving disc for feeding paintballs interposed between the barrel and the firing mechanism; a series of uniformly spaced paintball holes being formed at the rim of the revolving disc that is rotatable by a driving apparatus to bring the paintballs within the paintball holes to a discharge area coaxial to the barrel for discharging the paintballs; and a paintball adjacent to the revolving disc and the firing mechanism within the barrel assembly being provided for storing the paintballs disposed. Meanwhile, the paintball container includes a guiding slope for directing the paintballs into the paintball holes. The revolving disc with the paintballs is rotatable one after another to the discharge area.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: July 12, 2005
    Inventor: Chih-Sheng Sheng
  • Patent number: 6889680
    Abstract: The present invention is directed to a ball feed mechanism for use in a paintball loader. The ball feed mechanism includes a feeder which conveys or impels balls toward a feed neck, and a drive member which is concentric with the impeller. The feeder is coupled to the drive member through a spring. The spring is configured to store potential energy which is used to rotate the feeder and, thus, drive the balls toward the feed neck. An electric motor is used to rotate the drive member to wind the spring. The feed mechanism includes sensors which detect the motion of the feeder and the drive member. A controller determines the spring tension based on the relative motion of the feeder and drive member, and actuates a motor when necessary.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: May 10, 2005
    Assignee: National Paintball Supply, Inc.
    Inventors: James T. Christopher, Chris T. Goddard, David Michael Banks
  • Patent number: 6860258
    Abstract: A paintball gun loader. The loader is used in a closed-bolt paintball gun. The loader provides a paintball contact surface that moves in oscillating fashion in response to movement of the bolt to load individual paintballs into the gun while the gun loading port is open, which occurs as the gun cycles when fired. The loader includes a spring element that limits the force exerted on the paintball being loaded, even in case of a jam when the paintball contact surface is urged toward the paintball. In one embodiment, a pivotally mounted flexible lever arm having a paintball contact surface oscillates through an angular range of motion in response to a cam surface of the bolt engaging a cam follower on the the loader. In such embodiment, the cam follower is urged toward the cam surface of the bolt, which in turn biases the paintball contact surface toward an open, paintball receiving position.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: March 1, 2005
    Inventor: Kenneth R. Farrell
  • Patent number: 6772745
    Abstract: A compact ball launching activity device has an upper and lower member. The upper member having multiple funnel shaped openings that are positioned on the sides of the upper member. The upper member also has one funnel shaped opening positioned at the top of the upper member. The device includes a launch system having an angled feeder tray and flywheel. The balls enter the side funnels of the upper member and are collected on the angled feeder tray. The balls fall through a hole in the feeder tray to a launch channel. The flywheel propels the balls through the launch channel, up and out of the funnel positioned at the top of the ball launching activity device.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: August 10, 2004
    Assignee: The Little Tikes Company
    Inventors: Peter Colin McEachen, Michael Miroewski, Stewart Lenox, Bryan Keller
  • Patent number: 6739323
    Abstract: A paint ball gun is provided. The paint ball gun has a paint ball feed mechanism which comprises an actuator, a paint ball advance assembly, a bias member, and a paint ball feed assembly. The actuator is configured to advance such that the paint ball advance assembly, coupled to the actuator, moves in response to movement by the actuator. The paint ball feed assembly is coupled to the paint ball advance assembly moving therewith and engaging a paint ball to feed the same into the paint ball gun.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: May 25, 2004
    Assignee: Tippmann Pneumatics, Inc.
    Inventor: Dennis J. Tippmann, Jr.
  • Patent number: 6736125
    Abstract: A magazine for a bullet-shooting pneumatic firearm comprises a casing 1. Inside the casing 1 a closed passage 2 is provided, equipped with containers 3 with bullets 5. The magazine has a bullet opening 11 in a wall 9 of the casing 1, through which the bullet 5 during the shot, under the action of a portion of gas, gets from the container 3 into a bullet passage 12 of a barrel 10 of the firearm. The opening 11 is disposed coaxially with the bullet passage 12 of the barrel 10 of the firearm and with a through opening 4 of the container 3 occupying such position before each shot. In the wall 9 of the casing 1 above the closed passage 2 above the through opening 4 of the containers 3 a port 14 is provided for receiving an external arm 15 of a striker-and-trigger mechanism 16, under the action of which the containers 3 move along the closed passage 2, each container 3 being positioned sequentially to the shooting line.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: May 18, 2004
    Assignee: Zakrytoe aktsionernoe obshchestvo Gruop ā€œANICSā€
    Inventors: Aleksei Lvovich Petrosyan, Aleksei Borisovich Shipachev
  • Patent number: 6725852
    Abstract: An ammunition magazine for dispensing uniformly-sized spherical projectiles such as paintballs into a gun adapted to shoot said projectiles has a generally oblong, closed container having a channel defined in its bottom from a distal axial end to an outlet port located in a lowermost, median portion of the container. The proximal portion of the container floor defines a slanted platform which extends above and beyond the outer port so that projectiles are urged by the platform toward the distal end of the channel from where they roll under the platform and into the outlet port. A helicoidal stirring arm projects from a distal area of the platform obliquely over the exposed part of the channel. The steering arm is driven by an electrical motor controlled by a switch conveniently mounted on the side of the magazine. The arm spins in a ball-uplifting direction to break any jamming of the balls above the channel.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: April 27, 2004
    Assignee: JT USA, Inc.
    Inventors: Michael J. Yokota, Joseph A. Landry, Lester Broersma
  • Patent number: 6637422
    Abstract: A ball launching apparatus configured to launch balls to a user. The ball launching apparatus is configured such that a user may change an angle of trajectory T of launched balls by simply resting the ball launching apparatus on one of two different base portions. The ball launching apparatus is configured to receive, feed, and launch balls having different shapes, such as baseballs and footballs. A ball feed mechanism of the ball launching apparatus is driven by ball propulsion mechanism of the ball launching apparatus.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: October 28, 2003
    Assignee: Mattel, Inc.
    Inventors: Mark Wojtkiewicz, Ross Rumfola, III, Kevin R. Shinn, Dave Moomaw
  • Patent number: 6609511
    Abstract: The present invention provides jam prevention systems for use with a paintball gun having a hollow infeed portion for receiving paintballs to be fired by the gun. The jam free feeder system generally includes a housing, a feed tube, a jam free feeder system, a sensor and a controller. The housing stores a quantity of paintballs. The feed tube is connected to the hollow infeed portion of the housing. The connected feed tube forms a paintball feed passageway for receiving and holding a stack of paintballs and sequentially delivering the paintballs to the paintball gun. A jam free feeder is provided, which is selectively operable to prevent jamming of paintballs in the housing. The sensor senses the firing of the paintball gun and a controller operates the jam free feeder in response to the firing of the paintball gun. Embodiments where the jam free feeder system is a hopper feeder system or a conveyor system are also provided.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: August 26, 2003
    Assignee: Airgun Designs, Inc.
    Inventors: Thomas G. Kotsiopoulos, Eric S. Gibson
  • Patent number: 6604517
    Abstract: A table tennis service machine is simple in construction and is formed of mechanical devices, such as a ball feeding device, a driving member, a deceleration gear set, and a ball ejecting device. The deceleration gear set is driven by the driving member such that the ball ejecting device is driven by the deceleration gear set in an intermittent manner, thereby resulting in a periodic ejection of the ball by the service machine.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: August 12, 2003
    Inventors: Tsung-Chih Chao, Teng-Lu Tsai, Thomas Donald Hugar
  • Patent number: 6601780
    Abstract: The present invention relates to a paintgun with pneumatic feeding and discharging process which mainly includes a pneumatic delivery mechanism. The pneumatic delivery mechanism consists of a flow-guiding body, a flow-guiding piston and a delivery tube. The flow-guiding body consists of a major air channel at the front end and a flow-guiding chamber at the rear end thereof. The flow-guiding chamber contains an input port at one side thereof which is in connection with an air pressure source and an output port at the other side thereof which communicates with a minor air channel at the wider part of the flow-guiding body. A stopper is used to control the opening and closing of the air flow channel. The flow-guiding piston is disposed within the flow-guiding chamber. The flow-guiding chamber is divided by the valve body into a front and a rear air pressure chambers with different pressure area.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: August 5, 2003
    Inventor: Chih-Sheng Sheng
  • Patent number: 6514162
    Abstract: The present invention relates to a hockey training device. In its broadest context, the present invention includes a hollow vertical housing with both a loading end and a discharge end. The intermediate extend of the housing is adapted to store a number of hockey pucks. A discharge device, such as a solenoid actuated plunger or spring urged driving bar, is employed in forcing pucks out through the discharge end of the housing. In this manner, the device can be used in driving pucks, one at a time, vertically and flat across the ice.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: February 4, 2003
    Inventor: John J. Karellas
  • Patent number: 6502567
    Abstract: A rapid feed paintball loader for use upon a conventional paintball gun. The rapid feed paintball loader includes a container for holding a plurality of paintballs. At a bottom portion of the container is a rotatable drive cone having a plurality of vertical fins. Each fin forms a gap with an adjacent fin large enough to accommodate a paintball. At the bottom of the container is an exit tube which exits from the bottom portion of the container and leads to an inlet tube of the paintball gun. A tube extension is mounted on an interior surface of the container adjacent to the sloped exit portion of the exit tube. The tube extension is mounted at a height which is above the top feed surface of the fins, and which is approximately equal to the radius of a paintball. A pivotable deflector is also mounted on an interior surface of the container adjacent the tube extension to prevent paintball jams from occurring within the interior of the container.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: January 7, 2003
    Assignee: Odyssey Paintball Products, LLC
    Inventors: James T. Christopher, Albert G. Schilling
  • Patent number: 6488019
    Abstract: A feeder for use with a paintball gun has an inlet through which paintballs enter, and an outlet through which they exit. A feed mechanism disposed inside the feeder frictionally engages the paintballs as they enter and transports them to the outlet. The feed mechanism may include rotatable disks. The space between the rotatable disks may be less than the diameter of the paintballs. At least one of the rotatable disks may include a material that flexes to accommodate a paintball. The paintball feeding system may additionally incorporate a circuit that senses when the gun is fired and controls the rate at which paintballs are fed into the paintball gun.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: December 3, 2002
    Inventor: Thomas G. Kotsiopoulos
  • Patent number: 6467473
    Abstract: The present invention provides jam free paintball feeding systems for use with a paintball gun. Such paintball feeder systems include a feeder for feeding paintballs to a paintball gun which includes a first compliant moveable component, such as a rotating disk or conveyor belt, and a second compliant or non-compliant surface, the space between said first moveable component and said second component being less than the diameter of said paintballs to be fed to the paintball gun. The first moveable component includes a flexible material that is compliant to a paintball when said paintball contacts said first moveable component, such that said paintballs are frictionally engaged between said first moveable component and said second component. Additional aspects combine jam free feeders in storage containers, such as paintball hoppers, with the paintball feeding systems. Methods of feeding paintballs to a paintball gun by use of the paintball feeders of the invention are also provided.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: October 22, 2002
    Assignee: Airgun Designs, Inc.
    Inventor: Thomas G. Kostiopoulos
  • Publication number: 20020117159
    Abstract: The present invention provides jam prevention systems for use with a paintball gun having a hollow infeed portion for receiving paintballs to be fired by the gun. The jam free feeder system generally includes a housing, a feed tube, a jam free feeder system, a sensor and a controller. The housing stores a quantity of paintballs. The feed tube is connected to the hollow infeed portion of the housing. The connected feed tube forms a paintball feed passageway for receiving and holding a stack of paintballs and sequentially delivering the paintballs to the paintball gun. A jam free feeder is provided, which is selectively operable to prevent jamming of paintballs in the housing. The sensor senses the firing of the paintball gun and a controller operates the jam free feeder in response to the firing of the paintball gun. Embodiments where the jam free feeder system is a hopper feeder system or a conveyor system are also provided.
    Type: Application
    Filed: October 19, 2001
    Publication date: August 29, 2002
    Inventors: Thomas G. Kotsiopoulos, Eric S. Gibson
  • Patent number: 6415781
    Abstract: A bulk loader apparatus for supplying paintballs to a paintball gun includes a housing for internally storing a quantity of paintballs, this housing having a bottom outlet through which stored paintballs can drop. A feed tube is connected to the housing at the bottom outlet and extends downwardly therefrom. This feed tube is connectible to the gun and capable of sequentially delivering the paintballs to the gun. An auger-like member is rotatably mounted at the bottom outlet and operable to clear a paintball feed jam or move one or more paintballs located at or near the outlet. The mechanism for controlling the operation of the moving member preferably includes a microswitch mounted in the feed tube for sensing the absence of a paintball within the feed tube. The control mechanism operates and moves the paintball moving member to clear the jam or move paintballs at the outlet when the position of the microswitch indicates the absence of a paintball.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: July 9, 2002
    Inventor: Aldo Perrone
  • Patent number: 6408837
    Abstract: An air compressed gun (10) is provided having a stock (11), a launch tube (12), a magazine (18), a manual air pump (14) and a loading tube (29). The magazine has an outer shell (25) and an indexing wheel mounted (26) mounted within the outer shell. The indexing wheel has a central hub (31), a peripheral ring (35) and an annular array of fins (32) extending between the central hub and peripheral ring which define an annular array of projectile cells (34).
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: June 25, 2002
    Assignee: Johnson Research & Development Co.
    Inventors: Lonnie G. Johnson, John T. Applewhite, Jeffrey Shane Matthews
  • Patent number: 6213110
    Abstract: A rapid feed paintball loader for use upon a conventional paintball gun. The rapid feed paintball loader includes a container for holding a plurality of paintballs. At a bottom portion of the container is a rotatable drive cone having a plurality of vertical fins. Each fin spirals outwardly from a center axis of the drive cone. In addition, each fin forms a gap with an adjacent fin large enough to accommodate a paintball. At the bottom of the container is an exit tube which exits from the bottom portion of the container and leads to an inlet tube of the paintball gun. A portion of the exit tube is sloped at an angle equivalent to the slope of a top surface of the drive cone. A catch arm is mounted on an interior surface of the container adjacent to the sloped exit portion of the exit tube. The catch arm is mounted at a height which is above the top surface of the fins, and which is approximately equal to the radius of a paintball.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: April 10, 2001
    Assignee: Odyssey Paintball Products, Inc.
    Inventors: James T. Christopher, Albert G. Schilling
  • Patent number: 5114768
    Abstract: A solid surface that is exposed to protein solutes in use, such as medical implants or capillary tubes useful in capillary zone electrophoresis, is defined by or carries a polymer. An interfacial layer is covalently bound to the polymer and functions to reduce interactions between the surface and protein solutes. The interfacial layer includes either a hydratable amphoteric phase or a plurality of halogen atoms bound in the interfacial layer through at least one heteroatom.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: May 19, 1992
    Assignee: Hewlett-Packard Company
    Inventor: Sally A. Swedberg