For Discharge Of Pressure From Removably Mounted Cartridge Patents (Class 124/74)
  • Patent number: 5927261
    Abstract: The present invention is directed towards an adjustable gas cartridge mount to be used on a paint gun that utilizes a gas cartridge to propel paint pellets from the paint gun. The adjustable gas cartridge mount includes a primary bracket which is structured to be secured to the paint gun and a cartridge engagement assembly which holds the gas cartridge in an effective orientation. Specifically, the cartridge engagement assembly includes an extension segment, which is slidingly coupled to the primary bracket and extends vertically downwards from the paint gun, and a cartridge coupling bracket structured to be coupled to both the gas cartridge and to the extension segment. The mount is structured such that the position of the extension segment may be moved in a forwards or backwards manner within the primary bracket in order to facilitate an enhanced balance between the gas cartridge and the paint gun.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: July 27, 1999
    Inventor: Peter Bofill
  • Patent number: 5913303
    Abstract: A compressed gas powered gun includes a firing system capable of achieving increased firing rates. The firing system includes a regulating system by which an air or firing chamber can be charged with compressed gas from a compressed gas source to a predetermined pressure very rapidly. The firing system also includes a trigger mechanism which enables rapid actuation of a trigger by a user.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: June 22, 1999
    Inventor: Thomas G. Kotsiopoulos
  • Patent number: 5909000
    Abstract: A shooting system providing a barrel with an open forward end and a closed rear end and a projectile containing a propellant under pressure located in the barrel. A wad in the bore has a forward holding member allowing the rearward portion of the projectile to be moved rearwardly in the bore and be longitudinally slidably frictionally fitted in the holding member while the holding member is in sealing engagement circumferentially of and between the barrel and the projectile whereby the projectile is in a loaded state. The holding member also allows the projectile to move forwardly out of the holding member in the firing state. The wad also has a rearward sealing portion in circumferential sealing engagement with the barrel and radially spaced from the rearward portion of the projectile whereby the closed rearward end of the bore, the sealing member, and the projectile form a firing chamber.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: June 1, 1999
    Inventor: Mikhail A. Rakov
  • Patent number: 5906191
    Abstract: The invention discloses a compressed gas-operated firearm (1), especially a pistol, which at the utilization of a drum (18) for multi-shot projectile receipt distinguishes itself through a linearly displaceable weapon barrel (3) to achieve a loading position, or, respectively, firing position, and through a trigger (4) which is automatically secured against actuation in the loading position. Furthermore, a new type of valve system (25) is proposed for the impulse-like emission of the compressed gas upon the discharge of a shot.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: May 25, 1999
    Assignee: Umarex Sportwaffen GmbH & Co. KG
    Inventors: Franz Wonisch, Dietmar Emde
  • Patent number: 5896850
    Abstract: A Paintball Gun of the "cocking type" is provided wherein the cocking pin is covered by a sight rail cover which doubles as an aiming sight or as a platform for a scope. The cocking pin is retracted by use of a cocking link which is slidably disposed within the sight rail cover.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: April 27, 1999
    Inventor: Dennis G. Sullivan, Jr.
  • Patent number: 5884615
    Abstract: A dual mode ammunition loading air or gas-powered gun. The gun is conceived for shooting manually loaded small bullets shot by shot, or for alternatively acting as a repeating weapon for spherical ammunition (2) fed from a loader (4), dispensed one by one into a pocket (9) of an ammunition shifting body (8) mounted in a sliding arrangement, perpendicular to the barrel (3), so as to shift the ammunition up to a position in coalignment with the barrel (3) and with an air/gas delivery hole (17), of a compression chamber. The trigger (18) of the gun, is pin-jointed with a drawing member (19) spring-loaded at one (19a) of its ends and whose other end (19b) is connected to the striking hammer (21) for its cocking and ulterior release. The shifting body (8) is linked with the trigger through an assoicated lever (23) whose first end (23a) is rotatably pin-jointed with said trigger (18) and whose other end (23b) is hinged connected with said shifting body (8).
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: March 23, 1999
    Assignee: Industrias El Gamo, S.A.
    Inventor: Francisco Casas Salva
  • Patent number: 5832911
    Abstract: A weapon comprising a combination lethal weapon and less lethal gas-powered weapon mounted below the lethal weapon. The less lethal weapon which fires projectiles is independently operable when dismounted and includes a bolt, gas supply and magazine features.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: November 10, 1998
    Assignee: Universal Propulsion Company, Inc.
    Inventors: Wayne R. Mayville, Thomas E. Wergen
  • Patent number: 5823173
    Abstract: An improved paintball gun having significantly improved range and accuracy. The barrel of the paintball gun is formed so that the compressed gas expelling the ball from the barrel exerts differential aerodynamic forces on upper and lower hemispheres of the ball, imparting significant backspin to the paintball. Accordingly, the paintball experiences lift in flight, substantially increasing its range and accuracy. The interaction of the ball with the barrel may be wholly aerodynamic. The interior of the paintball is preferably baffled so that paint therein rotates with the shell, preventing the backspin from being damped out rapidly. The surface of the paintball may be contoured to control its aerodynamic characteristics.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: October 20, 1998
    Inventors: Robert M. Slonaker, Michael de Angeli
  • Patent number: 5700972
    Abstract: A cartridge has a case comprising a body (10) housed telescopically within a sleeve (14). The body encloses a main chamber (21) which contains gas under pressure, and a valve mechanism for venting gas from the chamber (21) into an expansion chamber (61). The pressure of the gas in the expansion chamber causes the body (10) to move rearwardly relative to the sleeve (14) to apply a force to the breech block of the weapon in which the cartridge is used, thereby to initiate the reloading cycle. Gas is vented from the expansion chamber to eject a projectile when a spigot (51) projecting from the body is withdrawn from an aperture (53) in the end wall of the sleeve.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: December 23, 1997
    Assignee: Constantia (International) Limited
    Inventor: Michael Ernest Saxby
  • Patent number: 5669369
    Abstract: An improved paint ball gun and improved rotary breech, regulator, control valve, power piston and power valve assemblies for utilization in paint ball guns or related devices. The paint ball gun eliminates moving metal to metal surfaces to provide a consistent operation and easy regulation. The paint ball gun has a rotary breech to minimize damage to paint balls utilized in the paint ball guns.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: September 23, 1997
    Inventor: Eric Scott
  • Patent number: 5640945
    Abstract: An improved paintball and gun therefor cooperate so that the range of the paintball and its accuracy are significantly improved. The external surface of the paintball is contoured so as to increase frictional interaction with air, and the barrel of the paintball gun interacts differentially with the upper and lower hemispheres of the ball so that significant backspin is imparted to the paintball. Accordingly, the paintball experiences lift in flight which substantially increases its range and accuracy. The interaction of the ball with the barrel may be wholly aerodynamic. The interior of the paintball is preferably baffled so that paint therein rotates with the shell, preventing the backspin from being damped out rapidly.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: June 24, 1997
    Assignees: Robert Slonaker, Michael de Angeli
    Inventors: Robert M. Slonaker, Michael de Angeli
  • Patent number: 5634456
    Abstract: A gun suitable for firing paintballs or pellets using compressed gas having an elongate breech section with a longitudinal passageway formed therein and a handle and barrel connected thereto. A hammer is slidably mounted in the passageway and a spring biases the hammer to a forward, firing position. A gas valve system is arranged in the passageway and is connectible to a source of compressed gas. A trigger includes a sear engaging member slidable in a cavity formed in the trigger. A spring biases this member to a rearward position. A sear with a downwardly extending hook is pivotally mounted on a sear pin. A further spring biases the sear so as to pivot the rear end upwardly into engagement with a flange formed on the bolt of the gun. Preferably the hammer and bolt are rigidly connected together by means of two links positioned on opposite sides of the hammer and bolt to which they are both connected.
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: June 3, 1997
    Assignee: Daisy Manufacturing Company, Inc.
    Inventor: Aldo Perrone
  • Patent number: 5622160
    Abstract: Improvements in gas-powered guns of the revolver type. The gun includes a barrel (10), a revolving projectile loader (11) by way of a revolver drum tiltable to one side into a loading position, a rearsight holder (14) bearing a sight (15) which is adjustable positioned by a screw (16), a striking hammer (17) rotationally actuated by a trigger (18) and a grip frame (19) housing a compressed-gas cartridge (20) whose nozzle leans against a seal (21). According to the improvements, a casing (24) moulded on the barrel (10) has an upper expansion (24a) which positionally secures a portion of the rear sight holder (14). The revolving projectile loader (11) is constituted by two pieces obtained by moulding, a first piece (29) comprising a series of tubular elements (30) provided to accommodate the projectiles and to transfer them to the barrel (10), and a second piece (32) constituting a casing and receiving in its inside the former one in a plug-in engagement.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: April 22, 1997
    Assignee: Industrias el Gamo, S.A.
    Inventor: Francisco Casas Salva
  • Patent number: 5613483
    Abstract: A piston and cylinder assembly for a gas powered gun, has a cylinder containing a piston rod slidably movable between a loading position in which the leading end of the piston rod is in a withdrawn position, and a firing position in which the piston rod has moved forwardly. The cylinder has first and second chambers through which the piston rod extends, the cylinder being connectable to a pressurized gas supply supplying pressurized gas to the first chamber when the piston rod is in the loading position. The piston rod permits communication between the pressurized gas supply and the first chamber and prevents communication between the first and second chambers when in the loading position, and when in the firing position prevents communication between the pressurized gas supply and the first chamber and permits communication between the first chamber and the second chamber to cause pressurized gas in the first chamber to pass into the second chamber.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: March 25, 1997
    Inventors: Michael A. Lukas, Roger L. Hurst, Lee D. Kirwan
  • Patent number: 5586545
    Abstract: Two embodiments of a compressed gas gun are disclosed. In the first embodiment, a slidable barrel supported by two barrel guides is employed. A thermoplastic compression sleeve provides a bearing for the slidable barrel, which impacts a valve assembly upon actuation of a trigger mechanism. The impact momentarily opens the valve thereby releasing compressed gas and expelling a projectile. An anti-rebound lock prevents rebound of the barrel and subsequent discharge of gas. In the second embodiment, a slidable bolt assembly serve the function of impacting the valve. The barrel is rigidly attached to the frame of the gun and a spring forces the slidable bolt assembly against the valve. A seal is provided between the slidable bolt assembly and the barrel for allowing slidable movement and preventing the loss of compressed gas.
    Type: Grant
    Filed: October 2, 1995
    Date of Patent: December 24, 1996
    Inventor: John A. McCaslin
  • Patent number: 5572982
    Abstract: A bolt having an opening formed therethrough is slidably located in the bore of the gun. The bolt is held in a rear position by a sear with the bolt opening closed by a valve which extends into the bolt opening and engages a rear facing bolt seat. A passageway extends into the bolt opening for allowing pressurized gas to flow into the bolt opening. A trigger mechanism releases the bolt for allowing the bolt to be moved forward for allowing the valve and seat to separate for allowing the gas to flow through the bolt opening for forcing a ball from the rear end of the barrel out of the gun. The valve and bolt are constructed to allow initially a small amount of gas to flow through the gas outlet of the bolt and then to allow the full force of the gas to flow through the gas outlet. This causes the ball to start rolling before the full force of the air impacts the ball thereby minimizing breakage of the ball in the gun barrel.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: November 12, 1996
    Inventor: Robert A. Williams
  • Patent number: 5529527
    Abstract: Cannons for launching confetti into the air are disclosed in which readily removable connectors secure the elongated hollow tubes filled with confetti to a source of compressed gas. The elongated hollow tubes may be composed of plastic or cardboard, and the readily removable connectors include threaded joints, bayonet joints and quick-disconnect couplings.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: June 25, 1996
    Inventor: James O. Watkins
  • Patent number: 5509399
    Abstract: A semi-automatic fluid powered gun includes an elongated barrel having opposed front and rear open ends, and a projectile storage clip for storing a plurality of projectiles outside of the barrel and for sequentially positioning each projectile in line with the barrel adjacent the rear end. A transfer tube is supported to the rear of and in line with the barrel and is movable between a forward position in which it moves the positioned projectile into the barrel and prevents the other stored projectiles from being positioned in line with the barrel, and a rear position in which the transfer tube permits the next stored projectile to be positioned in line with the barrel. An elongated cylinder is positioned to the rear of and in line with the barrel and includes opposed front and rear open ends, and the transfer tube is received in the front end of the cylinder to provide fluid communication between the cylinder and the barrel when the transfer tube is in the forward position.
    Type: Grant
    Filed: January 12, 1995
    Date of Patent: April 23, 1996
    Inventor: Keith A. Poor
  • Patent number: 5505188
    Abstract: A bolt having an opening formed therethrough is slidably located in the bore of the gun. The bolt is held in a rear position by a sear with the bolt opening closed by a valve which extends into the bolt opening and engages a rear facing bolt seat. A passageway extends into the bolt opening by way of a valve for allowing pressurized gas to flow into the bolt opening. A trigger mechanism releases the bolt for allowing the bolt to be moved forward for allowing the valve and seat to separate for allowing the gas to flow through the bolt opening for forcing a ball from the rear end of the barrel out of the gun. Forward movement of the bolt is stopped by a lock member located in an aperture formed through the wall of the bolt which is forced outward into a slot of the gun body when the lock member reaches the slot. A cock valve located in a cock valve chamber releases gas from the cock valve chamber to force the lock member back into the bolt aperture and to force the bolt back to the rearward position.
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: April 9, 1996
    Inventor: Robert A. Williams
  • Patent number: 5494024
    Abstract: An improved paint ball gun and improved rotary breech, regulator, control valve, power piston and power valve assemblies for utilization in paint ball guns or related devices. The paint ball gun eliminates moving metal to metal surfaces to provide a consistent operation and easy regulation. The paint ball gun has a rotary breech to minimize damage to paint balls utilized in the paint ball guns.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: February 27, 1996
    Inventor: Eric Scott
  • Patent number: 5477843
    Abstract: A model gun with automatic bullet supplying mechanism comprises a slider provided to be movable along a barrel, a movable member provided between a bullet holding chamber provided at the back of the barrel and a pressure chamber with variable capacity provided in the slider, and a gas passage controller provided to be movable in the movable member.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: December 26, 1995
    Assignee: Western Arms
    Inventor: Keiichi Kunimoto
  • Patent number: 5476087
    Abstract: A model gun with automatic bullet supplying mechanism comprises a slider provided to be movable along the barrel, a movable member provided to be movable along moving directions of the slider between a bullet holding chamber provided at the back of the barrel and a pressure receiving portion fixed in the slider to be positioned at the back of the barrel and movable with the slider, and a gas passage controller provided to be movable in the movable member.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: December 19, 1995
    Assignee: Western Arms
    Inventor: Keiichi Kunimoto
  • Patent number: 5404863
    Abstract: A detent assembly at the breech of a gun having a single-shot, tip-up barrel normally holds the barrel in a closed, firing position, yet permits it to be tipped up for loading purposes upon the application of sufficient upward manual force. The detent securely interlocks the barrel with the valve body closely adjacent to the point of gas transfer from the valve body into the barrel so as to minimize misalignment of the barrel and the valve body due to tolerance buildup and manufacturing inaccuracies. Sealing surfaces on the spring loaded arms of the detent assembly situated on opposite lateral sides of the barrel also serve to cover the gap between the end of the valve body and the barrel when the detent is closed so as to inhibit the escape of gas during a firing action and eliminate the need for elastomeric sealing O-rings.
    Type: Grant
    Filed: January 6, 1993
    Date of Patent: April 11, 1995
    Inventor: Keith A. Poor
  • Patent number: 5400536
    Abstract: A gun includes a pivoting barrel assembly, a trigger/hammer double action firing mechanism, and a barrel/inline valve mechanism for firing projectiles. The pivoting barrel assembly includes a projectile-holding rotatable cylinder and an indexing mechanism for rotating the cylinder when the trigger is pulled. A hammer is cocked by a hammer link which is operatively connected to the trigger, and a cam on the hammer lifts the hammer link out of engagement with the hammer when the hammer reaches its cocked position. The valve mechanism includes a valve stem which is slidably mounted in a valve body. A pin portion on the valve stem extends through a valve seal and a valve seal retainer, and the valve seal retainer is retained in the valve body by retainer pins which extend through the body into a groove in the valve seal retainer. A detent housing is connected to the valve body, and a detent is slidably mounted with the detent housing. The detent is engageable with projectile chambers in the cylinder.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: March 28, 1995
    Assignee: Crosman Corporation
    Inventor: Keith L. Milliman
  • Patent number: 5383442
    Abstract: A compressed powered gun has a receiver with a compressed gas source fastened to one end thereof and an elongated barrel through which projectiles may be sequentially discharged fastened to the other end thereof, A clamp is formed as an integral portion of the receiver and adapted to encircle and be tightened about the barrel near one barrel end to connect the barrel to the receiver, A projectile supply hopper containing a plurality of projectiles supplies projectiles sequentially to the receiver by way of a feed tube which is formed as an integral portion of the receiver, A clamp formed as an integral portion of the feed tube is arranged to encircle and be tightened about a portion of the projectile supply hopper thereby securing the projectile supply hopper to the feed tube portion of the receiver.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: January 24, 1995
    Inventor: Dennis J. Tippmann
  • Patent number: 5381779
    Abstract: A balloon distribution system that utilizes balloons retained within an elongated, tubular storage area. Upon receipt of a signal from a remotely located controller, the previously-placed inflated balloons are propelled from the storage container, and float down upon the people gathered below. The tubular body is mounted above the crowd in a manner such that the open end of the tube is slightly elevated in comparison with the adjacent section of the tubular body, preventing the stored balloons from spilling from the tube. A thruster housing is attached to the closed end of the tubular body, and the housing terminates in discharge face having a plurality of outlet nozzles extending into the cavity within the tubular body. A motor and fan supply the airflow, which flows through the thruster housing and into the tubular body through the plurality of nozzles. The motor is actuated via a signal received from a remotely mounted controller.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: January 17, 1995
    Inventor: Allen E. Shelton
  • Patent number: 5363834
    Abstract: A gun having a first mode of operation for propelling the projectile by compressed gas contained within a cartridge and a second mode of operation for propelling the projectile by air compressed by a self contained pumping mechanism. A switching system is provided for switching between the first and second modes. The switching system includes a valve having a first position corresponding to the first mode of operation and a second position corresponding to the second mode of operation. The first position allows compressed gas from the cartridge to propel the projectile and the second position prevents compressed gas from the cartridge from propelling the projectile and allows the projectile to be propelled by compressed air from the pumping mechanism. A switch member is provided for positioning the valve in the first and second positions. The switch member is capable of being actuated by the gun operator to switch the gun between the first and second modes.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: November 15, 1994
    Assignee: Daisy Manufacturing Company, Inc.
    Inventor: William R. Stuchlik
  • Patent number: 5361524
    Abstract: A gas powered weapon including a housing for holding a pressurized gas cartridge and a projectile. A hammer mechanism is utilized to drive the cartridge into a stationary firing pin to cause the discharge of the cartridge thus providing a pulse of pressurized gas to shoot a projectile outwardly. A gas seal is disposed adjacent the firing pin to prevent back pressure behind the cartridge, whereby maximum gas pressure is available to shoot the projectile. The gas seal is located away from the non-firing position of the cartridge, such that the gas seal does not impede the motion of the cartridge when the device is fired.
    Type: Grant
    Filed: July 14, 1993
    Date of Patent: November 8, 1994
    Inventors: Robert R. Karkau, Marc S. Wortz, Michael D. Conner
  • Patent number: 5349939
    Abstract: A gun for firing pellets using compressed gas having a breech, a hammer mechanism slidably mounted in the breech, which mechanism includes a hammer and a spring mounted to drive the hammer forwards when the gun is fired, and a trigger pivotally connected to the breech. A sear device having a front and a rear end is mounted on a sear pin in the breech. A sear spring biases the sear device so that the front end thereof pivots downwardly after the hammer is released. This sear device includes a sear detent slidably mounted in the front end. A small spring biases the sear detent to move to a forward position in order to be engageable by the trigger. The valve mechanism of the gun is mounted by a pin about which extends an elastomeric bumper. This bumper reduces shock loading on a top frame of the gun.
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: September 27, 1994
    Assignee: Brass Eagle Inc.
    Inventor: Aldo Perrone
  • Patent number: 5341790
    Abstract: A gun can be powered by a cartridge of pressurized gas or by pressurized air. The gun includes a valve body which provides a pressure reservoir for storing pressurized gas or air. When the gun is fired, pressurized gas or air is discharged from the pressure reservoir and propels a projectile out of the barrel of the gun. An air pump is mounted on the gun for supplying pressurized air to the pressure reservoir. An adapter assembly is mounted on the gun for holding a cartridge of compressed gas. The adapter assembly includes an adapter housing and a plunger which is slidably mounted in the adapter housing. The plunger is movable between a sealing position in which the plunger sealingly engages the adapter housing and an exhaust position in which pressurized gas or air from the pressure reservoir can flow out of the adapter housing. The plunger is maintained in the sealing position by a gas cartridge or by a plug which can be screwed into the adapter housing.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: August 30, 1994
    Assignee: Crosman Corporation
    Inventor: Gary F. Ebert
  • Patent number: 5339791
    Abstract: What is provided is an improved gas-powered gun for projecting lightweight projectiles, such as paint balls. Like guns presently available on the market, the gun of the invention has a handle, a barrel, a projectile chamber within the barrel, a bolt disposed within the barrel immediately rearward of the projectile chamber, a hammer disposed immediately rearward of the bolt, a spring for propelling the hammer rearwardly during the firing operation, a pressure chamber which retains a discreet amount of a pressurized gas and a valve for releasing the pressurized gas to the projectile chamber upon impact from the hammer. The improved gun of the invention differs from the gun presently on the market by the fact that the improved gun has a cocking mechanism comprising a pump handle slidably disposed around the barrel, and a bolt link slidably disposed in a longitudinal groove defined within the exterior surface of the barrel parallel with the longitudinal axis of the barrel.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: August 23, 1994
    Inventor: Brian Sullivan
  • Patent number: 5285766
    Abstract: A gun is provided with a removable rotary ammunition clip assembly and a slidably mounted barrel to permit the clip assembly to be removed if a pellet jams in a position partially out of the clip and partially in the barrel. The clip assembly is an integral unit and includes a cylindrical loader which is rotatably mounted on the clip housing, an index lever and pawl for rotating the loader, and a transfer bar for translating sliding movement of the trigger into pivoting movement of the index lever. Sliding movement of the trigger moves the trigger link against a hammer for cocking the hammer, and the trigger link moves a hammer latch out of a latching position in which it will engage the hammer to prevent accidental discharge.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: February 15, 1994
    Assignee: Crosman Corporation
    Inventor: Keith L. Milliman
  • Patent number: 5265582
    Abstract: A gas-powered gun fires a projectile at a settable velocity unaffected by substantial increases in the operating pressure of a gas cartridge. The gun has a compartment for accumulating a charge of gas. The compartment includes a chamber whose inlet is controlled by a valve member normally in a closed state. A biasing spring urges a piston assembly within the chamber to deflect the valve member to an open state, allowing pressurized gas flow from the cartridge to the chamber. The pressure of the accumulating gas charge urges the piston assembly away from the valve member. The gas accumulated in the compartment attains only a predetermined threshold when the valve member returns to its closed state. A trigger-controlled discharge valve releases the accumulated gas charge at the threshold pressure into the barrel to fire the projectile.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: November 30, 1993
    Inventor: Mohan Bhogal
  • Patent number: 5257614
    Abstract: What is provided is an improved gas-powered gun for projecting lightweight projectiles, such as paint balls. Like guns presently available on the market, the gun of the invention has a handle, a barrel, a projectile chamber within the barrel, a bolt disposed within the barrel immediately rearward of the projectile chamber, a hammer disposed immediately rearward of the bolt, a spring for propelling the hammer rearwardly during the firing operation, a pressure chamber which retains a discreet amount of a pressurized gas and a valve for releasing the pressurized gas to the projectile chamber upon impact from the hammer. The improved gun of the invention differs from the gun presently on the market by the fact that the improved gun has a guide tube attached to the hammer. The guide tube extends into a bore within the bolt and is dimensioned in close tolerance to the bore within the bolt.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: November 2, 1993
    Inventor: Brian Sullivan
  • Patent number: 5230324
    Abstract: A weapon system which utilizes pressurized gas to propel a projectile from a barrel and which utilizes a shearable diaphragm member to permit the pressure of gas in the weapon to increase to a selected point before the gas propels the projectile from the barrel.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: July 27, 1993
    Inventors: Arden D. Van Horssen, Charles A. Van Horssen
  • Patent number: 5187323
    Abstract: In a cartridge casing there is provided a telescopic valve stem having at its forward end a main outlet valve and at its rearward end a servo- or pressure relief valve, a piston-like collar on the forward part of the valve stem divides the interior of the casing into a forward main chamber and a rearward auxiliary chamber; the chambers are connected by a bleeding passage and have an outlet opening at the forward end and the rearward end of the casing respectively, which openings are normally closed by the respective valves. A chamber of variable volume within the telescopic valve stem is in communication with the atmosphere, due to which the rearward or servo-valve may be opened by a slight fire pin blow to initiate the discharge of pressurized gas filling from the main chamber.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: February 16, 1993
    Inventor: Michael E. Saxby
  • Patent number: 5165383
    Abstract: A gun includes a frame and a pivoting barrel assembly which is releasably latched in a firing position by a pair of flexible and resilient latches on the barrel assembly which engage shoulders on the frame. A trigger is slidably mounted on the frame for movement between a rest position and a firing position. A projectile loader is mounted on the frame at the breech end of the barrel assembly for movement between a loading position and a firing position. The loader is provided with an opening which is aligned with a magazine in the frame when the loader is in the loading position and is aligned with the bore of the barrel assembly when the loader is in the firing position. A camming ramp on the trigger is engageable with the loader for moving the loader between the loading and firing positions as the trigger moves between the rest and firing positions.
    Type: Grant
    Filed: December 26, 1990
    Date of Patent: November 24, 1992
    Assignee: Crosman Corporation
    Inventors: Gary F. Ebert, Keith L. Milliman, Thomas Hughes
  • Patent number: 5149290
    Abstract: A portable, lightweight confetti cannon for projecting confetti to heights of 30-40 feet in the air is used to create spectacular displays for rock concerts or stage shows. The cannon consists of a hollow barrel having a length of at least 8", preferably at least 16" and a length/diameter ratio of at least 14 having a CO.sub.2 cartridge radially mounted at its base. The cartridge is covered by an insulated grip. A valve is mounted between the cartridge and the barrel and has a cartridge puncturing mechanism which enables complete discharge of CO.sub.2 cartridge contents in less than three seconds.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: September 22, 1992
    Inventor: Tyrone J. Reveen
  • Patent number: 5086749
    Abstract: An arrow gun and method for propelling arrows or harpoons in which the gun includes a compressed gas source such as compressed air or CO.sub.2, a handle and trigger arrangement, and a high pressure air passageway system for linking the barrel to the gas source to propel or discharge the arrow. The arrow or harpoon is hollow and is slid over the barrel of the gun so that the barrel guides the arrow upon firing. The air passageway system is responsive to the actuation of the trigger such that the gun when loaded is not subject to pressure build-up and thus avoids accidental discharge hazards. Arrows with or without fletching may be used and are held in place when loaded without latching or locking. Arrows without fletching are held in the loaded position by a gripping means arranged in the vicinity of the point where the barrel connects to the gun, while arrows with fletching are engaged in a shroud cover which surrounds the barrel at the gun handle end.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: February 11, 1992
    Inventor: Glen Ekstrom
  • Patent number: 5078118
    Abstract: An air gun for firing pellets having a unique aluminum breech formed by extrusion. Extending through the breech is a main, large longitudinal passageway in which the hammer mechanism and gas valve system is arranged. A smaller longitudinal passageway for compressed gas is located at one side of the main passageway and is connected to the main passageway by an opening in a central part of the breech. There is a housing for attaching a gas cylinder at the rear end of the breech. In this housing is a further gas passageway for delivering compressed gas from the cylinder to the smaller passageway in the breech. A sealed passageway in the valve body leads from the opening in the center part of the breech to a gas chamber in the valve body.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: January 7, 1992
    Assignee: Brass Eagle Inc.
    Inventor: Aldo Perrone
  • Patent number: 5063905
    Abstract: A pneumatic gun incorporating a striker (50) moving in response to the urging of a compressed power spring (77) from a cocked position in a striker chamber (46) to impact on a primary valve assembly (80) and thereby effect the release of compressed gas for propelling a projectile from the gun and for recocking the striker (50) is disclosed. The primary valve assembly (80) incorporates a single full-pressure main valve (87) for regulating the release of all compressed gas, and a unidirectional low pressure secondary valve (88) for providing a portion of the compressed gas released by the main valve to the striker chamber (46) for urging the striker (50) to move back to the cooked position.
    Type: Grant
    Filed: September 6, 1990
    Date of Patent: November 12, 1991
    Inventor: Kenneth R. Farrell
  • Patent number: 5054464
    Abstract: A rapid fire gas powered projectile gun is comprised of a projectile holder; a barrel connected to the projectile holder having a diameter smaller than the diameter of the projectile holder but at least as large as the diameter of a projectile to be fired, so the projectile to be fired stops before the barrel because of its smaller diameter but is able to pass out of the barrel when pressure is applied to the projectiles; a pressurization device connected to the projectile holder with the pressurization device fluidically connected to the projectile holder; a device for activating the pressurization device; a device for biasing located within the projectile holder and forcing any projectile in the projectile holder to be moved toward the barrel; and a trigger connected to the pressurization device in such a way that when the trigger is pulled pressure passes into the projectile holder forcing the projectiles out of the barrel.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: October 8, 1991
    Inventor: William G. Young
  • Patent number: 5015211
    Abstract: A portable, light-weight confetti cannon for projecting confetti to heights of 30-40 feet in the air is used to create spectacular displays for rock concerts or stage shows. The cannon consists of a hollow barrel having a length of at least 3 feet and a length/diameter ratio of at least 20 having a CO.sub.2 cartridge radially mounted at its base. The cartridge is covered by an insulated grip. A valve is mounted between the cartridge and the barrel and has a cartridge puncturing mechanism which enables complete discharge of CO.sub.2 cartridge contents in less than three seconds.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: May 14, 1991
    Inventor: Tyrone J. Reveen
  • Patent number: 5000155
    Abstract: A connector to an external air source for a gas-operated gun having a cartridge piercing receiving assembly, including a threaded flange skirt and a hollow cartridge piercing-needle, and an opening to permit extension of an air conduit from the gas-operated gun to a pressurized air source external of the gun comprises a connector body and a nose bushing intregal to one end thereof. An air conduit extends through axially aligned passage bores of the nose bushing and connector body, a seating end of which is internal to the gun and is fixly held in air tight communication over the hollow piercing-needle of a cartridge piercing assembly when the nose bushing, which is threaded at its outer annual periphery, is threadedly engaged with a threaded annular inner wall of the flange skirt.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: March 19, 1991
    Inventor: Denis R. Gallagher
  • Patent number: 4967724
    Abstract: A gas pressure pistol, particularly a sports pistol, comprises a compressed gas container, which is disposed below the barrel and which via a passage that is adapted to be closed by a valve communicates with the rear end of the barrel, also comprises a bolt, which is guided in a housing and is adapted to be retracted from the rear end of the barrel, and a trigger mechanism, which is accommodated in the housing and comprises a trigger lever, which is pivotally movable in a pull-off sense, a trigger blade carried by the trigger lever, a spring which opposes the movement of the trigger lever in the pull-off sense, a sear, which cooperates with the trigger lever, and a catch lever, which in a catching position interlocks with the sear and is adapted to retain a spring-loaded striker, which serves to actuate the valve.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: November 6, 1990
    Assignee: Steyr-Daimler-Puch AG
    Inventor: Emil Senfter
  • Patent number: 4936282
    Abstract: A gas operated gun which is designed primarily to propel paint containing frangible projectiles. The gun can be designed to use a manually operable cocking mechanism which permits firing of a single projectile each time the cocking mechanism is operated. Also, the gun may be modified to include a valve mechanism which provides for automatic firing of the gun eliminating the need for the manually operated cocking.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: June 26, 1990
    Inventors: Jerrold M. Dobbins, Ross Alexander
  • Patent number: 4890597
    Abstract: An arrow gun and method for propelling arrows or harpoons in which the gun includes a compressed gas source such as compressed air or CO.sub.2, a handle and trigger arrangement, and a high pressure air passageway system for linking the barrel to the gas source to propel or discharge the arrow. The arrow or harpoon is hollow and is slid over the barrel of the gun so that the barrel guides the arrow upon firing. The air passageway system is responsive to the actuation of the trigger such that the gun when loaded is not subject to pressure build-up and thus avoids accidental discharge hazards. Arrows with or without fletching may be used and are held in place when loaded without latching or locking. Arrows without fletching are held in the loaded position by a tapered seating gap arranged at the point where the barrel connects to the gun, while arrows with fletching are engaged in a shroud cover which surrounds the barrel at the gun handle end.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: January 2, 1990
    Assignee: Swivel Machine Works, Inc.
    Inventor: Glen Ekstrom
  • Patent number: 4697523
    Abstract: A simple to manufacture high pressure rechargeable ammunition cartridge comprising a hollow pressure casing 20 providing a gas storage space 19 to hold compressed gas therein, with a discharge passage 25 in a front part of said casing said gas storage space; an actuation passage 24 extending into said casing from the rear; a valve opening 52 at a front end of said actuation passage, and a valve member which has a normal position wherein it closes said valve opening and blocks said discharge passage, and is movable bodily forwards as shown from said normal position to open both said valve opening and said discharge passage to allow gas to escape from the pressure casing directly through both of said passages to drive a missile. The valve member may be modified so as to be dischargeable from the cartridge and may form part of a missile.
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: October 6, 1987
    Assignee: Hilvenna Limited
    Inventor: Michael E. Saxby
  • Patent number: 4674470
    Abstract: A gas gun includes a chamber, a barrel, and a bullet charging member for introducing bullets into the chamber. An elastic O-ring is positioned between the barrel and the charging member. A stepped part is formed integrally with the chamber and permits radial expansion of the O-ring. When pressurized gas is introduced into the chamber, the O-ring is caused to advance to the stepped part of the chamber when urged by a bullet. The bullet is motivated by the pressurized gas. The O-ring thereby becomes radially enlarged such that the bullet passes through the O-ring and is expelled from the barrel.
    Type: Grant
    Filed: January 15, 1986
    Date of Patent: June 23, 1987
    Assignee: Yugengaisha Asahi Shouji
    Inventor: Megumi Tsukiji
  • Patent number: 4602608
    Abstract: A supply mechanism for gas projectile firing devices includes: a magazine having a storage column for projectiles and a transfer slide for moving projectiles from a column to a position in line with the firing chamber; a mobile element having a transfer bar for moving the transfer slide from the column to its position next to the firing chamber, an insertion piston for moving projectiles from the transfer slide into the firing chamber and a firing pin for opening the valve connecting the compressed gas reservoir to the firing chamber; a trigger which activates the firing and prevents double insertion of a projectile, and a cocking rod which controls the mobile element and the trigger. The mechanism is applicable to training and sports weapons, and to nail and staple guns.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: July 29, 1986
    Assignee: Etat Francais represente par le Delegue General pour l'armement
    Inventors: Jean S. Lacam, Rene E. Pons, Pierre J. Simand