Smoke Or Residue Ejector Patents (Class 89/1.2)
  • Patent number: 10337819
    Abstract: First round shot noise and flash caused by combustion of oxygen contained in the air residing in a firearm sound suppresser can be reduced by providing a valve that communicates with the baffled interior space of the suppressor, and connecting a source of non-flammable gas such as CO2 to the valve in order to inject the gas into the suppressor. The non-flammable gas displaces the air in the suppressor, removing the oxygen available for combustion when the first shot is fired.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: July 2, 2019
    Inventors: David B. Stark, Martin F. Stark, Anthony J. Parilllo
  • Patent number: 10145636
    Abstract: First round shot noise and flash caused by combustion of oxygen contained in the air residing in a firearm sound suppresser can be reduced by providing a valve that communicates with the baffled interior space of the suppressor, and connecting a source of non-flammable gas such as CO2 to the valve in order to inject the gas into the suppressor. The non-flammable gas displaces the air in the suppressor, removing the oxygen available for combustion when the first shot is fired.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: December 4, 2018
    Inventors: David B. Stark, Martin F. Stark, Anthony J. Parilllo
  • Patent number: 9933221
    Abstract: A gun barrel cooler for cooling a firearm, such as an automatic, semi-automatic, bolt action or lever action rifle that includes a centrifugal fan blower with an intake to which ambient barrel coolant air is discharged from the blower where the air flows through a conduit that preferably is a flexible hose, through a coupling used to couple the hose to a barrel coolant discharge nozzle, and out the nozzle into the barrel of the gun desired to be cooled. The nozzle is three dimensionally shaped to substantially conform to the firing chamber of the gun to provide better sealing during cooling. A preferred nozzle is an empty cartridge case of substantially the same caliber as the gun to be cooled that is removably attached to the coupler thereby enabling cartridge cases of different calibers to be used to cool guns of different calibers.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: April 3, 2018
    Assignee: Area 1 Sports, LLC
    Inventor: Walter J. Fiedorowicz
  • Patent number: 9816770
    Abstract: An enclosure holds an air mover, a switch, and a power source such as one or more electric storage batteries. A hollow outflow tube receives air drawn into the enclosure by the air mover. An end of the outflow tube has an outer diameter selected to pass through the action of a firearm and into the firing chamber. When the end of the outflow tube is inserted into the chamber and the air mover is turned on, ambient air is drawn into the enclosure, through the air mover, through the outflow tube, into the chamber, through the bore of the barrel, and out the muzzle, thereby cooling the firearm's barrel. When the end of the outflow tube is inserted into a chamber, an embodiment provides a visual indication that the chamber does not contain a cartridge.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: November 14, 2017
    Assignee: Reliant Engineering and Manufacturing Services, Inc.
    Inventors: Bryan Sumoba, Kamran Honardoost
  • Patent number: 9796057
    Abstract: A gun barrel assembly includes an outer barrel tube, an inner barrel liner, a barrel breech cap and a barrel muzzle cap. The barrel tube and the barrel liner each longitudinally extend from a muzzle end to a breech end, and have axial through bores, with the barrel liner being disposed within and coaxial with the barrel tube bore. The breech cap and the muzzle cap each longitudinally extend from a front end to a rear end and have through axial through bores. The breech cap is mounted to the barrel liner breech end portion and contacts the barrel tube breech end. The muzzle cap is mounted to the barrel liner muzzle end portion and contacts the barrel tube muzzle end. The inside diameter of the barrel tube bore is greater than the outside diameter of the barrel liner whereby the barrel tube does not contact the barrel liner.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: October 24, 2017
    Assignee: Saeilo Enterprises, Inc.
    Inventors: James A. Tertin, Joseph B. Goerges
  • Patent number: 9631902
    Abstract: The turret includes a hollow casing provided with a firearm, such as a cannon. The casing includes a front portion or shell, on which there is mounted the firearm and which defines a front cavity, which at least partially houses the firearm; and a rear portion or tail. The rear portion or tail defines a rear cavity, which houses at least one between a projectile magazine and a mechanism to load the projectiles into the breech of the firearm. The front portion or shell and the rear portion or tail are distinct from one another and are mutually mechanically assembled so that the cavities at least partially communicate with one another.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: April 25, 2017
    Assignee: OTO MELARA SPA
    Inventor: Paolo Arrighi
  • Patent number: 8925438
    Abstract: This invention relates to an improved countermeasure process for both military and civil commercial aircraft under an attack by an infrared heat seeking missile. The countermeasure process involves dispersing liquid substance under high pressure in a spray form rearward of the aircraft tail pipe into the wake of exhaust plume and into the path of trailing missile for the purpose of blinding its guidance system under the plastic dome, by distorting, disrupting and hindering its attack trajectory.
    Type: Grant
    Filed: July 28, 2007
    Date of Patent: January 6, 2015
    Inventors: Budimir Damnjanovic, Desanka Damnjanovic
  • Patent number: 8567300
    Abstract: A bore evacuator for a gun tube may include a time-delayed discharge valve. The time-delayed discharge valve may open substantially simultaneously with the opening of the breech of the gun tube. Gas discharged from the bore evacuator may evacuate the bore of the gun tube. The time delay of the time-delayed discharge valve may be activated by gas pressure in the bore evacuator. The bore evacuator may include a pressure-regulating valve for regulating the maximum pressure in the bore evacuator.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: October 29, 2013
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventor: Daniel L. Cler
  • Patent number: 8161863
    Abstract: A recoil-actuated gun scavenger for a gun having a bore, a breech, a recoiling mass, and a non-recoiling mass. The scavenger may include a pneumatic cylinder and a piston translatable therein. A rod may be fixed to the piston. The cylinder and rod may be fixed to respective recoiling and non-recoiling masses, or vice versa. The cylinder may include intake and exhaust ports with check valves, on both sides of the piston. The exhaust ports may communicate with an accumulator. The accumulator may discharge compressed air to jets located at the open breech end of the gun.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: April 24, 2012
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Jeffrey W. Haas
  • Patent number: 7798044
    Abstract: A weapon system comprising a barrel for accommodating a projectile in a breech end portion, a muzzle end portion and a breech. The weapon system further comprises means for purging the barrel comprising a coanda slot, a coanda profile provided downstream of the coanda slot, and a source of pressurized gas, a duct which connects the source of pressurized gas to the coanda slot so that pressurized gas can be selectively supplied to the coanda slot and along the coanda profile, thereby entraining air in the barrel and exhausting debris and/or fumes through the muzzle end portion after firing of a projectile, and a valve for controlling flow of gas through the duct.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: September 21, 2010
    Assignee: BAE Systems PLC
    Inventor: Michael J. Webb
  • Patent number: 7594463
    Abstract: An evaporative barrel cooler for a firearm includes a firearm adapter having a mist nozzle, and a high pressure coolant reservoir attached to the firearm adapter with a flexible hose. The firearm adapter orients the nozzle inside a firearm chamber and aligned with the bore of a firearm barrel. The firearm adapter conforms to the interior of a firearm action and replaces a firearm bolt. The firearm adapter accesses the chamber through an open action port or through the bolt's raceway. The high pressure coolant reservoir may further include a hand pump attached to the reservoir for pressurizing the coolant. A coolant valve may be incorporated into the flexible hose to control the flow of coolant, whether it is water, alcohol, gunpowder or bullet metal solvent, or a nonflammable and nonreactive material.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: September 29, 2009
    Inventor: Stanley Skinner
  • Publication number: 20080250915
    Abstract: A weapon system comprising a barrel for accommodating a projectile in a breech end portion, a muzzle end portion and a breech. The weapon system further comprises means for purging the barrel comprising a coanda slot, a coanda profile provided downstream of the coanda slot, and a source of pressurised gas, a duct which connects the source of pressurised gas to the coanda slot so that pressurised gas can be selectively supplied to the coanda slot and along the coanda profile, thereby entraining air in the barrel and exhausting debris and/or fumes through the muzzle end portion after firing of a projectile, and a valve for controlling flow of gas through the duct.
    Type: Application
    Filed: October 27, 2006
    Publication date: October 16, 2008
    Applicant: BAE SYSTEMS plc
    Inventor: Michael J Webb
  • Patent number: 7415918
    Abstract: This invention relates to a fume extractor (10) for extracting fumes from a bore (12) of a barrel (14) of a gun and comprising an annular main reservoir (16); an annular inlet reservoir (18); and an annular auxiliary reservoir (20), all concentrically surrounding the barrel (14) and being in communication with each other and the bore (12). The inlet reservoir (18) is sandwiched between the main reservoir (16) and the barrel (14). The auxiliary reservoir (20) is sandwiched between the main reservoir (16) and the barrel (14) and is located adjacent the inlet reservoir (18) on a muzzle brake end thereof. The arrangement is such that the main reservoir (16) is pressurized when the gun is fired and such that the fumes in the bore (12) are extracted by the release of pressure in the main and auxiliary reservoirs (16) and (20), after the projectile has left the barrel (14).
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: August 26, 2008
    Assignee: Denel (Pty) Ltd
    Inventor: Lothar Alwin Paul
  • Patent number: 6851348
    Abstract: A firing apparatus (1.0) for a projectile-firing weapon of the type comprising a barrel (8) having a bore therein, the firing apparatus comprising a breech assembly (2.0) adapted to be secured to the barrel (8), a firing mechanism (5.0) adapted to initiate firing of the projectile from the bore, and a valve means (4.0)adapted to allow air within the bore, between the projectile and the firing mechanism (5.0), to be expelled from the bore during loading of the projectile through the bore.
    Type: Grant
    Filed: July 5, 1999
    Date of Patent: February 8, 2005
    Assignee: Singapore Technologies Kinetics Ltd.
    Inventor: Teoh Hwa Ang
  • Patent number: 6591732
    Abstract: A method and device for cooling a gun barrel wherein coolant is provided to the gun barrel via a nozzle arranged at the downstream end of a pressure feed line arrangement. The coolant is originally conveyed from a reservoir into a pressure cylinder, while the pressure feed line between the pressure cylinder and the nozzle is closed. Thereafter, the coolant in the pressure cylinder is placed under a predefined operating pressure. Prior to firing a round, the pressure feed line is opened, so that the coolant flows to the gun barrel before firing. When firing a shot, the coolant in the gun barrel is compressed to a pressure above the predetermined operating pressure by the firing gases and pushed out of the gun barrel. In the process, the coolant is expanded into a buffer reservoir adjacent to the nozzle and is injected back into the gun barrel after the gas pressure built up has been reduced to the predetermined operating pressure.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: July 15, 2003
    Assignee: Oerlikon Conatraves AG
    Inventors: Michael Gerber, Gabriel Schneider