With Heat Exchanger Patents (Class 89/14.1)
  • Patent number: 10001340
    Abstract: A heat shielding and thermal venting system, having a heat shielding element comprising an elongate, tubular member extending from a first end to a second end; a primary portion formed within a cavity of the heat shielding element; a secondary portion formed within the cavity of the heat shielding element, wherein the secondary portion has a reduced inner cross-sectional area when compared to an inner cross-sectional area of the primary portion; a plurality of entry apertures formed through the heat shielding element proximate the first end; a flare portion formed at the second end; and one or more restricted portions formed along the heat shielding element, wherein each restricted portion includes a reduced inner cross-sectional area, when compared to an inner cross-sectional area of an adjacent interior portion of the heat shielding element.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: June 19, 2018
    Inventor: Paul Oglesby
  • Patent number: 9528785
    Abstract: Disclosed are examples of an apparatus for cooling a barrel 12 of a firearm 10 and examples of a cooled barrel assembly 32 for installation into an existing firearm 10. When assembled with the barrel 12, a contact surface 16 of a shell 14 is proximate to, and in thermal communication with, the outer surface of the barrel 18. The shell 14 is formed of commercially available or modified graphite foam.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: December 27, 2016
    Assignee: UT-Battelle, LLC
    Inventors: James W. Klett, Michael P. Trammell
  • Patent number: 9207031
    Abstract: A weapon includes a cover system that extends a length. The cover system includes an opening that extends through the length of the cover system. The weapon includes a barrel that extends through the opening of the cover system. The cover system includes a composite material that is configured to provide thermal insulation relative to heat emitted from the barrel.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: December 8, 2015
    Assignee: TYCO ELECTRONICS CORPORATION
    Inventors: Andrew Dewitt Balthaser, Robert Neil Mulfinger
  • Patent number: 8950310
    Abstract: A suppressor assembly for connection to the muzzle of a firearm includes an injector portion for connection to the muzzle and a suppressor portion for connection to the injector portion. The injector portion has a chamber for holding a quantity of fluid. When a firearm is discharged and the projectile passes through the injector portion, fluid is drawn from the chamber and into the suppressor portion to thereby shield the suppressor portion from full impact of gases associated with the fired projectile. The injector and suppressor portions can be operated independently and the injector portion can also function as a muzzle break, flash suppressor, and so on.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: February 10, 2015
    Assignee: Storrs Investments, L.L.C.
    Inventors: Norven Storrs, Jarod Todd
  • Publication number: 20140290471
    Abstract: A device and a method for performing thermal compensation of a weapon barrel of a gun having at least one weapon barrel which is mounted in a barrel cradle and in a barrel support as a prolongation of the barrel cradle. A plurality of temperature sensors are integrated into the barrel cradle and the barrel support and are connected via data lines to a data box. The data box is connected to a data processing device, which acts on actuators of the gun. The temperature at the barrel cradle and the barrel support is measured by temperature sensors. The temperature difference between upper and lower sides and right-hand and left-hand sides of the barrel cradle and the barrel support are determined. The barrel inclination is then calculated from these values, and the barrel inclination is then compensated by adjusting the orientation of the weapon barrel in its azimuth and/or elevation.
    Type: Application
    Filed: December 9, 2013
    Publication date: October 2, 2014
    Applicant: RHEINMETALL AIR DEFENCE AG
    Inventors: Dominic BRUNNER, Raffael MEIER
  • Patent number: 8807005
    Abstract: A suppressor is disclosed for use with a weapon having a barrel through which a bullet is fired. The suppressor has an inner portion having a bore extending coaxially therethrough. The inner portion is adapted to be secured to a distal end of the barrel. A plurality of axial flow segments project radially from the inner portion and form axial flow paths through which expanding propellant gasses discharged from the barrel flow through. The axial flow segments have radially extending wall portions that define sections which may be filled with thermally conductive material, which in one example is a thermally conductive foam. The conductive foam helps to dissipate heat deposited within the suppressor during firing of the weapon.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: August 19, 2014
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: William C. Moss, Andrew T. Anderson
  • Patent number: 8794122
    Abstract: This invention is directed to a rifle barrel sleeve system for a gas operated weapon system comprising: a rear sleeve surrounding a rear portion of the rifle barrel; a front sleeve surrounding a front portion of the rifle barrel; a gas elbow support surrounding the rifle barrel disposed between the rear sleeve and the front sleeve having a gas chamber allowing gas to escape from a barrel gas port into the gas elbow; and, a void defined between the rear sleeve, front sleeve, gas elbow and barrel having filler material.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: August 5, 2014
    Assignee: Zike, LLC
    Inventor: Alan Adolphsen
  • Patent number: 8783154
    Abstract: A Seebeck active cooling device for use in conjunction with a weapon to cool the barrel, in order to reduce its weight, to remove the need for a second barrel, and to prolong its useful life. In particular, the cooling device employs a plurality of thermoelectric devices that convert the energy from the heat produced by the hot barrel during the operation to an electric current. The electric current powers a series of electric fans, which in turn, cool the barrel.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: July 22, 2014
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: James J. Windham, Ryan P. Martin, Jessica M. Hale
  • Patent number: 8763509
    Abstract: A firearm cooling apparatus includes an apparatus housing having a housing interior; at least one vent opening in the apparatus housing and communicating with the housing interior; a fan in the housing interior adjacent to the at least one vent opening; a fan motor drivingly engaging the fan; a source of electrical current disposed in electrical communication with the fan motor; a switch disposed in electrical communication with the fan motor and the source of electrical current; a tubing connector rotatably carried by the apparatus housing; and an elongated, bendable, flexible and resilient cooling tube disposed in pneumatic communication with the housing interior through the tubing connector and having an air discharge end opposite the tubing connector.
    Type: Grant
    Filed: February 18, 2013
    Date of Patent: July 1, 2014
    Inventor: Wendell Nagel
  • Patent number: 8677879
    Abstract: A firearm cooling device that includes a briefcase with a lockable lid, an adjustable firearm mount disposed upon the briefcase lid, an air pump disposed within a compartmentalized housing disposed within the briefcase, a rechargeable battery disposed within the compartmentalized housing, said battery in circuit with the air pump, an air vent disposed upon the briefcase in open communication with the air pump, an outlet port disposed upon the briefcase in open communication with the air pump, and an air hose releasably connectable to the outlet port, wherein an extant firearm is supportable within the adjustable firearm mount and air forcibly expelled by the air pump through the air hose is directable proximal the barrel of said firearm to more efficiently radiate heat therefrom whereby said firearm is more rapidly cooled thereby.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: March 25, 2014
    Inventors: Jeff S. Gresham, Terry Calhoon
  • Publication number: 20140076135
    Abstract: A weapon includes a cover system that extends a length. The cover system includes an opening that extends through the length of the cover system. The weapon includes a barrel that extends through the opening of the cover system. The cover system includes a composite material that is configured to provide thermal insulation relative to heat emitted from the barrel.
    Type: Application
    Filed: June 12, 2012
    Publication date: March 20, 2014
    Applicant: Tyco Electronics Organization
    Inventors: Andrew Dewitt Balthaser, Robert Neil Mulfinger
  • Publication number: 20140076136
    Abstract: A suppressor is disclosed for use with a weapon having a barrel through which a bullet is fired. The suppressor may have an inner portion having a bore extending coaxially there through. The inner portion is adapted to be secured to a distal end of the barrel. A plurality of axial flow segments project radially from the inner portion and form axial flow paths through which expanding propellant gasses discharged from the barrel flow through. The axial flow segments have radially extending wall portions that help to dissipate heat deposited within the suppressor during firing of the weapon.
    Type: Application
    Filed: January 10, 2013
    Publication date: March 20, 2014
    Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
    Inventor: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
  • Patent number: 8656621
    Abstract: A heatshield assembly for a metal barrel of a firearm includes a heatshield body provided with a rear end extending to a front end, and configured to overlie the barrel of the firearm. An insulating mounting arrangement is frictionally attached to and located within the heatshield body. The mounting arrangement is separate from the heatshield body for mounting the heatshield body to the barrel of a firearm in a continuous spaced relationship therefrom without damaging the barrel. With the heatshield body constructed of a metal material, the mounting arrangement is particularly constructed to prevent metal-to-metal contact between the heatshield body and the barrel.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: February 25, 2014
    Assignee: Advanced Technology International USA, LLC
    Inventor: John R. Chvala
  • Publication number: 20130312592
    Abstract: A suppressor assembly for connection to the muzzle of a firearm includes an injector portion for connection to the muzzle and a suppressor portion for connection to the injector portion. The injector portion has a chamber for holding a quantity of fluid. When a firearm is discharged and the projectile passes through the injector portion, fluid is drawn from the chamber and into the suppressor portion to thereby shield the suppressor portion from full impact of gases associated with the fired projectile. The injector and suppressor portions can be operated independently and the injector portion can also function as a muzzle break, flash suppressor, and so on.
    Type: Application
    Filed: May 22, 2013
    Publication date: November 28, 2013
    Inventors: Norven Storrs, Jarod Todd
  • Patent number: 8413571
    Abstract: This invention is directed to a rifle barrel having a gas port for a gas operated weapon system comprising: an inner barrel; a gas redirection tube operably associated to the inner barrel so that expelled gas from a cartridge travels out of the gas port and into the gas redirection tube; a sleeve arranged around the inner rifle barrel defining a void between the rifle barrel and the sleeve surrounding the rifle barrel; and, filler material carried in the void defined between the inner barrel and the sleeve wherein the gas redirection tube is disposed within the filler material between the sleeve and the inner barrel.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: April 9, 2013
    Assignee: Teludyne Tech Industries, Inc.
    Inventor: Alan Adolphsen
  • Patent number: 8347773
    Abstract: A thermal insulation jacket for a gun barrel, especially a cannon barrel, where the thermal insulation jacket includes a metal jacket that surrounds the gun barrel. In order to prevent uneven heating of the surface of the gun barrel within the thermal insulation jacket, an additional area that is especially effective at reflecting thermal radiation is provided on the inner surface of the metal jacket that lies opposite the underside of the gun barrel, so that when the gun barrel heats, the temperature differences between the upper side and the underside of the gun barrel are at least partially compensated. For this purpose, a reflective film is provided as the area that is a good reflector of thermal radiation. This reflective film is adhesively attached to the metal jacket.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: January 8, 2013
    Assignee: Rheinmetall Waffe Munition GmbH
    Inventors: Gert Schlenkert, Eckehard Bohnsack, Alexander Tekin
  • Patent number: 8307751
    Abstract: This invention is directed to a rifle barrel having a gas port for a gas operated weapon system comprising: a forward gas redirection tube operably associated to said rifle barrel so that expelled gas from a cartridge travels out of said gas port and into said forward gas redirection tube; a rear gas connector operably associated with said forward gas redirection tube for receiving expelled gas traveling in said forward gas redirection tube; a rear gas redirection tube removably connected to said rear gas connector for receiving expelled gas and transferring said gas to the action of the weapons system to assist with the cycling of the weapons system action; a sleeve arranged around said rifle barrel defining a void between said rifle barrel and said sleeve; and filler material carried in said void defined between said rifle barrel and said sleeve wherein said forward gas redirection tube is disposed within said filler material between said sleeve and said barrel.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: November 13, 2012
    Assignee: Teludyne Tech Industries, Inc.
    Inventor: Alan Adolphsen
  • Patent number: 8245618
    Abstract: A barrel jacket covering at least partially the outer surface of the bullet-guiding barrel of a firearm is provided, wherein the barrel jacket has at least one inner casing and one outer casing and a spacer. The inner casing is arranged adjacent to the barrel, covering the barrel in a close-up position. The outer casing is arranged at a distance to the inner casing, covering the inner casing, thus providing a continuous gap. The continuous gap is stabilized by at least one spacer, which stabilizes the inner casing and outer casing in their relative positions.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: August 21, 2012
    Assignee: German Sport Guns GmbH
    Inventor: Dietmar Emde
  • Patent number: 8025003
    Abstract: A firearm barrel having barrel flutes on the outer surface of the barrel where the barrel flutes are undercut relative to an outward radial vector from the center of the barrel at an arcuate radial distance that exceeds the arcuate radial distance of an undercut produced by a straight walled flute cutter such that the barrel flutes are hyper-undercut.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: September 27, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Thomas W. Saur
  • Patent number: 7997020
    Abstract: A firearm having a receiver housing an action-cycling mechanism, a barrel having a muzzle opening on a distal end, a shroud coaxially surrounding at least a portion of the barrel, the shroud having a distal portion extending beyond the muzzle opening defining a shroud front region having a distal end portion, a proximal portion extending proximally from the muzzle opening defining an annular region between the barrel and shroud, a front wall disposed at the distal end portion of the shroud, the front wall having an opening to allow passage of a projectile fired from the gun barrel, a firewall disposed in the annular region of the proximal portion of the shroud, the firewall moveable relative to the gun barrel between a forward, at-rest position, and a rearward, compressed position, the firewall mechanically engaged with the action cycling mechanism, and heat-dissipating fins in the annular region extending longitudinally along, and radially outward from, the gun barrel to the shroud, the fins defining channel
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: August 16, 2011
    Inventor: John K. Brixius
  • Patent number: 7963203
    Abstract: A rifle with an upper receiver and a barrel attached to the upper receiver and including a bolt carrier, and operating, buffer, and cooling systems. The operating system includes a cylinder and a piston coupled to receive propelling gases from the barrel. As the piston moves between retracted and extended positions the bolt carrier is moved between closed and open positions. The bolt carrier includes a weight movable within a guide frame between rearward and forward limits. The buffer system includes a compression spring in a tube attached to the upper receiver in abutting engagement with the bolt carrier. A partially fluid filled cylinder is attached to a coil of the spring and includes a piston and shaft. The piston is formed so that fluid in the cylinder restricts movement in one direction and allows free movement in a second direction.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: June 21, 2011
    Inventor: Robert B. Davies
  • Publication number: 20110100204
    Abstract: A thermal insulation jacket for a gun barrel, especially a cannon barrel, where the thermal insulation jacket includes a metal jacket that surrounds the gun barrel. In order to prevent uneven heating of the surface of the gun barrel within the thermal insulation jacket, an additional area that is especially effective at reflecting thermal radiation is provided on the inner surface of the metal jacket that lies opposite the underside of the gun barrel, so that when the gun barrel heats, the temperature differences between the upper side and the underside of the gun barrel are at least partially compensated. For this purpose, a reflective film is provided as the area that is a good reflector of thermal radiation. This reflective film is adhesively attached to the metal jacket.
    Type: Application
    Filed: November 4, 2008
    Publication date: May 5, 2011
    Inventors: Gert Schlenkert, Eckehard Bohnsack, Alexander Tekin
  • Patent number: 7905041
    Abstract: A firearm includes a support block having a forward end and a rearward end, and carrying a receiver on a top surface thereof. A rearward barrel guide having a thrust coupling extending radially outwardly therefrom, the thrust coupling engaging an engagement element located at the forward end of the support block, thereby aligning the rearward barrel guide with the support block. Also provided is a barrel having a breech end and a muzzle end, the breech end is received through the rearward barrel guide and coupled to the receiver. A forward barrel guide is fixed to the barrel intermediate the muzzle end and the breech end. A handguard assembly is received over the barrel and coupled to the rearward barrel guide and the forward barrel guide, stabilizing the barrel.
    Type: Grant
    Filed: September 29, 2007
    Date of Patent: March 15, 2011
    Inventor: Robert B. Davies
  • Patent number: 7827722
    Abstract: A rifle with an upper receiver and a barrel attached to the upper receiver and including a bolt carrier, and operating, buffer, and cooling systems. The operating system includes a cylinder and a piston coupled to receive propelling gases from the barrel. As the piston moves between retracted and extended positions the bolt carrier is moved between closed and open positions. The bolt carrier includes a weight movable within a guide frame between rearward and forward limits. The buffer system includes a compression spring in a tube attached to the upper receiver in abutting engagement with the bolt carrier. A partially fluid filled cylinder is attached to a coil of the spring and includes a piston and shaft. The piston is formed so that fluid in the cylinder restricts movement in one direction and allows free movement in a second direction.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: November 9, 2010
    Inventor: Robert B. Davies
  • Patent number: 7810272
    Abstract: A firearm barrel assembly having a gun barrel with a muzzle opening on a distal end, a shroud coaxially surrounding at least a portion of the barrel, the shroud having a distal portion extending beyond the muzzle opening defining a shroud front region having a distal end portion, a proximal portion extending proximally from the muzzle opening defining an annular region between the barrel and shroud, the shroud front region and annular region in fluid communication with substantially no obstruction between the shroud front region and the annular region, and a front wall disposed at the distal end portion of the shroud. The wall has an opening to allow passage of a projectile fired from the firearm.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: October 12, 2010
    Inventor: John Brixius
  • Patent number: 7793452
    Abstract: A modular fore-end rail assembly for a firearm is disclosed. The assembly includes an upper handguard having forward and rearward ends. A dovetail rail extends between the forward and rearward ends. Opposing sidewalls extend outwardly and downwardly from the dovetail rail, respectively. The sidewalls terminate in mounting channels. The rearward end includes a first clamping member. A clamp is removably secured to the rearward end and cooperates with the first clamping member to engage a barrel nut of a firearm. The clamp has an exterior surface including a slidable locking pin movable between a locked position and an unlocked position. A lower handguard includes sidewalls that extend outwardly and upwardly. The sidewalls terminate in mating formations that are configured to be slidably received in the mounting channels. A lock aperture is provided at a rearward end of the lower handguard.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: September 14, 2010
    Assignee: Samson Manufacturing Corporation
    Inventors: Scott W. Samson, Kenneth Lankarge
  • Publication number: 20100224053
    Abstract: A firearm barrel assembly having a gun barrel with a muzzle opening on a distal end, a shroud coaxially surrounding at least a portion of the barrel, the shroud having a distal portion extending beyond the muzzle opening defining a shroud front region having a distal end portion, a proximal portion extending proximally from the muzzle opening defining an annular region between the barrel and shroud, the shroud front region and annular region in fluid communication with substantially no obstruction between the shroud front region and the annular region, and a front wall disposed at the distal end portion of the shroud. The wall has an opening to allow passage of a projectile fired from the firearm.
    Type: Application
    Filed: August 2, 2007
    Publication date: September 9, 2010
    Inventor: John Brixius
  • Publication number: 20100192759
    Abstract: A cooling system for a Gatling machine gun can be use to retrofit an existing machine gun or can be incorporated in a newly manufactured gun. The system directs fluid through the housing assembly of the machine gun to a location intermediate barrels of the gun, and discharges the fluid to cool the barrels.
    Type: Application
    Filed: July 3, 2007
    Publication date: August 5, 2010
    Inventor: Tracy W. Garwood
  • Patent number: 7707763
    Abstract: A firearm barrel assembly having a gun barrel with a muzzle opening on a distal end, a shroud coaxially surrounding at least a portion of the barrel, the shroud having a distal portion extending beyond the muzzle opening defining a shroud front region having a distal end portion, a proximal portion extending proximally from the muzzle opening defining an annular region between the barrel and shroud, the shroud front region and annular region in fluid communication with substantially no obstruction between the shroud front region and the annular region, and a front wall disposed at the distal end portion of the shroud. The wall has an opening to allow passage of a projectile fired from the firearm.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: May 4, 2010
    Inventor: John Brixius
  • Publication number: 20100058921
    Abstract: A firearm barrel assembly having a gun barrel with a muzzle opening on a distal end, a shroud coaxially surrounding at least a portion of the barrel, the shroud having a distal portion extending beyond the muzzle opening defining a shroud front region having a distal end portion, a proximal portion extending proximally from the muzzle opening defining an annular region between the barrel and shroud, the shroud front region and annular region in fluid communication with substantially no obstruction between the shroud front region and the annular region, and a front wall disposed at the distal end portion of the shroud. The wall has an opening to allow passage of a projectile fired from the firearm.
    Type: Application
    Filed: August 2, 2007
    Publication date: March 11, 2010
    Inventor: John Brixius
  • 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
  • Patent number: 7464496
    Abstract: A barrel nut for coupling a barrel of a firearm to a receiver includes a body having a first end, an opposing second end, and an outer surface. A bore extends centrally through the body from the first end to the second end. A plurality of heat conducting fins extends radially outwardly from the outer surface of the body. A fastening element fastens the breach end of the barrel nut to the receiver.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: December 16, 2008
    Inventors: Robert B. Davies, Frank Desomma
  • Publication number: 20080276795
    Abstract: Cooling channels are milled on the peripheral surface of the individual cartridge chamber(s). Milling the cooling channels on the freely accessible surface makes it possible to simplify production.
    Type: Application
    Filed: February 8, 2008
    Publication date: November 13, 2008
    Inventor: Marcos Trigo
  • 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: 7363741
    Abstract: A hand guard assembly for a firearm including a barrel. The assembly includes a tubular unitary body mounted to surround a portion of the barrel substantially coaxially and in a transversely spaced relationship. The tubular body includes a plurality of air flow openings formed therethrough and at least one of a top rail formed as a unitary portion of the tubular body and extending rearwardly along an upper portion of a receiver of the firearm, side accessory rails formed as a unitary portion of the tubular body and on opposed sides of the tubular body, and a bottom accessory rail formed as a unitary portion of the tubular body and on a bottom surface of the tubular body. In the preferred method of fabricating the assembly, the body and any include accessory rails are extruded.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: April 29, 2008
    Inventors: Frank DeSomma, Robert B. Davies
  • Patent number: 6945154
    Abstract: A gun barrel handguard includes half sections having longitudinally spaced apart fins of plastic material positioned around the exterior of the gun barrel for absorbing heat but preventing it from being quickly transmitted to the exterior of the handguard.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: September 20, 2005
    Inventor: Randy E. Luth
  • Patent number: 6885332
    Abstract: The present invention is a multi-piece barrel shroud which provides IR signature and radar backscatter reduction over the entire length of the barrel by utilization of special radar absorbing materials and shaped in accordance with commonly known radar signature reduction techniques. The interior of the shroud includes cooling passages for the circulation of ambient air by way of a forced air circulation system which provides IR reduction. To facilitate barrel movement while minimizing weight, the majority of the shroud is stationary and is independent of the gun barrel. At least one other piece of the shroud is attached to the barrel near the muzzle end and designed to move in unison with the muzzle during recoil. The recoiling portion of the shroud is sized to mate with an annular recess within the distal end of the stationary portion so as to provide continuous shielding of the barrel throughout the entire range of recoil displacement.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: April 26, 2005
    Assignee: United Defense, L.P.
    Inventors: Alan W. Panek, John P. Hinsverk
  • Publication number: 20040119629
    Abstract: The present invention is a multi-piece barrel shroud which provides IR signature and radar backscatter reduction over the entire length of the barrel by utilization of special radar absorbing materials and shaped in accordance with commonly known radar signature reduction techniques. The interior of the shroud includes cooling passages for the circulation of ambient air by way of a forced air circulation system which provides IR reduction. To facilitate barrel movement while minimizing weight, the majority of the shroud is stationary and is independent of the gun barrel. At least one other piece of the shroud is attached to the barrel near the muzzle end and designed to move in unison with the muzzle during recoil. The recoiling portion of the shroud is sized to mate with an annular recess within the distal end of the stationary portion so as to provide continuous shielding of the barrel throughout the entire range of recoil displacement.
    Type: Application
    Filed: December 20, 2002
    Publication date: June 24, 2004
    Inventor: John P. Hinsverk
  • Publication number: 20040094025
    Abstract: A cooler for one or a plurality of metal tubes with a cooler housing having intake vents, a powered turbine, at least one exhaust holes and metal tube supports. The one or a plurality of metal tubes received by metal tube supports and positioned to receive coolant flow from the turbine.
    Type: Application
    Filed: August 22, 2002
    Publication date: May 20, 2004
    Inventors: Alan L. Meissner, Penny D. Meissner, Marty H. Meissner, James E. Lilwall
  • Patent number: 6705195
    Abstract: Apparatus for cooling the barrel of a gun having a receiver configured to receive a magazine, has a housing dimensionally similar to a magazine for insertion into the receiver and contains a fan including a fan motor and shroud with an air inlet and outlet. An electric power source and circuit connector/disconnector operate the fan motor to establish an air flow path through the air inlet and outlet, with the outlet being positioned so that the air flow path passes through the gun barrel.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: March 16, 2004
    Inventor: Brian Thornton
  • Patent number: 6694660
    Abstract: A handguard system for use on a rifle having a barrel and a receiver, the hand guard system includes a barrel nut having an inner surface with a threaded portion adapted to threadably engage the receiver for securing the barrel to the receiver and an outer surface, and a tubular handguard having an end. The tubular handguard is receivable about the barrel and is received about the barrel nut, engaging the outer surface thereof.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: February 24, 2004
    Inventor: Robert B. Davies
  • Patent number: 6679156
    Abstract: A weapon for firing a projectile is provided that includes a receiver within which is disposed a loading mechanism for loading and unloading the weapon. A feed system supplies the loading mechanism with ammunition and a firing mechanism releases the loading mechanism for loading and firing the projectile. A barrel is rotatively secured to the receiver and preferably includes a rifled bore that imparts a gyroscopic spin on the projectile and a rotational force on the barrel causing the barrel to rotate as the projectile is fired. In a preferred embodiment, the barrel is provided with a plurality of blades that capture air and generate airflow across the weapon and barrel to cool the barrel.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: January 20, 2004
    Inventor: Samir A. Danou
  • Publication number: 20030167909
    Abstract: A fire control system for a firearm, such as a rifle, operates a bolt action for increased rate of fire and convenience while retaining the secure locking of the firing chamber by manual bolt actions. After a controller determines that a round has been fired, one or more actuators, such as electrically actuated tooth wheels or gears, unlocks and reciprocates the bolt action to extract the spent shell and to load an unfired cartridge. Thereby, a consistent locking action is achieved avoiding the inconsistent sealing of conventional automatic bolt actions. Consistent accuracy with increased firing rate operation is further achieved with a cooling system activated when the firearm exceeds an optimum temperature operating range.
    Type: Application
    Filed: March 7, 2002
    Publication date: September 11, 2003
    Inventor: Jean-Paul Matter
  • Patent number: 6508159
    Abstract: A firearm heat sink is provided that may be easily affixed to, and removed from, a firearm. The heat sink is provided with a plurality of cooling fins. In a preferred embodiment, the firearm heat sink is held in place by a cooperating collet and ring on each end of the heat sink. In an alternate embodiment, the firearm heat sink is formed in halves and is mechanically fastened together about the barrel of the firearm. In either embodiment, an underlying heat conducting material optionally may be added to insure a proper thermal path between the firearm and the heat sink.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: January 21, 2003
    Inventor: Todd A. Muirhead
  • Publication number: 20030010186
    Abstract: A firearm heat sink is provided that may be easily affixed to, and removed from, a firearm. The heat sink is provided with a plurality of cooling fins. In a preferred embodiment, the firearm heat sink is held in place by a cooperating collet and ring on each end of the heat sink. In an alternate embodiment, the firearm heat sink is formed in halves and is mechanically fastened together about the barrel of the firearm. In either embodiment, an underlying heat conducting material optionally may be added to insure a proper thermal path between the firearm and the heat sink.
    Type: Application
    Filed: July 13, 2001
    Publication date: January 16, 2003
    Inventor: Todd A. Muirhead
  • Publication number: 20030010187
    Abstract: A firearm heat sink is provided that may be easily affixed to, and removed from, a firearm. The heat sink is provided with a plurality of cooling fins. In a preferred embodiment, the firearm heat sink is held in place by a cooperating collet and ring on each end of the heat sink. In an alternate embodiment, the firearm heat sink is formed in halves and is mechanically fastened together about the barrel of the firearm. In either embodiment, an underlying heat conducting material optionally may be added to insure a proper thermal path between the firearm and the heat sink.
    Type: Application
    Filed: June 7, 2002
    Publication date: January 16, 2003
    Inventor: Todd A. Muirhead
  • Patent number: 6461752
    Abstract: The invention is an electric generator comprising a portable electric generator and a thermal electric co-generator. The co-generator converts heat produced by the portable electric generator into electricity. In one embodiment of the present invention, the portable electric generator is a microturbine. In another embodiment, the portable electric generator is a fuel cell. In a further embodiment, the thermal electric generator comprises a hot thermocouple and a cold thermocouple.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: October 8, 2002
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Fee Chan Leung
  • Patent number: 6314857
    Abstract: A weapon barrel includes a liner having first and second circumferential regions; a jacket surrounding the liner; and an arrangement for effecting a heat transfer outwardly from the liner at a greater rate from the first circumferential region than from the second circumferential region.
    Type: Grant
    Filed: February 4, 2000
    Date of Patent: November 13, 2001
    Assignee: Rheinmetall W & M GmbH
    Inventors: Bernd Schmidt, Berthold Baumann
  • Patent number: 6311602
    Abstract: The service life of gun barrels of firearms with a high cyclic rate can be extended by means of the cooling device of the invention. To this end, coolant (7) is conveyed from a reservoir (6) into a pressure cylinder (10) by drawing up a hydraulic cylinder (13), while the feed line (14) to the gun barrel is closed. Thereafter the hydraulic piston (13) is moved in the opposite direction by a pressure reversal and the coolant (7) in the pressure cylinder (10) is placed under a defined operating pressure. Prior to triggering a volley, the feed line (14) is opened, so that the coolant (7) can flow via the feed line (14) and the nozzle (16) to the gun barrel (1). The coolant (7) is pushed back by the gas pressure respectively being created when a shot is fired, and following the lowering of the gas pressure to the operating pressure, it is again injected into the gun barrel (1).
    Type: Grant
    Filed: July 14, 1999
    Date of Patent: November 6, 2001
    Assignee: Oerlikon Contraves AG
    Inventors: Michael Gerber, Gabriel Schneider
  • Patent number: RE45185
    Abstract: A handguard system for use on a rifle having a barrel and a receiver, the hand guard system includes a barrel nut having an inner surface with a threaded portion adapted to threadably engage the receiver for securing the barrel to the receiver and an outer surface, and a tubular handguard having an end. The tubular handguard is receivable about the barrel and is received about the barrel nut, engaging the outer surface thereof. REEXAMINATION RESULTS The questions raised in reexamination proceeding No. 90/008,357, filed Dec. 1, 2006, have been considered, and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U.S.C. 307 as provided in 37 CFR 1.570(e) for ex parte reexaminations, or the reexamination certificate required by 35 U.S.C. 316 as provided in 37 CFR 1.997(e) for inter partes reexaminations.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: October 14, 2014
    Inventor: Robert Bruce Davies