EP0621941A1 - Firearm. - Google Patents
Firearm.Info
- Publication number
- EP0621941A1 EP0621941A1 EP94908175A EP94908175A EP0621941A1 EP 0621941 A1 EP0621941 A1 EP 0621941A1 EP 94908175 A EP94908175 A EP 94908175A EP 94908175 A EP94908175 A EP 94908175A EP 0621941 A1 EP0621941 A1 EP 0621941A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- firearm
- barrel
- housing
- gas
- interior
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001816 cooling Methods 0.000 claims description 11
- 239000004033 plastic Substances 0.000 claims description 6
- 239000012080 ambient air Substances 0.000 claims description 5
- 210000000245 forearm Anatomy 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 42
- 230000007257 malfunction Effects 0.000 description 5
- NIOPZPCMRQGZCE-WEVVVXLNSA-N 2,4-dinitro-6-(octan-2-yl)phenyl (E)-but-2-enoate Chemical compound CCCCCCC(C)C1=CC([N+]([O-])=O)=CC([N+]([O-])=O)=C1OC(=O)\C=C\C NIOPZPCMRQGZCE-WEVVVXLNSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
- F41A21/28—Gas-expansion chambers; Barrels provided with gas-relieving ports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A13/00—Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems
- F41A13/12—Systems for cooling the outer surface of the barrel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
- F41A21/32—Muzzle attachments or glands
- F41A21/36—Muzzle attachments or glands for recoil reduction ; Stabilisators; Compensators, e.g. for muzzle climb prevention
Definitions
- the invention relates to a firearm with a projectile barrel.
- the firearm can be designed as a light machine cannon, as a machine gun, as a submachine gun, but also as a pistol, repeating rifle or single loader. However, it is preferably designed as a rapid-fire rifle with a locked or delayed breech.
- the projectile tube also referred to simply as a tube below, is preferably set up with a cartridge chamber for receiving a cartridge case provided with a projectile, charge and detonator, but can in principle also be set up for caseless ammunition.
- the rear end of this tube adjoins the front end of the path of movement of the breech which is movably guided inside the weapon housing.
- the rear barrel end is attached to the weapon housing with its outside - directly or indirectly via an intermediate piece.
- the intermediate piece can be composed of one or more parts, for example of several concentric sleeves, and have a central longitudinal bore in which the rear pipe end is fastened (preamble of claim 1).
- front / rear used in this application refer to the firing direction.
- the “longitudinal direction” is understood to mean the weft direction, the direction of the core axis or a direction parallel to this.
- Terms such as “top”, “bottom” or the like refer to a weapon position with a horizontal core axis or firing direction. In all of the aforementioned firearms, malfunctions can occur in rare cases, in which compressed gas escapes from the barrel into the interior of the housing in an unforeseen manner.
- gas under high pressure reaches the section of the housing interior immediately adjacent to the rear pipe end. There it acts primarily on the housing walls, but also on the closure and other parts. This bulges the housing.
- the closure, its buffer or stop device arranged at the rear end of its movement path, and other parts can also be damaged. Above all, the shooter may be injured.
- the firearm mentioned at the outset is further developed as follows: the section of the inside of the weapon housing which immediately adjoins the rear tube end is connected to the ambient air via at least one gas duct (which extends from this section) to the front. Via this gas channel, any pressure that may arise in the interior of the housing in the event of a malfunction is diverted to the front or prevented from reaching a dangerous height by the constant diversion.
- the firearm according to the invention can thus withstand an interference of the above-mentioned type at least so well without accepting an undue increase in weight and costs and without danger to the shooter that it remains usable.
- a firearm with an additional gas channel in the area of the rear tube end is already known (EP 0 148 984 BL - HECKLER & KOCH), which extends forward, opens at one end into the interior of a silencer and ultimately via it communicates with the ambient air.
- this gas channel serves to lower the muzzle velocity of the projectile below the sound limit. For this purpose, it passes through the wall of the tube with its other end and thereby releases part of the combustion gas generated when a high-speed cartridge is fired.
- DE 31 31 265 Cl - HECKLER & KOCH and DE-PS 576 518 - RHEI ⁇ NISCHE show additional gas channels, which, however, are also arranged differently and serve a different purpose.
- the gas channels of the object of the invention do not extend radially, but essentially parallel to the longitudinal direction of the core axis, that is to say forward. You can then end up in an area protected from pollution.
- the inlet openings of such channels can be closer to the cartridge chamber than the inlet openings of radial housing wall bores, which would otherwise also weaken the housing wall.
- the invention has the advantage of increased pipe cooling as a result of the gas channels which extend forward and are connected to the ambient air.
- This increases the self-ignition limit, also called cook-off.
- the self-ignition limit will be reached later than before. In other words, more shots than before can be fired safely.
- the cooling effect caused by the gas channels according to the invention is additionally promoted by the pumping action of the reciprocating closure.
- the breech pumps cooling air along the pipe end with every shot. Otherwise, the side walls of the gas channels act like cooling fins.
- the gas channels penetrate the intermediate piece or the transition region between the tube and the housing wall or intermediate piece and are designed as longitudinal grooves in the outer circumference of the tube and / or as longitudinal recesses in the inner bore of the housing or the intermediate piece (claims 2 and 3).
- the particular advantage of this embodiment is that the ends of the longitudinal channels are at the shortest possible distance from the rear end of the chamber from an area particularly high pressure lead to the front of the weapon. In this way, they discharge the gas before it has reached the housing wall.
- the front ends of the longitudinal channels end in an area of the weapon that is far less exposed to contamination than the outside of the housing.
- a pressurized gas relaxation space is provided, into which the front ends of the longitudinal channels open.
- the relaxation room is in turn connected to the ambient air via at least one compensation opening.
- the discharged compressed gases can relax in the relaxation room.
- it acts as a dirt trap to prevent dirt from penetrating into the weapon via the longitudinal channels (claim 4).
- the firearm is equipped as a long weapon with a forearm or handguard, the walls of which have cooling holes, and is designed such that the interior enclosed by the handguard and penetrated by the tube forms the relaxation space and the cooling holes serve as compensation openings (claim 5) .
- This embodiment does not require any additional weapon parts.
- the relaxation room is cleaned with the already necessary external and internal cleaning of the (removable) hand protection without a separate handle.
- At least one additional security hole is provided, which is guided radially outward from the section of the interior of the weapon housing adjacent to the rear tube end into a protected space.
- These additional radial holes also act as a safety valve for the case that the gas pressure equalization cannot take place quickly enough via the forward gas channels.
- the confluence of these radial bores in a protected space is intended to counteract the entry of dirt and, at the same time, to direct the pressure surge in such a way that the gunner, but also neighboring shooters, are not bothered by the escaping gas.
- the outputs of these radial bores are preferably covered, such that the cover only breaks open or comes loose when an overpressure limit is reached.
- a plastic which preferably also fills the radial bores, also serves to cover dirt.
- FIG. 1 shows a schematic, broken longitudinal section through the middle part of a rapid-fire rifle, which embodies a first exemplary embodiment of the invention
- FIG. 2 shows a cross section through the embodiment of FIG. 1 along the line II-II, which, however, has been modified to the extent that it shows the longitudinal grooves 26 'of FIG. 3 instead of the longitudinal recesses 26 of FIG. 1;
- FIG. 3 shows a schematic, broken-off longitudinal section through the middle part of a snow gun, similar to FIG. 1, but somewhat reduced, which embodies a second exemplary embodiment of the invention.
- the same reference symbols denote the same elements. The same elements are therefore only described once for all figures.
- a rapid-fire rifle 10 shown only in the detail has an essentially tubular, elongated housing 12 made of thin-walled sheet metal, which encloses a movement path for a locked or delayed breech (not shown).
- an intermediate piece 14 which is formed from two sleeves which enclose a bore, the axis of which is aligned with the path of movement of the closure.
- a pipe 16 is fastened in the front bore end.
- the housing 12 is extended to the front by a hollow, also approximately tubular hand guard 18 made of sheet metal, plastic or wood.
- the hand guard 18 surrounds the tube 16 at a good distance and has a number of cooling holes 20 in its top, bottom and front.
- the front hand protection end encloses the tube 16.
- a gas space 24 directly adjoins the rear tube end 22, which forms the front end of the movement path of the closure and is delimited to the side by the walls of the housing 12. Gas can enter this gas space, for example when the gas pressure in the tube 16 rises to such an extent through an obstacle there that the cartridge case and thus the breech already move to the rear before the pressure in the tube 16 reaches an acceptable level Measure has dropped. In this case, the cartridge sleeve emerging from the cartridge chamber of the tube 16 bursts and compressed gas exits into the gas space 24.
- a defective (overloaded) cartridge, a cartridge that was prematurely ignited by the closing seal by means of a foreign body or by the heat of the cartridge chamber, or another malfunction (such as a capsule tear) can lead to the build-up of excess pressure in the gas space 24.
- the exemplary embodiments shown correspond to conventional rapid-fire guns.
- the gas space 24 is connected to the inner space 28 of the hand guard 18 by several gas channels 26 (FIG. 1) or 26 ′ (FIG. 3). A pressure that destroys the weapon 10 cannot build up at all.
- the gas channels are either longitudinal cutouts 26 in the longitudinal bore of the intermediate piece 14 (exemplary embodiment in FIG. 1) or longitudinal grooves 26 'in the outer wall of the rear pipe end 22 seated in the intermediate piece 14 (embodiment in FIG. 3). Both types of longitudinal recesses or longitudinal grooves 26, 26 'can also be provided together on one weapon.
- FIG. 1 and 2 illustrate yet another variant of the invention.
- Additional safety bores 30 lead radially outward from the section of the weapon housing interior adjoining the rear tube end 22, in particular into a protected space 34. These radial bores 30 act as an additional safety valve in the event that a gas pressure equalization that may be required is not quick enough can take place via the forward-facing gas channels 26.
- the protected space 34 counteracts the entry of dirt into the interior of the housing. At the same time, he directs any pressure surge so that the gunner or neighboring shooter who is using the weapon is not bothered by the escaping gas.
- Plastic fillings 36 which fill the safety bores 30, offer further protection.
- the safety bores 30 are covered by a plastic cover 32.
- the plastic cover 32 is designed such that it does not break open until a pressure threshold value is reached.
- a single safety bore 30 is sufficient, namely that towards the ground, i.e. downward, radial bore.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Toys (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Safety Valves (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Telescopes (AREA)
- Emergency Lowering Means (AREA)
- Bedding Items (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4228072 | 1992-08-24 | ||
DE4228072A DE4228072C1 (en) | 1992-08-24 | 1992-08-24 | Firearm |
PCT/EP1993/002152 WO1994004881A1 (en) | 1992-08-24 | 1993-08-12 | Firearm |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0621941A1 true EP0621941A1 (en) | 1994-11-02 |
EP0621941B1 EP0621941B1 (en) | 1997-07-09 |
Family
ID=6466287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94908175A Expired - Lifetime EP0621941B1 (en) | 1992-08-24 | 1993-08-12 | Firearm |
Country Status (10)
Country | Link |
---|---|
US (1) | US5475940A (en) |
EP (1) | EP0621941B1 (en) |
JP (1) | JP2596525B2 (en) |
KR (1) | KR0132612B1 (en) |
AT (1) | ATE155236T1 (en) |
CA (1) | CA2120913C (en) |
DE (2) | DE4228072C1 (en) |
DK (1) | DK0621941T3 (en) |
ES (1) | ES2105654T3 (en) |
WO (1) | WO1994004881A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5768818A (en) * | 1997-02-10 | 1998-06-23 | Rustick; Joseph M. | Attachment for affixation to the barrel of a gas operated weapon |
US6098224A (en) * | 1998-10-02 | 2000-08-08 | Simmons Company | Pillow top mattress assemblies |
US7036260B2 (en) * | 2002-08-01 | 2006-05-02 | Robert Gee | Method and system to prevent firing live rounds of ammunition during miles exercises |
US9395135B2 (en) * | 2014-02-28 | 2016-07-19 | Robert S. Randazzo | Firearm barrel assembly with ported chamber |
US20190078851A1 (en) * | 2017-08-16 | 2019-03-14 | Alan Aldophsen | Weapon system modification directed to short stroke piston assembly |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE516339A (en) * | ||||
DE576518C (en) * | 1931-01-09 | 1933-05-11 | Rheinische Metallw & Maschf | Firearm with device for changing the initial speed of the projectile by diverting part of the propellant gases |
FR807519A (en) * | 1935-10-02 | 1937-01-14 | Silent and anti-recoil device for firearms | |
FR1210602A (en) * | 1946-07-24 | 1960-03-09 | Tech De Rech S Ind & Mecanique | Device for stabilizing gun carriages |
US2816484A (en) * | 1951-08-27 | 1957-12-17 | Richard R Grages | Automatic firearm of the blow back type |
CH480607A (en) * | 1969-01-20 | 1969-10-31 | Haemmerli Ag | Semi-automatic rapid fire pistol with gas escape openings in the barrel wall |
DE3131265C1 (en) * | 1981-08-07 | 1983-04-07 | Heckler & Koch Gmbh, 7238 Oberndorf | Muffled handgun |
EP0148984B1 (en) * | 1983-07-15 | 1988-06-08 | Heckler & Koch GmbH | Small arm with radially bored-through barrel and detachable silencer |
-
1992
- 1992-08-24 DE DE4228072A patent/DE4228072C1/en not_active Expired - Fee Related
-
1993
- 1993-08-12 ES ES94908175T patent/ES2105654T3/en not_active Expired - Lifetime
- 1993-08-12 US US08/211,363 patent/US5475940A/en not_active Expired - Lifetime
- 1993-08-12 CA CA002120913A patent/CA2120913C/en not_active Expired - Lifetime
- 1993-08-12 AT AT94908175T patent/ATE155236T1/en active
- 1993-08-12 EP EP94908175A patent/EP0621941B1/en not_active Expired - Lifetime
- 1993-08-12 JP JP6505874A patent/JP2596525B2/en not_active Expired - Lifetime
- 1993-08-12 WO PCT/EP1993/002152 patent/WO1994004881A1/en active IP Right Grant
- 1993-08-12 DE DE59306885T patent/DE59306885D1/en not_active Expired - Lifetime
- 1993-08-12 KR KR1019940701325A patent/KR0132612B1/en active
- 1993-08-12 DK DK94908175.6T patent/DK0621941T3/en active
Non-Patent Citations (1)
Title |
---|
See references of WO9404881A1 * |
Also Published As
Publication number | Publication date |
---|---|
US5475940A (en) | 1995-12-19 |
CA2120913C (en) | 1999-11-16 |
DE59306885D1 (en) | 1997-08-14 |
CA2120913A1 (en) | 1994-03-03 |
WO1994004881A1 (en) | 1994-03-03 |
ES2105654T3 (en) | 1997-10-16 |
JPH06511548A (en) | 1994-12-22 |
KR0132612B1 (en) | 1998-04-23 |
EP0621941B1 (en) | 1997-07-09 |
JP2596525B2 (en) | 1997-04-02 |
DK0621941T3 (en) | 1997-12-29 |
DE4228072C1 (en) | 1993-12-16 |
ATE155236T1 (en) | 1997-07-15 |
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