WO2008090385A1 - Method for increasing the muzzle velocity of a bullet in a rifle-bore weapon and a barrel of the abramian's rifle-bore weapon - Google Patents
Method for increasing the muzzle velocity of a bullet in a rifle-bore weapon and a barrel of the abramian's rifle-bore weapon Download PDFInfo
- Publication number
- WO2008090385A1 WO2008090385A1 PCT/GE2008/000002 GE2008000002W WO2008090385A1 WO 2008090385 A1 WO2008090385 A1 WO 2008090385A1 GE 2008000002 W GE2008000002 W GE 2008000002W WO 2008090385 A1 WO2008090385 A1 WO 2008090385A1
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- WO
- WIPO (PCT)
- Prior art keywords
- grooves
- bullet
- gaps
- barrel
- section
- 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.)
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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
- F41A21/16—Barrels or gun tubes characterised by the shape of the bore
- F41A21/18—Grooves-Rifling
-
- 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
Definitions
- the present invention pertains to rifle-bore small arms weapons and more particularly to improvements in quality of rifle-bore small arms weapons. Though, it can find application in artillery as well.
- a method for increasing the muzzle velocity of a bullet is known, providing for the lengthening the barrel and, respectively, increasing in the duration of pressure of gunpowder gasses onto a bullet when it is being discharged.
- the method suffers from a disadvantage in that it becomes less convenient for an individual who is holding the small arm weapon, due to increase in mass and length of the later.
- a barrel of Mossin's rifle-bore weapon - rifle of 1991/1910 type is known, having: bore - 7, 62 mm; length of the rifle without a bayonet - 13043mm; mass - 4,2 kg; muzzle velocity of a bullet - 88m/s; and Mossin's rifle of 1991/1930 type having: bore - 7.62mm, length of rifle without a bayonet - 1227mm; mass - 3.8kg; muzzle velocity of a bullet - 865 m/s (3).
- the elongation of the rifle barrel 1991/1910 causes increase in mass of a weapon, apart from the muzzle velocity, which can be considered a disadvantage for a small-arm weapon.
- Kalashnikov's machine gun AK-74 having: bore - 5.45mm, barrel length - 400mm, mass - 3.23 kg; muzzle velocity of a bullet - 885m/s, bullet weight - 3.4g, which increases in the muzzle velocity of a bullet as compared with that of Kalashnikov machine gun
- AKM having: bore - 7.62mm, barrel length - 415mm, mass - 3.2 kg; muzzle velocity of a bullet -
- Technical result of the present invention is: increase in muzzle velocity of a bullet in a rifle-bore weapon without changing the bore, the barrel length, the gunpowder charge mass, and the bullet mass; decrease in recoil of a weapon and loudness of discharge and increase in battle close-grouping.
- Essence of the present invention is method for increasing the muzzle velocity of a bullet in a rifle- bore weapon, comprising the increase in resultant force that imparts translational motion to a bullet in the barrel channel of the rifle-bore weapon, wherein the resultant force is increased by: decreasing in the head resistance force of the air existing in the barrel channel ahead of the bullet via migrating it into the rear space of the projectile through longitudinal and/or longitudinally inclined grooves and/or gaps between the obturating surface of the bullet and the wall of the barrel channel, the grooves and/or gaps being formed by the rifling grooves by increasing the cross-section area of the rifling grooves or of the part of the rifling grooves, the grooves and/or gaps being made in regions between the rifling grooves; decreasing in the friction force thanks to the existence of said grooves or gaps which reduce the friction surface between the bullet and the barrel channel; and retarding the pressure drop in the rear space of the projectile due to entering therein of the compressed air from the barrel channel; wherein,
- a barrel of a rifle-bore weapon comprises: discontinuous longitudinal grooves and/or discontinuous longitudinally inclined grooves made on the interior surface of the barrel channel in the regions between the rifling grooves; and/or discontinuous and/or continuous gaps made between the obturating surface of a bullet and the wall of the barrel channel; the gaps being formed by the rifling grooves, all of the rifling grooves or the part of the rifling grooves having increased cross-sectional areas; lengths of said discontinuous grooves or gaps being less than that of the obturating section of the lateral surface of the bullet; and said discontinuous grooves or gaps being made after the section of the barrel channel, whereon the initial diameter of the obturating lateral surface is reduced up to the diameter of the barrel channel between the regions upon fitting of the bullet in the rifling grooves,
- the grooves and gaps are designed for migrating the compressed air through them from the barrel channel located ahead of the bullet towards the rear space of the projectile. At the same time, they provide decrease in the friction force between the bullet and the wall of the barrel channel.
- the arrowy top of the bullet pushes the air towards its base in the process of displacement of the bullet in the barrel channel, the part of the air being forced into the grooves and/or gaps alongside to which the base of the bullet top comes this moment. The forcing significantly intensifies upon gaining the supersonic velocity by the bullet.
- fig. 1 depicts the longitudinal sectional view of the barrel section in the rifle-bore weapon, having discontinuous gaps on the rifling grooves section
- fig.2 depicts cross-sectional view A-A of the section shown inn fig.l
- fig.3 depicts cross-sectional view B-B of the section shown in the fig.l
- fig.4 depicts longitudinal sectional view of the barrel section in the rifle-bore weapon with discontinuous grooves
- fig.5 depicts cross-sectional view A-A of the section shown in fig.4
- the barrel of the rifle-bore weapon wherein discontinuous longitudinal and/or discontinuous longitudinally inclined and/or continuous longitudinally inclined grooves 5 are provided in the regions 3 between the rifling grooves 4, and/or discontinuous and/or continuous gaps 6 are provided between the obturating surface 7 of a bullet 8 and the wall of the barrel 1 channel, formed by rifling grooves with increased cross-section 9 area in
- the present method is performed as follows: at the beginning of displacement of the bullet 8 in the barrel 1 channel of the rifle-bore weapon, the air 11 existing ahead of the bullet 8 is compressed and is forced into the discontinuous grooves 5 and/or gaps 6 by means of the bullet top 10. After gaining the supersonic velocity by the bullet 8, the compression rate abruptly increases.
- Displacement of the air existing ahead of the bullet towards the rear space of the projectile favors decrease in its resistance to the motion of the bullet, and retardation of pressure drop in rear space of the projectile, thereby causing increase in muzzle velocity of a bullet and closely-grouping in battle as well as reduction of recoiling of a rifle bore weapon and decrease in loudness of discharge.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Continuous Casting (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
The present invention pertains to rifle-bore small arms weapons, and more particularly to improvements in performance of rifle-bore small arms weapons. Though, it can find application in artillery as well. Technical result of the present invention is: increase in muzzle velocity of a bullet (8) in a rifle-bore weapon without changing the bore, the barrel length, the gunpowder charge mass, and the bullet mass; decrease in recoil of a weapon and loudness of- discharge and increase in battle close -grouping. Essence of the present invention is migration of the compressed air 'ballistic wave' into the rear space of the projectile (8) through grooves (5) or gaps (6) made in the walls of the barrel channel in the discharging process, and, thereby, increase in the resultant force imparting the translational motion to. the bullet (8) in. the barrel channel of the. weapon at the expense of decrease in the head resistance of the air, retardation of the pressure drop in the rear space of the projectile, and decrease in the friction force between the bullet (8) and the wall of the barrel channel.
Description
Method for Increasing the Muzzle Velocity of a Bullet in a Rifle-bore Weapon and a Barrel of the Abramian's Rifle-bore Weapon
The present invention pertains to rifle-bore small arms weapons and more particularly to improvements in quality of rifle-bore small arms weapons. Though, it can find application in artillery as well.
A method for increasing the muzzle velocity of a bullet is known, providing for the lengthening the barrel and, respectively, increasing in the duration of pressure of gunpowder gasses onto a bullet when it is being discharged. (1) The method suffers from a disadvantage in that it becomes less convenient for an individual who is holding the small arm weapon, due to increase in mass and length of the later.
There is also known a method for increasing a muzzle velocity of a bullet in a rifle-bore weapon providing for increase in the gunpowder mass and, thereby, increasing in the resultant force imparting the forward movement to the bullet. The method also suffers from a disadvantage in that it increases expenditure of gunpowder, pressure of gunpowder gasses as well as recoil of a weapon.
A barrel of Mossin's rifle-bore weapon - rifle of 1991/1910 type is known, having: bore - 7, 62 mm; length of the rifle without a bayonet - 13043mm; mass - 4,2 kg; muzzle velocity of a bullet - 88m/s; and Mossin's rifle of 1991/1930 type having: bore - 7.62mm, length of rifle without a bayonet - 1227mm; mass - 3.8kg; muzzle velocity of a bullet - 865 m/s (3). The elongation of the rifle barrel 1991/1910 causes increase in mass of a weapon, apart from the muzzle velocity, which can be considered a disadvantage for a small-arm weapon.
Known in the art is a barrel of Kalashnikov's machine gun AK-74 having: bore - 5.45mm, barrel length - 400mm, mass - 3.23 kg; muzzle velocity of a bullet - 885m/s, bullet weight - 3.4g, which increases in the muzzle velocity of a bullet as compared with that of Kalashnikov machine gun
AKM having: bore - 7.62mm, barrel length - 415mm, mass - 3.2 kg; muzzle velocity of a bullet -
700m/s, bullet weight - 7.9g; due to decrease in the barrel bore (4).
Decrease in the barrel bore in the machine gun A-74 increases in the muzzle velocity of a bullet (885m/s versus 700m/s), whereas the decrease in the mass of a bullet (3.4g. versus 7.9g) decreases probability of target destruction. Further increase in the muzzle velocity of a bullet by decrease in its bore leads to significant decreases in destruction capability of the weapon.
Technical result of the present invention is: increase in muzzle velocity of a bullet in a rifle-bore weapon without changing the bore, the barrel length, the gunpowder charge mass, and the bullet mass; decrease in recoil of a weapon and loudness of discharge and increase in battle close-grouping. Essence of the present invention is method for increasing the muzzle velocity of a bullet in a rifle- bore weapon, comprising the increase in resultant force that imparts translational motion to a bullet in the barrel channel of the rifle-bore weapon, wherein the resultant force is increased by:
decreasing in the head resistance force of the air existing in the barrel channel ahead of the bullet via migrating it into the rear space of the projectile through longitudinal and/or longitudinally inclined grooves and/or gaps between the obturating surface of the bullet and the wall of the barrel channel, the grooves and/or gaps being formed by the rifling grooves by increasing the cross-section area of the rifling grooves or of the part of the rifling grooves, the grooves and/or gaps being made in regions between the rifling grooves; decreasing in the friction force thanks to the existence of said grooves or gaps which reduce the friction surface between the bullet and the barrel channel; and retarding the pressure drop in the rear space of the projectile due to entering therein of the compressed air from the barrel channel; wherein, in the region of the barrel channel where the pressure of gunpowder gasses in the rear space of the projectile exceeds that of the compressed air in grooves or gaps at the base of the bullet top, migration of the compressed air into the rear space of the projectile is performed in portions, for which purposes: the compressed air is forced into the groove or gap by means of the arrowy bullet top before shutting the air passage by the use of discontinuous grooves or gaps having lengths less than that of the obturating section of the bullet lateral surface, and by provision of shutting/opening of the air passage from the barrel channel into the groove or grooves, or from the groove or gap into the rear space of the projectile by the obturating section of the lateral surface of the bullet during displacement of the latter in the barrel channel; the forcing of the air is ceased during shutting of the passage; and the air enters into the rear space of the projectile from the groove or gap after opening the passage between the groove or gap and the rear s[pace of the projectile; and in the region of the barrel channel, where the pressure of the gunpowder gasses is less than that of the compressed air in the groove or gap at the base of the bullet top, migration of the compressed air into the rear space of the projectile is performed in portions and/or by continuous forcing of the compressed air by the bullet top into the longitudinally inclined grooves or gaps; the discontinuous grooves and gaps being located after the section of the barrel channel, whereon the initial diameter of the obturating lateral surface is reduced up to the diameter of the barrel channel between the regions upon fitting of the bullet in the rifling grooves, and up to the point where the forcing of the compressed air stops to be forced into the grooves or gaps at the muzzle section by the bullet top; and the continuous longitudinally inclined grooves and gaps being located after the point where the bullet has gained supersonic velocity and up to the same point at the muzzle section where said discontinuous grooves or gaps are located; and wherein the cross-section areas of all of the grooves or gaps are constant or increase all the way of the barrel to the muzzle section.
The method for increasing the muzzle velocity of a bullet in a rifle-bore weapon in accordance with the present invention is performed in a barrel of a rifle-bore weapon described below. A barrel of a rifle-bore weapon comprises: discontinuous longitudinal grooves and/or discontinuous longitudinally inclined grooves made on the interior surface of the barrel channel in the regions between the rifling grooves; and/or discontinuous and/or continuous gaps made between the obturating surface of a bullet and the wall of the barrel channel; the gaps being formed by the rifling grooves, all of the rifling grooves or the part of the rifling grooves having increased cross-sectional areas; lengths of said discontinuous grooves or gaps being less than that of the obturating section of the lateral surface of the bullet; and said discontinuous grooves or gaps being made after the section of the barrel channel, whereon the initial diameter of the obturating lateral surface is reduced up to the diameter of the barrel channel between the regions upon fitting of the bullet in the rifling grooves, and up to the point where the forcing of the compressed air stops to be forced into the grooves or gaps at the muzzle section by the bullet top; and the continuous grooves and gaps being located after the point where the bullet has gained supersonic velocity and up to the same point at the muzzle section where said discontinuous grooves or gaps are located; and wherein the cross-section areas of all of the grooves or gaps are constant or increase all the way of the barrel, or along the part of the barrel, to the muzzle section.
The grooves and gaps are designed for migrating the compressed air through them from the barrel channel located ahead of the bullet towards the rear space of the projectile. At the same time, they provide decrease in the friction force between the bullet and the wall of the barrel channel. The arrowy top of the bullet pushes the air towards its base in the process of displacement of the bullet in the barrel channel, the part of the air being forced into the grooves and/or gaps alongside to which the base of the bullet top comes this moment. The forcing significantly intensifies upon gaining the supersonic velocity by the bullet.
The barrel of the rifle-bore weapon is presented in 5 figures, wherein: fig. 1 depicts the longitudinal sectional view of the barrel section in the rifle-bore weapon, having discontinuous gaps on the rifling grooves section; fig.2 depicts cross-sectional view A-A of the section shown inn fig.l; fig.3 depicts cross-sectional view B-B of the section shown in the fig.l; fig.4 depicts longitudinal sectional view of the barrel section in the rifle-bore weapon with discontinuous grooves; fig.5 depicts cross-sectional view A-A of the section shown in fig.4;
The barrel of the rifle-bore weapon wherein discontinuous longitudinal and/or discontinuous longitudinally inclined and/or continuous longitudinally inclined grooves 5 are provided in the regions 3 between the rifling grooves 4, and/or discontinuous and/or continuous gaps 6 are provided between the obturating surface 7 of a bullet 8 and the wall of the barrel 1 channel, formed by rifling grooves with increased cross-section 9 area in a part of the rifling grooves or on all of the rifling grooves 4, the length of the discontinuous grooves 5 or gaps 6 being less than that of the obturating section of the lateral surface 7 of the bullet, and being made after the portion of the barrel 1 channel whereon, in the discharging process when the bullet 8 fits into the rifling grooves, its initial diameter of the lateral surface 7 obturating portion decreases up to the diameter of the barrel 1 channel between the regions 3, and up to the point where the forcing of the compressed air 11 into the grooves 5 or gaps 6 in proximity to the muzzle section 12 by means of the bullet 8 top 10 terminates, and the continuous grooves 5 and gaps 6 are made from the point where the bullet gains supersonic velocity, and up to the same point in proximity to the muzzle section where the discontinuous grooves 5 and gaps 6 are made, wherein the cross-section areas of all of the grooves or of the part thereof, or the gaps 6 are constant or increasing towards the muzzle section 12. The rear space 13 of the projectile.
In the process of discharging a bullet from the rifle-bore weapon, the present method is performed as follows: at the beginning of displacement of the bullet 8 in the barrel 1 channel of the rifle-bore weapon, the air 11 existing ahead of the bullet 8 is compressed and is forced into the discontinuous grooves 5 and/or gaps 6 by means of the bullet top 10. After gaining the supersonic velocity by the bullet 8, the compression rate abruptly increases. In the layer of the air 11 abutting on the bullet 8, particles of the air moves with the speed which varies from the bullet displacement velocity up to the zero, and the vibration motion of the air particles caused by collision between the air and the bullet gives rise to acoustic waves which cannot overtake the bullet, but, instead, are superimposed to one another, so as to form intensively compressed air wave, i.e. ballistic wave. This contiguous layer of air is pushed downwards to the bullet base by means of the bullet top 10 upon gaining the supersonic velocity and before leaving the barrel channel.
In the barrel channel, when the base of the bullet top together with frontal border of the bullet obturating surface 7 abutted on the bullet comes alongside the point of origin of the discontinuous groove 5 and/or gap 6, the compressed air is forced into groove 5 and/or gap 6 by the bullet top. The forcing action is continued up to the moment where the bullet 8 obturating surface 7 completely covers the groove 5 and /or gap 6 and the air passage from the barrel channel into the groove and/or gap is shut.
During the further displacement of the bullet, when the rear border of the bullet obturating surface opens passage from the rear space 13 of the projectile to the discontinuous groove 5 and/or gap 6, the compressed air is moved from the groove and/or channel to the rear space of the projectile. This
time, breaking of gunpowder gasses through the groove and or gap from the rear space 5 of the projectile towards the barrel channel, i.e. towards the space ahead of the ballet, is prevented.
In the described weapon, wherein the pressure of the compressed air in the groove or gap may exceed that of the gunpowder gasses in the rear space of the projectile upon gaining the supersonic velocity by the ballet, all of the grooves and/or gaps, or at least part of them can be made continuous.
Displacement of the air existing ahead of the bullet towards the rear space of the projectile favors decrease in its resistance to the motion of the bullet, and retardation of pressure drop in rear space of the projectile, thereby causing increase in muzzle velocity of a bullet and closely-grouping in battle as well as reduction of recoiling of a rifle bore weapon and decrease in loudness of discharge.
Claims
1. A method for increasing the muzzle velocity of a bullet in a rifle-bore weapon, comprising the increase in resultant force that imparts translational motion to a bullet in the barrel channel of the rifle-bore weapon, characterized in that the resultant force is increased by: - decreasing in the head resistance force of the air existing in the barrel channel ahead of the bullet via migrating it into the rear space of the projectile through longitudinal and/or longitudinally inclined grooves and/or gaps between the obturating surface of the bullet and the wall of the barrel channel, the grooves and/or gaps being formed by the rifling grooves by increasing the cross-section area of the rifling grooves or of the part of the rifling grooves, the grooves and/or gaps being made in regions between the rifling grooves;
- decreasing in the friction force thanks to the existence of said grooves or gaps which reduce the friction surface between the bullet and the barrel channel; and
- retarding the pressure drop in the rear space of the projectile due to entering therein of the compressed air from the barrel channel; wherein, in the region of the barrel channel where the pressure of gunpowder gasses in the rear space of the projectile exceeds that of the compressed air in grooves or gaps at the base of the bullet top, migration of the compressed air into the rear space of the projectile is performed in portions, for which purposes:
- the compressed air is forced into the groove or gap by means of the arrowy bullet top before shutting the air passage by the use of discontinuous grooves or gaps having lengths less than that of the obturating section of the bullet lateral surface, and by provision of shutting/opening of the air passage from the barrel channel into the groove or grooves, or from the groove or gap into the rear space of the projectile by the obturating section of the lateral surface of the bullet during displacement of the latter in the barrel channel; - the forcing of the air is ceased during shutting of the passage; and
- the air enters into the rear space of the projectile from the groove or gap after opening the passage between the groove or gap and the rear space of the projectile; and in the region of the barrel channel, where the pressure of the gunpowder gasses is less than that of the compressed air in the groove or gap at the base of the bullet top, migration of the compressed air into the rear space of the projectile is performed in portions and/or by continuous forcing of the compressed air by the bullet top into the longitudinally inclined grooves or gaps; the discontinuous grooves and gaps being located after the section of the barrel channel, whereon the initial diameter of the obturating lateral surface is reduced up to the diameter of the barrel channel between the regions upon fitting of the bullet in the rifling grooves, and up to the point where the forcing of the compressed air stops to be forced into the grooves or gaps at the muzzle section by the bullet top; and the continuous longitudinally inclined grooves and gaps being located after the point where the bullet has gained supersonic velocity and up to the same point at the muzzle section where said discontinuous grooves or gaps are located; and wherein the cross-section areas of all of the grooves or gaps are constant or increase all the way of the barrel to the muzzle section.
2. A barrel of a rifle-bore weapon, characterized in that it comprises: discontinuous longitudinal grooves and/or discontinuous longitudinally inclined grooves made on the interior surface of the barrel channel in the regions between the rifling grooves; and/or discontinuous and/or continuous gaps made between the obturating surface of a bullet and the wall of the barrel channel; the gaps being formed by the rifling grooves, all of the rifling grooves or the part of the rifling grooves having increased cross-sectional areas; lengths of said discontinuous grooves or gaps being less than that of the obturating section of the lateral surface of the bullet; and said discontinuous grooves or gaps being made after the section of the barrel channel, whereon the initial diameter of the obturating lateral surface is reduced up to the diameter of the barrel channel between the regions upon fitting of the bullet in the rifling grooves, and up to the point where the forcing of the compressed air stops to be forced into the grooves or gaps at the muzzle section by the bullet top; and the continuous grooves and gaps being located after the point where the bullet has gained supersonic velocity and up to the same point at the muzzle section where said discontinuous grooves or gaps are located; and wherein the cross-section areas of all of the grooves or gaps are constant or increase all the way of the barrel, or along the part of the ban-el, to the muzzle section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GEAP2007009821 | 2007-01-23 | ||
| GEAP20079821A GEP20135741B (en) | 2007-01-23 | 2007-01-23 | Method of enhancing initial speed of bullet in rifled weapon and rifled weapon barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008090385A1 true WO2008090385A1 (en) | 2008-07-31 |
Family
ID=39493582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/GE2008/000002 Ceased WO2008090385A1 (en) | 2007-01-23 | 2008-01-22 | Method for increasing the muzzle velocity of a bullet in a rifle-bore weapon and a barrel of the abramian's rifle-bore weapon |
Country Status (2)
| Country | Link |
|---|---|
| GE (1) | GEP20135741B (en) |
| WO (1) | WO2008090385A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010086676A3 (en) * | 2009-01-30 | 2010-09-23 | КУКХАЛЕЙШВИЛИ Рати | Method for the all-round improvement of the military and operating characteristics of a rifled gun and a rifled gun barrel |
| RU2630263C2 (en) * | 2015-12-16 | 2017-09-06 | Николай Евгеньевич Староверов | Staroverov-4 mortar /versions/ |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US812140A (en) * | 1901-06-14 | 1906-02-06 | Perry E Kent | Gun-barrel for pistols, rifles, and ordnance. |
| FR2570175A1 (en) * | 1984-09-12 | 1986-03-14 | Jacquier Pierre | Compensating chamber or chambers. Device aimed at modifying the operating conditions of firearms |
| CH673524A5 (en) * | 1987-05-26 | 1990-03-15 | Amtrust Ag | Missile tube - has radial recesses in guide surface separated from each other in lengthwise direction |
| WO1997028413A1 (en) * | 1996-02-01 | 1997-08-07 | Ildar Ibragimov | Weapon barrel |
-
2007
- 2007-01-23 GE GEAP20079821A patent/GEP20135741B/en unknown
-
2008
- 2008-01-22 WO PCT/GE2008/000002 patent/WO2008090385A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US812140A (en) * | 1901-06-14 | 1906-02-06 | Perry E Kent | Gun-barrel for pistols, rifles, and ordnance. |
| FR2570175A1 (en) * | 1984-09-12 | 1986-03-14 | Jacquier Pierre | Compensating chamber or chambers. Device aimed at modifying the operating conditions of firearms |
| CH673524A5 (en) * | 1987-05-26 | 1990-03-15 | Amtrust Ag | Missile tube - has radial recesses in guide surface separated from each other in lengthwise direction |
| WO1997028413A1 (en) * | 1996-02-01 | 1997-08-07 | Ildar Ibragimov | Weapon barrel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010086676A3 (en) * | 2009-01-30 | 2010-09-23 | КУКХАЛЕЙШВИЛИ Рати | Method for the all-round improvement of the military and operating characteristics of a rifled gun and a rifled gun barrel |
| RU2486426C2 (en) * | 2009-01-30 | 2013-06-27 | Агаджанов Владимир Агасиевич | Method complex improvement of fire qualities of rifled gun and abramyan's rifled barrel for said gun |
| RU2630263C2 (en) * | 2015-12-16 | 2017-09-06 | Николай Евгеньевич Староверов | Staroverov-4 mortar /versions/ |
Also Published As
| Publication number | Publication date |
|---|---|
| GEP20135741B (en) | 2013-02-11 |
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Legal Events
| Date | Code | Title | Description |
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