US1395630A - Non-recoil gun - Google Patents
Non-recoil gun Download PDFInfo
- Publication number
- US1395630A US1395630A US424980A US42498020A US1395630A US 1395630 A US1395630 A US 1395630A US 424980 A US424980 A US 424980A US 42498020 A US42498020 A US 42498020A US 1395630 A US1395630 A US 1395630A
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- US
- United States
- Prior art keywords
- door
- gun body
- gun
- opening
- recoil
- 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.)
- Expired - Lifetime
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Classifications
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- 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
- F41A1/00—Missile propulsion characterised by the use of explosive or combustible propellant charges
- F41A1/08—Recoilless guns, i.e. guns having propulsion means producing no recoil
- F41A1/10—Recoilless guns, i.e. guns having propulsion means producing no recoil a counter projectile being used to balance recoil
Definitions
- My present invention relates to improvements in non-recoil guns of the general type known as the Davis non-recoil gun, and illustrated, for example, in my Patent No. 1,108,715, granted August 25, 1914, and entitled Apparatus for firlng pro ectiles from aircraft, and also in my Patent No.
- a gun body made of a single continuous tube which is provided with a hinged door at one side and near the central portion thereof, through which the loading of the projectile, the propelling charge and the counterweight is effected, together with means for firmly holding said door in place and for preventing the escape of gas when the propelling charge is ignited.
- Figure 1 is a perspective view of the improved gun, with the hinged door in the closed and locked position.
- Fig. 2 shows a central axial section through the gun body when loaded, the projectile and certainother parts being shown in elevation.
- Fig. 3 shows a section along the line 3-3 of Fig. 2, and looking in the direction of the arrows;
- Fig. 4 is a sectional view on a much larger scale showing'the means for locking the door in the closed position and for preventing the escape of gas.
- A represents the gun body which comprises a tube which may be either a single mass of metalas shown, or a built up structure as is well known in the ordnance art.
- This-tube may be of any suitable or desired length. Near the central portion this tube is provlded with an elongated opening A, at each end of which opening the tube is screw-threaded externall as at a' and a, and at one side of said opening the tube is provided with one or more hinge lugs 00 to which the correspondinghinge lugs 12 of the door B are pivotally connected as by means of the bolt C.
- the door B is also screw-threaded externally as at b to engage the internal screw threads on the screw collars D and D, each of which is preferably provided with an annular boss 03, which may be gripped by the hand of the operator, and thus the collar may be conveniently rotated from the looking to the unlocked position, or vice versa.
- the gun body Surrounding the opening A the gun body is provided with a groove a in which the body portion of the gas check E is mounted, the gas check being provided with a resilient lip e which projects into the groove adjacent the shoulder 12 of the door B, as shown in Fig. 4. This gas check thus effectually screens the joint between the door and the gun body and prevents the escape of gas when the prope ling charge is ignited, as when the gun is fired.
- the gun body Opposite the opening A the gun body is provided with a boss a, recessed to receive the hollow plug F, in which the electric primer G is secured, as shown in Fig. 2.
- This primer may be fired by any suitable electric firing apparatus such for instance, as is shown in my Patent l lo. 1,108,714, granted August 25, 1914 and entitled Aeroplane gun, and in my Patent No. 1,108,716 already referred to.
- the projectile H when loaded in the gun is held against falling out by any suitable stop, 'such as the pin 1, see Fig. 2.
- a counterweight K which may be held in place by the clamp screw L.
- the propelling charge may be put up in any suitable container well known in the art, and the arrangement of the projectile, propelling charge and the counterweight are all diagrammatically shown in Fig. 2, as the details swung to the open position, and the stop I to be in place, the projectile is loaded, as also the propelling charge and the counterweight, and the door is then closed and the screw collars screwed to the position shown in Figs. 1 and 2, firmly locking the door in place.
- the clamp screw L is now inserted, clamping the counterweight in position, and the primer G, being in place, the gun is ready to be fired.
- the gun body A formed of a comparatively short tube
- this tube may be very materially lengthened if desired.
- the tube should be of the desired thickness and strength to withstand the pressure of the propellingcharge and yet provide a suitable factor of safety against the bursting of the gun when it is fired. 4
- a non recoil gun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun body, and adapted to close said opening, and means for locking said door in place and for releasing same when desired, substantially as described.
- a non recoil gun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun body, and adapted to close said opening, and movable collars mounted over said gun body for locking said door in place and for releasing same when desired.
- a non recoil gun comprisin a tubular gun body open at both ends, an cut away body, and adapted to close said opening, a.
- a non recoil gun com risin a tubular gun body open at both en 5, an cut away at one side near its central re ion to form a loading opening, a door in t e form of a segment of a cyllnder hinged to said gun body, and adapted to close said opening, a gas check covering the joint between the edges of said door and said gun body when the door is in the closed and locked position, and movable collars mounted over said gun body for locking said door in place and for releasing same when desired.
- a non recoil gun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun body, and adapted to close said opening, a gas check covering the joint between the edges of said door and said gun body when the door is in the closed and locked position, external screw threads provided in said gun body and said door adjacent the upper and lower edges of'said openin and internally threaded screw collars a apted to engage said threads on said gun body a and on said door, and to lock said door in the closed position, or to release same when desired, substantially as described.
- a non recoil gun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door-in the form of a segment of a cylinder hinged to said gun body, and adapted to close said opening, a gas check having a body portion secured in a groove in said gun body and provided with a resilient lip covering the joint between the edges of said door and said gun body when the door is in the closed and locked position, and means for locking said door in place and for releasing same when. desired, substantially as described.
- a non recoil gun' comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun body, and adapted to close said opening, a gas check having a body portion secured in a' groove in said gun body and provided with a resilient lip covering the joint between. the edges of said door and said gun body when the door is in the closed and locked position, and movable collars 'firing device mounted in said mounted over said place and for releasing same when desired.
- a non recoil gun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said g'un body, and adapted to close said opening, a gas check having a body portion secured in a groove in said gun body and provided with a resilient lip covering the joint between the edges of said door and said gun body when the door is in the closed and locked position, external screw threads provided in said gun body' and said door adjacent the upper and lower edges of said opening, and internally threaded screw collars adapted to engage said threads on said gun body and on said door, and to lock said door in the closed position, or to release same when desired, substantially as described.
- a non recoil gun comprisin a tubular gun body open at both ends, an cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun body, and adapted to close saidopening, means for locking said door in place and for releasing same when desired, and a gun body opposite said door, substantially as described.
- a non recoilgun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun,
- a non recoil comprising a tubular gun body open at th ends, and cut away iii at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun body, and ada ted to close said opening, external screw tireads provided in said gun body and said door adjacent the upper and lower edges of said opening, internally threaded screw collars adapted to enga e said threads on said gun body and on sand door, and to lock said door in the closed position, or to release same when desired, and a firing device mounted in said gun body opposite said door, substantially as described.
- a non recoil gun comprising a tubular gun body open at both ends, and cut away -at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder mounted on said gun body, and adapted to close said opening, and means for locking said door in place and for releasing same when desired,.substantially as described.
- a non recoil gun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder mounted on said gun body, and adapted to close said opening, and movable collars mounted over said gun body for locking said door in place and for releasing same when desired.
- a non recoil 11 comprising a tubular gun body open at 0th ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a. cylinder mounted on said gun body,'and adapted to close said opening, ex-
- ternal screw threads provided in said gun body and said door adjacent the upper and lower edges of said opening, and internally threaded screw collars adapted to enga e said threads on said un body and on said door, and to lock said door in the closed position, or to release same when desired, substantially as described.
Description
C. DAVIS.
NON-RECOIL GUN.
APPLICATION FILED Nov. 18. I920.
1,395,630,. Patented Nov. 1, 1921.
PATENT OFFICE.
OLELAND DAVIS, 01 ENGLEWOOD CLIFFS, NEW JEBSEY.
NON-BECOIL GUN.
' Specification of Letter-patent.
Patented Nov. 1, 1921.
Application flled November 18, mo. Serial m. 424,980.
To an whom it may concern:
Be it" known that I, CLELAND DAVIS, a citizen of the United States, residing at Englewood Cliffs, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Non-Recoil Guns; and I do hereby declare the following to be a full, clear, and exact description of the inventlon, such as will enable othersskilled in the art to which 1t appertains to make and use the same.
My present invention relates to improvements in non-recoil guns of the general type known as the Davis non-recoil gun, and illustrated, for example, in my Patent No. 1,108,715, granted August 25, 1914, and entitled Apparatus for firlng pro ectiles from aircraft, and also in my Patent No.
1,108,716, also granted August 25, 1914, and
entitled Apparatus for firing projectiles from aircraft.
According to my present invention I provide a gun body made of a single continuous tube which is provided with a hinged door at one side and near the central portion thereof, through which the loading of the projectile, the propelling charge and the counterweight is effected, together with means for firmly holding said door in place and for preventing the escape of gas when the propelling charge is ignited.
My invention will be more fully understood after reference to the accompanying drawings, in which like parts are indicated by similar reference symbols throughout the several views, and in which Figure 1 is a perspective view of the improved gun, with the hinged door in the closed and locked position.
Fig. 2 shows a central axial section through the gun body when loaded, the projectile and certainother parts being shown in elevation.
Fig. 3 shows a section along the line 3-3 of Fig. 2, and looking in the direction of the arrows; and
Fig. 4 is a sectional view on a much larger scale showing'the means for locking the door in the closed position and for preventing the escape of gas.
A represents the gun body which comprises a tube which may be either a single mass of metalas shown, or a built up structure as is well known in the ordnance art.
This-tube may be of any suitable or desired length. Near the central portion this tube is provlded with an elongated opening A, at each end of which opening the tube is screw-threaded externall as at a' and a, and at one side of said opening the tube is provided with one or more hinge lugs 00 to which the correspondinghinge lugs 12 of the door B are pivotally connected as by means of the bolt C.
The door B is also screw-threaded externally as at b to engage the internal screw threads on the screw collars D and D, each of which is preferably provided with an annular boss 03, which may be gripped by the hand of the operator, and thus the collar may be conveniently rotated from the looking to the unlocked position, or vice versa. Surrounding the opening A the gun body is provided witha groove a in which the body portion of the gas check E is mounted, the gas check being provided with a resilient lip e which projects into the groove adjacent the shoulder 12 of the door B, as shown in Fig. 4. This gas check thus effectually screens the joint between the door and the gun body and prevents the escape of gas when the prope ling charge is ignited, as when the gun is fired.
Opposite the opening A the gun body is provided with a boss a, recessed to receive the hollow plug F, in which the electric primer G is secured, as shown in Fig. 2. This primer may be fired by any suitable electric firing apparatus such for instance, as is shown in my Patent l lo. 1,108,714, granted August 25, 1914 and entitled Aeroplane gun, and in my Patent No. 1,108,716 already referred to.
The projectile H when loaded in the gun is held against falling out by any suitable stop, 'such as the pin 1, see Fig. 2. Above the projectile the propelling charge J is placed, and above this. is a counterweight K which may be held in place by the clamp screw L. The propelling charge may be put up in any suitable container well known in the art, and the arrangement of the projectile, propelling charge and the counterweight are all diagrammatically shown in Fig. 2, as the details swung to the open position, and the stop I to be in place, the projectile is loaded, as also the propelling charge and the counterweight, and the door is then closed and the screw collars screwed to the position shown in Figs. 1 and 2, firmly locking the door in place. The clamp screw L is now inserted, clamping the counterweight in position, and the primer G, being in place, the gun is ready to be fired.
While I have shown the gun body A formed of a comparatively short tube, this tube may be very materially lengthened if desired. The tube, of course, should be of the desired thickness and strength to withstand the pressure of the propellingcharge and yet provide a suitable factor of safety against the bursting of the gun when it is fired. 4
I have illustrated my herein described device in a more or less diagrammatic way, and
' it will be obvious that various modifications might be made in the construction, combination and'arrangement of parts which could be used without departing from the spirit of my invention; and I do not mean to limit the invention to such details except as particularly pointed out in the claims.
Having thus described my invention what I claim and desire to secure byLetters Patent of the United States is g 1. A non recoil gun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun body, and adapted to close said opening, and means for locking said door in place and for releasing same when desired, substantially as described.
2. A non recoil gun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun body, and adapted to close said opening, and movable collars mounted over said gun body for locking said door in place and for releasing same when desired.
3. A non recoil gun com rising a tubular gun body open at both en s, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun body,-
and adapted to close said opening, external screw threads provided in said gun body and said door adjacent the upper and lower edges of said opening, and internally threaded screw cellars adapted to engage said threads on saidgun body and on said door, and to lock said door in the closed position, or to release same when desired, substantially as described. I
4. A non recoil gun comprisin a tubular gun body open at both ends, an cut away body, and adapted to close said opening, a.
gas check covering the joint between the edges of said door and said un body when the door is in the closed and ocked position, and means'for locking said door 1n place and for releasing same when desired, substantially as described.
5. A non recoil gun com risin a tubular gun body open at both en 5, an cut away at one side near its central re ion to form a loading opening, a door in t e form of a segment of a cyllnder hinged to said gun body, and adapted to close said opening, a gas check covering the joint between the edges of said door and said gun body when the door is in the closed and locked position, and movable collars mounted over said gun body for locking said door in place and for releasing same when desired.
'6. A non recoil gun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun body, and adapted to close said opening, a gas check covering the joint between the edges of said door and said gun body when the door is in the closed and locked position, external screw threads provided in said gun body and said door adjacent the upper and lower edges of'said openin and internally threaded screw collars a apted to engage said threads on said gun body a and on said door, and to lock said door in the closed position, or to release same when desired, substantially as described.
7. A non recoil gun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door-in the form of a segment of a cylinder hinged to said gun body, and adapted to close said opening, a gas check having a body portion secured in a groove in said gun body and provided with a resilient lip covering the joint between the edges of said door and said gun body when the door is in the closed and locked position, and means for locking said door in place and for releasing same when. desired, substantially as described.
8. A non recoil gun'comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun body, and adapted to close said opening, a gas check having a body portion secured in a' groove in said gun body and provided with a resilient lip covering the joint between. the edges of said door and said gun body when the door is in the closed and locked position, and movable collars 'firing device mounted in said mounted over said place and for releasing same when desired.
" 9. A non recoil gun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said g'un body, and adapted to close said opening, a gas check having a body portion secured in a groove in said gun body and provided with a resilient lip covering the joint between the edges of said door and said gun body when the door is in the closed and locked position, external screw threads provided in said gun body' and said door adjacent the upper and lower edges of said opening, and internally threaded screw collars adapted to engage said threads on said gun body and on said door, and to lock said door in the closed position, or to release same when desired, substantially as described.
10. A non recoil gun comprisin a tubular gun body open at both ends, an cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun body, and adapted to close saidopening, means for locking said door in place and for releasing same when desired, and a gun body opposite said door, substantially as described.
11. A non recoilgun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun,
body, and adapted to close said openlng, movable collars mounted over said gun body for locking said door in place and for releasing same when desired, and a. firing device mounted in said gun body opposite said door, substantially as described.
12. A non recoil comprising a tubular gun body open at th ends, and cut away iii at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder hinged to said gun body, and ada ted to close said opening, external screw tireads provided in said gun body and said door adjacent the upper and lower edges of said opening, internally threaded screw collars adapted to enga e said threads on said gun body and on sand door, and to lock said door in the closed position, or to release same when desired, and a firing device mounted in said gun body opposite said door, substantially as described.
13. A non recoil gun comprising a tubular gun body open at both ends, and cut away -at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder mounted on said gun body, and adapted to close said opening, and means for locking said door in place and for releasing same when desired,.substantially as described.
14. A non recoil gun comprising a tubular gun body open at both ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a cylinder mounted on said gun body, and adapted to close said opening, and movable collars mounted over said gun body for locking said door in place and for releasing same when desired.
15. A non recoil 11 comprising a tubular gun body open at 0th ends, and cut away at one side near its central region to form a loading opening, a door in the form of a segment of a. cylinder mounted on said gun body,'and adapted to close said opening, ex-
ternal screw threads provided in said gun body and said door adjacent the upper and lower edges of said opening, and internally threaded screw collars adapted to enga e said threads on said un body and on said door, and to lock said door in the closed position, or to release same when desired, substantially as described.
CLELAND DAVIS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US424980A US1395630A (en) | 1920-11-18 | 1920-11-18 | Non-recoil gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US424980A US1395630A (en) | 1920-11-18 | 1920-11-18 | Non-recoil gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1395630A true US1395630A (en) | 1921-11-01 |
Family
ID=23684659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US424980A Expired - Lifetime US1395630A (en) | 1920-11-18 | 1920-11-18 | Non-recoil gun |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1395630A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2429021A (en) * | 1945-03-15 | 1947-10-14 | Albert S Gould | Barrage rocket projector |
| US2504160A (en) * | 1944-10-03 | 1950-04-18 | Leslie A Skinner | Rocket projector |
| US2798413A (en) * | 1946-12-12 | 1957-07-09 | Kenneth R Fowler | Recoilless gun |
| DE1107129B (en) * | 1955-11-29 | 1961-05-18 | Latham Valentine Stewart Black | Shooting device with a front and rear barrel and an intermediate chamber |
| US3601061A (en) * | 1967-08-31 | 1971-08-24 | Trw Inc | Ammunition for high firing rate, light gas hypervelocity gun |
| US4012987A (en) * | 1975-09-03 | 1977-03-22 | The United States Of America As Represented By The Secretary Of The Army | Dual combustion missile system |
| US4126078A (en) * | 1976-07-20 | 1978-11-21 | General Electric Company | Liquid propellant weapon system |
| US6286408B1 (en) | 2000-01-04 | 2001-09-11 | The United States Of America As Represented By The Secretary Of The Navy | Energy-absorbing countermass assembly for recoilless weapons |
| US20060265927A1 (en) * | 2004-10-29 | 2006-11-30 | Lockheed Martin Corporation | Projectile accelerator and related vehicle and method |
| US7984581B2 (en) | 2004-10-29 | 2011-07-26 | Lockheed Martin Corporation | Projectile accelerator and related vehicle and method |
| WO2015102737A3 (en) * | 2013-10-21 | 2015-09-24 | Grant Kevin Paul | A method and device for improving countermass-based recoil control in projectile launchers |
| EP3091326A1 (en) | 2015-05-04 | 2016-11-09 | Anton Alexandrovich Shchukin | A recoilless gun |
| US10488127B2 (en) * | 2016-02-29 | 2019-11-26 | Nammo Talley, Inc. | Countermass propulsion system |
| US11035631B2 (en) | 2016-02-29 | 2021-06-15 | Nammo Defense Systems Inc. | Countermass liquid for a shoulder launched munition propulsion system |
| US11959711B1 (en) | 2021-10-15 | 2024-04-16 | The United States Of America As Represented By The Secretary Of The Army | Recoilless gun and ammunition |
-
1920
- 1920-11-18 US US424980A patent/US1395630A/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2504160A (en) * | 1944-10-03 | 1950-04-18 | Leslie A Skinner | Rocket projector |
| US2429021A (en) * | 1945-03-15 | 1947-10-14 | Albert S Gould | Barrage rocket projector |
| US2798413A (en) * | 1946-12-12 | 1957-07-09 | Kenneth R Fowler | Recoilless gun |
| DE1107129B (en) * | 1955-11-29 | 1961-05-18 | Latham Valentine Stewart Black | Shooting device with a front and rear barrel and an intermediate chamber |
| US3601061A (en) * | 1967-08-31 | 1971-08-24 | Trw Inc | Ammunition for high firing rate, light gas hypervelocity gun |
| US4012987A (en) * | 1975-09-03 | 1977-03-22 | The United States Of America As Represented By The Secretary Of The Army | Dual combustion missile system |
| US4126078A (en) * | 1976-07-20 | 1978-11-21 | General Electric Company | Liquid propellant weapon system |
| US6286408B1 (en) | 2000-01-04 | 2001-09-11 | The United States Of America As Represented By The Secretary Of The Navy | Energy-absorbing countermass assembly for recoilless weapons |
| US20060265927A1 (en) * | 2004-10-29 | 2006-11-30 | Lockheed Martin Corporation | Projectile accelerator and related vehicle and method |
| US7814696B2 (en) * | 2004-10-29 | 2010-10-19 | Lockheed Martin Corporation | Projectile accelerator and related vehicle and method |
| US7984581B2 (en) | 2004-10-29 | 2011-07-26 | Lockheed Martin Corporation | Projectile accelerator and related vehicle and method |
| WO2015102737A3 (en) * | 2013-10-21 | 2015-09-24 | Grant Kevin Paul | A method and device for improving countermass-based recoil control in projectile launchers |
| US9631882B2 (en) * | 2013-10-21 | 2017-04-25 | Kevin Paul Grant | Method and device for improving countermass-based recoil control in projectile launchers |
| EP3091326A1 (en) | 2015-05-04 | 2016-11-09 | Anton Alexandrovich Shchukin | A recoilless gun |
| US10488127B2 (en) * | 2016-02-29 | 2019-11-26 | Nammo Talley, Inc. | Countermass propulsion system |
| US11035631B2 (en) | 2016-02-29 | 2021-06-15 | Nammo Defense Systems Inc. | Countermass liquid for a shoulder launched munition propulsion system |
| US11959711B1 (en) | 2021-10-15 | 2024-04-16 | The United States Of America As Represented By The Secretary Of The Army | Recoilless gun and ammunition |
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