Ammunition projectile extraction

Patent metadata

Field	Value
Publication number	US-12085371-B1
Application number	US-202318220446-A
Country	US
Kind code	B1
Filing date	Jul 11, 2023
Priority date	Jul 11, 2023
Publication date	Sep 10, 2024
Grant date	Sep 10, 2024

Abstract

An ammunition projectile puller includes a body with one or more jaws to engage the projectile. The jaws can generally displace axially or radially relative to an axis of a through opening, and/or rotate around an axis transverse to the through axis, all within a predetermined range of motion. The jaws obtain a reliable purchase on the projectile to facilitate the extraction. The extracted projectile is cleared from the puller by the insertion of the next projectile to be extracted. The device is thus self-locating, self-locking, self-clearing, tolerant of projectile variation, operable with different projectile types and calibers, reliable, and efficient.

First claim

The invention claimed is:

1. An ammunition projectile extraction device for removing a projectile from a cartridge case of a cartridge, the device comprising:
a body having a through hole therein, the through hole having a central defining axis thereof, the through hole further having a diameter restriction therein, the diameter restriction being dimensioned to engage a predetermined structure of the cartridge case and thereby limit the passage of the cartridge into the through hole;
a first extraction jaw having a first working edge facing towards the defining axis of the through hole for engaging a projectile;
the first extraction jaw being engaged with the body so as to permit the first extraction jaw to be displaceable relative to the body in an axial direction generally parallel with the defining axis of the through hole; and
the first extraction jaw further being engaged with the body to be displaceable relative to the body in a radial direction with respect to the defining axis of the through hole,
wherein at a maximum insertion of the cartridge into the through hole, the first working edge of the first extraction jaw can engage with the projectile of the cartridge, but not with the cartridge case.

2. The device according to claim 1 , wherein the first working edge is hardened.

3. The device according to claim 1 , further comprising:
the first working edge comprises hardened O-1 tool steel, high-speed steel, tungsten carbide, and/or a hardness-enhancing coating applied to any of them or another base material.

4. The device according to claim 1 , further comprising a first notch in the first working edge generally aligned with the defining axis.

5. The device according to claim 1 , further comprising:
a second extraction jaw having a second working edge facing towards the defining axis of the through hole.

6. The device according to claim 5 , further comprising the first and second extraction jaws being opposed to one another across the defining axis.

7. The device according to claim 5 , further comprising:
the first and second extraction jaws being among all extraction jaws of the device and further that all extraction jaws of the device are engaged with said body as part of a pattern that is spaced in azimuth around the defining axis.

8. The device according to claim 1 , further comprising: the first extraction jaw further being engaged with the body to be rotatable around an axis transverse to the defining axis, whereby the first working edge is translatable in a direction away from the body to be oriented in a direction at least partially away from the body.

9. The device according to claim 1 , further comprising:
a bias element biasing the first extraction jaw in one or more of a radially inward direction and an axially downward direction.

10. The device according to claim 1 , further comprising:
a shank connected to the body, the shank being adapted to mate with and be held by a reloading press of ammunition cartridges.

11. The device according to claim 1 , further comprising a slot in an upper surface of the body for receiving the first extraction jaw at least partially below and upper surface of the body.

12. An ammunition projectile extraction device for removing a projectile from a cartridge case of a cartridge, the device comprising:
a body having a through hole therein, the through hole having a central defining axis thereof;
a first pair of extraction jaws engaged with the body, the first pair of extraction jaws comprising first and second extraction jaws, the first and second extraction jaws each having respective first and second working edges facing towards the defining axis of the through hole for engaging a projectile;
the first and second extraction jaws being engaged with the body so as to permit the first and extraction jaws to be displaceable relative to the body in an axial direction generally parallel with the defining axis of the through hole; the first and second extraction jaws further being engaged with the body to further be displaceable relative to the body in a radial direction with respect to the defining axis of the through hole;
the first and second extraction jaws further being engaged with the body to be rotatable around an axis transverse to the defining axis, whereby the first working edge is translatable in a direction away from the body to be oriented in a direction at least partially away from the body; and
a bias element biasing at least one of the first and second extraction jaw in one or more of a radially inward direction and an axially downward direction.

13. The device according to claim 12 , wherein the first and second extraction jaws are each translatable in one or more of the axial direction relative to the body, the radial direction relative to the body, and rotatable around a lateral axis relative to the body, each of the first and second jaws movable independently of the other.

14. The device according to claim 12 , further comprising: the through hole having a diameter restriction therein, the diameter restriction being dimensioned to engage a predetermined structure of the cartridge case and thereby limit the passage of the cartridge into the through hole, wherein at a maximum insertion of the cartridge into the through hole, the first and second working edges of the first and second extraction jaws can engage with the projectile of the cartridge, but not with the cartridge case.

15. The device according to claim 12 , wherein the bias element is chosen from the group comprising a coil spring, a washer spring, a diaphragm spring, a leaf spring, a donut spring, and an elastic.

16. The device according to claim 12 , further comprising: a second pair of extraction jaws engaged with the body, the second pair of extraction jaws comprising a third and a fourth extraction jaw, the third and fourth extraction jaws each having respective third and fourth working edges facing towards the defining axis of the through hole.

17. The device according to claim 16 , further comprising: the third and fourth extraction jaws being engaged with the body so as to permit the third and fourth extraction jaws to be displaceable to the body in an axial direction generally parallel with the defining axis of the through hole; the third and fourth extraction jaws further being engaged with the body to be displaceable relative to the body in a radial direction with respect to the defining axis of the through hole; the third and fourth extraction jaws further being engaged with the body to be rotatable around an axis transverse to the defining axis, whereby the first working edge is translatable in a direction away from the body to be oriented in a direction at least partially away from the body; and a bias element biasing at least one of the third and fourth extraction jaw in one or more of a radially inward direction and an axially downward direction.

18. An ammunition projectile extraction device for removing a projectile from a cartridge case of a cartridge, the device comprising:
a body having a through hole therein, the through hole having a central defining axis thereof, the through hole further having a diameter restriction therein, the diameter restriction being dimensioned to engage a predetermined structure of the cartridge case and thereby limit the passage of the cartridge into the through hole;
a first extraction jaw having a first working edge facing towards the defining axis of the through hole for engaging a projectile;
the first extraction jaw being engaged with the body so as to permit the first

Assignees

• Us Gov Sec Army
• Us Army

Inventors

• Adams Kevin G

Classifications

• F42B33/06 Primary

  Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs ({F42B33/004 and} F42B33/04 take precedence; {elimination of undesirable components of explosives C06B21/0091}) · CPC title