Sabot and projectile with improved coupling for better torque transfer

Abstract

A self-separating sabot-projectile assembly with a positive engaging attachment to eliminate rotational slippage between the sabot and projectile. The torque transmitting interface between the sabot and projectile consists of a geometric shaped depression in the rearward end surface of the projectile which mates with a matched projection of the sabot. The sabot projection is hollowed out to allow the charge pressure to aid in the engagement of the sabot and projectile.

Claims

1. A sabot-projectile assembly, comprising: a projectile with; a geometric shaped impression in a central region of a reward surface to accept a mating, central protrusion of the sabot a sabot with; a longitudinally slotted extended bore for receiving the projectile and easily releasing from the projectile; and a base having a geometric shaped protrusion that mates with the projectile and a hollowed pocket to allow the pressure from the exploding charge to enhance the engagement to the projectile for improved torque transmission.

2. A sabot-projectile assembly according to claim 1, where the geometric shaped pocket of the projectile, sabot protrusion, and sabot hollow pocket are pyramids.

3. A sabot-projectile assembly according to claim 1, where the geometric shaped pocket of the projectile, sabot protrusion, and/or sabot hollow pocket are a truncated pyramid.

4. A sabot-projectile assembly according to claim 1, where the projectile is made from a metallic material.

5. A sabot-projectile assembly according to claim 1, where the projectile is made from a polymeric material.

6. A sabot-projectile assembly according to claim 1, where the projectile is made from a metal-polymeric composite material.

7. A sabot-projectile assembly according to claim 1, where the sabot is made from a polymeric material.

8. A sabot-projectile assembly, comprising: a projectile with; a geometric shaped impression in the rearward surface to accept a mating protrusion of the sabot a one-piece sabot with; a longitudinally slotted extended bow for receiving the projectile and easily releasing from the projectile; and a base having a geometric shaped protrusion that mates with the projectile and a hollowed pocket to allow the pressure from the exploding charge to enhance the engagement to the projectile for improved torque transmission, where the geometric shaped impression of the projectile, sabot protrusion, and/or sabot hollow pocket have radii edges.

9. A sabot-projectile assembly, comprising: a projectile with; a geometric shaped impression in the rearward surface to accept a mating protrusion of the sabot a one-piece sabot with; a longitudinally slotted extended bore for receiving the projectile and easily releasing from the projectile; and a base having a geometric shaped protrusion that mates with the projectile and a hollowed pocket to allow the pressure from the exploding charge to enhance the engagement to the projectile for improved torque transmission, where the pyramid pocket of the projectile, sabot protrusion, and/or sabot hollow pocket have radii edges.

10. A sabot-projectile assembly according to claim 2, where the projectile is made from a metallic material.

11. A sabot-projectile assembly according to claim 2, where the projectile is made from a polymeric material.

12. A sabot-projectile assembly according to claim 2, where the projectile is made from a metal-polymeric composite material.

13. A sabot-projectile assembly according to claim 2, where the sabot is made from a polymeric material.

14. A sabot-projectile assembly according to claim 1, where the sabot is one-piece.

15. A sabot-projectile assembly according to claim 1, where the geometric shaped pocket of the projectile, sabot protrusion, and sabot hollow pocket include multiple facets.

16. A sabot-projectile assembly according to claim 15, where the facets of the pyramid pocket of the projectile, sabot protrusion, and/or sabot hollow pocket have radii edges.

17. A sabot-projectile assembly according to claim 1, where the geometric shaped pocket of the projectile, sabot protrusion, and sabot hollow pocket are pyramid shaped.

18. A sabot-projectile assembly according to claim 17, where the geometric shaped pocket of the projectile, sabot protrusion, and sabot hollow pocket include multiple facets.

19. A sabot-projectile assembly according to claim 17, where the pyramid shape facets of the pyramid pocket of the projectile, sabot protrusion, and/or sabot hollow pocket have radii edges.

20. A sabot-projectile assembly according to claim 2, where the geometric shaped pocket of the projectile, sabot protrusion, and sabot hollow pocket are pyramids that include multiple facets having radii edges.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a rear perspective view of the assembly of the present invention;

(2) FIG. 2 is an exploded rear perspective view of the assembly of the present invention;

(3) FIG. 3 is an exploded front perspective view of the assembly of the present invention;

(4) FIG. 4 is an isometric view of the present invention;

(5) FIG. 5 is an axial section view along A-A of FIG. 4;

(6) FIG. 6 is an exploded rear perspective view of an alternative design of the present invention;

(7) FIG. 7 is an axial section view along A-A of FIG. 4 of an alternative design of the present invention;

DESCRIPTION OF THE INVENTION

Detailed Description

(8) The assembly has a projectile with a geometric impression on the rearward end surface and a sabot with a geometrically mating protrusion on the inside lower surface of said sabot. The sabot protrusion is created such that the bottom surface of said protrusion is a hollow pocket of the same or different geometry offset by a wall thickness of the sabot. Furthermore the Sabot has longitudinal slots in the pocket that holds the projectile. These slots allow for easy separation of the sabot from the projectile once it leaves the barrel of the firearm. The geometric shape as described can be of any number of surfaces.

(9) Referring to FIG. 1, you can see the projectile 1 and sabot 2 in assembly. In FIG. 2 a pyramid shaped hollowed pocket 3 of the projectile 1 is clearly shown. Also shown in FIG. 2 are the longitudinal slots 4, a pyramid shaped impression 5 of sabot 2, and stepped pressure seal skirt 6. The pyramid shaped impression 5 is formed by plural, substantially planar facets as clearly illustrated in the drawings. The exploded front perspective view of the assembly in FIG. 3 shows the pyramid shaped protrusion 7 of sabot 2. The pyramid shaped protrusion 7 is formed by plural, substantially planar facets as clearly illustrated in the drawings. As will become apparent, the pyramid pocket 3 of projectile 1 and pyramid shaped protrusion 7 of the sabot mate upon assembly. The hollow pocket 5 on the bottom surface of sabot 2 being is shown as an offset pocked to the pyramid shaped protrusion 7. This hollow pocket allows the pressure of the exploding propellant to create positive coupling. This coupling creates positive engagement and zero slip between the sabot 2 and projectile 1 and thus will improve projectile down range accuracy. It should be noted that the pocket 5 does not need to be of the same geometric shape as protrusion 7. In FIG. 5 you can see the sabot wall 8 that creates the pyramid shaped protrusion 7 and pyramid shaped impression 5. Also in FIG. 5 is a hollow pocket 9 of projectile 1. Such hollow pockets are very common in modern projectiles and aid in the expansion of the projectile and in turn transferring of the projectile energy to the target. These pockets are sometimes left hollow or filled with a polymer. FIG. 6 shows an alternative geometric shaped pocket in the rearward end of the projectile 1 in the form of a truncated pyramid 10, i.e., the truncated pyramid shaped impression of the projectile is formed by plural, substantially planar facets as clearly illustrated in the drawings. Similarly you can see a truncated pyramid pocket 11 in the bottom surface of the Sabot 2, i.e., the truncated pyramid shaped protrusion of the sabot is formed by plural, substantially planar facets as clearly illustrated in the drawings. Also in FIG. 6 you can see radii edges 12 of the geometric shape. These radii edges can aid in the manufacturer of the assembly as well as aid in separation of the sabot from the projectile. In FIG. 7 you can see the truncated pyramid pocket 10 of the projectile, truncated pyramid pocket 11 of the sabot and the sabot wall 8 in section.

(10) Clearly, minor changes may be made in the shape and construction of the invention described without departing from the material spirit thereof. It is desired that the invention shown and described herein not be limited to its exact form, but allowed to include all such as properly come within the scope claimed.