PROJECTILE WITH A LOOSE HARD CORE

• US 3,795,196 A
• Filed: 12/27/1972
• Issued: 03/05/1974
• Est. Priority Date: 12/27/1972
• Status: Expired due to Term

• Current Assignee: Hans Hillenbrand
• Original Assignee: Hans Hillenbrand
• Inventors: Hillenbrand, Hans
• Primary Examiner(s): Borchelt, Benjamin A.
• Assistant Examiner(s): Tudor, Harold
• Application Number:
  US05/318,997
• Time in Patent Office: 433 Days
• Field of Search: 102/52,93
• US Class Current: 102/518
• CPC Class Codes: F42B 12/06 with hard or heavy core; Kinetic energy penetrators F42B12/16, F42B12/74 take precedence

Abstract

In a projectile with a loose hard core therein the core is provided at its lower end face with at least one unevenness, such as a notch, a groove, a tooth or the like, so that upon firing the projectile the inner face at the bottom wall of the hollow body in which the core is loosely arranged, but secured against longitudinal displacement, will come into pressure engagement with said unevenness and will establish a coupling connection between the core and the hollow body so that the twisting movement of said body will be transmitted to said core.

Claims

1. A twist projectile particularly a sabot projectile for being propelled through a rifled gun barrel comprising:

a hollow shell having a tapered front end and a closed rear end with an axially elongate hollow chamber therein with a transversely extending chamber base;

said chamber base having a forwardly facing surface;

a core positioned within said chamber and being loosely mounted within said chamber so as to be free to have axial pressure movement within said chamber against said forwardly facing surface, said core being of a harder material than said shell and having a rear face forming a core base overlying said chamber base, said core and said hollow shell defining an interengageable projection and recess surfaces in the vicinity of said core base and said chamber base which are movable into coupling engagement as the shell is acceleratingly propelled through the gun barrel and to cause said projection to lock against said shell surface and the core to be rotated with the shell.

2. A projectile for being propelled through a rifled gun barrel constructed in accordance with claim 1:

wherein said projection is in the form of a radially extending tooth.

3. A projectile for being propelled through a rifled gun barrel constructed in accordance with claim 1:

wherein said projection is in the form of a plurality of radially extending teeth.

4. A projectile for being propelled through a rifled gun barrel constructed in accordance with claim 1:

wherein said projection is constructed by material removed from separated areas on the base of the core defining said projection therebetween.

5. A projectile for being propelled through a rifled gun barrel constructed in accordance with claim 1:

wherein said core has radially extending grooves formed in the base to provide a plurality of said projections.

6. A projectile for being propelled through a rifled gun barrel constructed in accordance with claim 1:

wherein the core is radially supported at axially spaced locations within said chamber.

7. A projectile for being propelled through a rifled gun barrel constructed in accordance with claim 1:

wherein the core is held centered at its base by a conical surface within the shell chamber.

8. A twist projectile with a hard core particularly a sabot projectile in which the hard core is concentrically and loosely arranged within a projectile jacket, comprising a hollow projectile jacket having an interior reCeiving space with a transversely extending bottom, a hard projectile core arranged within said projectile jacket and having a front pointed end and a rear substantially planar end loosely engaged on said bottom, holding means holding said projectile core within said receiving space at a spaced location from the forward end of said jacket, said projectile core and said jacket having surfaces bounding said rear planar end and said bottom respectively defining an interengageable projection and recess which upon firing become rearwardly interengaged in rotative coupling engagement whereby the spin of said projectile jacket is imparted to said projectile core.

9. A twist projectile according to claim 8, wherein said holding means holding said projectile core within said receiving space comprises at least one ring surrounding said projectile pointed end and extending between said projectile and said jacket.

10. A projectile according to claim 8, wherein said projectile jacket and said projectile core are complementarily tapered in the vicinity of the trailing portion of said projectile core to said bottom, said projectile jacket and said projectile core having at least one interengaged projection and recess in said tapered portion.