PROJECTILE

• US 3,738,272 A
• Filed: 04/13/1971
• Issued: 06/12/1973
• Est. Priority Date: 04/13/1971
• Status: Expired due to Term

• Current Assignee: Gregory Grosbard
• Original Assignee: Gregory Grosbard
• Inventors: Grosbard, Gregory
• Primary Examiner(s): Stahl, Robert F.
• Application Number:
  US05/133,665
• Time in Patent Office: 791 Days
• Field of Search: 102/49.1-49.7,34T,38,40,45
• US Class Current: 102/376
• CPC Class Codes: F42B 5/10 with self-propelled bullet

Abstract

An ammunition round having an adapter casing retained within the breech end of a gun barrel and a projectile held within the casing. A rear tubular portion of the projectile is made of thin sheet material and double walled to enclose a propellant charge about a firing pin extending into engagement with a primer located between the recessed nose of the tubular portion and a partition in the forward housing portion of the projectile separating the primer from the warhead.

Claims

1. For use with a firearm barrel having a breech end from which a cartridge is adapted to be ejected after discharge of a projectile forwardly therefrom, the combination of a casing adapted to occupy the space normally occupied by the cartridge and a projectile assembly separable from the casing comprising a forward housing portion abutting the casing, a double walled tubular member secured to the forward housing portion and projecting rearwardly therefrom through the casing, said tubular member having a deformable outer wall, an inner wall and a nose portion interconnecting the inner and outer walls witHin the forward housing portion, a primer enclosed between the nose portion and the forward housing portion axially spaced from the casing, a firing pin enclosed by the inner wall and extending through the tubular member into engagement with the primer, and a propellant charge enclosed between the inner and outer walls, said outer wall having a rear end closure portion sealing the propellant charge within the tubular member.

2. The combination of claim 1 wherein the nose portion is recessed and formed with at least one ignition aperture establishing communication between the primer and the propellant charge.

3. The combination of claim 2 wherein the tubular member is an integral configuration of sheet material having rearward terminal edges adapted to be positioned adjacent the breech end of the barrel, said closure portion of the outer wall converging rearwardly toward the inner wall so that the terminal edges engage each other to seal the propellant charge.

4. The combination of claim 3 wherein the casing is internally provided with fin-forming die recesses into which the outer wall of the tubular member is deformed in response to detonation of the propellant charge and forward discharge of the projectile assembly.

5. The combination of claim 4 wherein the casing includes a rear flange having a tool receiving notch and an ejector disabling notch angularly spaced from the tool receiving notch.

6. The combination of claim 1 wherein the tubular member is an integral configuration of sheet material having rearward terminal edges adapted to be positioned adjacent the breech end of the barrel, said closure portion of the outer wall converging rearwardly toward the inner wall so that the terminal edges engage each other to seal the propellant charge.

7. The combination of claim 6 wherein the closure portion is formed with axially extending slits opening at the terminal edge thereof.

8. The combination of claim 7 wherein said slits are helical shaped.

9. The combination of claim 8 wherein the adapter casing is internally provided with fin-forming die recesses into which the outer wall of the tubular member is deformed in response to detonation of the propellant charge and forward discharge of the projectile assembly.

10. The combination of claim 1 wherein the adapter casing is internally provided with fin-forming die recesses into which the outer wall of the tubular member is deformed in response to detonation of the propellant charge and forward discharge of the projectile assembly.

11. In combination with a casing, a projectile assembly separable from the casing comprising a forward housing portion, an integral double walled tubular member secured to the forward housing portion and projecting rearwardly therefrom, said tubular member having a deformable outer wall, an inner wall and a nose portion interconnecting the inner and outer walls within the forward housing portion, a primer enclosed between the nose portion and the forward housing portion, and a propellant charge enclosed between the inner and outer walls, said outer wall having a rear end closure portion sealing the propellant charge within the tubular member.

12. The combination of claim 11 wherein the tubular member is an integral configuration of sheet material having rearward terminal edges, said closure portion of the outer wall converging rearwardly toward the inner wall so that the terminal edges engage each other to seal the propellant charge.

13. The combination of claim 11 wherein the casing is internally provided with fin-forming die recesses into which the outer wall of the tubular member is deformed in response to detonation of the propellant charge and forward discharge of the projectile assembly.

14. The combination of claim 11 wherein the closure portion is formed with axially extending slits opening at the terminal edge thereof.

15. The combination of claim 11 wherein the forward housing portion includes an internal partition against which the nose portion of tHe tubular member abuts to form an ignition chamber for the primer.

16. The combination of claim 11 including a body of solid rocket fuel mounted within the nose portion of the tubular member.

17. In combination with a casing adapted to be positioned within a launching device, a projectile adapted to be separated from the casing when launched, comprising a nose section and a propelling section extending rearwardly from the nose section into the casing, said propelling section including an outer deformable wall enclosing a cavity, a body of propellant in said cavity, means for igniting said propellant to displace the projectile from the casing and means formed internally of the casing for deforming the outer wall into a stabilizer formation in response to displacement of the projectile from the casing.

18. The combination of claim 17 wherein the outer wall includes outwardly deformed closure means for sealing the propellant within the propelling section.