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ROTATING BAND FOR PROJECTILE

  • US 3,786,760 A
  • Filed: 06/01/1972
  • Issued: 01/22/1974
  • Est. Priority Date: 06/01/1972
  • Status: Expired due to Term
First Claim
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1. A projectile, a groove extending circumferentially of the exterior of the projectile, said groove being recessed below the surface of said projectile and having a generally cylindrical section extending circumferentially of projectile together with generally dovetailed fore and aft shoulder portions defining the sides of said groove, a plastic rotating band located in said groove and extending above the groove surface beyond the diameter of said projectile to engage gun rifling to obturate the propellant gases and to impart spin to the projectile during launch, said cylindrical section having a smooth aft surface covering approximately one half of said cylindrical section, a knurled portion located fowardly of said aft surface, and a shorter smooth surface located forwardly of the knurled surface.

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