CPC F42B14/02

CPC F42B14/02 is a patent category for Driving bands; Rotating bands on a projectile which is to be launched from a gun barrel or torpedo tube or suchlike..

Driving band is explained at w:driving band:

A driving band or rotating band is a band of soft metal near the base of an artillery shell, often made of gilding metal, copper, or lead. When the shell is fired, the pressure of the propellant swages the metal into the rifling of the barrel and forms a gas seal; this seal prevents the gases from blowing past the shell and engages the barrel's rifling to spin-stabilize the shell.

The rotating band has three essential functions:[4]

• Center the rear end of the projectile in the gun barrel.
• Seal the bore to prevent burning powder gas from moving through the rifling grooves past the projectile.
• Engage with the rifling of the barrel to spin the projectile and stabilize its flight.

Aero-relevant category tree around F42B:

• CPC F42: Ammunition; blasting
  • CPC F42B: Explosive charges, e.g. for blasting, fireworks, or ammunition
    • CPC F42B14/00: Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
      • CPC F42B14/02: Driving bands; Rotating bands (F42B14/04 takes precedence)
      • CPC F42B14/06: Sub-calibre projectiles having sabots; Sabots therefor
        • CPC F42B14/064: Sabots enclosing the rear end of a kinetic energy projectile, i.e. having a closed disk shaped obturator base and petals extending forward from said base

References

This wiki has 1 patents in category "CPC F42B14/02".

Patents in category CPC F42B14/02

• Patent GB-1914-22286 (English title: Improvements in Pointed Projectiles for use with Ordnance, Inventors: John Herschel Hardcastle, Filing date: 1914-11-10)

Enclosing categories	CPC F42B, CPC F42B14/00
Subcategories
Keywords	Projectiles, missiles
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