Two-piece despin obturator

Details Two-piece despin obturator Two-piece despin obturator

1982-06-15

1985-11-12

Jordan, Charles T.

Ammunition and explosives

Projectiles

Composite

102524, 244 328, F42B 3100

Patent

active

045520712

ABSTRACT:
A two-piece despin obturator mounted on a forwardly inclined obturator ramp on the projectile sidewall has a ring-shaped body of nylon-6 and a wiper band formed from Plascon nylon. The two-piece design is relatively immune to damage in the handling and loading process but yet the wiper band enhances low pressure sealing while the ring, driven up the inclined ramp in the firing process, engages the lands of the spiraled rifling. The rotational velocity imparted to the ring is partially coupled as the inner surface of the ring rotates on the obturator mount of the projectile.

REFERENCES:
patent: 1044360 (1912-11-01), Du Bois
patent: 1861522 (1932-06-01), Brandt
patent: 3143074 (1964-08-01), Jasse
patent: 3613596 (1971-10-01), Walde
patent: 3744426 (1973-07-01), Butler
patent: 3834314 (1974-09-01), Young
patent: 4242961 (1981-01-01), Moredock

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