Accession Number : ADD013241

Title :   Retainer for a Projectile Rotating Band.

Descriptive Note : Patent, Filed 23 Dec 81, patented 10 Apr 84,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Price, Abner B ; Burnley, William S , III

Report Date : 10 Apr 1984

Pagination or Media Count : 5

Abstract : This patent discusses a retainer for attaching a rotating band to a projectile during handling and ramming of the projectile. The retainer cooperates with a grove on the projectile and is discarded during firing of the projectile by the force of the charge. An interlocking double split ring forms the retainer with an outer ring having an L-shaped cross-section and an inner ring shaped to fit into the L-shape of the outer ring. Each ring is provided with a split or opening to allow for expansion of the ring over the projectile and into the projectile groove. The outer ring split may be cut at an angle of less than 90 deg. to minimize deflection of the outer ring. The inner and outer rings are assembled with their splits together and then clocked 180 deg. apart. The inner ring is then locked to the outer ring by a locking notch. Hoop stress of the outer ring prevents the inner ring from deflecting at the split such that the retainer is forced to behave as a continuous single ring.

Descriptors :   *PATENTS, PROJECTILES, RESTRAINT, BANDS(STRIPS)

Subject Categories : Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE