Accession Number : ADD008309

Title :   Safe and Arming Device.

Descriptive Note : Patent,


Personal Author(s) : Farace,Louis P

Report Date : 05 Aug 1980

Pagination or Media Count : 8

Abstract : This patent discribes an improved safe and arming device for isolating the fuse from the main explosive charge in spin stabilized shells to prevent premature detonation of such shells. The improved safe and arming device comprises a housing adapted to be positioned intermediate of the fuse and the main explosive charge of such shells for rotation therewith about a shell spin axis when the shell is fired, a rotor mounted in the housing for rotation about a rotor axis, and a rotatable control member engageable with the rotor and being rotatable about an axis extending in the same direction as the rotor axis for controlling the rate of rotation of the rotor. The rotor is positionable in a desired start position and is adapted to rotate in response to rotation of the shell to an armed position to communicate a detonation signal from the fuse to the explosive charge. The rotatable control member carries an oscillatory member which is adapted to periodically move in one direction and then in a different direction in response to rotation of the rotatable control member so that the momentum of the oscillatory member is periodically changed.

Descriptors :   *Patents, *Arming devices, Safety equipment, Projectile fuzes, Spin stabilized ammunition, Rotation, Explosive charges, Isolation, Rotors

Subject Categories : Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE