Ammunition and explosives – Igniting devices and systems – Arming devices
Patent
1992-11-12
1993-10-05
Brown, David H.
Ammunition and explosives
Igniting devices and systems
Arming devices
102248, 102262, 102264, F42C 1540, F42C 1524, F42C 1534
Patent
active
052495264
ABSTRACT:
A safe and arm device has a cylindrical body from which a plurality of exsive leads diverge from a rotor movable through an arming angle to electrically and mechanically arm a plurality of detonators and has a rotary solenoid with a shaft oscillating a predetermined number of times when the device is to assume an armed condition. The device has an axle extending alongside the shaft, and a setback weight is mounted on and helically coupled to the axle to motivate the axle through an angle actuating the rotor through the arming angle. The shaft bears an arcuate pawl having recesses, and the axle bears an arcuate cam having recesses juxtapositioned to the pawl. Latch balls are mounted in the body between the pawl and cam for movement partially into and from the recesses. The pawl recesses are configured so that the balls are alternately motivated toward and from the cam by the oscillations, and the cam recesses are configured so that alternating engagement and disengagement by the balls releases the shaft, when motivated by the weight, to move through the actuating angle in steps corresponding to the oscillations. The cam recesses and rotor actuation are arranged to allow the device to be resafed, to be locked in both safe and armed conditions, and to minimize any intermediate condition.
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Brown David H.
Church Stephen J.
Forrest, Jr. John L.
Sliwka Melvin J.
The United States of America as represented by the Secretary of
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