Firing pin and safety and arming mechanism for a penetrating war

Details Firing pin and safety and arming mechanism for a penetrating war Firing pin and safety and arming mechanism for a penetrating war

1987-03-02

1988-08-23

Bentley, Stephen C.

Ammunition and explosives

Igniting devices and systems

Arming devices

102255, F42C 1524

Patent

active

047652454

ABSTRACT:
A firing assembly for a hard target penetrating warhead is described. The firing assembly includes a safety and arming device with a truncated rotor that is normally retained in a safety position by its setback weight. On acceleration, the setback weight releases the rotor for rotation into a firing position where a pyrotechnical train carried by the rotor is aligned with the firing pin. To prevent over penetration of the pyrotechnical train by the firing pin on high deceleration, the firing pin has a striker with a radial flange that is captive in a chamber in the striker carrier. To prevent retrograde rotation of the rotor to its safety position or high deceleration of the warhead, such as in penetrating a hard target, the bore in the rotor accommodating the pyrotechnical train is chamfered at the entrance end to provide a camming surface that can be engaged by a tapered face on the front of the firing pin. This allows the firing pin to cam the rotor back into position when it has become displaced. The rotor itself is supported in place by a support block engaging the front face of the rotor.

REFERENCES:
patent: 2392884 (1946-01-01), Semple
patent: 2741183 (1956-04-01), Graumann et al.
patent: 2789507 (1957-04-01), Apotheloz
patent: 2812714 (1957-11-01), Wheatley et al.
patent: 4230042 (1980-10-01), Popovitch
patent: 4406225 (1983-09-01), Backstein et al.
patent: 4440085 (1984-04-01), Rossmann et al.
M. Webster, Webster's Ninth New Collegiate Dictionary, 1985, p. 934.

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