Dud de-arming device or insert for a projectile fuze

Details Dud de-arming device or insert for a projectile fuze Dud de-arming device or insert for a projectile fuze

1989-05-12

1990-04-10

Brown, David H.

Ammunition and explosives

Igniting devices and systems

Arming devices

102246, 102247, 102255, 102256, F42C 1544

Patent

active

049150286

ABSTRACT:
The dud de-arming device serves to de-arm a fuze of a projectile which has remained lying on the ground or the place where it landed as a dud in order to prevent the discovered dud from still exploding when touched or moved. As to spinning projectiles the dud de-arming device should de-arm the fuze after disappearance of the projectile spin and for spinless projectiles the dud de-arming device should de-arm the fuze after a certain time following the impact deceleration of the spinless projectile. The dud de-arming device comprises a rotor which can be rotated by spring force. This rotor can assume an armed or live position due to the projectile spin or by virtue of the firing acceleration. Upon disappearance of the projectile spin or by virtue of the impact deceleration the rotor should assume a de-armed or safety position.

REFERENCES:
patent: 2513158 (1950-06-01), Foley
patent: 2718850 (1955-09-01), Kuhn
patent: 2947249 (1960-08-01), Vogt et al.
patent: 3045597 (1962-07-01), Linn
patent: 3157125 (1964-11-01), Lohmann
patent: 3732822 (1973-05-01), Thomanek
patent: 4007689 (1977-02-01), Apotheoz
patent: 4154169 (1979-05-01), Petiteau
patent: 4449457 (1984-05-01), Halssig
patent: 4726294 (1988-02-01), Apotheloz et al.
patent: 4790246 (1988-12-01), Halssig et al.

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