Ammunition and explosives – Igniting devices and systems – Arming devices
Patent
1986-09-17
1988-04-05
Jordan, Charles T.
Ammunition and explosives
Igniting devices and systems
Arming devices
89 113, 102254, F42C 1500, F41H 1114
Patent
active
H00004537
ABSTRACT:
The invention provides a novel dual safety fuze for a rocket-launched mine learing linear high explosive charge. The fuze comprises a tubular housing, having a forward section containing two booster charges for initiating the line charge, an intermediate section containing two electric delay detonators, a rotor containing two lead charges positioned between the forward and intermediate sections and a rearward section mounting two axial arming pins, which provide a first and second lock of the rotor in the safe position. A novel rotor spring assembly includes a rotatable shaft, whose one end is attached to a torsion spring for rotating the rotor and other end has a screw-like configuration, which is engaged by a fork-like driver mounted on the first arming pin. The torsion spring is not torqued when the rotor is in the safe position; but when the linear charge is deployed on the ground, the first firing pin is withdrawn from the rotor by the pull of the arresting cable, causing (1) the driver to rotate the screw/shaft and thereby preload the torsion spring and (2) the short across the two detonators to open and thus close the firing circuit. The operator then closes a firing control switch which (1) energizes the electrically piston-actuated second arming pin, thereby removing the second safety lock and releasing the rotor to rotate to the armed position, and (2) simultaneously energizes the delay detonators. On expiration of the delay period the detonators actuate and fire the line charge.
REFERENCES:
patent: 3242862 (1966-03-01), Stegbeck et al.
patent: 3724319 (1973-04-01), Zabelka et al.
Card, Jr. Harold H.
Jordan Charles T.
Lane Anthony T.
Sachs Michael C.
The United States of America as represented by the Secretary of
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