Ammunition and explosives – Igniting devices and systems
Patent
1974-05-21
1976-08-24
Jordan, Charles T.
Ammunition and explosives
Igniting devices and systems
89 6, F42C 1100, F42C 1700
Patent
active
039760120
ABSTRACT:
An automatic switching arrangement in electric fuses for projectiles which can be set on at least three different operational functions, for example proximity fuse function and inpact fuse function with two different sensitivities. The electric fuse comprises at least two separate ignition circuits each having an inhibition control terminal connected to the respective ignition circuit so that this circuit functions normally when the associated control terminal is connected to ground and is deactivated when the ground connection is interrupted. The inhibition control terminals are connected to ground through individual fusible wires. Each fusible wire is connected to an electric contact which is accessible from the outside of the projectile through individual different polarity dependent or amplitude dependent impedance elements. To set the electric fuse on a desired function, the projectiles are moved successively past a setting station comprising a voltage generator. The generator has an output terminal adapted to successively contact said contacts on the projectiles as they move past the generator. Depending on its setting, the generator delivers voltage pulses of different polarity or amplitude whereby selective melting of the fusible wires can be effected by means of the voltage generator for setting the electric fuse.
REFERENCES:
patent: 1791606 (1931-02-01), Ruhlemann
patent: 1794421 (1931-03-01), Ruhlemann
patent: 1841983 (1932-01-01), Ruhlemann
patent: 2998773 (1961-09-01), Ruhlemann
patent: 3362331 (1968-01-01), Lagerstrom
patent: 3722416 (1973-03-01), Lunt et al
Franzblau Bernard
Jordan Charles T.
Trifari Frank R.
U.S. Philips Corporation
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