Ammunition and explosives – Igniting devices and systems
Patent
1959-01-20
1977-11-01
Jordan, Charles T.
Ammunition and explosives
Igniting devices and systems
F42C 1302
Patent
active
040560619
ABSTRACT:
1. An infrared proximity fuse comprising means to transduce infrared radiation intensity into the amplitude of an electrical signal, first circuit means including a low pass filter connected to filter substantially all frequencies except DC from said electrical signal, thus generating a DC output signal, second circuit means including a high pass filter connected to filter substantially all low frequencies from said electrical signal, thus generating an AC output signal, a demodulator having as its input said AC output signal from said second circuit means to produce a DC signal corresponding to the amplitude of said AC output signal, a gate circuit means having as inputs said DC output signal from said first circuit means and said DC signal corresponding to the amplitude of said AC output signal, said gate circuit means having means to generate an output signal solely during an interval when said DC output signal is above a maximum preset level and said DC signal corresponding to the amplitude of said AC output signal is below a minimum preset level, a detonator, and means responsive to production of the output signal of said gate circuit means to energize said detonator.
REFERENCES:
patent: 2441030 (1948-05-01), Page
patent: 2489223 (1949-11-01), Herbold
patent: 2730654 (1956-01-01), Rabinow
patent: 2794926 (1957-06-01), Watts et al.
patent: 2878396 (1959-03-01), Behm et al.
patent: 2925965 (1960-02-01), Pierce
patent: 2932743 (1960-04-01), Atwood
Bandy Alva H.
Grossman Rene E.
Jordan Charles T.
Levine Harold
Texas Instruments Incorporated
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