Mining method

Details Mining method Mining method

1987-07-01

1989-01-10

Jordan, Charles T.

Ammunition and explosives

Igniting devices and systems

Ignition or detonation circuit

102206, F42B 310

Patent

active

047965312

ABSTRACT:
System for the electrical sequential initiation of explosions comprising a series of initiating modules connected to one another and connectable to a power supply, and a corresponding series of electrically actuable initiators. Each initiating module is connected to an initiator and embodies a non-latching switch for actuating the initiator associated with that initiating module. The non-latching switch comprises a solid state electronic device having an emitter, a gate and a collector, and comprises a short circuit between the gate and the emitter for holding the device in an "off" state to a voltage applied to the collector. The device also comprises an open circuit between the gate and the emitter for turning the device "on" to a voltage applied to the collector, while a diode integrated on the device blocks a reverse supply voltage. The non-latching switch of each initiating module save the first in the series is connected to the initiator associated with the preceding initiating module in the series. The arrangement is such that, in operation of the system, the non-latching switch of each initiating module is disabled until the initiator associated with the preceding initiating module in the series has been actuated by that initiating module. The initiating modules in the series are actuable sequentially by the power supply so as to sequentially initiate the series of initiators.

REFERENCES:
patent: 2891476 (1959-06-01), Forsyth
patent: 3099962 (1963-08-01), Smith
patent: 3316451 (1967-04-01), Silberman
patent: 3420175 (1969-01-01), Swallow et al.
patent: 3513355 (1970-05-01), Shauks
patent: 3714895 (1973-02-01), Rawson
patent: 3808459 (1974-04-01), Guimier et al.
patent: 3987733 (1976-10-01), Spraggs et al.
patent: 4099467 (1978-07-01), Mackellar et al.
patent: 4326752 (1982-04-01), Ricketts
patent: 4350097 (1982-09-01), Bowman et al.
patent: 4406226 (1983-09-01), Davitt et al.
patent: 4493259 (1985-01-01), Munzel
patent: 4536693 (1985-08-01), Marek

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