Timing of a multi-shot blast

Details Timing of a multi-shot blast Timing of a multi-shot blast

1989-09-12

1993-05-25

Johnson, Stephen M.

Ammunition and explosives

Igniting devices and systems

Ignition or detonation circuit

102215, F23Q 2100

Patent

active

052142361

ABSTRACT:
In a method of timing a multi shot blast, a plurality of explosive charges each comprising a programmable detonator arrangement 14.1 to 14.n are positioned at a blast site. At a control center 11, the desired times of the shots in the blast are programmed into a transportable firing tool 13 and the tool is carried to each detonator arrangement where a dedicated data path is established between the tool and each detonator arrangement, one after the other. The charges are fired by loading data regarding the times on which the detonator arrangements must cause their associated charges to explode into each detonator arrangement, individually. The detonator arrangements are allowed to process the data and to cause their associated charges to explode when according to a clock in the detonator arrangement and the data stored in the arrangement it is time for the charge to explode.

REFERENCES:
patent: Re32888 (1989-03-01), Kirby et al.
patent: 4136617 (1979-01-01), Fowler
patent: 4537131 (1985-08-01), Saunders
patent: 4615268 (1986-10-01), Nakano et al.
patent: 4632031 (1986-12-01), Jarrott et al.
patent: 4674047 (1987-06-01), Tyler et al.
patent: 4848232 (1989-07-01), Kurokawa et al.
patent: 5014622 (1991-05-01), Jullian

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