Method of electrically blasting detonator and cordless detonator

Details Method of electrically blasting detonator and cordless detonator Method of electrically blasting detonator and cordless detonator

1987-02-24

1988-07-05

Jordan, Charles T.

Ammunition and explosives

Igniting devices and systems

Electrical primer or ignitor

102200, 1022022, F42B 318

Patent

active

047547030

ABSTRACT:
A loop portion of a bus wire connected to an electric blasting device is passed through a first magnetic core together with a first loop-like wire, and the first loop-like wire is further passed through a second magnetic core provided in a detonator. The detonator includes a second loop-like wire which is passed through the second magnetic core, an electric bridge connected to the second loop-like wire and a fuse head provided around the electric bridge. When a pulsatory high frequency current is supplied to the bus wire, high frequency currents are induced in the first and second loop-like wires by electromagnetic induction. Then the current flows through the electric bridge of the detonator to fire the primer explosive.

REFERENCES:
patent: 4273051 (1981-06-01), Stratton
patent: 4425849 (1984-01-01), Jorgenson
patent: 4519314 (1985-05-01), Jorgenson
patent: 4601243 (1986-07-01), Ueda et al.

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