Plated through-hole ignitor for detonation cord or shock tube
OwnerRichard N. Snyderinventor
Life of this patent
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Abstract
In a system for igniting detonation cord or shock tube, a plated through-hole in printed circuit board is coupled to a circuit to have high voltage and high current applied to the plated through-hole. The end of the detonation cord or shock tube is passed through the plated through-hole and formed into a knot to secure the detonation cord or shock tube in the plated through-hole. The voltage and current applied to the plated through-hole are of sufficient magnitude to explode the plated through-hole and ignite the detonation cord or shock tube.
Claims17
An explosive material ignition system comprising an explosion transmitting line of the type containing explosive material whereby an explosion will travel along the length of said line when the explosive material in said line is ignited, a piece of an insulation board, a plated through-hole defined in said insulation board coupled to said explosion transmitting line, said plated through-hole comprising a layer of electrically conducting material formed on the wall of a hole extending through said piece insulation board, a circuit operable when triggered to apply a high voltage between the opposite ends of said plated through-hole on opposite sides of said insulation board to cause a high current to flow through said plated through-hole, the magnitude of said voltage and said current being sufficient to ignite the explosive material in said explosion transmitting line.
A system for igniting explosion transmitting line comprising a piece of insulation board, a plated through-hole defined through said insulation board, said plated through-hole comprising a layer of electrically conducting material formed on the wall of a hole extending through said insulation board, a circuit for applying a high current and voltage to the ends of said layer on opposite sides of said insulation board, said current and said voltage being of sufficient magnitude to ignite explosive material in an explosion transmitting line coupled to said plated through-hole.
A method of igniting explosion transmitting line comprising coupling a plated through-hole formed in insulation board to the explosion transmitting line, said plated through-hole comprising electrically conducting material, and applying a voltage and current to the electrically conducting material of said plated through-hole with sufficient magnitude to ignite the explosive material in said explosion transmitting line.
Dependencies are inferred from the claim text.