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.

Abstract: In a radio remote blasting system, a radio receiver triggers a blocking oscillator which generates a high voltage output. A rectifier rectifies the high voltage output and charges a capacitor, which is coupled to a plasma arc generator to apply the capacitor voltage to the plasma arc generator and generate a high voltage arc in the arc generator. The end of a shock tube is received in a port in the arc generator and the arc produced in the arc generator will ignite explosive material in the shock tube. The resulting explosion will travel from the point of ignition to an explosive device which will then be detonated.

Abstract: In a system for connecting blasting caps to the initiation source, a redundant design structure provides a more reliable method of explosive initiation. This is accomplished by using a complete system from blasting control through the initiation line and connecting blocks to the blasting caps. The connecting structure between the initiation device and the blasting caps comprises explosive tubing so that both the explosive charge and the electric wires in the tube casing will initiate explosion of the blasting caps and destroy the initiation tube and wires.The connecting blocks contain additional features, such as; explosive delay times, lightning and radio frequency energy attenuation circuits.

Abstract: This invention relates to safety and simplicity in initiating high explosives. The new method uses a hybrid system for electro-mechanically initiating either fast burning detonating cord or slower burning plastic initiating tube or fires electric blasting caps.The subject initiating system consists of four (4) basic components: a capacitor discharge power supply connected to a standoff cable reel, a wiring standoff cable spooled out from said reel to a solenoid housing.Within the housing, the system is again broken down into sub-components. A connector plug and socket connects the standoff cable to a pulse type electrical solenoid. The solenoid is positioned so that when said solenoid is electrically actuated the solenoid's plunger or firing pin strikes a shot shell primer which is inserted into a coupling device.

Abstract: The invention relates to a radio remote blasting system. The subject blasting system includes a portable remote controlled detonation system comprising a tone generating pad employed to generate a coded signal received at a blasting site by a receiver decoder detonator to enable detonation to occur by conventional means, also a radio telephone used to encode signal frequencies for use in enabling an explosive detonating device and allowing two way communication.