초록 ▼

Electroexplosive device and static discharge element therefor. The electroexplosive device herein has a cylindrical metallic casing which is open at one end and closed at the other end, a bridge element and lead wires therefor, a static discharge disc surrounding the lead wires for preventing accide

Electroexplosive device and static discharge element therefor. The electroexplosive device herein has a cylindrical metallic casing which is open at one end and closed at the other end, a bridge element and lead wires therefor, a static discharge disc surrounding the lead wires for preventing accidental ignition due to static electricity, and a ferrite sleeve surrounding the lead wires to prevent accidental initiation due to radio frequency currents. The static discharge element comprises a nonconductive circular substrate having a slotted opening for the lead wires, and a conductive coating layer on at least one face of the substrate to conduct electricity from the leads to the casing in the event of electrostatic discharge. This conductive layer should be in electrical contact with the casing but not with the lead wires; to that end the substrate is left uncoated in the immediate vicinity of the opening. The ferrite sleeve is in electrical contact with the casing through a solder layer but is electrically insulated from the lead wires by a nonconductive thermal plastic material.

대표청구항 ▼

A static discharge element for an electroexplosive device comprising a non-conductive substrate having at least one opening adapted to permit the lead or leads to extend therethrough, and a thin electrically conductive layer covering a portion of at least one face of said substrate, said conductive

A static discharge element for an electroexplosive device comprising a non-conductive substrate having at least one opening adapted to permit the lead or leads to extend therethrough, and a thin electrically conductive layer covering a portion of at least one face of said substrate, said conductive layer being entirely out of physical and electrical contact with any such opening but having a boundary, at least a portion of which lies in proximity with an edge of an opening.