A method of making a low cost chip slapper detonator includes the steps of: providing a substrate having a substrate top and a substrate bottom; electroplating a pattern of conductive pads on the substrate bottom; drilling a pattern of via holes through the substrate, wherein the via holes are in contact with the conductive pads; plating the via holes with a conductive material to create a conductive path in the via holes between the substrate top and the substrate bottom; metallization of a multiplicity of conductive bridges on the substrate top; adhering a slapper layer over the multiplicity conductive bridges on the substrate; and dicing the substrate into individual chip slapper detonators wherein each the individual chip slapper detonator includes one of the multiplicity conductive bridges.

A method of making a low cost chip slapper detonator includes the steps of: providing a substrate having a substrate top and a substrate bottom; electroplating a pattern of conductive pads on the substrate bottom; drilling a pattern of via holes through the substrate, wherein the via holes are in contact with the conductive pads; plating the via holes with a conductive material to create a conductive path in the via holes between the substrate top and the substrate bottom; metallization of a multiplicity of conductive bridges on the substrate top; adhering a slapper layer over the multiplicity conductive bridges on the substrate; and dicing the substrate into individual chip slapper detonators wherein each the individual chip slapper detonator includes one of the multiplicity conductive bridges.

In an aspect of the invention there is provided an integrated circuit initiator device that comprises a circuit substrate provided with an electrical insulating layer; an electrical conducting bridge circuit deposited on the insulating layer; said bridge circuit patterned as contact areas and a bridge structure connecting the contact areas, said bridge structure arranged for forming a plasma when the bridge structure is fused by a initiator circuit that contacts the contact areas; and a polymer layer that is spin-coated on the bridge structure, for forming a flyer that is propelled away from the substrate.

In an aspect of the invention there is provided an integrated circuit initiator device that comprises a circuit substrate provided with an electrical insulating layer; an electrical conducting bridge circuit deposited on the insulating layer; said bridge circuit patterned as contact areas and a bridge structure connecting the contact areas, said bridge structure arranged for forming a plasma when the bridge structure is fused by a initiator circuit that contacts the contact areas; and a polymer layer that is spin-coated on the bridge structure, for forming a flyer that is propelled away from the substrate.

An ignitor for an electronic detonator, the ignitor including a microcontroller and a capacitor mounted on a printed circuit board (PCB) and electrically connected to one another, the microcontroller configured to discharge the capacitor in response to an actuation signal received by the microcontroller, a pair of conductive traces extending from the capacitor, a resistive element extending between the conductive traces and configured to radiate heat in response to current flowing therethrough, and a shroud disposed over the resistive element, the shroud containing a pyrotechnic composition that at least partially covers the resistive element.

An ignitor for an electronic detonator, the ignitor including a microcontroller and a capacitor mounted on a printed circuit board (PCB) and electrically connected to one another, the microcontroller configured to discharge the capacitor in response to an actuation signal received by the microcontroller, a pair of conductive traces extending from the capacitor, a resistive element extending between the conductive traces and configured to radiate heat in response to current flowing therethrough, and a shroud disposed over the resistive element, the shroud containing a pyrotechnic composition that at least partially covers the resistive element.

The invention relates to a crane socket for a loading crane, including a base part which has a bearing region for bearing the rotatable part of a loading crane, at least one support part which is used to additionally support the crane socket on a substructure, and a joint which connects the base part to the at least one support part. The joint is a torsionally flexible support, in which a first end of the support is connected to the base part, and a second end of the support is connected to the at least one support part.

The invention relates to a crane socket for a loading crane, including a base part which has a bearing region for bearing the rotatable part of a loading crane, at least one support part which is used to additionally support the crane socket on a substructure, and a joint which connects the base part to the at least one support part. The joint is a torsionally flexible support, in which a first end of the support is connected to the base part, and a second end of the support is connected to the at least one support part.

In general, in one aspect, embodiments relate to a detonator assembly that includes a detonator housing that includes a detonating cord receptacle and a detonator receptacle, a detonator seated within the detonator receptacle, a detonating cord seated within the detonating cord receptacle side-by-side the detonator, and a grounding clip that extends lengthwise along a substantial portion of the detonator housing, where the grounding clip extends beyond an axial end of the detonator housing.

In general, in one aspect, embodiments relate to a detonator assembly that includes a detonator housing that includes a detonating cord receptacle and a detonator receptacle, a detonator seated within the detonator receptacle, a detonating cord seated within the detonating cord receptacle side-by-side the detonator, and a grounding clip that extends lengthwise along a substantial portion of the detonator housing, where the grounding clip extends beyond an axial end of the detonator housing.