Abstract: A fire extinguishment system may include a fire extinguishment apparatus joined to dry chemical, clean agent and water systems. The fire extinguishment apparatus may include dry chemical, clean agent and water nozzles joined to a housing. The dry chemical nozzle may be a multi-stage nozzle configured to discharge consolidated dry chemical with a substantial charge. The dry chemical nozzle may include chamber segments formed from aluminum, collars formed from stainless steel and positioned between the chamber segments, and a flow disruptor. At least some chamber segments may include rifled surfaces. The dry chemical nozzle may be positioned within the water nozzle to allow water discharged from the water nozzle to at least partially encompass dry chemical discharged from the dry chemical nozzle or positioned offset from the water nozzle to allow for parallel discharge of water and dry chemical streams from the fire extinguishment apparatus.

Abstract: A detonating cord transport package wherein a continuous length of a metal jacket detonating cord is installed on a plurality of separator-support members such that the detonating cord is formed in a plurality of loops on each separator-support member with the two end portions of each loop being in proximity to each other. In the preferred embodiment, the two end portions of each loop engage each other and cross each other as seen in a given view.

Abstract: A detonating cord transport system is disclosed wherein detonating cord is windingly disposed on a plurality of separator-support members in such a manner that the cord is wholly accessible from a front face surface and is thus disposed without having to manipulate the separator-support members. For each separator-support member, the detonating cord is windingly disposed on a plurality of winding support devices such that there are a plurality of severing locations at frequent intervals at which severing locations there is incorporated means for stopping any detonation that occurs, with the result that such detonation will be confined to a relatively short length of detonating cord and will also be confined to the detonating cord transport system container.

Abstract: A detonating cord transport system is disclosed wherein detonating cord is windingly disposed on a plurality of separator-support members in such a manner that the cord is wholly accessible from a front face surface and is thus disposed without having to manipulate the separator-support members. For each separator-support member, the detonating cord is windingly disposed on a plurality of winding support devices such that there are a plurality of severing locations at frequent intervals at which severing locations there is incorporated means for stopping any detonation that occurs, with the result that such detonation will be confined to a relatively short length of detonating cord and will also be confined to the detonating cord transport system container.

Abstract: A shaped charge has a case, a cap, and an O-ring. The case has first and second ends and a cavity therein. The case first end has a cylindrical first surface that circumferentially surrounds the cavity. The case second end has a bifurcated projection for receiving a portion of detonating cord. The cap also has first and second ends and cavity therein. The cap first end has a cylindrical second surface that circumferentially surrounds the cap cavity. The case and cap first ends matingly receive each other such that the first and second surfaces face each other. The first and second surfaces have respective circumferential grooves that are aligned with each other when the case and cap are assembled together. The grooves receive the O-ring, which retains the case and cap together while permitting the case to rotate relative to the cap. The cap second end is adapted to couple to a shaped charge carrier.

Abstract: There is disclosed an easy to assembly detonating cord retainer arrangement for shaped charges. A portion of a length of detonating cord is laid into the slot of a bifurcated cylindrical projection located at one end of the shaped charge case. A push nut is pressed onto the projection to retain the detonating cord within the slot.