Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8051775 | Detonation to igniter booster device A detonating device includes a high explosive portion comprising high explosive; a low explosive portion comprising low explosive; and a transition portion between the high explosive portion and the low explosive portion, wherein the transition portion comprises a m... | 11/08/2011 |
| 7814833 | Detonator system having linear actuator Disclosed is a detonation initiator that can form part of a demolition assembly. The detonation initiator can include a linear actuator assembly having a core with a permanent magnet disposed with respect to a coil, and a firing pin coupled to the core and disposed ... | 10/19/2010 |
| 7431075 | Propellant fracturing of wells A propellant assembly for fracturing a formation around a well includes a propellant and a detonating cord wrapped around the propellant, the detonating cord to ignite the propellant upon detonation of the detonating cord. Alternatively, the propellant can include a... | 10/07/2008 |
| 7409911 | Propellant for fracturing wells An apparatus for fracturing wells employs a propellant charge and an ignition cord wrapped around the outer surface of the propellant charge to rapidly ignite the outer surface of the propellant charge. ... | 08/12/2008 |
| 7360487 | Connector for perforating gun tandem A perforating gun connector comprising a first and second section connected together on one end. The two sections of the perforating gun connector that couple together are correspondingly tapered so that one end of one connector is tapered and fits into the correspo... | 04/22/2008 |
| 7246558 | Rapid deflagration cord (RDC) ordnance transfer lines A novel transfer ordnance line and novel end fittings for the transfer line for use in space vehicles, aircraft, missile systems and other military applications. The transfer line is a Rapid Deflagration Cord (RDC) hermetically encapsulated in a metal tubing. The me... | 07/24/2007 |
| 7197985 | High-pressure explosive retention device An apparatus and method for reliably activating explosives includes providing one or more housing sections that define a sealed space. A first explosive element is provided in the sealed space, and a second explosive element has a first portion inside the sealed spa... | 04/03/2007 |
| 7188566 | Non-electric detonator A detonator (10) has a constant-diameter shell (12) which has a significantly higher shell length-to-diameter (outside diameter) ratio than prior art detonators. The shell (12) is configured to hold an explosive output charge (18) which i... | 03/13/2007 |
| 7162957 | Redundant signal transmission system and development method Percussive signal transmission tubes, of contrasting color, are joined along adjacent longitudinally extending portions by an adhesive bead of polymeric material. The tubes can be separated in the field and are provided on spools without any sheath. A small diameter... | 01/16/2007 |
| 7117796 | Igniter for exothermic torch rod An igniter's housing is bored continuously there through to define, in succession, several bore regions. A firing pin, slidingly fit in the first bore region, terminates in a tip that protrudes into a primer-filled second bore region when the firing pin is fully sea... | 10/10/2006 |
| 7086335 | Redundant signal transmission system and deployment means Percussive signal transmission tubes, of contrasting color, are joined along adjacent longitudinally extending portions by an adhesive bead of polymeric material. The tubes can be separated in the field and are provided on spools without any sheath. A small diameter... | 08/08/2006 |
| 6691621 | Ignition device for a propellant charge A propellant charge ignition device having one or more ignition means and incorporating one or more diffuser tube(s) extending through a part of the propellant charge. The structure permits a flame generated by the ignition means to be guided up to a prop... | 02/17/2004 |
| 6651563 | Ignition elements and finely graduatable ignition components An ignition element consists of a combination of first and second ignition components. The first ignition component contains at least one primer, at least on heat-conducting additive selected from the group consisting of zirconium, aluminum, titanium, fer... | 11/25/2003 |
| 6622630 | Booster A booster to relay a detonation train from a detonating cord to another booster includes an explosive and a shell. The shell has an open end to receive an end of the detonating cord and an indented closed end that is adapted to form a projectile to strike... | 09/23/2003 |
| 6584905 | Plated through-hole ignitor for detonation cord or shock tube 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... | 07/01/2003 |
| 6581519 | Blasting cap initiator system A blasting cap initiator system has a main housing with an imperforate lower wall, parallel side walls, and front and rear walls. An L-shaped locking slot is formed centrally in one side wall with a trigger recess formed in the top wall adjacent the rear ... | 06/24/2003 |
| 6536798 | Controlling activation of restraint devices in a vehicle An apparatus for activating a selected one or more restraint devices located in a vehicle is provided. The apparatus reliably and inexpensively activates restraint devices upon the receipt of one or more appropriate signals. The apparatus includes a contr... | 03/25/2003 |
| 6530327 | Method and apparatus for burning pyrotechnic compositions A pyrotechnic device and method for making the same is disclosed which includes a pyrotechnic composition comprising a fuel, an oxidizing agent, and at least one of a metal salt and metal powder; wherein the pyrotechnic composition further comprises a cyl... | 03/11/2003 |
| 6516725 | Force amplifying initiating device A cartridge assembly 10 includes a shell 12 containing a propellant charge 19. At a rear, open end, the shell 12 holds a force amplifying initiating device 20, in turn holding a rim fire primer 22 in operative association with the propellant 19. A firing ... | 02/11/2003 |
| 6515570 | Fuse with overstoichiometric amount of oxidant A fuse has a fuse element (6), composed of silver, with constrictions (7) which follow one another at regular intervals, and which fuse element makes contact with a combustible element (8), preferably over its entire length. The combustible element (8) is... | 02/04/2003 |
| 6386085 | Method and apparatus for explosives assembly A method for assembling a blast initiation device is provided. The method comprises providing a length of signal transmission line having first and second ends, mounting a tag to the line and mounting a first detonator to the first end of the line wherein... | 05/14/2002 |
| 6227116 | Pyrotechnical charge for detonators A detonator comprising a shell with a secondary explosive base charge, igniting means and an intermediate pyrotechnical train, said train comprising a novel ignition composition with a specific redox-pair of a metal fuel and a metal oxide oxidant, said fu... | 05/08/2001 |
| 6209457 | Method and preformed composition for controlled localized heating of a base material using an exothermic reaction A method and an exothermic composition for controlled localized heating of a base material, said composition comprising an exothermic mixture material, a binder material, and optional filler and starter materials, said exothermic mixture material having a... | 04/03/2001 |
| 6125763 | Integral solid booster and hybrid thrust sustaining system and projectile incorporating the same A rocket according to the invention includes a motor having a fuel chamber and an oxidizer tank, a nose portion provided forward of the motor, and a nozzle surrounded by fins provided aft of the motor. The fuel chamber is provided with a relatively centra... | 10/03/2000 |
| 5945627 | Detonators comprising a high energy pyrotechnic In-hole and surface detonators are provided which are essentially free from primary explosives. The detonators utilize a high energy pyrotechnic mixture of a fuel and an oxidizer for initiation of a base charge enclosed in the detonator, or for the initia... | 08/31/1999 |
| 5917142 | Fusee cap having a spark deflector shield A fusee cap includes a fusee cap body having a scratch surface for frictional engagement with the head of a fusee to cause fusee ignition and a spark deflector shield projecting from the fusee cap body to deflect sparks produced during ignition.... | 06/29/1999 |
| 5886282 | Electrical model rocket ignitor and method of manufacturing the same The invention is directed to an electrical ignitor for a model rocket, including two insulated lead wires, with each lead wire having an uninsulated end. An element wire interconnects the uninsulated ends from each lead wire. The element wire forms a plur... | 03/23/1999 |
| 5876063 | Vehicular safety device A vehicular safety device for actuation of an occupant restraint means includes a cylinder tube having an axis, a cylinder wall with an outer envelope surface and a through-opening in the cylinder wall, a pyrotechnical gas generator material disposed in t... | 03/02/1999 |
| 5837924 | Signal transmission tube using reclaim material and method of manufacture The manufacture of a signal transmission tube (10a) comprising a polymeric tube (12) having an interior surface (14) with a thin layer of reactive material (18) disposed on the interior surface (14) is rendered more efficient and less costly by the use of... | 11/17/1998 |
| 5827993 | Pyrotechnic ignition device for a gas generator A pyrotechnic ignition device for a gas generator (G), in which: (i) at least in the vicinity of the primary charge (CP), the transmission line (L) is at least substantially perpendicular to the longitudinal axis (X--X) of the outer case (E) of the genera... | 10/27/1998 |
| 5780764 | Booster explosive devices and combinations thereof with explosive accessory charges A booster explosive device (10) has a housing (12) within which is contained an explosive primer charge (14). Mechanical fastener components such as exterior screw threads (32) on housing (12) and interior screw threads (34) on an explosive accessory char... | 07/14/1998 |
| 5708228 | Method and apparatus for transfer of initiation signals A method and apparatus for transferring non-electric blasting initiation signals from detonating cord signal donor lines to signal transmission tube acceptor lines involves disposing the acceptor line in enhanced signal transfer configuration with the don... | 01/13/1998 |
| 5665932 | Initiation of blasting The invention provides a method for the initiation of blasting. The method comprises the steps of initiating a detonation in an initial shock robe and causing the detonation to propagate along the interior of the shock robe. The detonation in the initial ... | 09/09/1997 |
| 5661256 | Slider member for booster explosive charges A slider (36) has a base fixture (40) and a shielding tube (42). The slider (36) is used to operably couple a detonator (44) to a detonating cord (62) that passes through a booster device (10), i.e., to prevent the detonating cord (62) from directly initi... | 08/26/1997 |
| 5623115 | Inflator for a vehicle airbag system and a pyrogen igniter used therein An elongated gas generator, or inflator, includes a pyrogen igniter mounted at one end thereof. The pyrogen igniter encloses a unitary grain of ignition material having a centrally located cavity. An initiator, or squib, is located to ignite the unitary g... | 04/22/1997 |
| 5398611 | Low energy blasting initiation system, method and surface connection therefor A low-energy blasting initiation system, method and surface connection is disclosed for low-noise, time controlled transmission of an initiation signal from a signal initiation source to a plurality of remote blasting elements. A connector block of the sy... | 03/21/1995 |
| 5390606 | Frangible joint separation system An improved explosively operated separation joint as well as a process for manufacturing it are disclosed. In the present invention, a hollow-form extrusion is used to provide both sides of a separation joint, each side being attached to both of the two s... | 02/21/1995 |
| 5365851 | Initiator device An initiation fixture (16) for an impulse transmission tube comprises a sleeve (30) having an internal longitudinal bore. The sleeve (30) is dimensioned and configured to receive a shock tube (10) in one end and a primer cap (28) in the other. An internal... | 11/22/1994 |
| 5351623 | Explosive simulator A device is provided which safely simulates the loud noise and bright flash of light of an explosion. This device consists of an ordnance case which encloses a battery, an electronic control module, a charging circuit board, a bridge head, and a shock tub... | 10/04/1994 |
| 5347931 | Combustible flare ignition system A combustible ignition system for use in an illuminating flare warhead. The ignition system includes a pickup charge positioned contiguous the separation charge of the ignition initiator. The pickup charge is positioned such that the firing of the separat... | 09/20/1994 |
