| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 102202100 | Accidental fuse ignition prevention means | 14 |
| 20080276818 | Shock Tube Initiator - A shock tube initiator (STI) for allowing the remote and/or manual initiation of at least one shock tube, typically two shock tubes is disclosed. The STI consists of: a) at least one coupling | 11-13-2008 |
| 20090293751 | POWER MANAGEMENT OF BLASTING LEAD-IN SYSTEM - A blasting system ( | 12-03-2009 |
| 20100005992 | Surface Safe Explosive Tool - An explosive tool is disclosed. The explosive tool comprises a body structure, a charge, a detonator to ignite the charge via propagation of thermal energy, a pressure actuated safety to prevent propagation of sufficient thermal energy to ignite the charge when the pressure actuated safety is subjected to a surface pressure and to not prevent propagation of sufficient thermal energy to ignite the charge when the pressure actuated safety is subjected to at least a predefined pressure threshold, and a temperature actuated safety to prevent propagation of sufficient thermal energy to ignite the charge when the temperature actuated safety is subjected to a surface temperature and to not prevent propagation of sufficient thermal energy to ignite the charge when the temperature actuated safety is subjected to at least a predefined temperature threshold. The charge, the detonator, the pressure actuated safety, and the temperature actuated safety are contained within the body structure. | 01-14-2010 |
| 20100282105 | Initiator - An initiator including a housing adapted to be received in an igniter or rocket motor, at least one charge at a distal end of the housing, an electro-explosive device behind the charge for detonating the charge when subject to a voltage HV, and a pressure bulkhead behind the electro-explosive device. An electronic subsystem in the housing is connected to the electro-explosive device through the bulkhead and includes a lead for providing the voltage HV to the electro-explosive device to initiate it, and a switch in the lead which does not conduct if errant voltages are present on the lead to prevent initiation of the electro-explosive device until the correct voltage HV is present. | 11-11-2010 |
| 20110297029 | INERTIAL IGNITERS WITH SAFETY PIN FOR INITIATION WITH LOW SETBACK ACCELERATION - Inertial igniters for initiating a thermal battery and methods of preventing initiation of an inertial igniter are provided. The method including: biasing a mass element from a base element with a spring element connecting the mass element and the spring element; and removably disposing a safety member between the mass element and the base element to prevent relative movement between the mass element and base element to prevent accidental initiation of the inertial igniter. The method can further comprise removing the safety member prior to subjecting the inertial igniter to all-fire conditions. | 12-08-2011 |
| 20110308414 | ELECTRONIC SAFE, ARM, AND FIRE DEVICE CONFIGURED TO REJECT SIGNALS BELOW A PREDETERMINED 'ALL-FIRE' VOLTAGE - An electronic ignition safety device configured to reject signals below a predetermined ‘all-fire’ voltage includes an exploding foil initiator having an electrical input and an output end, and an electronic fireset electrically connected to the electrical input of the exploding foil initiator. The device also includes a through bulkhead initiator (TBI) body, a donor charge disposed adjacent the output end of the exploding foil initiator, and an acceptor charge. The device further includes an integral barrier disposed between the donor charge and the acceptor charge, and one or more of the donor charge, the acceptor charge, and/or the integral barrier being disposed within a component part that is assembled to the TBI body. The device also includes an output charge disposed adjacent the acceptor charge. | 12-22-2011 |
| 20140076185 | Compact and Low-Volume Mechanical Igniter and Ignition Systems with Safing Arm and Arming Pin for Thermal Batteries and the Like - A method for actuating an inertial igniter. The method including: moving a mass contained within an interior of a body towards one of a pyrotechnic material or primer when an all-fire acceleration profile is experienced; hermetically sealing the interior of the body from an outside environment; restraining the movable mass from contacting the one of the pyrotechnic material or primer for acceleration profiles less than the all-fire acceleration profile; at least indirectly blocking the movable mass from movement towards the one of the pyrotechnic material or primer under acceleration profiles equal to or greater than the all-fire acceleration profile; and manually removing the blocking such that the movable mass can move towards and contact the one of the pyrotechnic material or primer when the all-fire acceleration profile is experienced to actuate the inertial igniter. | 03-20-2014 |
| 20160131466 | MULTI-ACTION FUZE AND WARHEAD SEPARATOR FITTED TO A MUNITION - A multi-step separator for a fuze is configured to be mated to an explosive device in a military munition, either at a production facility during manufacture of the munition or during use in the field. The fuze includes a detonator with a booster or spit-back element for initiating an energetic sequence resulting in a high-order detonation of the explosive device. The multi-step separator includes:
| 05-12-2016 |
| 20160153752 | DETONATOR | 06-02-2016 |
| 102202200 | Having electromagnetic field effects diminishing or elimination means | 1 |
| 20120186476 | SPARK GAP ISOLATED, RF SAFE, PRIMARY EXPLOSIVE DETONATOR FOR DOWNHOLE APPLICATIONS - An radio frequency (RF) safe, high standoff voltage, ESD protected primary explosive detonator is described. The primary explosive detonator includes an isolated spark gap (SG) circuit and one or more shunt capacitors to insulate the electric match from ignition when exposure to high stray voltage or RF occurs in oilfield applications. | 07-26-2012 |
| 102202300 | Fuse device resistive shunt | 4 |
| 20100000435 | PYROELECTRONIC DETONATOR PROVIDED WITH A CIRCUIT FOR SHUNTING AN ELECTROTHERMAL BRIDGE - A pyroelectronic detonator ( | 01-07-2010 |
| 20150292849 | High Voltage Explosive assembly for downhole detonations - A downhole explosive detonation comprises a high voltage electro-explosive initiator comprising an input high voltage power supply with a low impedance shunting fuse, a flexible electrical link and a capacitor discharge unit. Explosive is initiated in a direction approximately parallel, or in another version perpendicular to the capacitor discharge unit. A unique configuration and construction of the assembly allows installation through a small service port in the gun housing structure for more efficient gun arming. A real time downhole voltage monitoring is described that transmits voltage readings to the surface during a firing sequence. | 10-15-2015 |
| 20160178334 | DOUBLE SAFETY FIRING SYSTEM FOR INITIATORS | 06-23-2016 |
| 102202400 | Voltage responsive variable resistance shunt (e.g., semiconductor shunts) | 1 |
| 20080223241 | DETONATOR IGNITION PROTECTION CIRCUIT - An ignition circuit for a detonator is disclosed. The circuit includes; an igniter having a first terminal and an opposing second terminal, a first diode electrically connected in series with the igniter at the first terminal, and a second diode electrically connected in series with the igniter at the second terminal. The first and second diodes each have an anode terminal and a cathode terminal, wherein like terminals of the first and second diodes are electrically connected to the igniter, thereby defining proximal terminals proximate the igniter and distal terminals on an opposing side of each respective diode. An energy source and a switch are electrically connected in series with each other, and are electrically connected across the distal terminals. Current flow through the igniter sufficient to ignite the igniter is prevented until an ignition voltage is applied to the distal terminals that is equal to or greater than the reverse breakdown voltage of the first diode or the second diode. | 09-18-2008 |
