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| Number | Title | Issue Date |
| 7617775 | Multiple slave logging device A multiple slave logging device, or “logger” for use in a system such as an electronic blasting system. The logger is able to communicate with multiple slave devices connected to it, and preferably also is able to communicate with a slave device connected indivi... | 11/17/2009 |
| 7577756 | Dynamically-and continuously-variable rate, asynchronous data transfer A method of dynamically- and continuously-variable rate asynchronous data transfer, such as for use in an electronic blasting system, may employ a device that transmits data including synchronization bits and bits conveying other information, and a device that ascer... | 08/18/2009 |
| 7533613 | Slave device, such as in an electronic blasting system, capable of being identified if unknown or unmarked A slave device for use in a system such as an electronic blasting system wherein a command is issued by a master device to all slave devices connected to the system, causing all slave devices that have not been identified to the master device to respond with identif... | 05/19/2009 |
| 7464648 | Hybrid electronic and electromechanical arm-fire device A hybrid electronic and electromechanical arm-fire device comprising a moving mechanical element having a safe position and an armed position, one or more pyrotechnic detonators each having an output mounted on the moving mechanical element, a pickup adjacent to the... | 12/16/2008 |
| 7464647 | Dynamic baselining in current modulation-based communication Dynamic baselining of current modulation-based talkback from a slave device to a master device in a system such as an electronic blasting system, wherein the dynamic baselining enhances communication integrity under conditions of environmental noise and the like. Wi... | 12/16/2008 |
| 7347145 | Dynamic baselining in current modulation-based communication Dynamic baselining of current modulation-based talkback from a slave device to a master device in a system such as an electronic blasting system, wherein the dynamic baselining enhances communication integrity under conditions of environmental noise and the like. Wi... | 03/25/2008 |
| 7322293 | Device and system for identifying an unknow or unmarked slave device such as in an electronic blasting system A system such as an electronic blasting system, and a slave device for use in the system, in which a command is issued by a master device to all slave devices connected to the system, causing all slave devices that have not been identified to the master device to re... | 01/29/2008 |
| 7239225 | Pyrotechnic circuit breaker A circuit breaker including a pyrotechnic element configured to ablate, tear, or cut a portion of the circuit. The portion of the circuit to be broken may be formed to be readily broken and/or may be a current load-based fuse. Also, the circuit breaker may be config... | 07/03/2007 |
| 7124688 | Overmolded body for pyrotechnic initiator and method of molding same A pyrotechnic initiator with an integral, unitary, overmolded insulating body that eliminates the need for separate components to form the body, and the method of molding same. ... | 10/24/2006 |
| 7123124 | Pyrotechnic circuit breaker A circuit breaker including a pyrotechnic element configured to ablate or cut a portion of the circuit so as to break the circuit, thereby breaking the circuit. The portion of the circuit to be broken may be specially formed to be readily ablated or cut, and/or may ... | 10/17/2006 |
| 7107908 | Firing-readiness diagnostic of a pyrotechnic device such as an electronic detonator Firing-readiness diagnostics in an electronic pyrotechnic device such as an electronic detonator or an electronic blasting system thereof. The diagnostics may include a check for any incompatible attached devices, a resistance or continuity check of an ignition elem... | 09/19/2006 |
| 7086334 | Staggered charging of slave devices such as in an electronic blasting system Selective, staggered charging of individual slave devices in a system at different times, such as electronic detonators in an electronic blasting system, so as to prevent excessive voltage drop on the bus. The staggered charging may be obtained through a clock-drive... | 08/08/2006 |
| 7082877 | Current modulation-based communication for slave device Current modulation-based talkback in a system in which the background noise in the level of current draw is minimized such that the talkback is effected with a desirably high signal-to-noise ratio, such as by the master device holding the system voltage low such tha... | 08/01/2006 |
| 7054131 | Pre-fire countdown in an electronic detonator and electronic blasting system An electronic detonator such as is used in electronic blasting systems, utilizing a pre-fire countdown, during which time other commands may be issued such as to conduct diagnostic tests or other measures to ensure more reliable and/or safer firing. ... | 05/30/2006 |
| 7047884 | Pyrotechnic initiator having output can with encapsulation material retention feature A pyrotechnic initiator is provided with an encapsulation material retention feature on the output can rather than on the header assembly. For example, the bottom of the output can of the pyrotechnic initiator may be swaged over the bottom of the header assembly and... | 05/23/2006 |
| 7017494 | Method of identifying an unknown or unmarked slave device such as in an electronic blasting system A system, for example an electronic blasting system, in which a command is issued by a master device to all slave devices connected to the system, causing all slave devices that have not been identified to the master device to respond with identifying information an... | 03/28/2006 |
| 7013807 | Current modulation-based communication for slave device Current modulation-based talkback in a system in which the background noise in the level of current draw is minimized such that the talkback is effected with a desirably high signal-to-noise ratio, such as by the master device holding the system voltage low such tha... | 03/21/2006 |
| 7004071 | Initiator with an internal sleeve retaining a pyrotechnic charge and methods of making same A pyrotechnic initiator having an internal sleeve that facilitates the loading and durable retention of a pyrotechnic charge in place on the header surface within the initiator. The sleeve beneficially retains the charge either in conjunction with the upper interior... | 02/28/2006 |
| 6988449 | Dynamic baselining in current modulation-based communication Dynamic baselining of current modulation-based talkback from a slave device to a master device in a system such as an electronic blasting system, wherein the dynamic baselining enhances communication integrity under conditions of environmental noise and the like. Wi... | 01/24/2006 |
| 6966262 | Current modulation-based communication from slave device Current modulation-based talkback in a system in which the background noise in the level of current draw is minimized such that the talkback is effected with a desirably high signal-to-noise ratio, such as by the master device holding the system voltage low such tha... | 11/22/2005 |
| 6964715 | High impetus, high burn rate gas generant propellant and seatbelt pretensioner incorporating same Gas generating compositions having a fuel preferably comprising a mixture of 5-aminotetrazole (5-AT), azodicarbonamide (ADCA), an oxidizer, and a superfine metal powder burn rate enhancer such as nano-aluminum, for use in automotive seatbelt pretensioners and other ... | 11/15/2005 |
| 6941867 | Initiator with a slip plane between an ignition charge and an output charge A pyrotechnic initiator having an initiator including a relatively low monolithic ignition charge that is separated from an overlying output charge by an intermediary slip plane. The slip plane may simply be a non-integral junction between monolithic ignition and ou... | 09/13/2005 |
| 6915744 | Pyrotechnic initiator with on-board control circuitry A pyrotechnic initiator with enclosed on-board control circuitry, and a mating connector therefor. ... | 07/12/2005 |
| 6907827 | Pyrotechnic initiator having output can with encapsulation material retention feature A pyrotechnic initiator is provided with an encapsulation material retention feature on the output can, such as a swaged end or anchors. ... | 06/21/2005 |
| 6892643 | Constant-current, rail-voltage regulated charging electronic detonator Regulated charging of an energy storage module in a pyrotechnic device such as a firing capacitor in an electronic detonator, preferably in the form of constant-current charging limited at a “rail voltage,” and optionally limited to a sufficiently low current to... | 05/17/2005 |
| 6848365 | Initiator with an internal sleeve retaining a pyrotechnic charge and methods of making same A pyrotechnic initiator having an internal sleeve that facilitates the loading and durable retention of a pyrotechnic charge in place on the header surface within the initiator. The sleeve beneficially retains the charge either in conjunction with the upper interior... | 02/01/2005 |
| 6789483 | Detonator utilizing selection of logger mode or blaster mode based on sensed voltages An electronic blasting system in which the electronic detonator, when attached to a blasting machine or logger, automatically senses and determines whether it is attached to a blasting machine or a logger, preferably by utilizing a different operating voltage for th... | 09/14/2004 |
| 6779456 | Initiator with a bridgewire configured in an enhanced heat-sinking relationship A pyrotechnic initiator having a bridgewire configured in an enhanced heat-sinking relationship with the adjacent ignition charge and/or header glass surface without the necessity of a consolidation force. ... | 08/24/2004 |
| 6763764 | Multi-unit pyrotechnic initiation system A multi-unit pyrotechnic initiation system includes two or more pyrotechnic initiators molded in place into a base. Each initiator preferably includes a body overmolded around an igniter. The retainers of two or more pyrotechnic initiators may be formed together as ... | 07/20/2004 |
| 6644198 | Integral pyrotechnic initiator with molded connector A pyrotechnic initiator has a molded connector with a hollow interior, where the connector includes at least one locking tab extending from the connector wall toward the centerline of the connector, overhanging the hollow interior of the connector. A mati... | 11/11/2003 |
| 6612241 | Pyrotechnic initiator with center pin having a circumferential notch retention feature Disclosed is a pyrotechnic initiator header having a center pin with a circumferential notch retention feature that enhances secure and effective disposition of an ignition pyrotechnic charge droplet to the header in the area of the bridgewire.... | 09/02/2003 |
| 6578487 | Pyrotechnic initiator with a narrowed sleeve retaining a pyrotechnic charge and methods of making same A pyrotechnic initiator with a narrowed sleeve attached to a header assembly and retaining a pyrotechnic charge, and methods of making same.... | 06/17/2003 |
| 6508175 | Pyrotechnic initiator for use in high pressure environments A pyrotechnic initiator adapted for insertion into a sealed gas unit includes an igniter over which a nonconductive body is molded. The nonconductive body resists the pressure inside a sealed gas unit and protects the igniter from that pressure. The body ... | 01/21/2003 |
| 6126764 | Powdered metal pyrotechnic fuel A pyrotechnic fuel material for a booster in a pyrotechnic system having an adjacent igniter. In one embodiment, a powdered BaAl4 compound is used as the booster pyrotechnic fuel. In another embodiment, a powdered zirconium/nickel alloy is used... | 10/03/2000 |
