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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 8134822 | Remote initiator for the remote initiation of explosive charges A remote initiator for the remote initiation of explosive charges. The remote initiator having: (i) a transmitter with means for generating and transmitting a coded signal and input means for inputting operational commands into the transmitter for generating the cod... | 03/13/2012 |
| 7881037 | Vehicle occupant protection apparatus An air bag device of the present invention includes squibs and a capacitor, an electric discharge circuit as well as a backup power supply, a voltage stabilizer and ignition circuits. The voltage stabilizer converts the voltage of the backup power supply to the pred... | 02/01/2011 |
| 7778006 | Wireless electronic booster, and methods of blasting Disclosed herein are boosters that include components sufficient for wireless communications with an associated blasting machine. In selected aspects, there are disclosed wireless electronic boosters that are self-contained and robust. Such boosters are especially s... | 08/17/2010 |
| 7755878 | Blast key A blast key which includes a body and a blast energy generator in or on the body. The blast key may include a body in the form of a small housing and may further comprise a switch connected to the energy generator. ... | 07/13/2010 |
| 7701694 | Armament fuse arrangement A highly reliable fuse for explosives and armaments is achieved by employing a micro mechanical device that operates to disrupt a relatively low impedance bypass circuit coupled in parallel with a relatively high impedance trigger mechanism. The removal of the elect... | 04/20/2010 |
| 7688566 | Electric firing device for fireworks An electric firing device for fireworks comprising a circuit board (7) fixed inside of a mounting clip (8); a firing slot (6) set in the front of the circuit board (7); a resistance wire (5) welded on the circuit board (7) t... | 03/30/2010 |
| 7679881 | Electrical entity with opening of the load current circuit in an explosion-vulnerable environment There is described an electrical system including a device which features a load current circuit and connection terminals for connection of the load current circuit. In the supply line to the connection terminals, separation contacts are present for separating the l... | 03/16/2010 |
| 7505244 | Micro-switches for downhole use A downhole tool includes a device to be activated by electrical energy and a micro-switch that includes conductors and an element between the first and second conductors selected from the group consisting of: a dielectric element capable of being modulated to provid... | 03/17/2009 |
| 7370513 | System and method for monitoring features of a blast A method of monitoring a feature of a blast such as velocity of detonation (VOD) comprises the steps of providing a detonator 16.1 at a blast site 12. Prior to the blast, a blast control signal path 20, 18.1 is utilized to communicate blast cont... | 05/13/2008 |
| 7336474 | Microelectromechanical devices An apparatus includes a switch comprising microelectromechanical elements, the microelectromechanical elements including a sealed chamber containing a dielectric element, and conductors in the sealed chamber. The conductors are arranged such that application of grea... | 02/26/2008 |
| 7327550 | Frequency diversity remote controlled initiation system A blasting system includes a wireless link between a blast controller and a plurality of electronic detonators. Each detonator includes a respective electronic initiator and an explosive charge. Charge storage devices of the initiators are chargeable by a carrier of... | 02/05/2008 |
| 7301750 | Electronic switching system for a detonation device, method of operation and explosive device including the same An apparatus for electronically switching a detonation device is configured to arm an energy source upon receiving a first signal and discharge the energy source to the detonation device upon receiving and validating a second signal. An explosive device comprising a... | 11/27/2007 |
| 7285939 | DC-DC converter for boosting input voltage at variable frequency A DC-DC converter for boosting an input voltage to a higher output voltage includes an inductor, a field effect transistor, a first ON signal generating circuit, a second ON signal generating circuit, an OFF signal generating circuit, a transistor driving signal gen... | 10/23/2007 |
| 7267056 | Initiator An initiator includes, as constitutive components, a pair of electrodes disposed with an insulator disposed therebetween; a bridge wire connected between the pair of electrodes and adapted to generate heat when energized; an explosive which detonates in response to ... | 09/11/2007 |
| 7230814 | Digital squib An intelligent switch system, a so-called squib, for providing power to sensitive equipment, such as missiles, rockets and the like, comprises a pair of serially connected power switches which are separately and sequentially enabled and which will not deliver power ... | 06/12/2007 |
| 7191706 | Optically triggered fire set/detonator system The present invention is directed to a system having a plurality of capacitor discharge units (CDUs) that includes electrical bridge type detonators operatively coupled to respective explosives. A pulse charging circuit is adapted to provide a voltage for each respe... | 03/20/2007 |
| 7161790 | Ignition device for bus connection A plurality of the ignition devices are connected to an ignition control system via a common bus. The ignition devices are selectively operable for actuating a plurality of airbag devices by means of electrical energy and an electrical signal supplied from the ignit... | 01/09/2007 |
| 7154732 | Apparatus and system for controlling a squib firing device A squib firing device is constructed to test and fire a squib load being applied to the squib firing device. A power supply of the squib firing device conditionally stores and discharges a squib firing power, which is a function of an analog OR of a first voltage fr... | 12/26/2006 |
| 7154733 | Low cost squib driver for airbag application A circuit and a method are given, to realize a very efficient driver device for igniters or squibs as used e.g. in airbag applications. Special attention has been turned to include secure and always reliable operating features into the device and at the same time to... | 12/26/2006 |
| 7116542 | Micro-switches for downhole use A downhole tool includes a device to be activated by electrical energy and a micro-switch that includes conductors and an element between the first and second conductors selected from the group consisting of: a dielectric element capable of being modulated to provid... | 10/03/2006 |
| 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 |
| 7100511 | Dual redundancy system for electronic detonators A detonator assembly (10) comprising a housing (12) disclosed and claimed. The assembly comprises an main circuit (11) comprising an electrically operable fuse (16) located in the housing. The assembly further comprises at least a first r... | 09/05/2006 |
| 7089697 | Trigger transition filter for a paintball marker A method of preventing trigger bounce during the launching of a projectile by a projectile launcher includes the step of first providing a projectile launcher having a trigger capable of actuating between a full non-firing position and a full firing position. An amo... | 08/15/2006 |
| 7007756 | Providing electrical isolation for a downhole device An isolation apparatus is provided between an electrical conductor and an electrically-activated well tool. The isolation apparatus has a blocking element to enable a signal having a first electrical polarity to pass through the element. The blocking element blocks ... | 03/07/2006 |
| 6992877 | Electronic switching system for a detonation device An apparatus for electronically switching a detonation device is configured to arm an energy source upon receiving a first signal and discharge the energy source to the detonation device upon receiving and validating a second signal. An explosive device comprising a... | 01/31/2006 |
| 6962112 | Entirely combustible inductive primer A pyrotechnical primer for igniting propellant powder for sleeveless ammunition comprises an igniting element (4) and a coil (1). The energy required for triggering is transmitted in an electromagnetic manner (inductively). The inductive primer is cost... | 11/08/2005 |
| 6925938 | Electro-explosive device with laminate bridge A semiconductor bridge (SCB) device. In one embodiment, the SCB device includes a laminate layer on top of an insulating material, wherein the laminate layer comprises a series of layers of at least two reactive materials, and wherein the laminate layer comprises tw... | 08/09/2005 |
| 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 |
| 6781813 | Release element for initiating pyrotechnics An electronic releasing device for pyrotechnic igniters has a primary and a secondary charge. The primary charge is ignited by means of a circuit that comprises electronic components and whose essential electronic components are accommodated as an integrated compone... | 08/24/2004 |
| 6650528 | Ignition device for a safety system A safety system ignition device (1) having an igniter housing (3), an open housing (9), and an ignition element (2) with a; least two contact lugs (7 and 9) that are positioned in the open housing (9). Disposed from and into the ignition housing are at le... | 11/18/2003 |
| 6611424 | Housing of data processing system with mechanism for easy removal and insertion of disk drive A housing of a data processing system with a mechanism for easy removal and insertion of a disk drive, comprises a shell, two opposite guiding plates, a rear plate, and a front plate. A front section of each guiding plate has at least a step-shaped guidin... | 08/26/2003 |
| 6476464 | Low resistance hermetic lead structure The invention provides a lead structure having a lead of low resistance material disposed within a surrounding sleeve or collar of low expansion material which is bonded at one end to the lead. The sleeve or collar is bonded on its outer surface to an ins... | 11/05/2002 |
| 6385031 | Switches for use in tools A switch for use in various applications, including downhole applications, includes a first conductor and a second conductor and an insulator electrically isolating the first and second conductors. A device responsive to an applied voltage generates a pla... | 05/07/2002 |
| 6351376 | Computer data storage device mounting apparatus A mounting apparatus for mounting a data storage device in a computer housing includes a bracket, a securing means and a flexible plate. The bracket has a first face for supporting a data storage device, a second face opposite the first face and locking h... | 02/26/2002 |
| 6166452 | Igniter An igniter for igniting a reactive material has a conductor for conducting power and communication signals to and from the igniter. A controller is located within the igniter. The controller is preferably an application specific integrated circuit (ASIC).... | 12/26/2000 |
| 6146598 | Initiator unit having a self locking two wire connector for pyrotecnic generators The present invention relates to a two-wire pyrotechnic initiator unit intended for motor-vehicle safety. The initiator unit comprises a socket molded over electrodes which are connected, on the one hand, to a pyrotechnic ignition device and, on the other... | 11/14/2000 |
| 5920029 | Igniter assembly and method An electrically conductive system including an apparatus and method wherein an electric current is sealingly passed through at least two spaced insulatively sealed zones with an insulatively sealed void space provided therebetween under a vacuum and servi... | 07/06/1999 |
| 5912427 | Semiconductor bridge explosive device This invention discloses a method of fabricating an electroexplosive device which utilizes a semiconductor bridge as an ignition element. The semiconductor bridge is electrically connected to a metal header by a small, low resistance contact to the extens... | 06/15/1999 |
| 5672841 | Inflator initiator with zener diode electrostatic discharge protection An initiator with electrostatic discharge protection includes a generally cup-shaped housing having an open end, a quantity of pyrotechnic material in the housing, and a seal for closing the housing open end and encapsulating the pyrotechnic material with... | 09/30/1997 |
| 5517920 | Device for sequentially firing electrical detonators The invention concerns a device for the sequential firing of electrical detonators in several firing circuits, the device consisting of a detonating machine, electric leads and switches for activating the firing circuits. The detonating machine (1) is con... | 05/21/1996 |
