Patents in Class 361/251

Matches 1 - 50 out of 91

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Match	Document	Document Title
1	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...
2	7490552	MEMS microdetonator/initiator apparatus for a MEMS fuze A MEMS apparatus having a substrate layer, a device layer and an intermediate oxide layer joining them. A slider is formed in the device layer and includes an enlarged end portion. A walled chamber...
3	7466532	Ignition circuit for squib An ignition circuit for squib for igniting a squib which has a heat producing portion that includes an electrically conductive portion and a fuel portion, and transmits a heat produced by supplying...
4	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....
5	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...
6	7322292	Squib A squib that is used by being connected to a bus is formed by assembling an explosive unit and a communication/ignition unit that have been constructed as separate components. The...
7	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...
8	7116543	Apparatus for supplying electric energy to explosion cartridge An electric power supplying apparatus for a rock explosion cartridge is disclosed. The apparatus includes the following elements. A power source generates an electric energy. A plurality of...
9	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...
10	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...
11	7021218	Safety and performance enhancement circuit for primary explosive detonators A safety and performance enhancement arrangement for primary explosive detonators. This arrangement involves a circuit containing an energy storage capacitor and preset self-trigger to protect the...
12	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...
13	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...
14	6268775	Dual capacitor oscillator circuit An electronic delay circuit (10) useful for the delayed initiation of detonators illustrates several novel features that may be combined, including a novel oscillator (34), a programmable timer...
15	5721391	Electronic firing circuit A firing circuit that is used for a lightweight launcher for propelling rets is disclosed. The firing circuit generates a pulse for firing the rocket launcher and comprises first and second...
16	5571985	Sequential blasting system A sequential blasting system for use in particular in mining comprises a plurality of detonator stages S1, S2, . . . , each of which contains a series circuit consisting of a thyristor T and a...
17	5510952	Ignition system using multiple gated switches with variable discharge energy levels and rates An ignition system for a gas turbine engine includes a plurality of igniters, an energy storage capacitance, a charging circuit for charging the capacitance, a plurality of gated switches, with at...
18	5440991	Miniature self contained firing system Each of first and second switches, preferably ganged, have first and second operative relationships. In the first operative relationship, the first switch is connected across a firing device to...
19	5415100	Apparatus and method for setting missile fuze delay A digital-to-analog converter provides a dc voltage to a fuze setting circuit which is proportional to the desired delay to be set. A digital controller operates the digital-to-analog converter...
20	5367428	Integrated safety discharge module An integrated safety discharge module for providing a high voltage high current pulse to a load includes a capacitor and a bleed resistor, The capacitor is connected to the bleed resistor by such...
21	5335598	Timing and firing circuitry First and second ganged switches having first and second operative relationships are normally operative in the first relationship and are actuated by an external mechanism to the second...
22	5249095	Laser initiated dielectric breakdown switch A high voltage, laser light initiated, dielectric breakdown switch for use n safe and arm systems for initiating exploding foil initiators. One electrode has an opening which allows light from a...
23	5148346	EMI protected water-activated pressurized gas release apparatus Water-activated pressurized gas release apparatus which has enhanced protection from the effects of EMI radiation which may inadvertently cause firing thereof. The apparatus is enclosed in a pair...
24	5146104	Electronic device for triggering a safety device An electronic device for triggering safety devices 10 comprises a firing element ZP which is connected in series to a capacitor ZK. The firing element ZP is acted upon by currents from controllable...
25	5023556	Sensor circuit response to different fluid conductivities and having time delay feature A circuit for operating a load in response to predetermined external conductivity conditions comprising a pair of sensing electrodes, a source of electrical energy connected to one of the...
26	4853637	Fluid conductivity sensor for actuating an electroexploding device Apparatus for sensing the electrical conductivity of fluid wherein when electrodes of the apparatus are exposed to fluid a voltage is developed on a capacitor which voltage has a magnitude...
27	4827844	Electronic firing circuit A circuit for operating a load device comprising an operating circuit including an energy storage device for providing electrical energy for operating the device and a voltage responsive switch...
28	4768128	Water activated pressurized gas release device An improved, low cost, water activated pressurized gas release device utilized for inflating flotation equipment, such as life jackets, when dumped into the water. The device includes a one piece...
29	4768127	Ignition system A plurality of electric blasting caps are fired through the ignition system which includes a transformer having a primary winding and a secondary winding. The secondary winding of the transformer...
30	4763077	Sensor circuit responsive to different fluid conductivities A circuit for operating a load in response to predetermined external conductivity conditions including a pair of sensing electrodes, a source of electrical energy connected to one of the...
31	4703280	Fluid conductivity sensor controlling an electro explosive device A circuit for sensing the electrical conductivity of fluid comprising a pair of electrodes adapted to be exposed to the fluid, a voltage source connected to one of the electrodes, a load connected...
32	4700263	Safe-arm system with electrical charge transfer circuit A safe-arm system for an explosive munition is provided which is in the form of a charge transfer circuit, including a low-voltage capacitor bank which over a relatively long period of time is...
33	4641580	Circuit apparatus for operating fireworks ignition A circuit apparatus for operating firewirks ignition is used by connecting with a fireworks ignition circuit with a group of ignition ball terminals lined up as multi-step and multi-file...
34	4517497	Capacitor discharge apparatus A capacitor discharge apparatus of the kind having a spark gap device for discharging a capacitor to provide a current impulse for conduction through a load. The capacitor and spark gap device both...
35	4513248	Fluid conductivity sensor Apparatus for sensing the electrical conductivity of fluid which can be used to detonate an electro explosive device for operating a release mechanism for uncoupling a parachute canopy from its...
36	4482858	Apparatus for and a method of testing detonating systems An apparatus for and a method of testing AC operable detonating modules (10) whereby an electric charge is discharged through a primary wire (20) threaded through or around a transformer core (14)...
37	4157069	Initiation of blasting detonators A method and device for the initiating of a number of electrical detonators by a blasting machine of the type in which a capacitor is charged, the level of the charge being measured by...
38	4089035	Hand-held detonator The specification discloses a hand-held detonator or blasting device which includes a rigid housing dimensioned to be held in the hand of an operator. A pair of binding posts extend from the...
39	4041865	Method and apparatus for detonating explosives A detonating device principally intended for detonating an explosive charge in a well or borehole, and of the type which is actuated by pulling upwardly on a non-electrical line also used to lower...
40	4024440	Water activated pressurized gas release device A water activated pressurized gas release device, especially suited for automatically controlling the release of the pressurized gas for inflating flotation equipment when dumped into water, which...
41	4022131	Electrically-operated release apparatus A release apparatus, for example for releasing fire extinguishant, comprises an electrically-rupturable link such as, for example, an electrically-fired detonator; and a circuit responsive to a...
42	3892182	Squib control circuit A control and indicating circuit for use with squib operated explosive units. The squib filaments are each connected in series with a relay winding and a small current applied to the circuit. This...
43	3886866	Capacitor - contact fuze system A contact fuzing system having an acceleration-responsive variable capaci for initiating detonation. The capacitor is connected in parallel with a detonator and an electrical switch. One plate of...
44	3878790	SEISMIC BLASTER CIRCUIT An electronic shooting circuit for seismic operations. It employs a silicon controlled rectifier for delivering maximum current instantaneously to one or more electric blasting caps that are being...
45	3863132	EFFICIENT DC/DC CONVERTER FOR A SOLID STATE FUZE A DC/DC converter for transforming a high voltage to a lower voltage level or use in a solid state electrical time fuze. It comprises a constant charging network to charge a capacitor, which when...
46	3851589	ELECTRONIC DELAY BLASTER Solid-state electronic system for use in timing precisely the detonation of a plurality of explosive charges in order to shape a seismic energy pulse produced thereby. It has a firing circuit for...
47	3834310	REMOTE CONTROL CIRCUIT AND APPARATUS FOR EXPLODING EXPLOSIVES A remote control circuit and apparatus for exploding explosives. Electric power generated at a resonance circuit when it is tuned to a control electromagnetic field is used to charge an ignition...
48	3757697	REMOTELY CONTROLLED BLASTING MACHINE A remotely controlled blasting machine for detonating explosives. The blasting machine is divided into two modules which are the remote control module and the energy storage module. The energy...
49	3752081	BLASTING MACHINE A blasting machine for firing an explosive bridge wire device or the like. The firing circuit of the apparatus includes a trigger pulse generating circuit that does not generate trigger pulses...
50	3721886	BLASTING MACHINE WITH OVERVOLTAGE AND UNDERVOLTAGE PROTECTION FOR THE ENERGY STORAGE CAPACITOR A blasting machine for firing an explosive bridge wire device or the like. The blasting machine includes a storage capacitor that is charged to an energy level within a predetermined range. The...

Matches 1 - 50 out of 91

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