Abstract

A device which is used to position a detonator assembly in a borehole. The device has a housing with an open mouth into which one end of the detonator assembly is inserted, formations on the housing which then engage with the detonator assembly, and flexible elements which extend from the housing and which are configured, in use, to engage with a wall of a borehole into which the device and the detonator assembly are inserted.

IPC Classes  ?

• F42D 1/22 - Means for holding or positioning blasting cartridges or tamping cartridges in boreholes

Abstract

A method of transmitting a TTE signal to each of a plurality of detonator assemblies in a blasting system wherein the method includes the step of simultaneously transmitting the TTE signal from each of a plurality of transmitters which are configured to function in synchronism such that a first TTE signal from a first transmitter received by a detonator assembly should be in phase with a second TTE signal from a second transmitter which is received by the same detonator assembly, to within half a wavelength at an operating frequency which is the same for all the transmitters.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting

Abstract

A blasting system (10) at a blast site (12) wherein each detonator assembly (20), in a borehole (16), is responsive to a through-the-earth fire signal from a blast controller (34), and can engage in bidirectional communication via at least one interface device (26) with an interrogating device (44), such as a tagger, at the blast site.

IPC Classes  ?

• F42D 1/045 - Arrangements for electric ignition

Abstract

A detonator assembly which includes a holder, a flexible elongate element which is engaged with the holder, a detonator connected to the element, an energy storage device on the holder and a coil arrangement for charging the energy storage device when the coil arrangement is coupled to a variable electromagnetic field.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting
• F42B 3/22 - Elements for controlling or guiding the detonation wave, e.g. tubes
• F42D 1/22 - Means for holding or positioning blasting cartridges or tamping cartridges in boreholes

Abstract

A wireless detonator initiating arrangement (10) which includes a first housing (20) which contains a receiver (24) and a signal processor (28), a second housing (36) which contains an explosive (38), a casing (52) which contains an initiator (16) which is responsive to the signal processor (28) to ignite the explosive (38) and a third housing (46) which contains a power source (50) to power the signal processor (28).

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay

Abstract

Apparatus, for use in a wireless detonator system, which includes a portable housing, a bank of capacitors in the housing, first terminals for connection to selected capacitors to an antenna in the system, second terminals for connection to a transmitter, and a measurement and output arrangement which provides signals which indicate the integrity of such connections.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting

Abstract

A communication module which is linked to a detonator which is initiated in response to a fire command signal, and wherein the communication module includes a transmitter which transmits a wireless signal which is dependent upon initiation of the detonator and which contains or conveys an identifier which uniquely identifies the detonator.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 5/02 - Locating undetonated charges

Abstract

A method of obtaining velocity of detonation (VOD) information from a borehole wherein an explosive in the borehole is ignited by initiation of a detonator, the method including the steps of using a control circuit which obtains a measurement of the VOD and which is subsequently destroyed by ignition of the explosive, and of transmitting from the borehole a wireless signal which contains the VOD measurement and data which identifies the borehole before the control circuit is destroyed.

IPC Classes  ?

• F42D 5/02 - Locating undetonated charges
• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay

Abstract

A mixed blasting system which includes a master blast controller, a first controller which is in signal communication with the master blast controller, a plurality of wired detonators which are in wired communication with the first controller, at least one of the wired detonators including a memory module for storing an identifier, a second controller which is in signal communication with the master blast controller, and a transmitter and antenna arrangement which is under the control of the second controller and which is in communication with a plurality of wireless detonators each of which includes a respective memory module for storing an identifier.

IPC Classes  ?

• F42D 1/04 - Arrangements for ignition
• F42D 1/05 - Electric circuits for blasting

Abstract

A wireless detonator system which includes groups of detonators at a blast site, wherein a unique key is transferred to each detonator in a group which is tagged by a tagger which transmits data on the tagged detonators to a data collection point at which identifiers of the tagged detonators are compared to a master blast plan to identify inconsistencies between the tagged detonators, at the blast site, and detonators which are recorded in the master blast plan.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 3/04 - Particular applications of blasting techniques for rock blasting

Abstract

A detonator assembly wherein an electronic detonator, upon receipt of a wireless signal, is used to initiate several pyrotechnic detonators.

IPC Classes  ?

• F42D 1/04 - Arrangements for ignition
• F42D 3/04 - Particular applications of blasting techniques for rock blasting

Abstract

A method of communicating in a blast system which includes the steps of transmitting timing signals from a master transceiver to a plurality of local transceivers, in response, at each local transceiver, defining a succession of micro-slots and calculating a size of a respective bin which is associated with each micro-slot, transmitting a packet from the master transceiver, at each local transceiver calculating a uniform random value, identifying the bin in which the uniform random value is located and during the micro-slot which is associated with the identified bin, if no transmission of a reply signal from any other local transceiver is detected, in response to the packet transmitting a reply signal from the local transceiver to the master transceiver.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting

Abstract

A blasting system (10) wherein a test through-the-earth signal of predetermined strength is sent from a defined position and the strength of the signal, as received at each of a plurality of locations (24) within a blast site, is measured thereby to enable an operative zone (56) to be defined wherein at any location within the operative zone a fire command through-the-earth magnetic signal, of such predetermined strength, transmitted from the defined position, as received at such location, will have a strength above a threshold signal strength.

IPC Classes  ?

• F42D 1/045 - Arrangements for electric ignition

Abstract

A detonator assembly which includes a detonator arrangement comprising a detonator, a receiver which is responsive to a magnetic signal from a control centre and a control circuit which, in response to a signal from the receiver, regulates firing of the detonator, and which is characterised in that a fibre optic cable is connected to and extends from the detonator arrangement, and in that the detonator arrangement includes a transmitter/receiver module which is in signal communication with the fibre optic cable and the control circuit.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting

Abstract

An electronic detonator which has a conductive housing which, in the event of a misfire of the detonator, is deformed by an external blast to form a part of a circuit which allows for the detonator to be fired.

IPC Classes  ?

• F42C 19/14 - Primers; Detonators electric operable also in the percussion mode
• F42D 5/04 - Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
• F42C 19/06 - Electric contact parts specially adapted for use with electric fuzes

Abstract

A monitoring arrangement in a detonator system which uses one or more sensors to detect various conditions at a blast site, and transmitters which transmit data on the detected conditions to a control center.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay

Abstract

A blasting system which includes a number of roving GPS receivers, and associated taggers, which communicate with one another and with a control mechanism, and a reference GPS receiver which transmits RTCM corrective positional data which is stored at each roving GPS receiver to improve the accuracy of coordinate determinations for boreholes.

IPC Classes  ?

• F42D 1/02 - Arranging blasting cartridges to form an assembly
• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay

Abstract

In a blasting system a method of determining which borehole in a plurality of boreholes at a blast site is closest to a tagger, wherein latitude and longitude coordinate values for each borehole are determined and by using subsets of the longitude coordinates and latitude coordinates, and by performing a haversine calculation the position of the borehole which is closest to the tagger is determined.

IPC Classes  ?

• G01S 19/51 - Relative positioning
• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay

Abstract

A safety arrangement for a wireless blasting system which includes a plurality of wireless detonator assemblies located at a blast zone wherein each route which provides access to the blast zone is monitored to detect removal of a wireless detonator assembly which is in an operative mode from the blast zone.

IPC Classes  ?

• F42D 5/00 - Safety arrangements
• F42D 1/05 - Electric circuits for blasting

Abstract

The invention provides a detonator which includes an oscillator, and a memory unit in which is stored a first measurement which is based on the frequency of oscillation of the oscillator at a first temperature and a second measurement which is based on the frequency of oscillation of the oscillator at a second temperature. The invention further extends to a method of monitoring a temperature in a borehole which includes the steps of using the first and second frequency measurements and the first and second temperatures to establish a frequency versus temperature relationship for the oscillator, placing the oscillator into the borehole, obtaining a third measurement of the frequency of oscillation of the oscillator while it is in the borehole, and using said frequency versus temperature relationship and the third frequency measurement to determine the temperature of the oscillator at the time the third frequency measurement was obtained.

IPC Classes  ?

• E21B 47/07 - Temperature
• F42C 11/06 - Electric fuzes with time delay by electric circuitry
• F42D 1/08 - Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor

Abstract

The invention provides a detonator which includes an oscillator, and a memory unit in which is stored a first measurement which is based on the frequency of oscillation of the oscillator at a first temperature and a second measurement which is based on the frequency of oscillation of the oscillator at a second temperature. The invention further extends to a method of monitoring a temperature in a borehole which includes the steps of using the first and second frequency measurements and the first and second temperatures to establish a frequency versus temperature relationship for the oscillator, placing the oscillator into the borehole, obtaining a third measurement of the frequency of oscillation of the oscillator while it is in the borehole, and using said frequency versus temperature relationship and the third frequency measurement to determine the temperature of the oscillator at the time the third frequency measurement was obtained.

IPC Classes  ?

• E21B 47/07 - Temperature
• F42D 1/08 - Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
• F42B 3/00 - Blasting cartridges, i.e. case and explosive
• F42C 11/06 - Electric fuzes with time delay by electric circuitry

Abstract

A device which is used to position a detonator assembly in a borehole. The device has a housing with an open mouth into which one end of the detonator assembly is inserted, formations on the housing which then engage with the detonator assembly, and flexible elements which extend from the housing and which are configured, in use, to engage with a wall of a borehole into which the device and the detonator assembly are inserted.

IPC Classes  ?

• F42D 1/22 - Means for holding or positioning blasting cartridges or tamping cartridges in boreholes

Abstract

A device which is used to position a detonator assembly in a borehole. The device has a housing with an open mouth into which one end of the detonator assembly is inserted, formations on the housing which then engage with the detonator assembly, and flexible elements which extend from the housing and which are configured, in use, to engage with a wall of a borehole into which the device and the detonator assembly are inserted.

IPC Classes  ?

• F42D 1/22 - Means for holding or positioning blasting cartridges or tamping cartridges in boreholes

Abstract

A detonator assembly which includes a holder, a flexible elongate element which is engaged with the holder, a detonator connected to the element, an energy storage device on the holder and a coil arrangement for charging the energy storage device when the coil arrangement is coupled to a variable electromagnetic field.

IPC Classes  ?

• F42D 1/22 - Means for holding or positioning blasting cartridges or tamping cartridges in boreholes
• F42B 3/22 - Elements for controlling or guiding the detonation wave, e.g. tubes
• F42D 1/04 - Arrangements for ignition

Abstract

A detonator assembly which includes a holder, a flexible elongate element which is engaged with the holder, a detonator connected to the element, an energy storage device on the holder and a coil arrangement for charging the energy storage device when the coil arrangement is coupled to a variable electromagnetic field.

IPC Classes  ?

• F42D 1/22 - Means for holding or positioning blasting cartridges or tamping cartridges in boreholes
• F42D 1/04 - Arrangements for ignition
• F42B 3/22 - Elements for controlling or guiding the detonation wave, e.g. tubes

Abstract

A wireless detonator initiating arrangement (10) which includes a first housing (20) which contains a receiver (24) and a signal processor (28), a second housing (36) which contains an explosive (38), a casing (52) which contains an initiator (16) which is responsive to the signal processor (28) to ignite the explosive (38) and a third housing (46) which contains a power source (50) to power the signal processor (28).

IPC Classes  ?

• F42D 3/04 - Particular applications of blasting techniques for rock blasting
• F42B 3/10 - Initiators therefor
• F42C 15/42 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically from a remote location, e.g. for controlled mines or mine fields
• F42D 1/02 - Arranging blasting cartridges to form an assembly
• F42D 1/05 - Electric circuits for blasting
• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay

Abstract

A wireless detonator initiating arrangement (10) which includes a first housing (20) which contains a receiver (24) and a signal processor (28), a second housing (36) which contains an explosive (38), a casing (52) which contains an initiator (16) which is responsive to the signal processor (28) to ignite the explosive (38) and a third housing (46) which contains a power source (50) to power the signal processor (28).

IPC Classes  ?

• F42D 3/04 - Particular applications of blasting techniques for rock blasting
• F42D 1/05 - Electric circuits for blasting
• F42B 3/10 - Initiators therefor
• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42C 15/42 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically from a remote location, e.g. for controlled mines or mine fields
• F42D 1/02 - Arranging blasting cartridges to form an assembly

Abstract

A wireless detonator arrangement wherein an initiator is positioned between a power supply and a housing which contains an explosive and through which extends conductors which connect a signal processor to the power supply and to the initiator.

IPC Classes  ?

• F42D 3/04 - Particular applications of blasting techniques for rock blasting
• F42B 3/10 - Initiators therefor
• F42C 15/42 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically from a remote location, e.g. for controlled mines or mine fields
• F42D 1/02 - Arranging blasting cartridges to form an assembly
• F42D 1/05 - Electric circuits for blasting
• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay

Abstract

A wireless detonator arrangement wherein an initiator is positioned between a power supply and a housing which contains an explosive and through which extends conductors which connect a signal processor to the power supply and to the initiator.

IPC Classes  ?

• F42D 3/04 - Particular applications of blasting techniques for rock blasting
• F42D 1/05 - Electric circuits for blasting
• F42B 3/10 - Initiators therefor
• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42C 15/42 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically from a remote location, e.g. for controlled mines or mine fields
• F42D 1/02 - Arranging blasting cartridges to form an assembly

Abstract

A wireless detonator system wherein a blast control unit communicates bidirectionally with at least one tagger and with detonators, prior to deployment thereof, using a NFC technique, and a transmitter/receiver assembly communicates with each detonator atan ultralow frequency.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 3/04 - Particular applications of blasting techniques for rock blasting

Abstract

A communication module which is linked to a detonator which is initiated in response to a fire command signal, and wherein the communication module includes a transmitter which transmits a wireless signal which is dependent upon initiation of the detonator and which contains or conveys an identifier which uniquely identifies the detonator.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 5/02 - Locating undetonated charges

Abstract

A communication module which is linked to a detonator which is initiated in response to a fire command signal, and wherein the communication module includes a transmitter which transmits a wireless signal which is dependent upon initiation of the detonator and which contains or conveys an identifier which uniquely identifies the detonator.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 5/02 - Locating undetonated charges

Abstract

A method of obtaining velocity of detonation (VOD) information from a borehole wherein an explosive in the borehole is ignited by initiation of a detonator, the method including the steps of using a control circuit which obtains a measurement of the VOD and which is subsequently destroyed by ignition of the explosive, and of transmitting from the borehole a wireless signal which contains the VOD measurement and data which identifies the borehole before the control circuit is destroyed.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 5/02 - Locating undetonated charges

Abstract

A method of obtaining velocity of detonation (VOD) information from a borehole wherein an explosive in the borehole is ignited by initiation of a detonator, the method including the steps of using a control circuit which obtains a measurement of the VOD and which is subsequently destroyed by ignition of the explosive, and of transmitting from the borehole a wireless signal which contains the VOD measurement and data which identifies the borehole before the control circuit is destroyed.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 5/02 - Locating undetonated charges

Abstract

Apparatus, for use in a wireless detonator system, which includes a portable housing,a bank of capacitors in the housing, first terminals for connection to selected capacitors to an antenna in the system, second terminals for connection to a transmitter, and a measurement and output arrangement which provides signals which indicate the integrity of such connections.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting

Abstract

Apparatus, for use in a wireless detonator system, which includes a portable housing,a bank of capacitors in the housing, first terminals for connection to selected capacitors to an antenna in the system, second terminals for connection to a transmitter, and a measurement and output arrangement which provides signals which indicate the integrity of such connections.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting

Abstract

A wireless detonator assembly which includes a detonator, a receiver, a printed circuit board with a stored key which is hardwired onto the board during manufacture of the detonator assembly and control logic which allows the detonator to be fired only if the control logic extracts from a signal, received by the receiver, a reference key which is identical to the stored key.

IPC Classes  ?

• F42C 15/42 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically from a remote location, e.g. for controlled mines or mine fields
• F42D 1/05 - Electric circuits for blasting

Abstract

A blasting system which includes a plurality of detonators located in respective boreholes each detonator being capable of two-way communication, and wherein a signal from control equipment is relayed from one detonator to another and then to a target detonator.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 3/04 - Particular applications of blasting techniques for rock blasting

Goods & Services

Downloadable computer software, namely, software for the use and operation of detonators or other instruments and tools used to ignite explosives or initiate explosive blasts and explosions. Electronic blasting systems, namely, remote controlled wireless electronic transmitter and receiver devices and programmable electronic detonators used to detonate explosives; Electronic programmable blasting control devices and electronic blasting devices.

Goods & Services

(1) Electronic blasting systems, namely, remote controlled wireless electronic transmitter and receiver devices and programmable electronic detonators used to detonate explosives; Electronic programmable blasting control devices and electronic blasting devices; downloadable computer software, namely, software for the use and operation of detonators or other instruments and tools used to ignite explosives or initiate explosive blasts and explosions

Goods & Services

Electronic blasting systems, namely, remote controlled wireless electronic transmitter and receiver devices used to receive and transmit data transmissions directed to program and initiate electronic detonators and programmable electronic detonators being electronic controls used to detonate explosives for blasting operations in the surface and underground mining industry; Electronic programmable blasting control devices being electronic controllers for use with electronic blasting devices being detonators; downloadable computer software, namely, software for the use in the control and operation of detonators and other electronic ignition instruments and tools used to ignite explosives or initiate explosive blasts and explosions for blasting operations in the surface and underground mining industry

Goods & Services

Detonators; electronic delay detonator for initiation of explosives; detonating relays for the use with detonators, electronic detonator systems comprising delay detonators Electronic controls for electronic detonator and electronic delay detonator systems comprising computer peripherals devices and recorded computer software programs for controlling blasting operations in the mining industry, and not including video cameras; detonation control systems comprising computer peripheral devices and recorded computer software programs for controlling blasting operations of electronic delay detonators in the mining industry, and not including video cameras

Abstract

A blasting system which includes a blast site with a perimeter which surrounds the blast site, a plurality of spaced apart boreholes at the blast site, a plurality of detonator assemblies, each detonator assembly being positioned in a respective borehole, each detonator assembly including a respective receiver which is responsive to a magnetic signal transmitted from a control device and received by the receiver, a plurality of magnetic field strength meters (MFSMs) positioned at spaced apart locations on the perimeter, each MFSM including a respective unique identifier, each MFSM in response to a magnetic signal detected by the MFSM, producing a respective data signal which is dependent on the strength of the detected magnetic signal and which includes said unique identifier, and a communication arrangement for transmitting said data signals from said MFSMs to a data collection point.

IPC Classes  ?

• F42D 1/045 - Arrangements for electric ignition

Abstract

A detonator assembly which includes a detonator arrangement comprising a detonator, a receiver which is responsive to a magnetic signal from a control centre and a control circuit which, in response to a signal from the receiver, regulates firing of the detonator, and which is characterised in that a fibre optic cable is connected to and extends from the detonator arrangement, and in that the detonator arrangement includes a transmitter/receiver module which is in signal communication with the fibre optic cable and the control circuit.

IPC Classes  ?

• F42D 1/045 - Arrangements for electric ignition

Abstract

A blasting system which includes a blast site with a perimeter which surrounds the blast site, a plurality of spaced apart boreholes at the blast site, a plurality of detonator assemblies, each detonator assembly being positioned in a respective borehole, each detonator assembly including a respective receiver which is responsive to a magnetic signal transmitted from a control device and received by the receiver, a plurality of magnetic field strength meters (MFSMs) positioned at spaced apart locations on the perimeter, each MFSM including a respective unique identifier, each MFSM in response to a magnetic signal detected by the MFSM, producing a respective data signal which is dependent on the strength of the detected magnetic signal and which includes said unique identifier, and a communication arrangement for transmitting said data signals from said MFSMs to a data collection point.

IPC Classes  ?

• F42D 1/045 - Arrangements for electric ignition

Abstract

A detonator assembly which includes a detonator arrangement comprising a detonator, a receiver which is responsive to a magnetic signal from a control centre and a control circuit which, in response to a signal from the receiver, regulates firing of the detonator, and which is characterised in that a fibre optic cable is connected to and extends from the detonator arrangement, and in that the detonator arrangement includes a transmitter/receiver module which is in signal communication with the fibre optic cable and the control circuit.

IPC Classes  ?

• F42D 1/045 - Arrangements for electric ignition

Abstract

A detonator which is initiated by a shock tube event which is validated if a processor determines that a fusible link was not fused by a shock tube event at a predetermined time interval before light generated by the shock tube event is detected.

IPC Classes  ?

• F42C 15/36 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein arming is effected by combustion or fusion of an element
• F42C 15/40 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically
• F42D 1/04 - Arrangements for ignition
• F42D 1/045 - Arrangements for electric ignition

Abstract

A detonator assembly method wherein a base charge is placed into a tube to abut a closed end of the tube, an electronic module is positioned inside the tube, a displacement member with a stop formation is used to move the module, against a frictional restraining force, to a location at which the stop formation abuts a rim of the tube and wherein the module is held in position by deforming the tube into engagement with the module.

IPC Classes  ?

• F42B 3/195 - Manufacture
• F42D 1/04 - Arrangements for ignition

Abstract

A detonator installation (10) in which a detonator fire capacitor (36) which is connected in series with an inductor (18) is charged from a low voltage source (16) by repeatedly opening and closing a switch (20) thereby to cause a collapsing magnetic field in the inductor (18) which results in a charging current flow to the capacitor (36).

IPC Classes  ?

• F42C 11/00 - Electric fuzes
• F42D 1/045 - Arrangements for electric ignition

Abstract

A detonator which is used with a shock tube or a fibre optic cable and wherein an incident light signal is passed through a first impedance for communication purposes and a light signal associated with initiation of the detonator is passed through a second impedance which is less in value than the first impedance.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting

Abstract

A detonator which includes a housing which has a passage with an inlet and an outlet and which is of reducing cross sectional area from the inlet to the outlet and wherein the inlet is configured to be exposed to an end of a shock tube, and a fusible link is located at the outlet.

IPC Classes  ?

• F42D 1/04 - Arrangements for ignition
• F42D 1/05 - Electric circuits for blasting

Abstract

A detonator which includes a tube with an open end, a shock tube, secured to a plug which is fixed to an open end of the tube, an electronic module inside the tube, the module including a substrate which carries electronic components, and sensing structure mounted to the substrate spaced from an opposing end of the shock tube.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting
• F42D 1/04 - Arrangements for ignition

Abstract

A detonator which is responsive to a shock tube event which is validated if a link is fused at a predetermined time interval after a light signal produced by the event is detected and if, at the end of a subsequent time interval, the link is still fused and the light signal is absent.

IPC Classes  ?

• F42C 7/00 - Fuzes actuated by application of a predetermined mechanical force, e.g. tension, torsion, pressure
• F42C 13/02 - Proximity fuzes; Fuzes for remote detonation operated by intensity of light or similar radiation
• F42D 1/04 - Arrangements for ignition

Abstract

A control circuit for a detonator which includes a charger pump with an inductor which is connected to earth via a fusible link and wherein the charge pump is placed in an operative mode to produce a charging voltage for a firing capacitor if the link is fused in response to a shock tube event.

IPC Classes  ?

• F42C 19/12 - Primers; Detonators electric
• F42D 1/04 - Arrangements for ignition

Abstract

A blasting system which includes a number of roving GPS receivers, and associated taggers, which communicate with one another and with a control mechanism, and a reference GPS receiver which transmits RTCM corrective positional data which is stored at each roving GPS receiver to improve the accuracy of coordinate determinations for boreholes.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 1/02 - Arranging blasting cartridges to form an assembly

Abstract

A blasting system which includes a number of roving GPS receivers, and associated taggers, which communicate with one another and with a control mechanism, and a reference GPS receiver which transmits RTCM corrective positional data which is stored at each roving GPS receiver to improve the accuracy of coordinate determinations for boreholes.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 1/02 - Arranging blasting cartridges to form an assembly

Abstract

A wireless detonator assembly which includes a detonator, a receiver, a printed circuit board with a stored key which is hardwired onto the board during manufacture of the detonator assembly and control logic which allows the detonator to be fired only if the control logic extracts from a signal, received by the receiver, a reference key which is identical to the stored key.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting
• F42C 15/42 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically from a remote location, e.g. for controlled mines or mine fields

Abstract

A safety arrangement for a wireless blasting system which includes a plurality of wireless detonator assemblies located at a blast zone wherein each route which provides access to the blast zone is monitored to detect removal of a wireless detonator assembly which is in an operative mode from the blast zone.

IPC Classes  ?

• F42C 15/42 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically from a remote location, e.g. for controlled mines or mine fields
• F42D 1/045 - Arrangements for electric ignition
• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 5/00 - Safety arrangements
• F42D 5/02 - Locating undetonated charges

Abstract

A wireless detonator assembly which includes a detonator, a receiver, a printed circuit board with a stored key which is hardwired onto the board during manufacture of the detonator assembly and control logic which allows the detonator to be fired only if the control logic extracts from a signal, received by the receiver, a reference key which is identical to the stored key.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting
• F42C 15/42 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically from a remote location, e.g. for controlled mines or mine fields

Abstract

ln a blasting system a method of determining which borehole in a plurality of boreholes at a blast site is closest to a tagger, wherein latitude and longitude coordinate values for each borehole are determined and by using subsets of the longitude coordinates and latitude coordinates, and by performing a haversine calculation the position of the borehole which is closest to the tagger is determined.

IPC Classes  ?

• F42D 1/00 - Blasting methods or apparatus, e.g. for loading or tamping

Abstract

A safety arrangement for a wireless blasting system which includes a plurality of wireless detonator assemblies located at a blast zone wherein each route which provides access to the blast zone is monitored to detect removal of a wireless detonator assembly which is in an operative mode from the blast zone.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 5/00 - Safety arrangements
• F42D 1/045 - Arrangements for electric ignition
• F42C 15/42 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically from a remote location, e.g. for controlled mines or mine fields
• F42D 5/02 - Locating undetonated charges

Abstract

ln a blasting system a method of determining which borehole in a plurality of boreholes at a blast site is closest to a tagger, wherein latitude and longitude coordinate values for each borehole are determined and by using subsets of the longitude coordinates and latitude coordinates, and by performing a haversine calculation the position of the borehole which is closest to the tagger is determined.

IPC Classes  ?

• F42D 1/00 - Blasting methods or apparatus, e.g. for loading or tamping

Abstract

A blasting system which is established using an autonomously controlled vehicle to traverse a blast site, moving from blast hole to blast hole and at each blast hole using robotic means to prepare each blast hole for detonation.

IPC Classes  ?

• F42D 1/10 - Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure
• B25J 5/00 - Manipulators mounted on wheels or on carriages
• B25J 11/00 - Manipulators not otherwise provided for
• F42D 1/04 - Arrangements for ignition

Abstract

A blasting system which includes control equipment and a plurality of detonators which are located in respective boreholes formed in rock, wherein signals from the detonators are magnetically transmitted wirelessly through the rock to the control equipment via different paths between successive detonators, and wherein a signal from the control equipment can be simultaneously transmitted to all of the detonators.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting
• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• F42D 3/04 - Particular applications of blasting techniques for rock blasting

Abstract

A detonator system wherein communication between detonators is achieved by using a transmitter coil in one detonator to modulate a magnetic field which is measured by means of a receiver coil in another detonator.

IPC Classes  ?

• F42D 3/04 - Particular applications of blasting techniques for rock blasting
• F42D 5/00 - Safety arrangements
• F42D 1/05 - Electric circuits for blasting

Goods & Services

(1) Electronic blasting control systems; electronic blasting control devices and electronic blasting devices, namely, electronic controllers for detonators. (2) Detonators.

Goods & Services

(1) Electronic blasting control systems; electronic blasting control devices and electronic blasting devices, namely, electronic controllers for detonators (2) Detonators.

Goods & Services

Electronic blasting control systems comprised of Near Field Communication (NFC) technology-enabled readers and wireless controllers to monitor and control the functioning of other electronic devices; electronic controllers for detonators

Goods & Services

Electronic blasting control systems comprised of Near Field Communication (NFC) technology-enabled readers and wireless controllers to monitor and control the functioning of other electronic devices; electronic controllers for detonators

Abstract

A wireless detonator system wherein a blast control unit communicates bidirectionallywith at least one tagger and with detonators, prior to deployment thereof, using a NFCtechnique, and a transmitter/receiver assembly communicates with each detonator atan ultralow frequency.

IPC Classes  ?

• F42D 1/045 - Arrangements for electric ignition
• F42D 3/04 - Particular applications of blasting techniques for rock blasting

Abstract

A wireless detonator system wherein a blast control unit communicates bidirectionallywith at least one tagger and with detonators, prior to deployment thereof, using a NFCtechnique, and a transmitter/receiver assembly communicates with each detonator atan ultralow frequency.

IPC Classes  ?

• F42D 1/045 - Arrangements for electric ignition
• F42D 3/04 - Particular applications of blasting techniques for rock blasting

Goods & Services

Electronic blasting systems comprised of remote controlled wireless electronic transmitter and receiver devices and programmable electronic detonators used to detonate explosives; Electronic programmable blasting control devices and electronic blasting devices, namely, electronic controllers for detonators; downloadable computer software, namely, software for the use and operation of detonators or other instruments and tools used to ignite explosives or initiate explosive blasts and explosions. Electronic explosive blasting devices comprised of remote controlled wireless electronic delay detonators; devices initiating explosives, namely, detonators; Blasting devices for use in the blast hole comprised of blasting equipment in the nature of electronic delay detonators, detonator receiver antenna and booster unit, near field communication (NFC) programming tagger, transmitter antenna for transmitting electronic signals and blast control unit.

Abstract

A method of communicating through the earth which includes the steps of using a digital pulse train to generate a sweep pulse train which controls the frequency of a magnetic field at a first location, and at a second location, detecting the magnetic field and producing a signal at a frequency dependent on the frequency of the sweep pulse train, and extracting a replica of the digital pulse train from the signal.

IPC Classes  ?

• H04B 13/02 - Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
• E21B 47/125 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using earth as an electrical conductor
• F42D 1/05 - Electric circuits for blasting

Abstract

A downline wire (10) serves to connect a location on the ground surface to at least one detonator (52) in a blast hole. The downline wire includes at least two flexible electrical conductors (12, 14) encased by respective flexible layers of an insulating material (20, 22) and a flexible sheath (24) in which the insulated conductors are embedded. Each conductor (12, 14) is made of a copper-clad steel core and the insulating material is either a filled flexible polyvinylchloride (PVC) composition or a polyester elastomer. The sheath (24) is made from a medium or high density polyethylene compound which includes carbon black.

IPC Classes  ?

• H01B 7/04 - Flexible cables, conductors, or cords, e.g. trailing cables
• F42D 1/045 - Arrangements for electric ignition
• F42D 3/00 - Particular applications of blasting techniques
• H01B 7/08 - Flat or ribbon cables
• H01B 7/18 - Protection against damage caused by external factors, e.g. sheaths or armouring by wear, mechanical force or pressure

Abstract

A connector which includes a first component with a set of conductive terminals, a second component which is pivotally connected to the first component and which is movable between a first position at which the terminals are exposed and a second position at which the second component overlies the terminals and the first component, and a catch which maintains the components in the second position and which has a flexible lever which is actuable to release the second component from the second position.

IPC Classes  ?

• H01R 4/2433 - Flat plates, e.g. multi-layered flat plates mounted in an insulating base one part of the base being movable to push the cable into the slot
• H01R 13/50 - Bases; Cases formed as an integral body
• H01R 13/506 - Bases; Cases composed of different pieces assembled by snap action of the parts
• H01R 13/58 - Means for relieving strain on wire connection, e.g. cord grip

Abstract

A blasting system which includes a plurality of detonators located in respective boreholes each detonator being capable of two-way communication, and wherein a signal from control equipment is relayed from one detonator to another and then to a target detonator.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 3/04 - Particular applications of blasting techniques for rock blasting

Abstract

A blasting system which includes a plurality of detonators located in respective boreholes each detonator being capable of two-way communication, and wherein a signal from control equipment is relayed from one detonator to another and then to a target detonator.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay

Goods & Services

(1) Electronic blasting systems, namely, remote controlled wireless electronic transmitter and receiver devices and programmable electronic detonators used to detonate explosives; electronic programmable blasting control devices and electronic blasting devices ; downloadable computer software, namely, software for the use and operation of detonators or other instruments and tools used to ignite explosives or initiate explosive blasts and explosions (2) Electronic explosive blasting systems, namely, remote controlled wireless electronic explosive blasting systems to detonate explosives; blasting equipment for use, in the blast hole, namely, wireless detonator receiver antenna and booster unit, NFC programming tagger, transmitter antenna and blast control unit; devices initiating explosives.

Abstract

A shock tube for propagating and initiating a signal to an explosive charge which includes at least first and second elongate flexible conductors on a body of the detonator to enable two-way communication between the explosive charge and a blasting machine thereby to confirm the status of the detonator prior to sending a fire signal.

IPC Classes  ?

• C06C 5/06 - Fuse igniting means; Fuse connectors
• F42D 1/04 - Arrangements for ignition
• C06C 5/04 - Detonating fuses

Abstract

A detonator installation (10) in which a detonator fire capacitor (36) which is connected in series with an inductor (18) is charged from a low voltage source (16) by repeatedly opening and closing a switch (20) thereby to cause a collapsing magnetic field in the inductor (18) which results in a charging current flow to the capacitor (36).

IPC Classes  ?

• F42D 1/045 - Arrangements for electric ignition
• F42C 11/00 - Electric fuzes
• F42C 11/04 - Electric fuzes with current induction

Abstract

A detonator installation (10) in which a detonator fire capacitor (36) which is connected in series with an inductor (18) is charged from a low voltage source (16) by repeatedly opening and closing a switch (20) thereby to cause a collapsing magnetic field in the inductor (18) which results in a charging current flow to the capacitor (36).

IPC Classes  ?

• F42D 1/045 - Arrangements for electric ignition
• F42C 11/04 - Electric fuzes with current induction
• F42C 11/00 - Electric fuzes

Goods & Services

Electronic blasting systems comprised of remote controlled wireless electronic transmitter and receiver devices and programmable electronic detonators used to detonate explosives; Electronic programmable blasting control devices and electronic blasting devices, namely, electronic controllers for detonators; downloadable computer software, namely, software for the use and operation of detonators or other instruments and tools used to ignite explosives or initiate explosive blasts and explosions Electronic explosive blasting systems comprised of remote controlled wireless electronic delay detonators; devices initiating explosives, namely, detonators; Blasting systems for use in the blast hole comprised of blasting equipment in the nature of electronic delay detonators, detonator receiver antenna and booster unit, near field communication (NFC) programming tagger, transmitter antenna for transmitting electronic signals and blast control unit

Abstract

A detonator assembly method wherein a base charge is placed into a tube to abut a closed end of the tube, an electronic module is positioned inside the tube, a displacement member with a stop formation is used to move the module, against a frictional restraining force, to a location at which the stop formation abuts a rim of the tube and wherein the module is held in position by deforming the tube into engagement with the module.

IPC Classes  ?

• F42B 3/195 - Manufacture
• F42D 1/04 - Arrangements for ignition

Abstract

A detonator which includes a tube with an open end, a shock tube, secured to a plug which is fixed to an open end of the tube, an electronic module inside the tube, the module including a substrate which carries electronic components, and sensing structure mounted to the substrate spaced from an opposing end of the shock tube.

IPC Classes  ?

• F42D 1/04 - Arrangements for ignition

Abstract

A detonator which includes a housing which has a passage with an inlet and an outlet and which is of reducing cross sectional area from the inlet to the outlet and wherein the inlet is configured to be exposed to an end of a shock tube, and a fusible link is located at the outlet.

IPC Classes  ?

• F42D 1/04 - Arrangements for ignition

Abstract

A detonator which includes a tube with an open end, a shock tube, secured to a plug which is fixed to an open end of the tube, an electronic module inside the tube, the module including a substrate which carries electronic components, and sensing structure mounted to the substrate spaced from an opposing end of the shock tube.

IPC Classes  ?

• F42D 1/04 - Arrangements for ignition

Abstract

A detonator which is initiated by a shock tube event which is validated if a processor determines that a fusible link was not fused by a shock tube event at a predetermined time interval before light generated by the shock tube event is detected.

IPC Classes  ?

• F42D 1/04 - Arrangements for ignition
• F42C 15/36 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein arming is effected by combustion or fusion of an element
• F42C 15/40 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically
• F42D 1/045 - Arrangements for electric ignition

Abstract

A control circuit for a detonator which includes a charger pump with an inductor which is connected to earth via a fusible link and wherein the charge pump is placed in an operative mode to produce a charging voltage for a firing capacitor if the link is fused in response to a shock tube event.

IPC Classes  ?

• F42C 19/12 - Primers; Detonators electric
• F42C 15/40 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically
• F42D 1/04 - Arrangements for ignition

Abstract

A detonator which includes a housing which has a passage with an inlet and an outlet and which is of reducing cross sectional area from the inlet to the outlet and wherein the inlet is configured to be exposed to an end of a shock tube, and a fusible link is located at the outlet.

IPC Classes  ?

• F42D 1/04 - Arrangements for ignition

Abstract

A detonator which is initiated by a shock tube event which is validated if a processor determines that a fusible link was not fused by a shock tube event at a predetermined time interval before light generated by the shock tube event is detected.

IPC Classes  ?

• F42D 1/04 - Arrangements for ignition
• F42C 15/36 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein arming is effected by combustion or fusion of an element
• F42C 15/40 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically
• F42D 1/045 - Arrangements for electric ignition

Abstract

A control circuit for a detonator which includes a charger pump with an inductor which is connected to earth via a fusible link and wherein the charge pump is placed in an operative mode to produce a charging voltage for a firing capacitor if the link is fused in response to a shock tube event.

IPC Classes  ?

• F42C 19/12 - Primers; Detonators electric
• F42C 15/40 - Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically
• F42D 1/04 - Arrangements for ignition