Perforating gun and detonator assembly
US-9581422-B2 · Feb 28, 2017 · US
Wireless detonator
US10466025B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10466025-B2 |
| Application number | US-201615774895-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 4, 2016 |
| Priority date | Nov 9, 2015 |
| Publication date | Nov 5, 2019 |
| Grant date | Nov 5, 2019 |
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- Title
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- Abstract
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
A wireless detonator which includes a control unit, an ignition element, an energy source which is configured to fire the ignition element in response to a signal from the control unit, a communication module, and an energy harvesting unit which harvests energy from an external electromagnetic field which is used to power, at least, the communication module.
First claim
Opening claim text (preview).
The invention claimed is: 1. A wireless detonator which includes a control unit, an ignition element, an energy source which is configured to fire the ignition element in response to a signal from the control unit, a communication module, an energy harvesting unit which harvests energy from an external electromagnetic field which is used to power, at least, the communication module, a sensor which inhibits firing of the ignition element by the energy source and which only allows firing of the ignition element by the energy source if the sensor detects that the sensor is in proximity to a bulk explosive, wherein the harvested energy is also used to power, at least in part, the control unit. 2. A wireless detonator according to claim 1 wherein the sensor is responsive to the presence of the molecule NH4 or the presence of the molecule NO3. 3. A wireless detonator which includes a control unit, an ignition element, an energy source which is configured to fire the ignition element in response to a signal from the control unit, a communication module, an energy harvesting unit which harvests energy from an external electromagnetic field which is used to power, at least, the communication module, a fuse connected in a current path between the energy source and the ignition element and a switch which is operable in response to a signal from the control unit to discharge the energy source at least partly and to open-circuit the fuse. 4. A wireless detonator according to claim 3 wherein the signal is generated by the control unit if the firing of the ignition element has not occurred despite reception of a fire command by the communication module. 5. A wireless detonator which includes a control unit, an ignition element, an energy source which is configured to fire the ignition element in response to a signal from the control unit, a communication module, an energy harvesting unit which harvests energy from an external electromagnetic field which is used to power, at least, the communication module, a sensor which inhibits firing of the ignition element by the energy source and which only allows firing of the ignition element by the energy source if the sensor detects that the sensor is in proximity to a bulk explosive. 6. A wireless detonator according to claim 5 wherein the sensor is responsive to the presence of the molecule NH4 or the presence of the molecule NO3.
Assignees
Inventors
Classifications
Electric fuzes ({in combination with other fuzes F42C9/14}; proximity fuzes F42C13/00; {safety or arming effected by electric means F42C15/40; electric contact parts for fuzes F42C19/06}; electric igniters F42C19/12, {F42B3/12 - F42B3/18; optical initiators F42B3/113}) · CPC title
with time delay by electric circuitry · CPC title
- F42D1/05Primary
Electric circuits for blasting · CPC title
operated by radio waves · CPC title
Initiators with incorporated integrated circuit · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10466025B2 cover?
- A wireless detonator which includes a control unit, an ignition element, an energy source which is configured to fire the ignition element in response to a signal from the control unit, a communication module, and an energy harvesting unit which harvests energy from an external electromagnetic field which is used to power, at least, the communication module.
- Who is the assignee on this patent?
- Detnet South Africa Pty Ltd
- What technology area does this patent fall under?
- Primary CPC classification F42D1/05. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Nov 05 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).