Conductive detonating cord for perforating gun
US-10386168-B1 · Aug 20, 2019 · US
Conductive shock tube
US11021415B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11021415-B2 |
| Application number | US-201716065153-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 28, 2017 |
| Priority date | Oct 7, 2016 |
| Publication date | Jun 1, 2021 |
| Grant date | Jun 1, 2021 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
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.
First claim
Opening claim text (preview).
The invention claimed is: 1. A shock tube for propagating an initiating signal from a blasting machine to an explosive charge, the shock tube comprising: a core of an energy propagating material, a first protective layer which surrounds the core, a second protective layer which surrounds the first protective layer, a first elongate flexible conductor between the first protective layer and the second protective layer, and a second elongate flexible conductor on an outer side of the second protective layer, wherein the first and second elongate flexible conductors enable two-way communication between the explosive charge and the blasting machine. 2. The shock tube according to claim 1 , wherein each of the first and second elongate flexible conductors is made from a stretchable electrically conducting material. 3. The shock tube according to claim 2 , wherein the stretchable electrically conducting material is selected from an organic/polymeric conductive material, a metal oxide-based material or a mixture of an organic/polymeric conductive material and a metal oxide-based material. 4. The shock tube according to claim 1 , further comprising a cap attached to an end of the core and two contacts on the cap which are respectively electrically connected to the first and second elongate flexible conductors. 5. The shock tube according to claim 1 , wherein the first elongate flexible conductor is tubular, and the second elongate flexible conductor is tubular. 6. The shock tube according to claim 1 , wherein the first elongate flexible conductor is in a wavy or spiral pattern, and the second elongate flexible conductor is in a wavy or spiral pattern. 7. The shock tube according to claim 1 , wherein the shock tube has a diametrical dimension equal to that of a conventional shock tube. 8. The shock tube according to claim 1 , wherein at least one of the first and second elongate flexible conductors is provided as a coating or deposit. 9. The shock tube according to claim 1 , wherein each of the first and second elongate flexible conductors is provided as a coating or deposit.
Assignees
Inventors
Classifications
- C06C5/06Primary
Fuse igniting means; Fuse connectors · CPC title
Extensible conductors or cables, e.g. self-coiling cords · CPC title
Detonating fuses · CPC title
- F42D1/043Primary
Connectors for detonating cords and ignition tubes, e.g. Nonel tubes (mounting of detonators in blasting cartridges F42B3/26) · CPC title
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- What does patent US11021415B2 cover?
- 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.
- Who is the assignee on this patent?
- Detnet South Africa Pty Ltd
- What technology area does this patent fall under?
- Primary CPC classification C06C5/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 01 2021 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).