Method and device for activation of a detonator
US7712406B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2003 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Aug 11, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42C5/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method is described for detonation of a blasting charge in a fluid environment and which is placed inside a hollow body, such as in an ignition pellet. The method is characterised in that an ignition pellet is used, which is arranged to be deformed under the influence of a number of alterations or pulsations between high and low pressure in the surrounding fluid environment, with the detonation triggering unit inside the body being activated at the subsequent contact with the fluid environment as a consequence of the pellet being deformed. In rupturing, external fluid at overpressure is released into the cylinder and drives a firing pin against a detonating cartridge. A device for an ignition pellet is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.