Firing switch and method of operation
US9890620B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2014 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Oct 7, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42C15/20
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention concerns a firing switch for a downhole ballistics device. More particularly, but not exclusively, this invention concerns a firing switch for a downhole ballistics device and a method of operating the firing switch. The invention also concerns various safety features relating to the firing switch. A firing switch arrangement for a downhole perforating gun (26, 28, 30, 32, 34) is provided, and comprises a firing switch (26′, 28′, 30′, 32′, 34′), and a detonator (40), the detonator arranged to be activated in response to an electrical signal from the firing switch. A removable safety tab (42) is associated with the detonator, the removable safety tab arranged to provide a short circuit to the detonator, such that the short circuit is removed if the removable safety tab is removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.