Electronic delay detonator
US4136617A · kind A · utility
15Cited by
11References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | Jul 18, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42C11/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An electric detonator is fired by energy stored in the circuit upon arming f the system. A bridgewire grounds the trigger signal until sufficient input is present to blow out the bridgewire. The trigger signal then passes through a time delay circuit which gates a silicon controlled rectifier. This permits a closed circuit loop between the detonator and the stored energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.