GB992619A - Improvements in and relating to acoustic transducers for the priming of explosives - Google Patents
Improvements in and relating to acoustic transducers for the priming of explosivesInfo
- Publication number
- GB992619A GB992619A GB40372/63A GB4037263A GB992619A GB 992619 A GB992619 A GB 992619A GB 40372/63 A GB40372/63 A GB 40372/63A GB 4037263 A GB4037263 A GB 4037263A GB 992619 A GB992619 A GB 992619A
- Authority
- GB
- United Kingdom
- Prior art keywords
- charge
- charges
- wave
- transistor
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000002360 explosive Substances 0.000 title abstract 4
- 230000037452 priming Effects 0.000 title 1
- 239000003990 capacitor Substances 0.000 abstract 3
- 238000005422 blasting Methods 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000005474 detonation Methods 0.000 abstract 1
- 238000004880 explosion Methods 0.000 abstract 1
- 238000010304 firing Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/04—Arrangements for ignition
- F42D1/045—Arrangements for electric ignition
- F42D1/05—Electric circuits for blasting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Geophysics And Detection Of Objects (AREA)
- Air Bags (AREA)
Abstract
992,619. Electric blasting fuzes. PRAKLA GESELLSCHAFT FUR PRAKTISCHE LAGERSTATTENFORSCHUNG G.m.b.H. Oct. 14, 1963 [Oct. 16, 1962], No. 40372/63. Heading F3A. A device for firing explosive charges comprises an acoustic transducer connected to the input of a monostable blocking oscillator circuit which includes a transistor, the transistor being non-conductive in the state of rest and receiving the electrical energy for the detonation of a fuze in an explosive charge from a capacitor chargeable through a rectifier. A borehole 1 may be filled with explosive charges 3, 3a, 3b, 3c, the uppermost charge 3 being fired by conventional fuze means 4 activated by a charger 5, while the lower charges are provided with acoustic devices 6, 6a, 6b connected to detonators 7, 7a, 7b, respectively. Each acoustic device is activated by a charger 9 connected through a rectifier 21, Fig. 2, with a capacitor 19, so that when a sound wave generated by the explosion of charge 3 arrives at the transducer 11 of acoustic device 6, the transistor 12 becomes conductive. This in turn renders a transistor 13 conductive and puts the capacitor 19 in circuit with an impulse transformer 14, 15, 18 connected to the detonator 7. The charge 3a is thus detonated and generates a wave in phase with the wave from the charge 3. The process is repeated through charges 3b and 3c, so that a high-energy wave arrives at the bottom of the borehole, which wave can be used for geophysical measurements. The charges may also be arranged in adjacent boreholes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP30363A DE1234606B (en) | 1962-10-16 | 1962-10-16 | Electric explosive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB992619A true GB992619A (en) | 1965-05-19 |
Family
ID=7371898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB40372/63A Expired GB992619A (en) | 1962-10-16 | 1963-10-14 | Improvements in and relating to acoustic transducers for the priming of explosives |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1234606B (en) |
| FR (1) | FR1374596A (en) |
| GB (1) | GB992619A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2117948A (en) * | 1982-03-22 | 1983-10-19 | Ml Aviation Co Ltd | Initiation of devices by high- frequency sound waves |
| CN111536842A (en) * | 2020-04-21 | 2020-08-14 | 西北核技术研究院 | Transformer-based remote detonation system and method |
-
1962
- 1962-10-16 DE DEP30363A patent/DE1234606B/en active Pending
-
1963
- 1963-10-09 FR FR950051A patent/FR1374596A/en not_active Expired
- 1963-10-14 GB GB40372/63A patent/GB992619A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2117948A (en) * | 1982-03-22 | 1983-10-19 | Ml Aviation Co Ltd | Initiation of devices by high- frequency sound waves |
| CN111536842A (en) * | 2020-04-21 | 2020-08-14 | 西北核技术研究院 | Transformer-based remote detonation system and method |
| CN111536842B (en) * | 2020-04-21 | 2022-08-16 | 西北核技术研究院 | Transformer-based remote detonation system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1234606B (en) | 1967-02-16 |
| FR1374596A (en) | 1964-10-09 |
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