US3732129A
Expired / Lapsed
US
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Explosive charges initiated by exploding wires
Assignee: Dynamit Nobel AG
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Filing: 1968-11-29
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Granted: 1973-05-08
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Expires: 1988-11-29
Abstract
Abstract EXPLOSIVE MATERIALS OF THE GROUP BRISANT EXPLOSIVES AND PRIMING POWDERS, WHICH NORMALLY HAVE DENSITIES SUCH THAT THEY ARE NOT WELL SUITED FOR USE WITH EXPLODING WIRES USED FOR INITIATION. SUCH MATERIALS ARE TREATED TO PROVIDE THEM IN A FORM OF REDUCED DENSITY, WHEREBY USE THEREIN OF EXPLODING WIRES IS ACCOMMODATED. THE EXPLOSIVE MATERIAL IN THE FORM OF SMALL PARTICLES IS MOLDED TO FORM A BODY THEREOF, WITH THE AID OF A BINDER, TO PROVIDE THE MATERIAL WITH A DENSITY OF ABOUT 30-65% OF THE AVERAGE CRYSTAL DENSITY OF THE EXPLOSIVE MATERIAL. THE EXPLODING WIRE IS EMBEDDED IN THE MOLDED BODY, AND, THE IGNITION ENERGY OF THE EXPLODING WIRE IS ABOUT 0.1-120 JOULES.
Inventors
- 👤 G Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:27
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/195; F42B3/198; C; C06; C06C; C06C7/00; C06C7/02
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |