US3707411A
Expired / Lapsed
US
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Primer composition for solid propellant charges
Assignee: Dynamit Nobel AG
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Filing: 1969-10-24
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Granted: 1972-12-26
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Expires: 1989-10-24
Abstract
Abstract A PRIMER COMPOSITION FOR SOLID PROPELLANT CHARGES COMPRISING A MIXTURE OF NITROCELLULOSE AND 5-80% BY WEIGHT, PREFERABLY 5-50%, OF A PERCUSSION-SENSITIVE DIAZO, TRIAZOLE OR TETRAZOLE DERIVATIVE, FOR EXAMPLE, 5-AMINOTETRAZOLE, DIAZODINITROPHENOL OR TETRAZENE. UP TO ABOUT 40% BY WEIGHT OF NITRO COMPOUNDS, SUCH AS PENTHRITE AND NITROMANNITE, CAN BE ADDED TO VARY AND IMPROVE THE BRISANCE OF THE MIXTURE AS DESIRED. THE COMPOSITION FINDS PARTICULAR USE IN THE RECESS OF ANNULAR CASELESS PROPELLANT CARTRIDGES, FOR EXAMPLE, IN STUD DRIVING TOOLS.
Inventors
- 👤 Heinz Gawlick
- 👤 Gunther Marondel
- 👤 Werner Siegelin
- 👤 Heinz Ratz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:34
CPC Classifications
C; C06; C06B; C06B25/00; C06B25/18; C06B25/22; C06B43/00; Y; Y10; Y10S; Y10S102/00; Y10S102/70
Claims Analysis
Total Claims: 0
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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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |