Process for the manufacture of combustible cases for fuel charges or explosive charges
Abstract
Abstract The manufacture of cases for fuel charges or explosive charges such as cartridges, shells, tubes for rockets and cases for mines of combustible materials such as nitrated cellulose comprises nitrating layers of reinforced nonwoven fabrics in a known manner, combining the nitrated layers one upon another, drying the laminate thus obtained, preparing sections in the form of developments of the shape of the cases from said laminate, partially dissolving or softening respectively and shaping the sections into said cases. The cases may be coated for storing with a protective layer of swellable natural or synthetic polymeric material which in turn may be provided with a hydrophobic insulating coating. Preferably the laminate is prepared in a way that the nitrogen content of the nitrated nonwoven fabric layers increases from the outer periphery to the interior of the cases.
Inventors
- 👤 C Berger
Bibliographic Details
Claims Analysis
Total Claims: 7References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |