Patent US3919939A successfully refreshed from Google Patents.
US3919939A
Expired / Lapsed
US
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Method and means for flash suppression
Assignee: United States Department of the Navy
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Filing: 1974-11-01
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Granted: 1975-11-18
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Expires: 1994-11-01
Abstract
Abstract A method and apparatus is provided for suppressing light flashes from a linear-shaped charge, for example, on a cargo dispenser. Undesirable light flashes may be suppressed by either manufacturing the linear shaped charge container from silver or placing a container of chemical suppressant along the external skin of the cargo section at the cutting line of the linear shaped charge or both.
Inventors
- 👤 James L Murray
- 👤 Lawrence M Sires
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:38
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/56; F42B12/58; B; B64; B64C; B64C1/00; B64C1/32; F42B15/00; F42B15/36; F42B15/38; F42B3/00; F42B3/28
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
IN AN AERIAL DELIVERY CARGO DISPENSER COMPRISING A HOLLOW ALUMINUM SHELL AND A SHAPED CHARGE EVICE WITHIN SAID SHELL POSITIONED TO CUT OPEN SAID SHELL, THE IMPROVEMENT COMPRISING: A TUBULAR PLASTIC CONTAINER FASTENED EXTERNALLY OF SAID SHELL IN LINE WITH AND SUBSTANTIALLY COEXTENSIVE WITH THE SHAPED CHARGE DEVICE; AND A VISIBLE LIGIHT FLASH SUPPRESSANT IN SAID CONTAINER CONSISTIING ESSEBTIALLKY OF A SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM CLORIDE, SODIUM BICARBONATE, ALUMINUM OXIDE. CALCIUM FLUORIDE AND POTOSSIUM CHLORIDE.
Claim 2
Dependent Claim
79 words
IN AN AERIAL DELIVERY CARGO DISPENSER COMPRISING A HOLLOW ALUMINUM SHELL AND A SHAPED CHARGE EVICE WITHIN SAID SHELL POSITIONED TO CUT OPEN SAID SHELL, THE IMPROVEMENT COMPRISING: A TUBULAR PLASTIC CONTAINER FASTENED EXTERNALLY OF SAID SHELL IN LINE WITH AND SUBSTANTIALLY COEXTENSIVE WITH THE SHAPED CHARGE DEVICE; AND A VISIBLE LIGIHT FLASH SUPPRESSANT IN SAID CONTAINER CONSISTIING ESSEBTIALLKY OF A SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM CLORIDE, SODIUM BICARBONATE, ALUMINUM OXIDE. CALCIUM FLUORIDE AND POTOSSIUM CHLORIDE.
Claim 3
Dependent Claim
39 words
The combination according to claim 1 further including: said shaped charge device consisting of an explosive material confined in a metal sheath; and said sheath being of a metal selected from the group consisting of lead, copper and silver.
Claim 4
Dependent Claim
15 words
The combination according to claim 1 wherein said chemical suppressant consists essentially of sodium chloride.
Claim 5
Dependent Claim
38 words
The combination according to claim 3 further including: a shaped charge device consisting of an explosive material confined in a metal sheath; and said sheath Being a metal selected from the group consisting of lead, copper and silver.
Claim 6
Dependent Claim
27 words
The combination according to claim 1 further including: said linear shaped charge device consisting of an explosive material confined in a metal sheath of substantially pure silver.
Claim 7
Dependent Claim
26 words
The combination of claim 3 further including: said linear shaped charge device consisting of an explosive material confined in a metal sheath consisting essentially of silver.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |