Patent US1085708A successfully refreshed from Google Patents.
Patent US3670657A successfully refreshed from Google Patents.
US3670657A
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Signal flare
Assignee: United States Department of the Navy
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Filing: 1970-04-30
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Granted: 1972-06-20
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Expires: 1990-04-30
Abstract
Abstract A signal flare having a container with a plurality of propulsion nozzles in the aft end and having a propellant charge therein. A flare propellant is provided in the forward end of the container and is arranged to be ignited by the burning of the propellant charge. A plurality of flare nozzles are also provided in the aft end of the signal container and a quantity of flare dye is positioned between the flare propellant and the flare nozzles. The contact of hot flare propellant gases with the flare dye causes ablation of the flare dye so that the dye colors the hot flare propellant gases which are dispersed through the flare nozzles.
Inventors
- 👤 Robert W Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:56
CPC Classifications
F; F42; F42B; F42B4/00; F42B4/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
A signal flare comprising: an outer cylindrical container having a closed forward end, an inner cylindrical container positioned inside said outer cylindrical container and having its aft end closed by a plate having at least one propulsion nozzle therein, a quantity of propellant within said inner cylindrical container, a quantity of flare composition and a quantity of dye contained between said inner and outer cylindrical containers, a Passageway connecting said inner container and the space between said inner container and said outer container whereby said flare composition can be ignited by burning said propellant, and a ring plate positioned at the aft end between said inner and outer cylindrical containers, said ring plate having at least one nozzle therein for emitting colored smoke during flight of said signal flare.
Claim 2
Dependent Claim
129 words
A signal flare comprising: an outer cylindrical container having a closed forward end, an inner cylindrical container positioned inside said outer cylindrical container and having its aft end closed by a plate having at least one propulsion nozzle therein, a quantity of propellant within said inner cylindrical container, a quantity of flare composition and a quantity of dye contained between said inner and outer cylindrical containers, a Passageway connecting said inner container and the space between said inner container and said outer container whereby said flare composition can be ignited by burning said propellant, and a ring plate positioned at the aft end between said inner and outer cylindrical containers, said ring plate having at least one nozzle therein for emitting colored smoke during flight of said signal flare.
Claim 3
Dependent Claim
45 words
A signal flare as set forth in claim 1 having an orifice plate separating said flare composition and said dye, said orifice plate having an orifice therein whereby smoke produced by burning said flare composition passes through said orifice and is colored by said dye.
Claim 4
Dependent Claim
19 words
A signal flare as set forth in claim 1 having a quantity of igniter composition for igniting said propellant.
Claim 5
Dependent Claim
17 words
A signal flare as set forth in claim 1 wherein said dye is alpha methyl amino antaraquinone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |