Patent US3897237A successfully refreshed from Google Patents.
US3897237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for disposing of pyrotechnic flares
Assignee: United States Department of the Navy
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Filing: 1974-08-02
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Granted: 1975-07-29
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Expires: 1994-08-02
Abstract
Abstract A process for the disposal of pyrotechnic flares comprised essentially of magnesium, sodium nitrate and a binder. The flare is crushed and then soaked in a solvent which softens and dissolves the binder material. The dissolved binder and solvent is decanted and the remaining magnesium and sodium nitrate are washed in water which dissolves the sodium nitrate. The aqueous solution of sodium nitrate is removed and is useful as a fertilizer. The remaining magnesium is dried and screened and is reusable as an ingredient in a pyrotechnic device.
Inventors
- 👤 Kenneth A Musselman
- 👤 Jr James E Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:53
CPC Classifications
C; C05; C05C; C05C5/00; C05C5/02; F; F42; F42B; F42B33/00; F42B33/06; Y; Y10; Y10S; Y10S149/00; Y10S149/124
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
58 words
A PROCESS FOR ISOLATING AND DISPOSING OF THE CHEMICAL INGREDIENTS IN ILLUMINATING FLARES COMPRISED OF MAGNESIUM, SODIUM NITRATE, AND A BINDER, SAID PROCESS COMPRISING, FIRST CRUSHING SAID CHEMICAL INGREDIENTS, THEN DISSOLVING SAID BINDER IN A SOLVENT, THEN DECANTING TO REMOVE SAID SOLVENT AND THE DISSOLVED BINDER, THEN WASHING THE REMAINING CHEMICAL INGREDIENTS IN WATER TO DISSOLVE SODIUM NITRATE,
Claim 2
Dependent Claim
58 words
A PROCESS FOR ISOLATING AND DISPOSING OF THE CHEMICAL INGREDIENTS IN ILLUMINATING FLARES COMPRISED OF MAGNESIUM, SODIUM NITRATE, AND A BINDER, SAID PROCESS COMPRISING, FIRST CRUSHING SAID CHEMICAL INGREDIENTS, THEN DISSOLVING SAID BINDER IN A SOLVENT, THEN DECANTING TO REMOVE SAID SOLVENT AND THE DISSOLVED BINDER, THEN WASHING THE REMAINING CHEMICAL INGREDIENTS IN WATER TO DISSOLVE SODIUM NITRATE,
Claim 3
Dependent Claim
51 words
A process for isolating and disposing of the chemical ingredients in illuminating flares as set forth in claim 1 wherein said solvent is an aqueous solution of methylene chloride comprised, by weight, of about 25 percent of methylene chloride, about 25 percent of isopropyL alcohol and about 50 percent of water.
Claim 4
Dependent Claim
52 words
A process for isolating and disposing of the chemical ingredients in illuminating flares as set forth in claim 1 wherein the step of first decanting to remove said solvent and the dissolved binder is followed by washing the remaining ingredients in isopropyl alcohol to remove any binder not dissolved by said solvent.
Claim 5
Dependent Claim
28 words
A process for isolating and disposing of the chemical ingredients in illuminating flares as set forth in claim 1 wherein said solvent is agitated for about 30 minutes.
Claim 6
Dependent Claim
28 words
A process for isolating and disposing of the chemical ingredients in illuminating flares as set forth in claim 4 wherein said water is agitated for about 15 minutes.
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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |