US4560485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-fighting powders
Assignee: Magyar Szenhidrogenipari Kutatofejleszto Intezet
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Filing: 1984-04-16
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Granted: 1985-12-24
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Expires: 2004-04-16
Abstract
Abstract The invention relates to fire-fighting powders providing per se or in mixtures an effective extinction of flames and embers. The fire-fighting powder according to the invention comprises (a) at least one member of a group consisting of potassium, sodium and ammonium sesquicarbonate as active ingredient and optionally one or more metal salt catalysts; or (b) at least one metal salt catalyst in addition to substances having per se known extinguishing effect; and optionally one or more other substances having per se known extinguishing effect as well as one or more additives generally used in the art. The fire-fighting powders according to the invention have enhanced extinguishing effect as compared to the known extinctors.
Inventors
- 👤 Eva Szekely
- 👤 Roza Szekely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:28
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0007; A62D1/0014
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
148 words
A fire fighting powder composition, comprising: (a) (1) at least one sesquicarbonate of potassium, sodium and ammonium in an amount of from about 10 to about 95% by weight, or (2) at least one of (i) bisulfate, sulfate, biphosphate, phosphate, bicarbonate, sesquicarbonate, carbonate and halide, of at least one of sodium, potassium and ammonium, (ii) alkaline metal borate, (iii) boric acid, and (iv) their adducts with at least one of urea, guanidine, melamine and dicyandiamide, in an amount of about 5% to about 90% by weight, (b) a water soluble metal salt catalyst which is at least one salt of at least one of copper, nickel, manganese, cobalt, chromium and iron in an amount of from 0.1% to 10% by weight, and (c) a hydrophobizing agent which is at least one of a metal stearate and a silicone derivative in an amount of 1% to 3% by weight.
Claim 2
Dependent Claim
148 words
A fire fighting powder composition, comprising: (a) (1) at least one sesquicarbonate of potassium, sodium and ammonium in an amount of from about 10 to about 95% by weight, or (2) at least one of (i) bisulfate, sulfate, biphosphate, phosphate, bicarbonate, sesquicarbonate, carbonate and halide, of at least one of sodium, potassium and ammonium, (ii) alkaline metal borate, (iii) boric acid, and (iv) their adducts with at least one of urea, guanidine, melamine and dicyandiamide, in an amount of about 5% to about 90% by weight, (b) a water soluble metal salt catalyst which is at least one salt of at least one of copper, nickel, manganese, cobalt, chromium and iron in an amount of from 0.1% to 10% by weight, and (c) a hydrophobizing agent which is at least one of a metal stearate and a silicone derivative in an amount of 1% to 3% by weight.
Claim 3
Dependent Claim
13 words
The fire-fighting powder composition of claim 1, which further comprises an inert carrier.
Claim 4
Dependent Claim
22 words
The fire-fighting powder composition of claim 2, wherein said inert carrier comprises at least one of a bentonite, a silicate and talc.
Claim 5
Dependent Claim
40 words
The fire-fighting powder composition of claim 2, wherein said hydrophobizing agent is at least one of a metal stearate and and a silicone derivative, and wherein said inert carrier comprises at least one of a bentonite, a silicate and talc.
Claim 6
Dependent Claim
21 words
The fire-fighting powder composition of claim 1, wherein the particle size of the powder composition is between 1 and 200 micrometers.
Claim 7
Dependent Claim
23 words
The fire-fighting powder composition of claim 1, wherein at least one of the ingredients is spray dried and/or mixed with the remaining material.
Claim 8
Dependent Claim
21 words
The fire-fighting powder composition of claim 1, wherein the ingredients are mixed in the molten state, then cooled, ground or pulverized.
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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) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |